钢管混凝土叠合柱高墩极限承载力影响因素分析  

Analysis of The Affected Factors of Ultimate Bearing Capacity of High Pier of Concrete Filled Steel Tubular Columns

作　　者：彭卫兵[1] 熊志洪[1] 潘晓东[1] 钱波[1] 

机构地区：[1]浙江工业大学建筑工程学院,杭州310014

出　　处：《科技通报》2012年第9期24-27,30,共5页Bulletin of Science and Technology

基　　金：交通部西部交通建设科技基金资助项目(200831822343);公路工程桥梁施工危险性较大工序风险因素辨识与控制技术研究(2010H17)

摘　　要：基于钟善桐教授的钢管混凝土结构统一理论及本构关系,利用ABAQUS建立钢管混凝土叠合柱高墩模型进行计算分析,主要考虑初始缺陷、横缀管、斜缀管、桥墩自重、含钢率5种因素对高墩极限承载力的影响。结果表明,初始缺陷、桥墩自重、含钢率对桥墩极限承载力影响较大,增大或减小趋势较为明显,而横缀管、斜缀管在截面长宽小于0.2 m时,对极限承载力的影响不大,在截面长宽大于0.2 m时,对极限承载力的影响较大。Based on the unified theory of concrete filled steel tube of professor Zhong Shantong, using ABAQUS established the model of high pier of concrete filled steel tubular columns , and then analyzed the change of ultimate bearing capacity under the affected factors as the initial defect, horizontal decorated tube, oblique decorated tube, pier weight and the rate of steel . The result shows that the initial defect, pier weight and the rate of steel can affect the ultimate bearing capacity of concrete filled steel tubular columns in a large extent. When the cross-section＇s length and width of the horizontal decorated tube and oblique decorated tube less than 0.2m, the affected of the ultimate bearing capacity is not obvious, but when the cross-section＇s length and width grealer than 0.2m, the impact on the ultimate bearing capacity is very greater.

关 键 词：钢管混凝土 极限承载力 影响因素 初始缺陷 

分 类 号：TU375[建筑科学—结构工程]