防灾减灾工程学报2017，Vol.37Issue(2)：194-200,7.DOI:10.13409/j.cnki.jdpme.2017.02.003
冠梁约束型抗滑桩与普通抗滑桩的抗震性能对比试验研究
Research on Seismic Capacity Correlative Experiment of Top Beam Binding Anti-slide Pile and Common Anti-slide Pile
摘要
Abstract
In order to study the seismic performance of pile top combined beam structure under vibration,with large shaking table test as a means,we compare and study the dynamic response of anti-slide pile with pile top and coupling beam and ordinary anti-slide pile under different El Centro seismic ground motion,and draw the following conclusions:(1) With the increase of the peak value of El Centro ground motion,the anti-slide pile side amplification coefficient and the pile side earth pressure constantly increase.(2) Due to the effect of the crown beam,the force condition of anti-slide pile structure is changed.(3) Under the action of vibration in X direction,the amplification coefficient at the top of anti-slide pile with crown beam is larger than that of the top of ordinary anti-slide pile;Under the action of vibration in Z direction,there is a contrary result;Under the action of vibration in XZ direction,the difference of the amplification factor of the different kinds of piles top is related to the peak acceleration.(4) With the increase of vibration,a new shear slip line may be produced in the bedrock surface.(5) Under the action of vibration,when the El Centro seismic peak acceleration is not more than 1.2g,the seismic performance of the constrained anti-slide pile is relatively better.This experiment can provide a reference for design of anti-seismic structure.关键词
动力响应/振动台试验/抗滑桩Key words
dynamic response/shaking table test/anti-pile分类
建筑与水利引用本文复制引用
艾挥,吴红刚,冯文强,陈小云..冠梁约束型抗滑桩与普通抗滑桩的抗震性能对比试验研究[J].防灾减灾工程学报,2017,37(2):194-200,7.基金项目
国家自然科学基金项目(51178402)、甘肃省自然科学基金项目(145RJZA068)、青海省交通建设科研项目(2010-03)资助 （51178402）
