城市高架桥基础抢险加固施工及监测关键技术  

Key technique for construction and monitoring of viaduct foundation emergency reinforcement

作　　者：叶锡钧[1] 孙卓[1] 曹飒飒[1] 

机构地区：[1]广州大学土木工程学院,广州510006

出　　处：《桂林理工大学学报》2017年第2期311-315,共5页Journal of Guilin University of Technology

基　　金：国家自然科学基金青年科学基金项目(51608136);2016年广州大学新苗计划项目(2608)

摘　　要：某高架桥基础因地质灾害原因发生较大的侧向偏移与不均匀沉降,根据原桥梁结构形式和现场施工环境特点,决定采用在原基础下新增钢管桩群,并在钢管桩群上浇筑新承台的加固方案。在桥底净空受限和地质情况复杂的条件下,对如何新增桩基和承台等施工关键技术进行了研究,并制定了相应的监测措施,最终形成成套施工及监测技术。Lateral displacement and uneven settlement of v iaduct foundations are usual ly caused by geological disaster. According to the bridge structural type and the construction environment cha rac ter istics, a new re in -forcement scheme was appl ied. By adding new steel pipe group under the original ba sis, then a new cap was poured on the steel pipe group. This paper discusses the key technique fo r construction and monitoring o f the new reinforcement scheme under l imited clearance and complicated geological con ditions. A complete construc-tion and monitoring technology was summarized.

关 键 词：基础 抢险加固 施工 监测 关键技术 

分 类 号：TU753[建筑科学—建筑技术科学] U445.72[建筑科学—桥梁与隧道工程]