Subjects: Mechanics >> Solid Mechanics submitted time 2024-06-17 Cooperative journals: 《应用力学学报》
Abstract： To determine the softening intrinsic model of rubber concrete,wedge splitting test studies and theoretical analyses were performed on concrete specimens with two seam height ratios and five rubber admixtures.Based on the test results,the fracture toughness and fracture energy of concrete specimens were calculated using the canonical formula and the law of energy conservation,and the relevant parameters of the three softening curves of PETERSSON,Euroconcrete Code,XU and REINHARDT were solved.The theoretical values of cohesive toughness were obtained based on the three softening instantonal relationships and compared with the calculated values of cohesive toughness tests.The results show that the softening instability and fracture energy of concrete can be improved by incorporating appropriate amounts of rubber aggregate; the three typical concrete softening models cannot describe the cohesive toughness of rubber concrete well; the softening intrinsic structure model of rubber concrete is obtained by modifying the softening relations of XU and REINHARDT,which can be used to study the cracking resistance of rubber concrete materials.
YES
Subjects: Mechanics >> Solid Mechanics submitted time 2024-06-17 Cooperative journals: 《应用力学学报》
Abstract： The goals of this paper are to study the frost resistance of steel slag fine concrete(SSFC),research the damage mechanisms in cold regions.First,the mass loss rate,strength loss rate,relative dynamic elastic modulus of concrete with different steel slag fine aggregate replacement rates after freezing-thawing cycles were tested,and the freezing-thawing damage law was analyzed.Scanning electron microscopy method was used to observe the hydration products of steel slag concrete and the steel slag-mortar interface transition zone for the analysis of freezing-thawing damage microscopic mechanisms.The results revealed that the steel slag fine aggregate is significantly damaged by freezing-thawing action.Interfacial transition zone of steel slag fine concrete is superior to that of ordinary concrete.The minimum mass and strength loss of concrete at 60% replacement rate of steel slag fine concrete,only 4.06% and 44.2% reduction,respectively.The highest mass and strength loss rates of concrete are 6.05% and 58%,respectively,with 100% replacement of steel slag fine concrete.When the number of freeze-thaw cycles is greater than 50,the relative dynamic elastic modulus of concrete with 60% of steel slag fine concrete is higher than the rest of the dosing group.In order to improve the performance of concrete under freezing-thawing cycles,60% replacement rate of steel slag fine concrete is recommended.Finally,the freezing-thawing damage evolution model of steel slag concrete was established by analyzing the damage evolution s of steel slag concrete specimens.
YES
Subjects: Mechanics >> Solid Mechanics submitted time 2024-06-17 Cooperative journals: 《应用力学学报》
Abstract：
Reliability sensitivity can reflect the influence of the distribution parameter of basic variable on reliability and guide reliability analysis and reliability-based optimization,a non-probabilistic reliability sensitivity analysis method is proposed based on a multidimensional parallelepiped model.The explanation is first given that the non-probabilistic reliability index and the non-probabilistic failure degree are respectively used as the reliability measure of structures when the basic variable domain is entirely within and overlaps with the safe domain.The analytical expressions of reliability sensitivity of a linear system is then derived,and their application in nonlinear system is further discussed.Three numerical examples are finally provided to demonstrate the feasibility and effectiveness of the proposed method.
YES
Subjects: Mechanics >> Solid Mechanics submitted time 2024-06-17 Cooperative journals: 《应用力学学报》
Abstract：
To compared the microwave and conventional heating effects on the mechanical properties of granite,microwave and conventional heating methods were performed to heat granite specimens at different temperature(300,500,600,800 ℃).After heating,the density,P-wave velocity,and uniaxial compression tests were performed.The effects of heating temperature on the density,P-wave velocity,stress-strain curve,uniaxial compression strength and elastic modulus were analyzed under the two heating methods.The microwave and conventional heating effects on the granite properties were discussed.The results show that under the two kinds of heating methods,the density,P-wave velocity,uniaxial compression strength,and elastic modulus all decrease as heating temperature increases,and the reduction rate is the highest from 500 to 600 ℃.Under the same heating temperature condition,the decreasing extent in density,P-wave velocity,uniaxial compression strength,and elastic modulus of granite after microwave heating is higher than that after conventional heating.The difference induced by the two heating methods increases as heating temperature increases.Compared with conventional heating,the microwave heating time is shorter,generally only 1/7 of the conventional heating time.Therefore,microwave heating is more efficient in degrading granite performance.
