摘要
以软土场地中桩锚支护结构为研究对象,其中锚索自由段位于软土层,锚固段位于粘土层。结合现场实测数据与数值模拟方法分析了软土基坑桩锚支护结构的工作性状,结果显示:在软土场地中,锚索试验状态与实际工作状态存在差别,即实际工作中锚索还承受径向的土压力。锚索锚固段的轴力分布有别于岩石锚索,即软土中锚索锚固段整体受力。在实际工作状态中由于锚索的受力特征,桩锚结构存在转动现象,这一现象将加剧基坑的变形。
Based on the measured data of pile-anchor in soft soil free section of anchor cable is located in the soft soil layer and the anchorage section is located in the clay layer.The working performance of pile-anchor supporting structure due to the characteristics of the anchor cable in soft soil foundation pit is analyzed by numerical simulation.The results show that in the soft soil,the test state of the cable and the actual working state are different,that is,the actual work of the anchor also bears the radial earth pressure.The axial force distribution of anchor anchorage section is different from that of rock anchor cable,that is,in soft soil,the entire anchorage section is subjected to force.In the actual working state,there is a rotation phenomenon to pile anchor structure and this phenomenon will aggravate the deformation of the foundation pit.
作者
邵勇
朱进军
葛阳成
SHAO Yong;ZHU Jinjun;GE Yangcheng(Lianyungang Technical College,Department of Architectural Engineering, Lianyungang 22006, China;Lianyungang City Construction Construction Drawing Review Center, Lianyungang 22006, China)
出处
《结构工程师》
北大核心
2019年第4期212-217,共6页
Structural Engineers
基金
江苏省建设系统科技项目(2015ZD37)
住房和城乡建设部科技计划项目(2015-K3-023)
连云港市科技计划项目(SH1513)
关键词
海相软土
锚索
承载力
工作状态
marine soft soil
anchor cable
bearing capacity
working state
