摘要
为探讨负弯矩区栓钉类型和横梁设置形式对钢板组合连续梁桥荷载横向分布的影响规律,以城市快速路高架桥(30+45+30)m钢板组合连续梁桥为背景,建立桥梁有限元模型,分析了边、中跨各主梁的横向影响线分布规律.针对2种栓钉类型(抗拔不抗剪栓钉和普通栓钉)和3种横梁形式(满布、间断设置和不设置),以荷载横向分布系数为指标,对比研究了近支点和跨中位置的荷载横向分布.结果表明:采用抗拔不抗剪栓钉时,桥梁近支点位置的荷载横向分布系数减小5%;不同横梁设置形式桥梁在近支点位置的横向分布系数差异达20%以上,当采用设置间断横梁时横向分布系数最小.采用抗拔不抗剪栓钉或间断横梁形式,可有效减小横向分布系数最大值.
The aim of this paper is to study the effects of stud types in negative moment area and transverse girder arrangements on the lateral load distributions of the steel-plate composite continuous girder bridge.To accomplish this,a(30+45+30)m steel-plate composite continuous girder bridge of the urban expressway viaduct was taken as the background.The finite model of bridge was established,and the lateral distribution influence-lines on each main girder in side span and middle span were analyzed.Two types of studs(uplift-restricted and slip-permitted stud and ordinary stud)and three forms of girder types(full arrangement,discontinuous arrangement and no arrangement)were selected as the research objects.Then,the load lateral distribution factor(LDF)near the support and at the mid-span was studied.The results show that the maximum LDF near the support decreases by about 5%,for the uplift-restricted and slip-permitted(URSP)stud is utilized.The LDF near the support differs by more than 20%for different transverse girder arrangements,and the LDF is the smallest for the discontinuous arrangement of transverse girder.When the URSP stud or the discontinuous arrangement of transverse girder are utilized,the maximum value of LDF can be effectively reduced.
作者
王思伟
陈双庆
WANG Siwei;CHEN Shuangqing(Hunan Zhongda Design Institute Co.Ltd.,Changsha 410075,China;School of Civil Engineering and Architecture,Hunan University of Arts and Science,Changde 415000,China)
出处
《江苏科技大学学报（自然科学版）》
CAS
北大核心
2022年第4期114-118,共5页
Journal of Jiangsu University of Science and Technology:Natural Science Edition
基金
湖南省交通运输厅科技进步与创新项目计划(202013)。
关键词
市政桥梁
横向分布系数
钢板组合梁
连续梁
抗拔不抗剪栓钉
横梁设置形式
municipal bridge
lateral distribution factor
steel-plate composite girder
continuous girder
uplift-restricted and slip-permitted stud
transverse girder arrangement
