嵌入既有桥台锥坡偏压基坑变形特性研究  

STUDY ON DEFORMATION CHARACTERISTICS OF BIASED FOUNDATION PIT EMBEDDED IN EXISTING ABUTMENT CONE SLOPE

作　　者：邵广彪[1,3] 梁村 荣伟 刘国辉 SHAO Guang-biao;LIANG Cun;RONG Wei;LIU Guo-hui(School of Civil Engineering,Shandong Jianzhu University,250101,Ji'nan,China;China Communications First Public Bureau Third Engineering Co.,Ltd.,101102,Beijing,China;Key Laboratory of Building Structural Retrofitting and Underground Space Engineering,Ministry of Education,250101,Ji'nan,China;Engineering Research Institute of Apprais)

机构地区：[1]山东建筑大学土木工程学院,济南250101 [2]中交一公局第三工程有限公司,北京101102 [3]建筑结构加固改造与地下空间工程教育部重点实验室,济南250101 [4]山东建筑大学工程鉴定加固研究院有限公司,济南250013

出　　处：《建筑技术》2024年第20期2551-2555,共5页Architecture Technology

基　　金：国家自然科学基金(52038006)。

摘　　要：新建大桥墩柱紧邻既有大桥桥台锥坡,墩柱承台基坑嵌入既有桥台锥坡形成偏压基坑,为研究嵌入桥台锥坡偏压基坑的变形特性,研究基于济南黄河大桥扩建项目墩柱承台基坑支护工程进行了分析,结果表明:增强偏压侧围护结构刚度,合理确定拆撑方案,提高承台基坑回填强度,避免桥台锥坡变形。The newly built bridge pier columns are adjacent to the existing bridge abutment cone slope,and the pier column abutment foundation pit is embedded into the existing bridge abutment cone slope to form a biased foundation pit.In order to study the deformation characteristics of the embedded abutment cone slope biased foundation pit,an analysis was conducted on the pier column abutment foundation pit support engineering based on the Jinan Yellow River Bridge expansion project.The results showed that enhancing the stiffness of the biased side retaining structure,reasonably determining the dismantling plan,improving the backfill strength of the abutment foundation pit,and avoiding deformation of the bridge abutment cone slope.

关 键 词：偏压基坑 桥台锥坡 变形特性 

分 类 号：TU433[建筑科学—岩土工程]