耐候钢-砼组合加劲梁悬索桥极限承载力退化规律研究OACSCDCSTPCD
Study on Degradation Law of Ultimate Bearing Capacity of Weathering Steel-concrete Composite Stiffened Beam Suspension Bridge
为制定预防性维护方案提供支撑,探究了悬索桥极限承载力随时间长期退化规律.以我国某公路耐候钢-砼组合加劲梁悬索桥为工程背景,建立了考虑钢梁、主缆和吊索三类主要钢构件截面特性与力学性能随时间退化模型;利用梁格法,采用Mises屈服准则,考虑几何非线性和材料非线性,基于U.L.列式编制杆系有限元计算程序,计算分析了 3种最不利荷载工况下的悬索桥的弹塑性极限承载力.结果表明:耐候钢梁的截面积损失 4.5%～11.7%,吊索截面积损失6.8%,主缆截面积损…查看全部>>
In order to provide support for the formulation of preventive maintenance programs,the long-term degradation of the ultimate bearing capacity of suspension Bridges with time is explored.Based on the engineering background of a composite stiffened beam suspension bridge in China,which incorporates weathering steel andconcrete,a degradation model was established for the section charac-teristics and mechanical properties of its three main components:steel beam,…查看全部>>
王子挺;朱劲松
水利工程智能建设与运维全国重点实验室(天津大学),天津 300350水利工程智能建设与运维全国重点实验室(天津大学),天津 300350||滨海土木工程结构与安全教育部重点实验室,天津 300072
交通运输
腐蚀退化极限承载力双重非线性荷载系数悬索桥
corrosion degradationultimate bearing capacitydouble nonlinearityload coefficientsuspension bridge
《防灾减灾工程学报》 2023 (6)
1377-1385,1394,10
国家自然科学基金面上项目(52078333)、天津市交通运输科技发展计划项目(2019B-21)资助
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