钢骨高强混凝土偏压柱受力分析  

Stress Analysis of Eccentrically Loaded Steel-Framed Reinforced High-Strength Concrete Columns

作　　者：马传政[1] 李小梅 王连广[3] 张宇 李宁[5] 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]大连建筑设计研究院有限公司,辽宁大连116033 [3]东北大学结构工程研究所,辽宁沈阳110004 [4]沈阳市建设工程招标投标管理办公室,辽宁沈阳110013 [5]沈阳市开发建设管理办公室,辽宁沈阳110013

出　　处：《沈阳建筑大学学报（自然科学版）》2006年第3期388-392,共5页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家教育部博士点基金(20050145012);辽宁省自然科学基金(20052019)

摘　　要：目的研究钢骨高强混凝土柱在竖向偏心载荷作用下的受力性能．方法运用有限元法和有限条带法。考虑了材料的非线性以及构件的侧向位移与二次弯矩的相互影响，编制了钢骨高强混凝土偏压柱由开始加载直至破坏的受力全过程分析程序．结果根据程序运行结果，分析、讨论了偏心矩、混凝土强度、钢骨含钢量、纵筋配筋率及长细比等参数对钢骨高强混凝土偏压柱受力性能的影响．从而得出，钢骨含钢量越大，构件的承载能力提高越明显，钢骨的合理含钢量范围应在4％-8％．结论在一定范围内提高纵筋的配筋率，将会提高构件的承载力，并在一定程度上提高构件的延性．有限元法能够较好地模拟钢骨高强混凝土偏压柱的受力过程，并分析其工作特性．Mechanical performance of eccentrically loaded steel-framed reinforced high-strength concrete columns is discussed in this paper. Considering the nonlinear property of material, the lateral displacement and additional moment of the member, the program that simulates the whole damaged process of steelframed reinforced high-strength concrete columns was formulated by using the finite-element method and the finite strip method. Based on the results of the program, the properties of the steel-framed reinforced high-strength concrete columns under loading with the changed initial eccentricity, concrete strength, the ratio of steel skeleton, the ratio of steel bar and slenderness ratio were discussed. The ratio of steel skeleton is larger, the carrying capacity is larger, the proper ratio of steel skeleton is 4 % - 8 %. The carrying capacity and ductility will be increased by enlarging the ratio of steel bar within a certain range. The calculated results of the program made by author show that the whole damaged process of steel-framed reinforced highstrength concrete columns may be simulated exactly by the finite-element method and the finite strip method.

关 键 词：钢骨高强混凝土 偏压柱 有限元法 延性 

分 类 号：TU398[建筑科学—结构工程]