YES
Subjects: Mechanics >> Solid Mechanics submitted time 2024-06-17 Cooperative journals: 《应用力学学报》
Abstract： An optimization method simultaneously designing the geometric parameters of the cell and non-uniform arrangement along the axial is developed using the static condensation to enhance the strength and stiffness of the honeycomb structure effectively.The equivalent elastic modulus and Poisson’s ratio of the cell are derived by the Castigliano theorem.The honeycomb core is uniformly divided into several substructure columns along the axial,and the stiffness matrixes of the substructures are obtained by finite element method.The super-element stiffness matrixes are established using the static condensation and are assembled according to the node number to obtain the global stiffness matrix of the honeycomb core.The structural deformation of the honeycomb core is calculated under the shear load and compared with that from ANSYS software.The multi-objective structural optimization model,in which the number of the substructures,the angle of the cell and the ratio of splitter width to inclined wall length are taken as design variables,is solved using the improved particle swarm algorithm to maximize the equivalent elastic modulus and minimize the structural deformation,and the static and dynamic characteristics of original and optimized honeycomb cores are analyzed.The results show that after the optimization,the maximum displacement,stress and strain obviously decrease,and the harmonic displacement is the maximum when the excitation frequency is equal to the second-order natural frequency.The research can provide significant guidance for optimizing the variable cell arrangement of the honeycomb structure.
YES
Subjects: Mechanics >> Solid Mechanics submitted time 2024-06-17 Cooperative journals: 《应用力学学报》
Abstract： To study the effects of the replacement rate of recycled coarse aggregate(RCA)and eccentricity on the mechanical properties of recycled aggregate concrete with ferronickel slag filled circular steel tube columns,13 specimens were designed for axial and eccentric compression tests,and load-mid-span deflection curve,lateral deflection curve,stiffness degradation and energy dissipation were analyzed.Based on the research results of ordinary concrete filled steel tube(CFST)column,the prediction formula for the compression-bending capacity of recycled CFST is regressed.Results show that the deflection shape of the biased specimen conforms to the sinusoidal half wave curve.The position of the neutral axis of the cross section deviates to the compression zone during loading.When the replacement rate exceeds 30%,with the increase of RCA replacement rate,the ultimate bearing capacity of the specimen decreases,the stiffness degrades more,and the energy dissipation coefficient of the specimen decreases.With the increase of eccentricity,the ultimate bearing capacity of the specimen decreases,the envelops area of the lateral deflection curve increases gradually,and the stiffness degenerates more.The values calculated by the fitting formulas are in good agreement with the experimental results.
YES
Subjects: Mechanics >> Solid Mechanics submitted time 2024-06-17 Cooperative journals: 《应用力学学报》
Abstract： To study the eccentric compression performance of ultra-high performance concrete filled with steel tubular short columns,12 circular specimens were designed and tested under eccentric compression by taking the load eccentricity and diameter-thickness ratio as variation parameters.The failure mode,load-deflection curves,strain of steel tubes,and deformation coefficient of these members were analyzed.The effects of main factors on the eccentric compression performance of short columns were explored.The results show that the failure of specimens is characterized by the yielding of the steel tube,followed by the crushing of the core concrete.The load-deflection curves have clear peak points,and the greater the eccentricity and the smaller the diameter-to-thickness ratio,the smoother the drop section of the load-deflection curves.At 60% of the peak load,the steel tube begins to produce obvious confinement; at 90% of the peak load,the section deformation no longer meets the plane section assumption.As the eccentricity increases,the load-bearing capacity and stiffness of the specimens decrease,and the decrease in the diameter-to-thickness ratio can reduce this adverse effect.Based on the experiment,the N-M curve of the short column is analyzed by numerical simulation and an expression for the relationship between the critical eccentricity and the confining coefficient is established.The practical calculation method of short column bearing capacity is proposed,and the theoretical and experimental results are in good agreement.
