异型钢混梁拱组合桥V墩局部受力参数化分析  

Parametric analysis of local stresses in the V pier of special-shapedsteel-concrete arch composite bridges

作　　者：王达 周勇 黄伟 潘志云 谭本坤 徐文波 WANG Da;ZHOU Yong;HUANG Wei;PAN Zhiyun;TAN Benkun;XU Wenbo(School of Civil Engineering,Changsha University of Science&Technology,Changsha 410114,China;School of Civil Engineering,Central South University of Forestry and Technology,Changsha 410114,China;Zhejiang Jiantou Traffic FoundationConstruction Group Co.,Ltd.,Hangzhou 310000,China;The Fourth Engineering Co.,Ltd.,ChinaCommunications Construction Company First Highway Engineering,Nanning 530033,China)

机构地区：[1]长沙理工大学土木工程学院,湖南长沙410114 [2]中南林业科技大学土木工程学院,湖南长沙410114 [3]浙江省建投交通基础建设集团有限公司,浙江杭州310000 [4]中交一公局集团第四工程有限公司,广西南宁530033

出　　处：《浙江工业大学学报》2023年第2期152-159,共8页Journal of Zhejiang University of Technology

基　　金：国家自然科学基金资助项目(51878072);湖南省科技创新计划资助项目(2020RC4049)。

摘　　要：为研究异型钢混梁拱组合桥V墩局部受力参数的影响,利用大型空间有限元程序建立了异型钢混梁拱组合桥的全桥杆系模型,得出V墩结构关键部位在承载力极限状态下的受力;结合ABAQUS建立了V墩空间有限元精细化计算模型,得到V墩墩身厚度、混凝土强度和倾斜角度对结构的应力及变形的影响。结果表明:墩身厚度为400 cm时,对上部结构和墩身受力、变形影响效益最佳,且对各部位应力与变形最大影响为40%~75%。混凝土强度对结构应力与变形影响较小,且最大影响值多在10%内。倾斜角度对结构应力与变形影响较大,倾斜角度为70°~80°时,此类梁拱组合桥受力、变形和跨越能力综合性能最佳,该研究对同类桥型设计施工具有借鉴意义。In order to study the influence of local stress parameters of the V-pier of special-shaped steel-concrete beam arch composite bridges,a whole bridge frame model is established based on a large-scale spatial finite element program,and the stresses in the key parts of the V-pier structure in the limit state of bearing capacity are obtained.Combined with ABAQUS,the spatial finite element refinement calculation model of the V pier is established,and the effects of V pier body thickness,concrete strength and inclination angle on the stresses and deformations of the structure are obtained.The results show that a pier body thickness of 400 cm has the best effect on the stresses and deformations of the superstructure and pier body,and the maximum effect on the stresses and deformations of each part is from 40%to 75%.The concrete strength has little influence on the structural stresses and deformations,and the maximum influence value is mostly within 10%.The inclination angle has a great influence on the structural stresses and deformations.When the inclination angle is from 70°to 80°,the comprehensive performance of stress,deformation and span capacity of this kind of beam arch composite bridge is the best.This study provides a reference for the design and construction of similar bridges.

关 键 词：梁拱组合桥 V形墩 有限元 路径应力 路径变形 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]