复式空心钢管混凝土柱抗压刚度
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摘要
将复式钢管混凝土空心柱分成混凝土、内钢管和外钢管三部分,将其作为拟平面轴对称问题进行分析,考虑混凝土和内、外钢管的径向位移、纵向应变协调,建立了复式钢管混凝土空心柱抗压刚度计算公式,并得到了复式空心钢管混凝土柱在轴力作用下的应力分配比。同时分析了核心混凝土泊松比、内钢管泊松比、外钢管泊松比、内钢管壁厚、外钢管壁厚对复式空心钢管混凝土柱的抗压钢管和应力分配比的影响,得到了复式空心钢管混凝土柱轴压应力不是按弹性模量比分配、内外层钢管壁厚和泊松比对彼此无显著影响等结论。
Composite concretefilled steel tube is divided into three parts: core concrete, inner steel tube and outer steel tube.As a pseudo planar problem, it was analyzed by elastic axisymmetrical method.Based on the compatibility of radial displacement and longitudinal strain,its compressive stiffness was derived, and the stress distribution ratios of core concrete, inner steel tube and outer steel tube were presented. The influence of core concrete Poisson's ratio、inner steel tubular Poisson's ratio、outer steel tubular Poisson's ratio、inner steel tubular thickness、outer steel tubular thickness on both compressive stiffness and stress distribution ratio was discussed. It is pointed out that the stress distribution ratios are not determined by elastic modulus, the thickness and Poisson's ratio of inner steel tube and outer steel tube do not influence each other greatly.
Composite concretefilled steel tube is divided into three parts: core concrete, inner steel tube and outer steel tube.As a pseudo planar problem, it was analyzed by elastic axisymmetrical method.Based on the compatibility of radial displacement and longitudinal strain,its compressive stiffness was derived, and the stress distribution ratios of core concrete, inner steel tube and outer steel tube were presented. The influence of core concrete Poisson's ratio、inner steel tubular Poisson's ratio、outer steel tubular Poisson's ratio、inner steel tubular thickness、outer steel tubular thickness on both compressive stiffness and stress distribution ratio was discussed. It is pointed out that the stress distribution ratios are not determined by elastic modulus, the thickness and Poisson's ratio of inner steel tube and outer steel tube do not influence each other greatly.
引文
[1] 韩林海.钢管混凝土结构[M].北京:科学出版社,2000.17—18.
[2] 蔡绍怀,焦占拴.复式钢管混凝土柱的基本性能和承载力计算[J].建筑结构学报,1997,18(6):20—24.
[3] 郑史雄.大跨度钢管混凝土拱桥的地震反映性能[J].西南交通大学学报,1999,34(3):320—324.
[4] 谢肖礼.圣维南原理在钢管混凝土拱桥分析中的应用[J].中国公路学报,2001,14(2):33—35.
[5] 何君雄.钢管混凝土拱桥主拱混凝土浇灌的纵向优化分段[J].武汉交通科技大学学报,2000,24(3):291—293.
[6] (CECS28-90)钢管混凝土结构设计与施工规程[S].1990.
[7] 陈宝春.钢管混凝土拱桥设计与施工[M].北京:人民交通出版社,2000.42—43.
[8] (JCJ01-89)钢管混凝土结构设计与施工规程[S].1989.
[9] (DL5099-97)钢-混凝土组合结构设计规程[S].1997.
[10]黄平明,卓 静.受箍混凝土力学机理研究[J].华东公路,2000,122(1):26—29.
[11]黄平明.内填式钢管混凝土构件受箍机理分析[J].西安公路交通大学学报,2001,21(4):43—45.
[12]甘丛石.钢管混凝土弹塑性本构方程及极限承载力[J].长沙交通学院学报,1998,14(3):68—73.
[13]殷绥域.弹塑性力学[M].北京:中国地质大学出版社,1990.154—158.
[14]徐芝纶.弹性力学(上册,第三版)[M].北京:高等教育出版社,1982.85—90.
[2] 蔡绍怀,焦占拴.复式钢管混凝土柱的基本性能和承载力计算[J].建筑结构学报,1997,18(6):20—24.
[3] 郑史雄.大跨度钢管混凝土拱桥的地震反映性能[J].西南交通大学学报,1999,34(3):320—324.
[4] 谢肖礼.圣维南原理在钢管混凝土拱桥分析中的应用[J].中国公路学报,2001,14(2):33—35.
[5] 何君雄.钢管混凝土拱桥主拱混凝土浇灌的纵向优化分段[J].武汉交通科技大学学报,2000,24(3):291—293.
[6] (CECS28-90)钢管混凝土结构设计与施工规程[S].1990.
[7] 陈宝春.钢管混凝土拱桥设计与施工[M].北京:人民交通出版社,2000.42—43.
[8] (JCJ01-89)钢管混凝土结构设计与施工规程[S].1989.
[9] (DL5099-97)钢-混凝土组合结构设计规程[S].1997.
[10]黄平明,卓 静.受箍混凝土力学机理研究[J].华东公路,2000,122(1):26—29.
[11]黄平明.内填式钢管混凝土构件受箍机理分析[J].西安公路交通大学学报,2001,21(4):43—45.
[12]甘丛石.钢管混凝土弹塑性本构方程及极限承载力[J].长沙交通学院学报,1998,14(3):68—73.
[13]殷绥域.弹塑性力学[M].北京:中国地质大学出版社,1990.154—158.
[14]徐芝纶.弹性力学(上册,第三版)[M].北京:高等教育出版社,1982.85—90.
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