不同桥墩布置形式下有轨电车小半径曲线桥地震响应研究  

Study on Seismic Response of Small Radius Curved Girder Bridge of Tramcar Under Different Pier Arrangement

作　　者：王泓煜 焦驰宇[1,2] 阮良奉 乔宏 WANG Hongyu;JIAO Chiyu;RUAN Liangfeng;QIAO Hong(Engineering Structure and New Materials Research Center of Beijing Higher Education Institution Beijing University of Civil Engineering and Architecture,Beijing 100044;Beijing Advanced Innovation Center for Future Urban Design,Beijing University of Civil Engineering and Architecture,Beijing 100044;Multi-Functional Shaking Tables Laboratory,Beijing University of Civil Engineering and Architecture,Beijing 100044;China Railway 5th Survey Design Institute Group Co.Ltd,Beijing 102600)

机构地区：[1]北京建筑大学工程结构与新材料北京市高等学校工程研究中心,北京100044 [2]北京建筑大学未来城市设计高精尖创新中心,北京100044 [3]北京建筑大学大型多功能振动台阵实验室,北京100044 [4]中铁第五勘察设计院集团有限公司,北京102600

出　　处：《北京建筑大学学报》2024年第1期75-83,共9页Journal of Beijing University of Civil Engineering and Architecture

基　　金：国家自然科学基金项目(52078023)。

摘　　要：为适应现代交通的发展需要,有轨电车小半径曲线桥得到广泛应用。而由于曲线桥的几何非规则性,其地震响应相较其余桥型更为强烈和复杂,如何在设计时尽可能减小曲线桥震害值得深入研究。以某实际工程项目为背景,分别建立不同桥墩墩高布置形式的三维有限元模型,通过非线性动力时程分析,探究了等高型、渐变型、凹岛型以及凸岛型等布置形式下各个桥墩的内力响应与位移响应,并为曲线桥的抗震设计提出建议。通过对比与分析表明:有轨电车小半径曲线桥在抗震设计中应优选等高型布置形式,尽量避开渐变型,且在实际工程中需注意对固定墩采取必要的抗震构造措施。In order to meet the development needs of modern traffic,the small radius curved bridge of tramcar has been widely used.Because of the irregular nature of the curved bridge,its seismic response is more intense and complex than that of other bridge types.How to minimize the seismic damage of curved bridge in design is worth in-depth study.Based on a practical project,the three-dimensional finite element models of different pier height arrangements are established.Through nonlinear dynamic time history analysis,the internal force response and displacement response of each pier under the arrangement of equal height,gradient,concave island and convex island are investigated,and some suggestions are put forward for seismic design of curved bridges.Through comparison and analysis,it is shown that in the seismic design of the small radius curved bridge of tram,the equal height layout should be preferred,and the gradient type should be avoided as much as possible,and the necessary seismic reinforcement measures should be taken for the fixed piers in practical engineering.

关 键 词：有轨电车 小半径曲线梁桥 桥墩布置形式 地震响应 

分 类 号：U24[交通运输工程—道路与铁道工程]