岩土工程学报2023，Vol.45Issue(z2)：110-115,6.DOI:10.11779/CJGE2023S20012
不同布锚角度锚索抗滑桩抗震性能的离心振动台试验对比
Comparative tests on seismic performance of anti-slide piles with prestressed anchor cables with different angles
摘要
Abstract
The prestressed anchor cable is an important component of the anti-slide pile of prestressed anchor cable,but the influences of its arrangement angle on the seismic performance of the anti-slide pile of prestressed anchor cable is not yet clear.To this end,a series of centrifugal model tests considering the horizontal and inclined layout of anchor cables are designed and completed.The seismic deformation and acceleration amplification characteristics of the slope are compared and analyzed under different arrangement angles of anchor cable,as well as the stress characteristics of the pile-anchor structure.It is revealed the influences of arrangement angle of anchor cable change the seismic seismic performance of the anti-slide pile of prestressed anchor cable-slope system.The results show that there is an abnormal amplification phenomenon of acceleration near the anchor point of the anchor cable under different arrangement angles of anchor cable,and the amplification coefficient increases with the increase of input seismic intensity.The settlement amplitude and acceleration amplification of the slope are significantly reduced when the inclined anchor placement is applied.The inclined anchor placement is beneficial for improving the seismic stress on the pile,and the peak dynamic bending moment and dynamic soil pressure of the pile are significantly reduced compared to those under horizontal anchor placement.The inclined anchoring method can effectively slow down the growth of internal forces in anchor cables and reduce the risk of seismic failure in the pile-anchor-slope system.关键词
地震滑坡/预应力锚索抗滑桩/离心机试验/地震响应/布锚角度Key words
earthquake landslide/anti-slide pile of prestressed anchor cable/centrifugal model test/seismic response/anchor arrangement angle of cable分类
建筑与水利引用本文复制引用
王宇,郑桐,孙锐,齐文浩,李领贵,程阳,张一鸣..不同布锚角度锚索抗滑桩抗震性能的离心振动台试验对比[J].岩土工程学报,2023,45(z2):110-115,6.基金项目
中国地震局工程力学研究所基本科研业务费专项项目(2020C02,2020C04,2019B10) （2020C02,2020C04,2019B10）
国家自然科学基金项目(51808515,41172293) （51808515,41172293）
黑龙江省自然科学基金联合引导项目(LH2020E020) （LH2020E020）
