双柱型花瓶式弧形墩有限元模拟及受力分析  

Finite Element Simulation and Stress Analysis of Double-column Vase-style Curved Pier

作　　者：李浩 李伟 刘锐[2] 巴力 张少国 尤明龙 Li Hao;Li Wei;Liu Rui;Ba Li;Zhang Shaoguo;You Minglong(Anhui Construction Engineering Investment Group Co.,Ltd.,Hefei 230031,China;Faculty of Engineering,China University of Geosciences(Wuhan),Wuhan 430074,China)

机构地区：[1]安徽建工建设投资集团有限公司,合肥230031 [2]中国地质大学(武汉)工程学院,武汉430074

出　　处：《科技通报》2024年第6期94-100,109,共8页Bulletin of Science and Technology

基　　金：国家自然科学基金(42277165、41920104007)。

摘　　要：双柱型花瓶墩由于具有系梁,其受力特征更为复杂。本文针对双柱型花瓶式弧形墩进行有限元模拟和力学分析。对比分析了现浇花瓶墩与装配式花瓶墩在上部荷载作用下受力和变形特点,分析了在极限荷载条件下的盖梁湿接缝处塑性区域及裂纹扩展机理。研究表明:盖梁上表面主要承受拉应力,装配式混凝土在接缝处的受力性能不如整体现浇,接缝处为受拉薄弱区域,易在荷载作用下产生拉裂。研究结果对于双柱型花瓶式弧形墩的设计和施工具有重要的参考价值。The double-column vase-style pier has more complex stress characteristics due to the presence of tie beams.This paper conducts finite element simulation and mechanical analysis on the double-column vase-style curved pier.A finite element model was established for cast-in-place vase-style curved pier and assembled vase-style pier,and the stress and deformation characteristics of cast-in-place vase-style pier and assembled vase-style pier under the upper load were compared and analyzed.The plastic zone and crack propagation mechanism at the wet joint of the cap beam under extreme load conditions were analyzed.It is demonstrated shown that tensile stress is the main stress near the up-per surface of the cap beam,and the mechanical performance of prefabricated concrete at the joints is not as good as that of cast-in-place concrete.The joints are weak in tension and are prone to tensile failure under load.The research re-sults have important reference value for the design and construction of double-column vase-style curved piers.

关 键 词：花瓶墩 有限元分析 力学机制 装配式建造 

分 类 号：U443.2[建筑科学—桥梁与隧道工程]