型钢-UHPC轻型组合梁的受力性能研究  

Study on Mechanical Performance of Steel-UHPC Lightw eight Composite Beams

作　　者：黄晓明 王振龙 王领 文阳 冯家辉 邵旭东[2] Huang Xiaoming;Wang Zhenlong;Wang Ling;Wen Yang;Feng Jiahui;Shao Xudong(Guangdong Road and Bridge Construction Development Co.,Ltd.,Guangzhou 510990,China;College of Civil Engineering,Hunan University,Changsha 410082,China)

机构地区：[1]广东省路桥建设发展有限公司,广东广州510990 [2]湖南大学土木工程学院,湖南长沙410082

出　　处：《市政技术》2025年第3期52-57,共6页Journal of Municipal Technology

基　　金：广东交通集团科技项目:UHPC在高速公路桥梁改扩建工程中的关键技术研究及应用(JT2023YB03)。

摘　　要：在充分利用超高性能混凝土(UHPC)的卓越抗压强度和抗拉性能的前提下,结合型钢无需焊接、残余应力小、成本低、施工周期短等优势,提出了一种新型的型钢-UHPC轻型组合梁结构。该结构以其轻质、跨距适中、无需预应力、高耐久性和全寿命成本低等特点,为桥梁工程的设计提供了新的思路,并以京港澳高速公路上的某座60 m简支梁桥为案例,通过整体计算和有限元分析,研究了型钢-UHPC组合梁在正常使用极限状态和承载能力极限状态下的结构响应,验证了其在60 m简支梁桥中应用的可行性和有效性。Being the excellent compressive strength and tensile performance,that incorporation of UHPC and steel has advantages of eliminating welding requirements,reducing residual stresses,lowering costs,and shortening construction periods.A novel steel-UHPC lightweight composite beam structure is proposed.This structure,characterized by lightweight properties,moderate span length,prestressed-free,high durability,low cost of the whole life-cycle,offers a new design concept for bridge engineering.A 60 m simply supported bridge on the Beijing-Hong Kong-Macao Expressway is selected as an example.Through the general calculation and finite element simulation,the structural response of the steel-UHPC composite beam are investigated under both the serviceability limit state and the ultimate limit state,validating its feasibility and effectiveness in 60 m simply supported bridge.

关 键 词：超高性能混凝土 轻型组合梁 力学性能 有限元分析 结构响应 

分 类 号：U448.38[建筑科学—桥梁与隧道工程] U445.4[交通运输工程—道路与铁道工程]