基于理论及有限元模型的封底混凝土最大拉应力研究  

RESEARCH ON THE MAXIMUM TENSILE STRESS IN BOTTOM SEALING CONCRETE BASED ON THEORETICAL METHOD AND FINITE ELEMENT METHOD

作　　者：周胜强 解鑫鹏 王少兵 加凯 Zhou Sheng-qiang;Xie Xin-peng;Wang Shao-bing;Jia Kai

机构地区：[1]中建三局基础设施建设投资有限公司,武汉430040

出　　处：《建筑技术开发》2023年第9期99-101,共3页Building Technology Development

摘　　要：基于某跨河大桥深水承台施工案例,论述了封底混凝土最大拉应力计算原理及计算方法,重点阐明了基于ANSYS有限元模型及平截面假定的有限元计算方法。对比分析理论及有限元模型的封底混凝土最大拉应力计算结果,明确了计算封底混凝土厚度时考虑桩基约束的必要性和合理性,工程计算宜采用桩基约束以固结形式施加的有限元方法,为类似工程计算提供参考。Based on the construction of a deep-water bearing platform of a cross-river bridge,the principle and calculation method of the maximum tensile stress of bottom sealing concrete are discussed.The finite element calculation method based on ANSYS finite element model and plane cross-section assumption is highlighted.Comparison of the maximum tensile stress calculation results about the theoretical and finite element model of the bottom sealing concrete,it is necessary and reasonable to apply pile foundation constraint when calculating the thickness of the bottom sealing concrete.And it is appropriate to use finite element method that applies constraint made by pile foundation in the form of consolidation in engineering calculations,which provides reference for similar engineering calculations.

关 键 词：桥梁 封底混凝土厚度 拉应力 ANSYS有限元模型 

分 类 号：U445.543[建筑科学—桥梁与隧道工程]