| 江海龙,王少亭.基于有限元模拟的预压力式加筋土结构变形性能研究[J].江西水利科技,2018,(3): |
| 基于有限元模拟的预压力式加筋土结构变形性能研究 |
| Finite element analysis of prestressed reinforced soil structure model |
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| DOI： |
| 中文关键词: 预压力 加筋土结构 有限元 变形性能 |
| 英文关键词: Prestress Reinforced soil structure Finite element method Deformation behavior |
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| 中文摘要: |
| 对加筋土结构提前施加预应力，能够提高该结构抗压、抗拉性能及整体变形性能.为了研究各种工况条件下预压力式加筋土结构的抗压、抗拉及变形性能，本文利用有限元差分软件ANSYS通过建立有限元模型来模拟各种工况条件下的结构所施加的预压力效果.模拟结果表明：在传统加筋土结构上施加预压力既改变了土体内部应力分布状态，增强了土体之间的摩擦作用，也使得土体更加紧密，从而限制了土体的侧向变形，增加了土体的强度：受拉构件起到在土体内部传递拉应力及使结构上下表面支压板产生预压力围压的作用，从而大大增加土体的变形性能. |
| 英文摘要: |
| In order to improve the compressive and tensile properties and overall stability of the structure，the vertical pressure is applied to the reinforced soil structure in advance.In order to study the compressive，tensile and stability properties of the pre stressed reinforced soil under various working conditions，the finite element finite difference software ANSYS is used to establish the reinforced soil structure model.The objective of the model is to simulate the effect of preload on the structures under various operating conditions.The simulation results show that：1)in the traditional reinforced soil structure pre pressure exerted not only changed the soil stress distribution，enhance the effect of friction between soils；makes the soil more closely，thus limiting the lateral deformation of the soil，increase the soil strength.2)the tension member plays a role in transmitting tensile stress in the soil mass and making the upper and lower surface of the structure bear the pre pressure and confining pressure，thus greatly improving the stability of the soil mass. |
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