劲性填芯PHC管桩与承台连接节点抗弯试验研究  

Study on the Flexural Performance of Connection Joint Between Steel Composite Core Filling PHC Pile and Pile Cap

作　　者：张伟[1] 贺武斌[1] 郭昭胜[1] 白晓红[1] 

机构地区：[1]太原理工大学建筑与土木工程学院,山西太原030024

出　　处：《施工技术》2014年第13期34-37,41,共5页Construction Technology

基　　金：山西省留学人员科技活动择优资助项目(80010402020028)

摘　　要：在地震作用下,空心管桩的抗弯承载力通常较弱,工程中常使用填芯PHC管桩改善其抗弯性能,但普通填芯管桩桩身仍存在缺陷,因此提出劲性填芯PHC管桩,对其与承台连接节点受弯特性进行了试验研究,描述了试件的裂缝特征及破坏形态,并分析其在不同荷载下应变曲线的变化及抗弯承载力的大小,研究表明,劲性填芯PHC管桩大幅度提高了管桩抗弯承载力,改善了管桩脆性性能,可应用于实际工程建设中。The flexural capacity of the hollow pipe pile is usually weak under the earthquake action, so PHC pipe pile filled with core is used to improve the bending performance. However, defects still exist in common core pipe pile body. The experiments on the flexural performance of connection joint between steel composite core filling PHC pipe pile and pile cap were carried out. The crack characteristics and failure mode of the specimens were described and the change of strain curve under the different load and size of flexural capacity were analyzed. The study shows that steel composite core filling PHC pipe pile has improved largely the flexural capacity and the brittle performance of pipe pile, and it can be used in the practical engineering.

关 键 词：桩基础 PHC管桩 抗弯承载力 试验 

分 类 号：TU473.11[建筑科学—结构工程]