明州大桥RB混凝土钢桥面铺装性能理论分析与实测研究  

Theoretical Analysis and Experimental Study on Pavement Performance of RB Concrete Steel Bridge of Mingzhou Bridge

作　　者：徐斌 丁勇[2] 徐速 吕建华 胡风 XU Bin;DING Yong;XU Su;LV Jianhua;HU Feng(Ningbo Lubao Science and Technology Industry Group Co., Ltd., Zhejiang Ningbo, 315800 China;Ningbo university, Zhejiang Ningbo, 315211 China)

机构地区：[1]宁波路宝科技实业集团有限公司,浙江宁波315800 [2]宁波大学,浙江宁波315211

出　　处：《工程建设（维泽科技）》2019年第6期53-67,共15页Engineering Construction

摘　　要：钢桥面铺装是钢桥上部结构中直接承受车辆荷载的重要组成部分,其性能直接影响了桥梁的通行能力和长期运营状况。为了比较宁波路宝集团自主研发的RB 混凝土钢桥面铺装与普通沥青混凝土钢桥面铺装在性能上的差异,文章以明州大桥桥面铺装维修工程为依托,对更换桥面铺装更换前后的钢箱梁分别进行了静、动载试验测试,并进行了理论分析。研究结果表明:(1)明州大桥钢桥面板由沥青混凝土铺装更换为RB 混凝土铺装后,桥面板应变变小,受力性能改善;(2)沥青混凝土铺装更换为RB 混凝土铺装后,测试断面钢桥面板的自振频率增大,说明桥面板刚度得到了提高;(3)桥面铺装更换为RB 混凝土后,汽车在桥上行驶时的冲击系数变小,降低了运动车辆对桥面板的冲击作用;(4)更换铺装前后结构的最大应力均小于许用用力,具有一定强度余量,满足强度要求。Steel bridge deck pavement is an important part of steel bridge superstructure directly subjected to vehicle load, and its performance directly affects the capacity and long-term operation of the bridge. In order to compare the performance difference between RB concrete steel deck pavement and ordinary asphalt concrete steel deck pavement developed by Ningbo Lubao Group, based on the maintenance project of Mingzhou Bridge Deck pavement, the static and dynamic load tests of steel box girder before and after the replacement of bridge deck pavement are carried out, and the theoretical analysis is carried out. The results show that:(1) after the steel bridge deck of Mingzhou Bridge is replaced by asphalt concrete pavement to RB concrete pavement, the deck of Mingzhou Bridge is replaced by asphalt concrete pavement. After the asphalt concrete pavement is replaced with RB concrete pavement, the natural vibration frequency of the test section steel bridge deck increases, which indicates that the stiffness of the bridge deck is improved.(3) after the bridge deck pavement is replaced with RB concrete, the impact coefficient of the vehicle on the bridge becomes smaller, which reduces the impact effect of the moving vehicle on the bridge deck.(4) the maximum stress of the structure before and after the replacement of pavement is less than the allowable force, and has a certain strength margin to meet the strength requirements.

关 键 词：RB混凝土 钢桥面铺装 实测研究 理论分析 

分 类 号：TU986[建筑科学—城市规划与设计]