湖南大学学报（自然科学版）2024，Vol.51Issue(5)：34-45,12.DOI:10.16339/j.cnki.hdxbzkb.2024045
钢-混凝土组合简支桥面连续结构横向应力分析
Transverse Stress Analysis of Link Slabs in Simply-supported Steel-concrete Composite Beam Bridges
摘要
Abstract
This study examines the transverse bridge stresses of the link slab for the disaster such as the structural crack in the simply-supported steel-concrete composite bridge.The link slab's deflection and stress distribution functions are determined using linear elastic theory and the partial differential equation of the plate.A nonlinear finite element model is also established based on actual bridge load testing.The theoretical solution,finite element solution,and real bridge load test results are compared to validate the theoretical solution and finite element.The study shows that the upper face of the link slab at the end of the steel girder experiences the maximum tensile stress in the direction of the transverse and longitudinal bridge.The paper also explores the impact of the link slab area size on the peak stress in the transversal bridge direction.Results reveal that smaller longitudinal beam spacing and longer longitudinal beam end length increase the maximum transversal tensile stress of the link slab,causing the link slab to develop cracks before reaching the design load.Therefore,for a jointless bridge with a small longitudinal girder spacing and a long girder end length,only calculating the mechanical performance in the longitudinal bridge direction yields dangerous calculation results.It is advisable to consider the transverse bridge direction stress according to the method in this paper.关键词
钢-混凝土组合桥(SCCBs)/桥面连接板/横桥向应力分析/有限元法(FEM)/连续桥面简支梁桥Key words
steel-concrete composite bridges(SCCBs)/link slab/transverse bridge stress analysis/finite element method(FEM)/simply-supported beam bridge with continuous deck分类
交通工程引用本文复制引用
胡志坚,杜威,樊文胜,周知..钢-混凝土组合简支桥面连续结构横向应力分析[J].湖南大学学报（自然科学版）,2024,51(5):34-45,12.基金项目
江西省交通运输厅科技项目(2021C0004),Science and Technology Project of Department of Transportation of Jiangxi Province(2021C0004) （2021C0004）
