防灾减灾工程学报2017，Vol.37Issue(6)：878-885,8.DOI:10.13409/j.cnki.jdpme.2017.06.004
地震作用下锚固滑坡动力响应研究
Study on the Dynamic Response of Anchorage System under Earthquake
摘要
Abstract
In order to study dynamic response of anchorage landslide under earthquake,large-scale shaking table model test is conducted.In this paper,sine wave,Wenchuan wave and El Centro wave as input seismic wave,dynamic properties of anchorage landslide,acceleration response and the effect of earthquake parameters on anchorage landslide are studied respectively.The results indicate that:①The main failure form of anchorage landslide under earthquake is tension destruction in the upper and shearing destruction in the bottom outside frame beam.②The anchorage landslide has amplification effect on the input seismic wave,and PGA amplification coefficient increases from bottom to top along with the landslide.③Due to the earthquake spectrum characteristics,acceleration response is different under different seismic waves;Under low strength earthquake,the closer to the natural frequency of anchorage landslide,the stronger the amplification effect will be,however,under high strength earthquake,the lower the frequency of the input wave,the stronger the amplification effect will be;Under low frequency wave,the stronger the loading earthquake,the stronger the amplification effect,while under high frequency wave,the stronger the loading earthquake,the weaker the amplification effect will be.The results could provide a reasonable foundation for the design of anchorage landslide.关键词
锚固滑坡/地震/振动台/动力响应/加速度放大效应Key words
anchorage landslide/earthquake/shaking table/dynamic response/acceleration amplification effect分类
天文与地球科学引用本文复制引用
李楠,汪班桥,门玉明,程辉..地震作用下锚固滑坡动力响应研究[J].防灾减灾工程学报,2017,37(6):878-885,8.基金项目
国家自然科学基金项目(41440021,41572261)、中央高校基本科研业务费专项资金项目(310826175029)资助 （41440021,41572261）
