贵州省地质资料馆暨地质博物馆弹塑性时程分析

Elastic-plastic time-history analysis of Guizhou Geological Archives and Geological Museum under rare earthquakes

通过自行编制地震波转换及处理程序,选取了三组天然地震波和一组人工波,采用动力弹塑性时程分析方法对贵州省地质资料馆暨地质博物馆在罕遇地震作用下的抗震性能进行了分析。结果表明:在罕遇地震作用下,该结构的钢框架最大弹塑性层间位移角小于规范的限值;连体部位及相邻上、下层的框架柱、框架梁和斜撑均处于弹性状态,在罕遇地震作用下抗震承载力足够;在考虑几何非线性情况下,结构在罕遇地震作用下的最大顶点位移为123.7mm,并仍基本保持直立,满足'大震不倒'的设防要求。贵州省地质资料馆暨地质博物馆的设计达到了预定的抗震设防目标。

Seismic behavior of Guizhou Geological archives and Geological museum was studied by conducting inelastic time history analysis method under severe earthquakes,which includes three earthquake records and one artificial wave selected by self-made seismic wave transfer and processing program. The result indicates that the maximum displacement angle of steel frame under severe earthquake is less than the limit value,the connective trusses and adjacent beams,columns and bracesare still in the elastic stage,and the seismic bearing capacity of the structure is adequate under rare earthquakes. In the consideration of geometric non-linearity,the maximum vertex displacement of the structure under the rare earthquake is 123. 7 mm,and the structure basically remains perpendicular,so the building achieves the seismic fortification target of no collapsing in strong earthquake,and the intended seismic precautionary objective of the project is achieved.