钢管钢骨高强混凝土偏压承载力非线性分析  

Nonlinear Analysis of Circular Steel Columns Filled with Steel-Reinforced High-Strength Concrete Subjected to Eccentric Compression Load

作　　者：刘晓[1,2] 王兵[1] 李光 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110004 [2]沈阳大学建筑工程学院,辽宁沈阳110044 [3]沈阳市建筑研究院工程师事务所,辽宁沈阳110006

出　　处：《沈阳建筑大学学报（自然科学版）》2009年第2期286-289,共4页Journal of Shenyang Jianzhu University：Natural Science

基　　金：辽宁省教育厅科技攻关项目(2008468);辽宁省重点实验室开放基金项目(JG200706)

摘　　要：目的研究钢管钢骨高强混凝土偏压构件的静力性能.方法采用纤维模型法模拟组合柱的荷载-变形关系,分析长细比、偏心距、配骨指标和套箍指标对组合柱力学性能的影响.结果确定了钢管钢骨高强混凝土偏压非线性分析程序;荷载-变形曲线可以分为弹性、弹塑性和塑性三个阶段,长细比、偏心距对极限荷载的影响较显著,配骨指标的增加改善了构件的延性.结论纤维模型法计算结果与试验结果吻合较好,计算程序的确定促进了其在工程实践中的应用.To analyze the static performance of eccentrically compressed circular steel columns filled with steel-reinforced high-strength concrete（STSRCH） members, the fiber model approach is employed to simulate the load-deflection relationship on the eccentrically compressed STSRCH members by stress-stain relationship of this column. Influences of slenderness ratio, eccentricity, steel-reinforced index and confining index on static performance of the eccentrically compressed STSRCH are analyzed too. In result, nonlinear procedure is given, and the feature of load-deflection relationship on eccentrically compressed column is summarized. The road-deflection curve can be divided into three stages. The calculating result goes well with that of the document, which means that the fiber model approach is effective in analyzing load-deflection relationship on the STSRCH members, and calculative procedure can promote application of this member in the engineering.

关 键 词：荷载-变形关系 偏心受压 纤维模型法 长细比 高强混凝土 

分 类 号：TU398.9[建筑科学—结构工程] TV335[水利工程—水工结构工程]