准静态侧向撞击下钢筋混凝土圆柱桥墩破坏模式判别  

JUDGMENT OF COLLAPSE MODES OF REINFORCED CONCRETE CYLINDRICAL PIERS UNDER QUASI-STATIC LATERAL IMPACT

作　　者：谢中友 潘建华[3] XIE Zhong-you;PAN Jian-hua(College of Architectural Engineering,Tongling University,Tongling,Anhui 244061,China;Institute of Geotechnical Engineering,Tongling University,Tongling,Anhui 244061,China;Institute of Industry&Equipment Technology,Hefei University of Technology,Hefei,Anhui 230009,China)

机构地区：[1]铜陵学院建筑工程学院,安徽铜陵244061 [2]铜陵学院岩土工程研究所,安徽铜陵244061 [3]合肥工业大学工业与装备技术研究院,安徽合肥230009

出　　处：《井冈山大学学报（自然科学版）》2020年第4期77-82,共6页Journal of Jinggangshan University (Natural Science)

基　　金：安徽省高校省级自然科学研究重点项目(KJ2018A0481);中央高校基本科研业务费专项基金(PA2019GDPK0054)。

摘　　要：当大质量车辆高速撞击桥墩时,产生的巨大撞击力可能导致桥墩损伤甚至破坏。本研究准静态侧向撞击下,钢筋混凝土圆柱桥墩的破坏模式。首先根据经典结构力学理论得到桥墩截面最大内力,结合钢筋混凝土圆形截面抗剪、抗弯承载力计算式,得到钢筋混凝土圆柱桥墩抗侧向撞击破坏的强度条件,最后得到剪切、弯曲、剪切弯曲三种破坏模式的判别标准。采用ABAQUS有限元软件对三种工况进行模拟研究,结果表明破坏模式判别标准具有很好的有效性。When a heavy vehicle at a high velocity impacts a bridge pier,the large reaction force generated could cause the pier damage and even collapse.Judging standards for the collapse modes are investigated in the paper.The maximum internal forces are derived based on classical elastic theory,and the strength conditions of lateralimpact collapse of reinforced concrete cylindrical piers are obtained according to previous formulations.Finally,the judging standards for the three collapse modes such as shearing,bending and shearing-bending are obtained.In addition,by using ABAQUS finite element code,three cases are simulated and the results demonstrate good agreement with the models predicted.

关 键 词：钢筋混凝土 圆柱桥墩 侧向撞击 破坏模式 

分 类 号：TU375.3[建筑科学—结构工程]