扩孔微型桩抗震性能试验研究  

Experimental investigation on seismic performance of micropile with predrilled oversize hole

作　　者：庄一舟[1] 王胜智[1] 樊争辉 陈斌[1] 韩裕添 

机构地区：[1]福州大学土木工程学院,福建福州350116 [2]福建永福工程顾问有限公司,福建福州350108

出　　处：《福州大学学报（自然科学版）》2016年第4期510-515,523,共7页Journal of Fuzhou University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51278126);福建省自然科学基金资助项目(2013J01187)

摘　　要：对6根具有不同扩孔参数的微型桩进行室内足尺低周循环侧向加载试验,得到滞回曲线和骨架曲线,并计算耗能能力和延性系数,对其抗震性能进行评估.所得结论可为新型抗震型半整体式桥台桥梁的实际应用打下基础,对整体式桥台桥梁支承桩的扩孔技术也有一定借鉴意义.Indoor full - scale cyclic lateral loading experiments of 6 micropiles with different predrilled- hole parameters were carried out. From the experiments, their hysteresis curves and skeleton curves, as well as energy dissipation capacity and ductility were obtained to reflect seismic performance. These conclusions will make contribution to the practical application of proposed aseismic semi - integral abutment bridge and provide reference for the hole -predrilling technology in integral abutment bridges.

关 键 词：半整体式桥台桥梁 扩孔微型桩 抗震性能 耗能能力 延性 

分 类 号：U443.5[建筑科学—桥梁与隧道工程]