YES
Subjects: Mechanics >> Solid Mechanics submitted time 2024-06-17 Cooperative journals: 《应用力学学报》
Abstract：
Field equation of single and closed flaw tip under compression-shear stress is constructed in this paper.The initiation angle of wing crack,the influence of side pressure coefficient k on stress field and initiation and propagation of wing crack and the influence of flaw angle α on initiation stress of wing crack under uniaxial compression are analyzed by using the maximum tangential stress criterion.The correctness of the theoretical solution is verified by uniaxial compression test and triaxial compression literature data comparison.The research showsthat the effect of T-stress on the initiation angle of wing crack can be ignored when the critical relative size of cracking λ approaches 0 or the flaw angle α approaches 45°.Hoop tensile stress decreases with the increase of side pressure coefficient k,and axial stress required for the initiation of wing crack increases.The confining pressure has an inhibitory effect on the propagation of wing cracks and the inhibitory effect is stronger when effective shear stress of the flaw surface is greater than 0.Wing cracks and a small number of anti-wing cracks and coplanar shear cracks are observed at the tip of the pre-existing flaw.The initiation angle of wing cracks are fluctuated around the predicted value.The initiation stress of wing crack increases with the increase of flaw angle under uniaxial compression,and it also increases with the increase of side pressure coefficient under triaxial compression,and they are consistent with the changing relationship predicted by the model in this paper.
Subjects: Mechanics >> Solid Mechanics submitted time 2024-06-17 Cooperative journals: 《应用力学学报》
Abstract： Drilling pipe leakage is the most common failure form of drilling pipe in service,and the expansion of surface crack of drilling pipe is the direct cause of drilling pipe leakage.In order to evaluate the safety performance of drill pipe with multiple cracks on the surface,a finite element model of double cracks on the surface of drill pipe was established by taking the wellhead section of G105 drill pipe of an ultra-deep vertical well as the research object.The effects of crack spacing,crack size and strike on the J-integral at the leading edge of the circular main crack under tensile and torsional loading were analyzed.The results show that the circumferential secondary cracks arranged in the axial direction are relatively the safest,which can greatly reduce the J-integral of the leading edge of the main crack.The circumferential secondary cracks arranged in the circumferential direction are the most dangerous,which can greatly increase the J-integral of the leading edge of the main crack.The axial secondary cracks can increase the J-integral of the leading edge or part of the leading edge of the main crack in the drill pipe,but the increase is much weaker than that of the circumferential secondary cracks.The influence intensity of secondary cracks on the leading edge J-integral of the main crack decreases with the increase of the distance between two cracks and the decrease of the size of secondary cracks.Therefore,the influence of secondary cracks should be considered when the size of secondary cracks is large and the distance between them is relatively close.When the size of the secondary crack is small or the distance is long,the secondary crack can be ignored,and the model is simplified to a single-crack drill pipe model for analysis.
YES
Subjects: Mechanics >> Solid Mechanics submitted time 2024-04-19 Cooperative journals: 《应用力学学报》
Abstract： Considering that research of circumferential horizontal shear wave(SH wave)has been published on the solid cylinders and cylindrical shell structures,aiming to discuss the existence of SH surface waves on the cylindrical cavity.Since it is impossible to directly obtain the analytical solution of SH surface wave propagating in cylindrical cavity,we compare the tendency of wave structures,strain energy density varying along thickness of SH waves on the surface of cylinders and various cylindrical shells.The governing equation of SH wave of homogeneous elastic material and functionally graded material in cylindrical coordinate system is established.The Bessel functions solution and the power series asymptotic solution of the governing equations of homogeneous elastic materials and functionally graded materials are obtained,respectively.Furthermore,the dispersion curves,the wave structures and the strain energy density are calculated.The results show that the power series method can be employed for solving wave governing equations with variable coefficients with high accuracy,the energy of circumferential SH waves in cylindrical structures is concentrated on the outer surface or subsurface,and the phenomenon of energy concentration is more obvious along thickness.It can be deduced from the distribution of strain energy density that the circumferential SH surface wave cannot propagate in the cylindrical cavity.Finally,for homogeneous material structure and functionally graded material structure,the inverse method is used to prove that any analytical solution cannot satisfy the attenuation condition of SH surface wave in the cavity.
