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
李浩 1李伟 1刘锐 2巴力 1张少国 1尤明龙2
作者信息
- 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
- 折叠
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.
Abstract
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Key words
vase-style pier/finite element analysis/mechanical mechanism/prefabricated construction引用本文复制引用
基金项目
国家自然科学基金(42277165)
国家自然科学基金(41920104007)
出版年
2024
NETL
NSTL
万方数据