摘要
在混凝土本构关系中引入损伤因子的概念。应用有限单元法和强度折减法分析深基坑围护结构在临近路面行车荷载作用下的响应和稳定性的变化。计算结果表明,当基坑外侧行车荷载较大时,混凝土结构将进入损伤阶段,此时,考虑混凝土损伤的基坑围护桩变形更大,也更接近工程实际,同时,基坑的稳定性安全系数呈现大幅度减小的趋势。
The damaged factors was introduced into the constitutive relationship of concrete.The finite element method and strength reduction method are used to analyzed the response and stability of deep foundation pit under the traffic load.It is found that when the traffic load is larger,that the damage ofconcrete structure will occur,when the damage of concrete is considered,the deformation ofpiles is larger,and also closer to the actual.And at the same time.The stability factor of safety of the pit is decreasing dramatically.
作者
陈建永
CHEN Jian-yong(Construction Cost Service Centre of Suqian,Suqian 223800,China)
出处
《工程建设与设计》
2023年第17期38-41,共4页
Construction & Design for Engineering
关键词
深基坑
变形
损伤
稳定性分析
deep foundation pit
deformation
damage
stability analysis
