摘要
为研究地震作用下不同岸坡地形、不同截面型式桥墩的地震动水压力特性,针对3种截面型式下的混凝土桥墩开展了振动台试验。结果表明,高水位时不同截面型式下的桥墩对动水压力的影响较大,且圆端形截面型式优于矩形截面以及变截面型式桥墩;水体反射波一定程度上会加剧动水压力峰值,且对变截面型式桥墩下的动水压力特性影响最为显著。
In order to study the characteristics of the seismic water pressure of piers with different bank slopes and different cross-sections under earthquake action,this paper carried out shaking-table tests on concrete piers with three cross sections.The test results show that the piers with different cross sections have a greater impact on the hydrodynamic pressure at high water level,which with the round-end cross section is better than which with the rectangular cross section and the variable cross-section pier.In addition,the reflected wave of the water body will aggravate the peak of hydrodynamic pressure to a certain extent,and has the most significant impact on the characteristics of hydrodynamic pressure under the variable cross-section bridge pier.
作者
李均进
熊露瑶
张焱焜
李嵩林
李想
LI Junjin;XIONG Luyao;ZHANG Yankun;LI Songlin;LI Xiang(Yunnan Provincial Highway Science and Technology Research Institute,Kunming 650051;School of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074;China Merchants Chongqing Communications Technology Research and Design Institute Co.,Ltd.,Chongqing 400067)
出处
《公路交通技术》
2021年第6期87-94,共8页
Technology of Highway and Transport
基金
云南省交通运输厅科技项目(云交科教[2018]13号)。
关键词
桥墩
截面型式
动水压力
振动台试验
地震
bridge pier
section form
hydrodynamic pressure
shaking table experiment
earthquake
