PHC管桩水平承载特性现场试验研究  

Field Test for the Behavior of PHC Pipe Piles under Lateral Loads

作　　者：梁发云[1] 李彦初[1] 袁贵兴[2] 任鹏[2] 

机构地区：[1]同济大学地下建筑与工程系,上海200092 [2]四川省建筑科学研究院,成都610081

出　　处：《结构工程师》2014年第2期133-138,172,共6页Structural Engineers

基　　金：中央高校基本科研业务费专项资金项目;四川省建筑科学研究院科技基金项目(ZD-14)

摘　　要：PHC管桩近年来得到了广泛应用,目前对其水平承载特性的研究还不够充分。针对PHC管桩受水平荷载作用的问题,在成都地区某典型土层对11根PHC管桩进行水平静载荷试验,实测得到了PHC管桩受水平力作用时的变形、内力和临界荷载等,分析了PHC管桩的抗弯性能,并通过拟合得到该地区地基水平抗力比例系数m的计算公式。当缺乏实测资料时,拟合得到的m值计算公式可为类似土层中的预应力管桩分析提供参考。PHC pipe piles have been widely applied in practical engineering projects in recent years, while the research on bearing capacity of PHC pipe piles under lateral loads is still not sufficient. To investigate the behavior of PHC pipe piles under lateral loading, this paper conducts a series of field tests on 11 PHC pipe piles in Chengdu areas. With the deformation, internal forces and critical loads obtained, the bending behavior is analyzed and an empirical formula of the proportional coefficient of lateral resistance is put forward, which is applicable to the corresponding areas. In addition, the empirical formula of lateral resistance coefficients can be useful for the design of PHC pipe piles in similar areas even if the measured data is insufficient.

关 键 词：PHC管桩 水平承载力 静载荷试验 水平抗力比例系数 

分 类 号：TU473.1[建筑科学—结构工程]