结构工程师2024，Vol.40Issue(3)：107-117,11.
先简支后桥面板连续体系桥面板抗裂性能研究
Crack Resistance of Multi-Span Simply-Supported Steel Beams with a Continuous Concrete Deck
摘要
Abstract
Multi-span simply-supported steel beams with a continuous concrete deck is a new type of steel-concrete composite system.In this system,a certain separation length of steel beam-concrete deck is set in the negative moment region,which can improve the stress state in the negative moment region of the concrete deck.At present,there are no experimental researches on the new system.In this study,a two-span quarter-scale model is designed and made based on the actual design of a steel-concrete composite system bridge,and the separation length in the negative moment region of the concrete deck is adjusted by installing and removing shear studs.Then,the influence of the separation length on the stress state and crack resistance of the concrete deck is studied by simulating a half heavy axle load on the deck.Finally,the crack resistance of the prototype bridge is analyzed.It is shown that the separation section of steel beam-concrete deck can significantly improve the crack resistance of the system.This study is of great significance to popularize the application of the system of multi-span simply supported steel beams with a continuous concrete deck and promote the development of prefabrication and assembly technology of bridge structures.关键词
钢混组合结构/先简支后桥面板连续/抗裂性能/分离段长度/最不利位置Key words
steel-concrete composite structure/multi-span simply supported steel beams with a continuous concrete deck/crack resistance/separation length/the weakest position引用本文复制引用
刘安,彭天波,闫博洋,习明星,胡成志,林昱,林道锦..先简支后桥面板连续体系桥面板抗裂性能研究[J].结构工程师,2024,40(3):107-117,11.基金项目
国家自然科学基金资助项目(51878489) （51878489）
