基于规范的上海高层建筑风和地震作用的比较

Comparison Between Wind and Earthquake Loadings on Tall Buildings in Shanghai in Accordance with Building Structure Codes

根据中国建筑荷载规范(GBJ50009—2001)和抗震规范(GB50011—2001),比较了风、地震作用在质量、刚度均匀高层建筑上的总作用荷载、总基底弯矩响应,讨论了上海地区两种荷载作用效应相等的临界高度.比较中考虑了建筑物所在场地地貌、建筑高度、结构材料、风荷载的空间相关性等因素,对于风、地震作用的相对强弱,得出了一些有参考意义的定性结论.

The lateral response of tall building structures alwalys result from wind or earthquake excitations. However, which one takes precedence over the nother as regarding these usual lateral excitations is still of scare research. In accordance with the loading code （BGJ50009-2001） and aseismic design code of buildings （GB50011-2001）, without referring to specific structural parameters, the total forces and moments of the uniform structure brought about by wind and seismic excitations are compared. In addition, as for the equivalent response due to different excitations, the reference critical height is provided. Moreover, the factors affecting the structural response such as the physiognomy, building height, structural material style and coherence of wind loads are also taken into account in the comparison.