摘要
近年来,随着我国组合结构桥梁的迅猛发展,中小跨径钢板组合梁得到广泛应用。针对30~40 m的中小跨径四主梁钢板组合梁,通过有限元方法建立全桥三维空间模型进行稳定分析,研究横向联结系的设计参数(数量、截面尺寸和竖向位置)对于中小跨径钢板组合梁稳定性能的影响。计算分析表明,当钢主梁发生整体的弯扭失稳时,增加横向联结系数量、增大横向联结系构件截面、将横向联结系靠近受压翼缘布置等措施能够提高钢主梁稳定性;而当主梁受压翼缘受局部稳定控制时,改变横向联结系的设计参数对于钢主梁稳定性影响较小。
In recent years,with the rapid development of steel-concrete composite girders in China,small and medium-span steel composite bridges have been widely used.In this paper,a three-dimensional model of the 30~40m composite girder with four main girders was established by FEM method to study the influence of the parameters of the transverse connection system,such as number,size and vertical position on the stability performance.The result showed that when the overall instability of the steel girder occurred,increasing the number and size of the transverse connection system or arranging it close to the compression flange could improve the stability performance of the main girder;while when the local stability of the compression flange occurred,changing the design parameters of the transverse connection system had little impact on the stability performance of the main girder.
作者
施维
季云峰
余金山
林立宏
SHI Wei;JI Yunfeng;YU Jinshan;LIN Lihong
出处
《上海公路》
2021年第1期47-51,M0004,M0005,共7页
Shanghai Highways
基金
自然科学基金(51978501)
浙江省公路管理局科研项目(ZJXL-SGL-201803)
浙江省公路管理局科研项目(ZJXL-SGL-201803)
台州市路泽太高架快速路有限公司(鄞州至玉环公路椒江洪家至温岭城东段公路工程公路中小跨径钢混组合梁桥成套技术研究)。
关键词
钢板组合梁
有限元
稳定性能
横向联结系
steel-concrete composite beam
finite element analysis
stability behavior of steel structure
transverse connection system