Subjects: Mechanics >> Solid Mechanics submitted time 2024-04-19 Cooperative journals: 《应用力学学报》
Abstract：
The autoclaved aerated concrete block developed by desert sand is a new type of masonry material.A pseudo-static test considering the different vertical compressive stresses and constraints of structural columns is carried out on four pieces of desert sand wall made of autoclaved aerated concrete block in order to study the application of this new block in village buildings.The failure characteristics i.e.,force-displacement curve,skeleton curve,stiffness degradation curve and ductility of the four walls under low cyclic loading arecompared and analyzed. The test results show:1)The wall is mainly shear failure.The main crack of the wall without structural columns runs through the entire wall is about 45°,and the main crack of the wall with structural columns is in the shape of “inverted eight”.And when the vertical compressive stress increases,the seismic capacity of the wall increases,the lateral stiffness improves,but the ductility decreases. 2)Under the same vertical compressive stress,comparative analysis shows that the ultimate bearing capacity of the wall with structural columns is increased by about 2.22 times that of plain wall,ductility increased by about 60%,and the stiffness is also improved. 3)Based on the principal tensile stress theory and Coulomb failure theory,the calculation formulas for the seismic bearing capacity of the new block wall are established, and the calculation formula of seismic bearing capacity established by Coulomb failure theory is more reasonable in application. 4)The skeleton curve of the established restoring force model can reflect the experimental characteristics of the desert sand autoclaved aerated concrete block wall well.
Subjects: Mechanics >> Solid Mechanics submitted time 2024-04-19 Cooperative journals: 《应用力学学报》
Abstract：
In order to study the propagation characteristics of type Ⅰ fractures of concrete with different aggregate sizes,concrete three-point bending beam fracture tests with the maximum aggregate size of 10,20,30,40 mm were carried out,and the data of full-field strain and displacement changes in the calculated area on the specimen surface were measured by using digital image correlation techniques to investigate the changes and development of fracture energy,fracture toughness and fracture process zone of concrete with different aggregate sizes.The relationship between the FPZ extension process and the post-peak loading was investigated.The results show that with the increase of the aggregate size,the compressive strength,peak load and fracture parameters of the specimens show a trend ofincreasing first and then decreasing,and the change of FPZ length of M20 specimens has a strong correlation with post-peak load,and the aggregate has the best restraint effect on microcracks,In addition,by analyzing the development law of FPZ of concrete specimens with different aggregate sizes,it can be learned that specimens with the aggregate size of 20 mm have an improved local deformation capacity after peaking,enhanced fracture energy and fracture toughness,higher bearing capacity and smaller FPZ in the fracture process than other aggregate sizes concrete; therefore,the suitable aggregate size is 20 mm.
Subjects: Mechanics >> Solid Mechanics submitted time 2024-04-19 Cooperative journals: 《应用力学学报》
Abstract：
Basalt fiber reinforced composite(BFRP)has the advantages of strong corrosion resistance,high specific strength and environmental protection.The correct evaluation of the reliability and bearing capacity of BFRP pipeline is the basis for its application in the field of high value-added oil and gas transportation.For composite pipes wound by the basalt fiber(BF),the strength of impregnated fiber bundles is obtained on a meso scale firstly.Then,both axial and circumferential specimens were cut from a pipe and the tensile strength of the two kinds of specimens were measured.Based on both experimental measurement and finite element simulation,damage evolution of structure layers of the pipe wall was studied under conditions of tension,compression and shearing,and the constitutive model of the structure layer is obtained.Finally,a finite element model of the BF-wound composite pipe was established,and influences of fiber performances on the pipe’s carrying capacity were studied.It is shown that the effective fiber content exerts a great influence on the bearing capacity of the pipe.It is important to reduce the dispersion of fiber reinforcement from aspects such as fiber production and pipe forming process for predicting load-bearing reliability accurately and promoting BF composites application in oil and gas pipeline field.
Subjects: Mechanics >> Solid Mechanics submitted time 2024-04-19 Cooperative journals: 《应用力学学报》
Abstract：
Blind bolted T-shaped plate joints with good force transfer performance and high seismic performance,can make full use of the section characteristics of double steel tubes in composite concrete-filled steel tubular columns.Cyclic loading tests and numerical simulations on five blind bolted joints were conducted.There were three types of deformation characteristics of the T-shaped plate due to its different ribbed forms,but all the failure modes of the joints were plastic deformation of steel beams after T-shaped plates yielded.Numerical simulation results agreed well with the experimental results.A tensile model of the T-shaped plate was established according to the force-transferring mechanism based on the results of experiments and simulations.The bending bearing capacity of T-shaped plate flanges and stiffeners was calculated respectively,and the ultimate bearing capacity of the joint was calculated.The error between the calculated results and the experimental results is very small,and they are very close to the numerical simulation results.The results show that the calculation formula based on the tensile model of a T-shaped plate is suitable for the case of strength matching between T-shaped plates and blind bolts.The rib form of T-shaped plates has the greatest influence on the ultimate bearing capacity of the joint,followed by the flange thickness of T-shaped plates,and the web thickness of T-shaped plates has little influence.The maximum critical value and the best matching value between the diameter of the blind bolt and the flange thickness of T-shaped plates are obtained,which provides a theoretical reference and design basis for the application of this type of joint in composite structures.
