摘要
为了研究土工格室柔性挡墙设计参数对土压力的影响,应用有限元方法,根据工程实际建立了有限元模型。在考虑墙体与土体的力学、变形和接触等情况下,通过改变墙体的厚度、坡比、弹性模量、重度、粘聚力和内摩擦角等设计参数,对挡墙的土压力进行弹塑性分析。结果表明:不同的墙体参数变化对土压力及其分布的影响存在明显差异;墙体厚度、坡比和弹性模量等参数的变化对墙背土压力及分布的影响比较显著;粘聚力和内摩擦角在一定范围内变化时,对墙背土压力及分布有影响,超出范围不对土压力产生影响;墙体重度的变化对土压力影响很小。
In order to study the influence of design parameters of geocell flexible wall on earth pressure,the finite element model is developed by taking the case of wall with soil mechanics,deformation and contact information in consideration.The elastic-plastic analysis of earth pressure for the retaining wall is carried out by changing the wall design parameters of thickness,slope ratio,elastic modulus,severe,cohesion and internal friction angle,etc.The results show that: the different parameters of the wall have different influences on the earth pressure and its distribution;the change of the thickness,slope ratio and elastic modulus can significantly affect the earth pressure and its distribution;the cohesion and the internal friction angle can affect earth pressure and the distribution in a certain range,and the soil pressure do not change if the cohesion and the internal friction angle is out of the range;the change of wall volume weight has little influence on earth pressure.1 tab,9 figs,9 refs.
出处
《长安大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2009年第6期6-9,共4页
Journal of Chang’an University(Natural Science Edition)
基金
国家西部交通建设科技项目(200131881259)
关键词
道路工程
土工格室
柔性挡墙
参数变化
土压力
数值分析
road engineering
geocell
flexible wall
parameter change
earth pressure
numerical analysis
