海洋环境下钢筋混凝土桥墩的抗冲击力学性能影响因素分析  

Analysis on effect factors of lateral anti-impact properties of the reinforced concrete pier in ocean environment

作　　者：董文燕 方从启[1] 杨帅[1] 袁智杰[1] 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200240

出　　处：《混凝土》2017年第12期58-62,共5页Concrete

基　　金：铁道部科技研究开发计划项目(J2011G003);国家自然科学基金项目(51178264)

摘　　要：为了研究海洋环境下受腐蚀钢筋混凝土桥墩的抗冲击力学性能影响因素,运用显式动力学软件LS-DYNA分析了桥墩抗侧向冲击的力学性能,并分别从主筋腐蚀率、主筋直径、箍筋直径、撞击速度几个方面出发,依次分析各个因素对桥墩抗冲击力学性能的影响。结果表明:主筋直径的增大可提高桥墩的抗冲击性能;主筋腐蚀率的增大及撞击速度的提高均会降低桥墩的抗冲击性能;箍筋直径对抗冲击性能的影响较小。In order to study the effect factors of the impact on the mechanical behavior of corroded reinforced concrete bridge piers subjected to corrosion in the marine environment,the mechanical properties of the bridge piers against lateral impact were analyzed by using the explicit dynamic software LS-DYNA.Besides,varioos effect factors of lateral anti-impact properties of the reinforced concrete pier were analyzed, for example, corrosion ratio of main reinforcement, diameter of main rebar, diameter of stirrup, impact velocity.The results show that the increasing of the diameter for main rebar can impreve the anti-impact properties of bridge pier.The increase in the rate of main reinforcement corrosion and impact velocity will reduce the anti-impact properties of piers.The diameter of stirrup rebar has the less influence on the anti-impact mechanical properties of bridge pier

关 键 词：海洋环境 桥墩 冲击 力学性能 影响因素 

分 类 号：TU528.01[建筑科学—建筑技术科学]