冷弯型钢结构住宅的抗震设计方法研究
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摘要
根据冷弯型钢结构房屋的受力特征,将其性能划分为正常使用、可修和不倒塌三个水平,结构的目标位移根据其性能水平确定,并采用层间位移角予以量化;根据弹塑性动力时程分析结果,假定冷弯型钢结构房屋的位移模式为倒三角形式。借鉴线弹性单自由度体系的位移反应谱计算方法,提出冷弯型钢结构房屋的弹性和弹塑性位移反应谱的求解方法。
Displacement based seismic design method of cold-formed steel framing residential buildings is studied in this paper.According to the mechanical characteristics of cold-formed steel framing residential buildings,classify its performance into three different levels: serviceability,immediate occupancy and collapse prevention.The target displacement of the structure is represented by story drift ratio and determined by its performance level.Based on the nonlinear time history analysis result,assume the displacement distribution model of cold-formed steel framing residential building is inverted triangular distribution.Referring to the calculating method of displacement response spectrum in linear elastic SDOF system,the method for solving the elastic and plastic-elastic displacement response spectrums of cold-formed steel framing residential buildings is proposed.
Displacement based seismic design method of cold-formed steel framing residential buildings is studied in this paper.According to the mechanical characteristics of cold-formed steel framing residential buildings,classify its performance into three different levels: serviceability,immediate occupancy and collapse prevention.The target displacement of the structure is represented by story drift ratio and determined by its performance level.Based on the nonlinear time history analysis result,assume the displacement distribution model of cold-formed steel framing residential building is inverted triangular distribution.Referring to the calculating method of displacement response spectrum in linear elastic SDOF system,the method for solving the elastic and plastic-elastic displacement response spectrums of cold-formed steel framing residential buildings is proposed.
引文
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[2]Fül p L A,Dubina D.Performance of wall-stud cold-formed shearpanels under monotonic and cyclic loading Part I:experimental research[J].Thin-Walled Structures,2004(42):321-338.
[3]Yoshimichi K.Seismic resistance and design of steel-framed house[J].Nippon Steel Technical Report No 79,1999:6-16.
[4]GB50011-2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
[5]胡聿贤.地震工程学[M].地震出版社,北京,1988.
[6]石宇.水平地震作用下多层冷弯型钢结构住宅的抗震性能研究[D].西安:长安大学,2008.
[7]范立础,卓卫东.桥梁延性抗震设计[M].北京:人民交通出版社,2001.
[2]Fül p L A,Dubina D.Performance of wall-stud cold-formed shearpanels under monotonic and cyclic loading Part I:experimental research[J].Thin-Walled Structures,2004(42):321-338.
[3]Yoshimichi K.Seismic resistance and design of steel-framed house[J].Nippon Steel Technical Report No 79,1999:6-16.
[4]GB50011-2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
[5]胡聿贤.地震工程学[M].地震出版社,北京,1988.
[6]石宇.水平地震作用下多层冷弯型钢结构住宅的抗震性能研究[D].西安:长安大学,2008.
[7]范立础,卓卫东.桥梁延性抗震设计[M].北京:人民交通出版社,2001.
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