某公路桥梁下部结构抢修加固处理技术  

Technology of Emergency Repair and Reinforcement of the Substructure of a Highway Bridge

作　　者：薛华 陈光林 汤勤 XUE Hua;CHEN Guang-lin;TANG Qin(Changzhou Traffic Construction Management Co.,Ltd,Changzhou Jiangsu 213000 China)

机构地区：[1]常州交通建设管理有限公司,江苏常州213000

出　　处：《江苏建筑》2021年第5期69-72,共4页Jiangsu Construction

摘　　要：某公路跨DJ河桥是20世纪90年代初期修建的空心板桥,其桥台结构为浆砌片石结构,由于地基沉降等原因,桥台出现了较为严重的裂缝。为了确保行车安全,对桥梁的裂缝产生机理进行了分析,并制订了压力注浆的技术方案,对地基和台背回填土进行压力注浆,对浆砌片石圬工体进行钻小孔压力注浆的方式加固,加固后的效果良好。经试验监测,这种圬工砌体压力注浆加固方式可以推广应用,对同类桥梁的维修保养提供了一个新的思路。A highway bridge across DJ river is a hollow slab bridge built in the early 1990s.Its abutment structure is a mortar rubble structure.Due to the foundation settlement and other reasons,there are more serious cracks on the abutment.In order to ensure the safety of driving,this paper analyzes the mechanism of the cracks of the bridge,and formulates the technical scheme of pressure grouting.The pressure grouting is carried out on the foundation and abutment backfill,and the small hole pressure grouting is carried out on the mortar rubble masonry.The reinforcement effect is good.Through the test monitoring,this masonry pressure grouting reinforcement method can be popularized and applied,which provides a new idea for the maintenance of similar bridges.

关 键 词：圬工结构 压力注浆 桥梁加固 地基加固 

分 类 号：U443.21[建筑科学—桥梁与隧道工程]