摘要
钢-混组合梁具有自重小、抗震性能好且用钢少、刚度大挠度小的特点,钢-混连续组合梁与简支组合梁相比,可以提高负载能力,增强刚度,增大应用跨度。但其墩顶负弯矩区会产生混凝土受拉、钢梁受压的不利情况,通过介绍钢-混连续组合梁桥负弯矩区的裂缝控制措施,从而限制裂缝宽度、防止钢梁失稳的作用,使钢-混组合梁在负弯矩区桥面板受力性能得到有效提升,整体结构更加耐久。
The steel-concrete composite beam has the characteristics of low self-weight,good seismic performance,less steel usage,high stiffness and low flexibility.Compared with the simply-supported composite beam,the steel-concrete continuous composite beam can improve the load capacity,enhance stiffness and increase the application span,but the negative moment zone at its pier top can produce adverse situations such as concrete in tension and steel beams in compression.This paper introduces crack control measures in the negative moment zone of the steel-concrete continuous composite beam bridge to limit the crack width and prevent the steel beam from instability,so as to effectively improve the mechanical performance of the bridge deck in the negative moment zone of the steel-concrete composite beam and make the overall structure more durable.
作者
王振平
张梦源
沈理斌
WANG Zhenping;ZHANG Mengyuan;SHEN Libin(Zhejiang Hongrun Construction Co.,Ltd.,Taizhou,Zhejiang Province,318000 China;Jiaxing Expressway Construction and Development Co.,Ltd.,Jiaxing,Zhejiang Province,314000 China;Jiaxing Communication Investment Group Co.,Ltd.,Jiaxing,Zhejiang Province,314000 China)
出处
《科技资讯》
2024年第1期130-135,共6页
Science & Technology Information
关键词
负弯矩
受力
剪力键
裂缝控制
Negative moment
Force
Shear key
Crack control
作者简介
王振平(1972-),男,本科,工程师,研究方向为市政道路与桥梁施工与管理。;张梦源(1988-),女,本科,工程师,研究方向为造价管理。;通信作者:沈理斌(1977-),男,本科,高级工程师,研究方向为道路材料、桥梁结构。E-mail:171760804@qq.com。
