影响加筋土挡墙墙背水平土压力的参数分析

结合加筋土挡墙离心模型试验墙背水平土压力数据,验证数值模拟的可行性,在此基础上通过FLAC^3D数值模拟,研究刚性地基加筋土挡墙的力学特性及其影响因素。在进行数值模拟时,通过改变筋材的长度、竖向间距和刚度及有无连接件,探讨其对挡墙背后水平土压力的影响。研究结果表明,筋材模量及连接件对墙背水平土压力的影响最为显著,采用合理的筋材设计参数组合,可以有效减小墙背处的水平土压力及墙面板位移,提高挡墙的整体稳定性。在实际工程中两个因素都应该引起重视,研究结果可为相关工程提供一定的参考及建议。

Parameter Analysis on Horizontal Earth Pressure Affecting the Back of Reinforced Soil Retaining Wall

Combined with horizontal earth pressure data behind the panel obtained by centrifugal model test of reinforced earth retaining wall,the feasibility of numerical simulation is verified.On the basis of FLAC^3D numerical simulation,mechanical properties and influencing factors of reinforced earth retaining walls on rigid foundations are studied.In the numerical simulation,by changing the length,vertical spacing and stiffness of the ribs and the presence or absence of connectors,the horizontal earth pressures behind reinforced soil retaining walls are discussed.The results of the study indicate that the modulus of the reinforcement and the joints have the most significant effect on the horizontal earth pressure behind the panel.The reasonable combination of the design parameters of the reinforcement can effectively reduce the horizontal earth pressure and displacement of the wall and improve the overall stability of the retaining wall.Both parameters should be taken seriously in practical engineering.The research results can provide some references and suggestions for related projects.