Subjects: Mechanics >> Solid Mechanics submitted time 2024-04-19 Cooperative journals: 《应用力学学报》
Abstract：
To explore the influences of section types(rectangular,1/4 arch,1/2 arch)and the groove-width ratio(B/b=1.5:1,2:1,3:1,4:1)on the earth pressure of the hill-filled cut-and-cover tunnel(HFCCT),this paper used the discrete element software PFC2D to simulate and analyze the evolution laws of the average vertical earth pressure(VEP)on the top of the cut-and-cover tunnel(CCT),the settlement difference between inner and outer soil columns,and the contact force chains among particles.Moreover,the paper analyzed the correlation between the settlement difference and the earth pressure based on the earth pressure theory of culvert and pipe,which was put forward by Gu Anquan,and further modified the function of the above-mentioned theory so as to make it applicable to the different section types and groove-width ratio (B/b).The results show that ①when the B/b is determined,the contact force chains will distribute on the top of the CCT and the average vertical earth pressure(VEP)is greater if the CCT adopts a rectangular section.The average VEP will decrease if the CCT adopts an arched section.However,there is partly stress concentration at the top of the arched section.② When the section is determined,the average VEP and settlement difference on the top of CCT both increase with the increase of B/b.As the B/b decreases,the slope effect is enhanced,the settlement of the outer soil column reduces gradually,and the interaction between the inner and outer soil columns declines,which makes the VEP on the top of the CCT decrease.③ The settlement difference between the inner and outer soil columns is linearly related to the additional earth pressure.Compared with the rectangular section,the same additional earth pressure under the arched section is generated by a smaller differential settlement,which benefits the stability of the structure.
Subjects: Materials Science >> Composite Material Subjects: Mechanics >> Solid Mechanics Subjects: Aviation & Aerospace >> Manufacture Technology of Aerocraft submitted time 2024-04-09
Abstract： The mechanical properties of unidirectional fiber-reinforced plastic (UD-FRP) are affected by internal micro-defects, such as random fiber arrangement, fiber misalignment, and micro#2;voids. This study aims to investigate how these multiple micro-defects interact with each other and how they affect the strength and failure mechanisms of UD-FRP through computational micromechanics. The failure behavior was simulated by the finite element analysis of a representative volume element; both matrix and interface failure were considered for the different loadings and their combinations. It was found that these micro-defects significantly weakened the compressive strength of UD-FRP along the longitudinal direction. Especially the fiber misalignment magnified the effect of fiber arrangement, while the micro-voids reduced the effect. Besides, the fiber arrangement and micro-voids significantly weakened the tensile and compressive strength of UD-FRP along the transverse direction. Moreover, transverse and longitudinal shear strengths are significantly affected by micro-voids, but only longitudinal shear is affected by fiber arrangement, and this effect is also weakened by micro-voids. Finally, the damage envelope under the combined longitudinal compression and transverse loads was obtained and compared with the Tsai-Wu failure criterion. The results showed that the Tsai-Wu criteria can provide an effective estimation for the failure locus under this biaxial loading condition.
Peer Review Status:
Awaiting Review
Subjects: Mechanics >> Solid Mechanics submitted time 2024-02-07 Cooperative journals: 《应用力学学报》
Abstract：
Since the column in precipitator casing mainly presents buckling failure,the stability strengthening method for column was investigated so as to improve its buckling capacity and optimize the structural design of precipitator equipment.For the structure system composed of stiffened wallboard and H-Shaped steel column in precipitator casing,in consideration of initial imperfection,the buckling mechanism of column was investigated by non-linear finite element method first.Since being influenced by the wall stressed skin effect,the buckling of column occurs on the high compressive stress region adjacent to the column top.The column presents the interactive buckling that the overall flexural-torsional buckling occurs on the front half section composed of the front flange and the web and the local buckling occurs simultaneously on the web.Based on the buckling characteristics,the strengthening configuration measurement for enhancing column buckling capacity was proposed,that is,the strengthening steel plates would be welded on both sides of the front flange of the column in top region,and its upper and lower sides would be welded with the L-shaped diaphragms.The influences of several configuration parameters on the column buckling capacity were investigated,including the width,thickness and the locating range of the strengthening steel plates and the L-shaped diaphragm thickness.Consequently,a rational design method of the strengthening configuration for enhancing column buckling capacity was proposed.The buckling capacity of the column can be increased significantly by employing the strengthening configuration measurement.
