建筑钢结构进展2025，Vol.27Issue(4)：35-46,12.DOI:10.13969/j.jzgjgjz.20231018001
负弯矩作用下全宽预应力预制桥面板组合梁力学性能研究
Mechanical Property of Full-Width Prestressed Precast Bridge Deck Composite Beams Under Negative Bending Moment
摘要
Abstract
Compared with block precast bridge deck,transverse full-width prestressed precast bridge deck has better integrity,faster construction,and a better application prospect in assembled composite beam bridge.The wet joint connection of the precast bridge deck under negative bending moment is the key part of the composite beam.Therefore,the mechanical properties of full-width prestressed precast bridge deck composite beam under negative bending moment are studied,the influence of the number of transverse prestressed bars,the arrangement of prestressed bars,the degree of shear connection and the materials at the joints on the mechanical properties such as structural failure mode,cracking load,bending bearing capacity and load-displacement curve is made clear,and the stress distribution at the joints of precast slabs is revealed.An improved effective moment of inertia superposition method for deflection calculation of precast bridge deck composite beams with complete shear connection is proposed,which considers the influence of longitudinal and transverse prestress and is in good agreement with the numerical results.For composite beams with partial shear connection,the domestic and foreign codes are compared,and it is concluded that the Standard for Design of Steel Structures in China is more applicable.关键词
横向全宽预制桥面板/组合梁/预应力/负弯矩/精细化有限元模拟/改进有效惯性矩叠加法Key words
transverse full-width precast bridge deck/composite beam/prestress/negative bending moment/refined finite element simulation/improved effective moment of inertia superposition method分类
土木建筑引用本文复制引用
陈娟,严锴,李懿峰,吴浩,李枝军..负弯矩作用下全宽预应力预制桥面板组合梁力学性能研究[J].建筑钢结构进展,2025,27(4):35-46,12.基金项目
国家自然科学基金(52078249),南京航空航天大学研究生教育教学改革研究项目(2022YJXGG23) （52078249）
