两种大直径嵌岩桩极限承载力比较分析  

Comparative Analysis on Ultimate Bearing Capacity of Two Large Diameter Rock-socketed Piles

作　　者：陈金锋[1] 杜文龙[1] 姚凯[1] 王跃文[1] 

机构地区：[1]后勤工程学院建筑设计研究院,重庆400041

出　　处：《地下空间》2004年第4期516-518,共3页Underground Space

摘　　要：运用有限元计算软件ANSYS计算了两种大直径嵌岩桩轴心受压的受力情况。结果表明:桩型二不仅能提高嵌岩桩的极限承载力,还能改善嵌岩桩与岩体界面处以及桩本身的受力性能,有利于岩体塑性区的充分发展。在实际施工过程中,施工条件允许时,建议采用桩型二形式的嵌岩桩。The loading state of two types of large-diameter rock socketed piles under axial compression is calculated using FEM software ANSYS. The results show that the type Ⅱ pile can enhance the ultimate bearing capacity of socketed pile and improve the loading performance of interface between the socketed pile and rock body as well as of pile itself, which is beneficial to the full development of plastic zone of the rock. It is suggested to apply the type Ⅱ socketed pile, if the construction condition permits.

关 键 词：大直径嵌岩桩 极限承载力 桩型 轴心受压 受力性能 施工过程 岩体 有限元计算软件 施工条件 塑性区 

分 类 号：TU473[建筑科学—结构工程] U655.551[建筑科学—土工工程]