摘要
以宝鸡火车站附近一深基坑支护为对象,采用不同的计算方法对微型钢管桩的桩身内力、基坑整体稳定性和变形进行了计算,并采用Plaxis8.5有限元软件进行数值模拟分析。结合实际的基坑变形监测结果,对各计算方法进行对比,发现其中等刚度代换的桩锚模式和地下连续墙计算模式得到的结果更为合理。同时提出了微型钢管桩的施工要点、应注意的问题以及仍存在的难点。
Taking the supporting approach for the deep foundation pit adjacent to Baoji station as the focus of study,different calculation methods to identify the internal force of the mini-steel pile were adopted,as well as the stability and the deformation of the foundation pit.Numerical simulation were undertaken by the finite element software Plaxis 8.5.The comparison with the data obtained from deformation monitoring showed that the values calculated by equivalent stiffness pile-anchor stock and underground diaphragm wall methods were well closed to the measured values.Furthermore,the matters needing attention and problems possibly met during the pile installation were also proposed.
作者
刘卫斌
LIU Weibin(Shaanxi Railway Engineering Survey Co., Ltd., Baoji Shaanxi 721 O01, China)
出处
《铁道建筑》
北大核心
2016年第9期104-107,共4页
Railway Engineering
关键词
微型钢管桩
计算方法
等效法
有限元分析
注浆
变形监测
Mini-steel pile
Calculation method
Equivalent method
Finite element analysis
Grouting
Deformation monitoring
