简支梁桥的桥面连续结构局部应力分析  

Local stress analysis of the continuous deck of the simply supported girder bridge

作　　者：林文[1] 刘名琦 庄一舟[3] 赖焕林[2] LIN Wen;LIU Mingqi;ZHUANG Yizhou;LAI Huanlin(Fujian Provincial Key Laboratory of Advanced Technology and Information in Civil Engineering,Fujian University of Technology,Fuzhou 350118,China;College of Civil Engineering,Fuzhou University,Fuzhou 350108,China;College of Civil Engineering and Architecture,Zhejiang University of Technology,Hangzhou 310014,China)

机构地区：[1]福建工程学院福建省土木工程新技术与信息化重点实验室,福建福州350118 [2]福州大学土木工程学院,福建福州350108 [3]浙江工业大学建筑工程学院,浙江杭州310023

出　　处：《福建工程学院学报》2019年第4期321-325,336,共6页Journal of Fujian University of Technology

基　　金：福建省教育厅项目(JAT170382)

摘　　要：以实际工程为背景,采用有限元建模方法研究简支梁桥桥面连续结构的配筋率、桥面系施工顺序等参数。分析表明,当桥面连续结构的配筋率超过1.2%时,混凝土的拉应力随着配筋率的增大而增大;若改变施工顺序将不利于桥面连续结构的受力。因此,在桥面连续结构设计中,建议采用1.2%的配筋率,同时也可采用施工顺序1进行施工。Taking a practical project as the background,the finite element modeling was adopted to study such parameters as the reinforcement ratio and the construction sequence of the bridge deck system of the simply supported girder bridge as well as other parameters.Results show that when the reinforcement ratio of continuous deck exceeds 1.2%,the tensile stress of concrete increases with the increase of reinforcement ratio,and changing the construction sequence will be unfavorable to the transverse load distribution of the continuous deck.It is suggested to adopt a reinforcement ratio of 1.2%in the design of continuous deck,and to adopt Construction Sequence 1.

关 键 词：简支梁桥 桥面连续结构 配筋率 施工顺序 拉应力 

分 类 号：TU473[建筑科学—结构工程]