辅助墩加固公路空心板简支梁的应用  

Application of Subsidiary Pier Reinforce of Hollow Slab Simply Support Beam of Highway Bridge

作　　者：张健 ZHANG Jian

机构地区：[1]上海浦江桥隧运营管理有限公司,上海200030

出　　处：《上海公路》2024年第2期71-75,132,I0011,共7页Shanghai Highways

摘　　要：针对空心板梁端头裂缝导致的梁体抗剪强度降低,以某高速公路桥简支梁其中一跨为例,介绍了辅助墩加固的结构形式和施工方法,并对加固后的空心板梁裂缝进行了持续监测。结果表明:辅助墩加固空心板简支梁可有效限制梁的裂缝发展,提高桥梁上部结构的承载能力。加固后,应对辅助墩定期进行维护保养,避免因支座脱空而导致加固系统失效。In this paper,aiming at the reduction of shear strength of the beam caused by the crack at the end of the hollow plate girder,using the simple support beam of a specific highway bridge as an example to introduce the structural form and construction method of auxiliary pier reinforcement,and continuously monitors the cracks of the hollow plate girder after reinforcement.The results show that the reinforcement through an auxiliary pier can effectively limit the crack development of the beam,improve the bearing capacity of the bridge superstructure,and the auxiliary pier should be regularly maintained after reinforcement to avoid the failure of the reinforcement system due to the emptying of the support.

关 键 词：辅助墩 混凝土裂缝 桥梁加固 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]