Subjects: Mechanics >> Solid Mechanics submitted time 2024-02-07 Cooperative journals: 《应用力学学报》
Abstract：
The seepage direction inside the dam usually changes due to the different seepage positions and the fluctuation of upstream and downstream water levels.The infiltration angle of the seepage flow on the contact surface between the protected soil and the filter is not orthogonal.Because of the great difference of permeability coefficient between the dam material and the filter,the seepage angle causes the change of hydraulic properties of the contact surface,which will affect the filter performance.In this paper,the PFC-3D is used to establish the numerical models of 30°,45°,60° and 90° between the seepage direction and the contact surface.By simulating the real-time invasion rate of the protected soil particles and the depth of their movement into the filter,the contact erosion and filter effect under the action of different seepage directions are studied.The results show that in the initial stage of seepage,the difference of invasion rate and invasion depth of protected soil particles in different seepage directions is small; with the increase of seepage time,the invasion rate at 90°is relatively stable and the value is small,the invasion depth and seepage velocity at the contact surface are the smallest,and the filter has a strong ability to block the movement of protected soil particles.The filter effect decreases at 60°,45° and 30°,indicating that the larger the angle between the seepage direction and the contact surface,the better the filter effect.The reasonableness of the calculation results is discussed by using the principle of seepage refraction,and compared and analyzed with the experimental results of relevant literature,and it is considered that the change of seepage infiltration angle at the contact surface between the fill and the filter should be paid attention to in water conservancy projects such as embankment dams,especially the fact that the small angle of infiltration flow at the interface has a greater influence on the filter effect.
Subjects: Mechanics >> Solid Mechanics submitted time 2024-02-07 Cooperative journals: 《应用力学学报》
Abstract：
Small diameter pipelines are widely distributed in oil and gas fields,but the traditional corrosion detection methods are difficult and expensive,and the corrosion degree can only be quantitatively evaluated after the sampling points are excavated.In order to make up for this deficiency,quantitative evaluation under trenchless condition is realized:the magnetic signal characteristics of leakage magnetic field near corrosion defects are obtained by analyzing the magnetic dipole model; the relationship between the depth and width of corrosion defects and the magnetic signal is obtained by finite element simulation; SY/T 6151—2009 “evaluation method for corrosion damage of steel pipeline”,the defect width and depth parameters required for corrosion evaluation are combined with the magnetic dipole model theory to deduce the relationship between calculation and magnetic signal characteristic parameters,and a quantitative evaluation method for pipeline corrosion under trenchless condition by weak magnetic field detection is obtained,which is verified in an oil field pipeline project,and is suitable for Trenchless condition It provides a theoretical basis for the quantitative evaluation of pipeline corrosion detection.
Subjects: Mechanics >> Solid Mechanics submitted time 2024-02-07 Cooperative journals: 《应用力学学报》
Abstract：
Under the action of asymmetrical load,the internal bracing foundation excavation will skew to the small side of the load,which will be deleterious to the stability of the foundation pit,so it is necessary to optimize its design.A unsymmetrical loaded pipe gallery foundation pit is used as an example in this paper,and the finite element software plaxis 2D was used to simulate this foundation pit.The simulation results are in good agreement with the measured data,which verifies the validity of the model.Then the supporting structure parameters of the foundation pit are analyzed,and the influence of the length,equivalent thickness and elastic modulus of the supporting structure on the deformation of the supporting structure and the safety of the foundation pit is studied.The research results show that when the supporting structures on both sides are designed according to the biased side,the maximum horizontal displacement of a side supporting structure increases with the equivalent thickness of the side supporting structure.And with the increase of the equivalent thickness and elastic modulus of the supporting structure on both sides,the maximum horizontal displacement of the side supporting structure and the reverse displacement of the top of the non-biased side supporting structure will decrease.Finally,a simple and economical optimization idea for asymmetric load foundation pits is proposed by parameter analysis,and the optimization effect is analyzed through numerical simulation,which proves the effectiveness of the optimization idea.The conclusions and optimization idea can provide references for similar projects.
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