摘要
对大直径钻埋预应力混凝土空心桩这种新型的桩基础结构进行研究,根据其结构特点,利用以概率统计为基础的极限状态计算方法,在建立相应计算模型的基础上,推导出该桩型在偏心荷载时正截面极限承载力的计算公式。该公式的建立对现行《公路桥函设计规范》中没有偏心受压荷载下预应力混凝土构件的理论计算公式进行了补充,也为完善大直径空心桩结构的设计计算理论奠定了基础。
As the latest type of pile foundation structure, the structural features of large diameter bored hollow pile of prestressing force concrete were studied, the formula of calculating its normal section extreme bearing capacity under eccentric load was deduced with the computation method of limiting condition based on probability statistics. This formula makes a supplement for the theoretical computing formula of prestressing force concrete member without eccentric load in “design specifications of highway bridge and culvert”,it also lays a foundation for the design of large diameter hollow pile.2 figs, 7 refs.
出处
《长安大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2005年第3期49-53,共5页
Journal of Chang’an University(Natural Science Edition)
关键词
桥梁工程
预应力混凝土空心桩
偏心荷载
计算模型
承载力
bridge engineering
prestressing concrete hollow pile
eccentric load
calculation model
bearing capacity
