混凝土正交斜放空间网格盒式多筒结构体系性能分析
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摘要
为研究正交斜放空间网格盒式多筒结构体系的抗震性能和经济效益,以某拟建工程为例,基于大型通用有限元软件ANSYS建立真实模型,采用振型反应谱分解法,通过与普通框架—多筒结构进行对比,分析了在地震作用下结构的周期、层间位移、层间位移角,并且进行了经济技术指标分析。结果表明:新型混凝土网格盒式结构在多遇地震作用下,结构自身的动力特性较好,竖向刚度均匀,层间位移和层间位移角均满足规范要求;并且在顶点位移相等的情况下,新型盒式结构总体质量更轻,更加的经济,更加节约层高。
To study the seismic performance and economic efficiency of an orthogonal skew space grid multi-tube structure system,based on a construction project,a finite model of the structure is established. By comparing with the general frame-multi-tube structure,the periodicity,interlayer displacement and interlaminar displacement angle of the structure under earthquake are analyzed,and the economic and technical indexes are analyzed. The results show that the dynamic characteristics of the new concrete grid box structure are good under the action of earthquake,the vertical stiffness is uniform,and the interlayer displacement and the interlaminar displacement angle all meet the requirements of the specification. In the case of the same vertex displacement,the new structure is lighter,more economical,and more conservation in floor height.
To study the seismic performance and economic efficiency of an orthogonal skew space grid multi-tube structure system,based on a construction project,a finite model of the structure is established. By comparing with the general frame-multi-tube structure,the periodicity,interlayer displacement and interlaminar displacement angle of the structure under earthquake are analyzed,and the economic and technical indexes are analyzed. The results show that the dynamic characteristics of the new concrete grid box structure are good under the action of earthquake,the vertical stiffness is uniform,and the interlayer displacement and the interlaminar displacement angle all meet the requirements of the specification. In the case of the same vertex displacement,the new structure is lighter,more economical,and more conservation in floor height.
引文
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[3]马克俭,张华刚,肖建春,等.新型建筑结构体系的开拓与发展[J].贵州工业大学学报(自然科学版),2008,37(4):13-27+43.
[4]LIU Hai-feng.LOU Rong,LUO Yao-zhi,et al.Multi-scaled simulation of latticed frames considering bending collapse of pipes[J].Journal of Chongqing University(English Edition),2012,6(4):167-176.
[5]JAMES B J,VITOMIR R,CHEN J.Universal response spectrum procedure for predicting walking-induced floor vibration[J].Mechanical Systems and Signal Processing,2016,31(10):741-755.
[6]王其明,马克俭,陈志华,等.钢筋混凝土密肋网格式框架—核心筒结构体系性能分析[J].建筑结构,2013,43(7):34-37.
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[8]中华人民共和国住房和城乡建设部.建筑抗震设计规范:GB50011-2010[S].北京:中国建筑工业出版社,2010.
[9]陈佳琪,马克俭,申波.超高层钢筋混凝土空间网格盒式成束筒结构性能分析[J].建筑结构,2015,45(7):12-16.
[10]CHEN J,XU R T,ZHANG M S.Acceleration response spectrum for predicting floor vibration due to occupant walking[J].Journal of Sound and Vibration,2014,333:3564-3579.
[11]扶长生,张小勇,周立浪.框架—核心筒结构体系及其地震剪力分担比[J].建筑结构,2015,45(4):1-8.