空心板桥改造及加宽后对横向受力的影响  

Influence of reconstruction and widening on transverseforce of hollow slab bridge

作　　者：李春良[1] 侯磊 李芒原 张洪军 林志豪 刘翔 LI Chun-liang;HOU Lei;LI Mang-yuan;ZHANG Hong-jun;LIN Zhi-hao;LIU Xiang(School of Communication Science and Engineering,Jilin Jianzhu University,Changchun 130118,China;The First Construction Co.Ltd.of CSCEC 7th Division,Beijing 100162,China;Zhongqing Construction Co.Ltd.,Changchun 130062,China)

机构地区：[1]吉林建筑大学交通科学与工程学院,长春130118 [2]中建七局第一建筑有限公司,北京100162 [3]中庆建设有限责任公司,长春130062

出　　处：《沈阳工业大学学报》2023年第3期354-360,共7页Journal of Shenyang University of Technology

基　　金：吉林省教育厅科学研究项目(JJKH20220292KJ);吉林省科技发展计划项目(20190303138SF)。

摘　　要：为了研究空心板桥在换板或加宽后桥梁的横向受力状态,基于铰接板法建立了多截面尺寸的空心板桥横向力学模型,对几种换板及加宽工况进行了计算,并将计算结果与ANSYS结果进行了对比.结果表明:换板时采用较宽的新板能有效降低各旧板的荷载横向分布系数,新板越宽降低效果越明显,并且两侧换板比仅换一侧时更明显;空心板桥加宽后,如横向车数不变,各旧板分担到的荷载会降低;横向车数增加,各旧板的荷载横向分布系数明显增大,此时应对旧板进行加固.在桥梁维护中,可用所提模型完成对空心板桥的换板及加宽设计.In order to study the transverse force state of hollow slab bridge after slab replacing or widening,a transverse mechanical model suitable for various sectional sizes was established in terms of the hinge-jointed slab method.Several conditions for slab replacing and widening were calculated,and the model accuracy was verified by ANSYS.The results indicate that new wider slabs can effectively reduce the transverse load distribution coefficient of old slabs.The reduction effect is proportional to the width of new slabs,and the bilateral slab replacing is much better than the unilateral slab replacing.After bridge widening,load shared by each old slab will decrease in the case of original transverse vehicle number,and will significantly increase with this number.At the same time,the old slabs should be considered for reinforcement.The as-proposed model can be used to accomplish the replacing and widening design for hollow slab bridge in the future.

关 键 词：桥梁工程 空心板桥 桥梁加宽 板加固 荷载横向分布系数 铰接板法 不同截面尺寸 

分 类 号：TU997[建筑科学—市政工程]