钢管混凝土框架结构与钢筋混凝土框架结构抗震性能比较

发布时间：2018-06-29 00:06

本文选题：钢管混凝土框架结构 + 钢筋混凝土框架结构　；参考：《建筑结构学报》2015年S1期

【摘要】：对往复荷载作用下钢管混凝土框架结构进行了有限元模拟,并与试验结果进行比较,结果表明有限元分析值和试验值吻合较好。在此基础上,采用时程分析法比较钢管混凝土框架结构和钢筋混凝土框架结构在天津波作用下的动力响应,比较了框架顶层位移和加速度,综合评定二者的抗震性能。分析结果表明:在多遇地震作用下,二者顶层位移均小于3 mm,顶层加速度均小于70 mm/s~2,框架结构处于弹性状态,钢管混凝土框架结构较钢筋混凝土框架结构的抗震性能优越性不明显;在罕遇地震作用下,钢管混凝土框架结构顶层最大位移和加速度分别为14.06 mm、409.50 mm/s~2,钢筋混凝土框架结构顶层最大位移和加速度分别为15.60 mm、199.36 mm/s~2,框架结构处于弹塑性状态,钢管混凝土框架结构比钢筋混凝土框架结构承担更多地震作用,钢管混凝土框架结构的抗震性能明显优于钢筋混凝土框架结构。
[Abstract]:The finite element simulation of CFST frame structure under reciprocating load is carried out, and the results are compared with the experimental results. The results show that the finite element analysis value is in good agreement with the experimental value. On this basis, the dynamic responses of concrete-filled steel tubular frame structure and reinforced concrete frame structure under the action of Tianjin wave are compared by time-history analysis, and the displacement and acceleration of the top floor of the frame are compared, and the seismic performance of the two structures is comprehensively evaluated. The results show that the displacement of the top floor is less than 3 mm, the acceleration of the top layer is less than 70 mm / s ~ (2), and the frame structure is in an elastic state. The seismic performance of CFST frame structure is not obvious than that of reinforced concrete frame structure. The maximum displacement and acceleration of the top floor of CFST frame structure are 14.06 mm ~ 409.50 mm / s ~ (-2), respectively, and the maximum displacement and acceleration of the top layer of reinforced concrete frame structure are 15.60 mm / 199.36 mm / s ~ (-2) respectively. The frame structure is in an elastic-plastic state. Concrete filled steel tubular frame structure bears more earthquake than reinforced concrete frame structure, and the seismic behavior of concrete filled steel tube frame structure is obviously better than that of reinforced concrete frame structure.
【作者单位】：天津大学建筑工程学院;河北工业大学土木工程学院;海军工程大学勤务学院;
【基金】：国家自然科学基金项目(51379142) 河北省教育厅青年基金项目(QN20131177)
【分类号】：TU398.9

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