风作用下高层建筑结构的刚度中心
|
摘要
本文通过2种方法计算风作用下不规则高层建筑结构的扭矩,给出相应的高层建筑结构刚度中心的定义。方法1:通过分析“楼面偏心距”,得出等效静荷载作用的扭矩,每楼层扭矩等于该楼层以上的各个楼层扭矩之和,加州结构工程师协会标准(SEAOC)推荐此方法。方法2:通过分析“楼层偏心距”,得出等效静荷载作用的扭矩,每楼层扭矩等于该楼层以上的各个楼层扭矩之和,UBC推荐此方法。最后,通过简单例子给出2种方法的具体计算步骤,为高层建筑结构的抗风设计提供参考。
This paper provides the definition of the center of rigidity of irregular high-rise building through analyzing the torsional moment on the high-rise building under wind action with two approaches.One approach uses the floor eccentricities,in conjunction with the static equivalent loading to calculate the floor torques.The story torsional moment is then obtained by summing the floor torques above the story.This approach was suggested in the Recommended Lateral Force Requirements and Commentary by the Structural Engineers Association of California.The second approach uses story eccentricities,in conjunction with the static equivalent loading to calculate the story torques.This approach was suggested by Uniform Building Code.In the end,a simple example is worked out in detail to show the steps involved in each approach.It provides the reference for high-rise building design.
This paper provides the definition of the center of rigidity of irregular high-rise building through analyzing the torsional moment on the high-rise building under wind action with two approaches.One approach uses the floor eccentricities,in conjunction with the static equivalent loading to calculate the floor torques.The story torsional moment is then obtained by summing the floor torques above the story.This approach was suggested in the Recommended Lateral Force Requirements and Commentary by the Structural Engineers Association of California.The second approach uses story eccentricities,in conjunction with the static equivalent loading to calculate the story torques.This approach was suggested by Uniform Building Code.In the end,a simple example is worked out in detail to show the steps involved in each approach.It provides the reference for high-rise building design.
引文
[1]张相庭.工程结构风荷载理论及抗风计算手册[M].上海:同济大学出版社,1990.
[2]GB50011-2001,建筑抗震设计规范[S].
[3]纽马克(Newmark,N.M.),罗森布鲁斯(Rosenb lueth.E.)著.叶耀先,译.地震工程学原理[M].北京:中国建筑工业出版社,1986.
[4]L in T Y.Lateral Force d istribution in a concrete bu ild ing story[J].Journal of The Am erican Institute1951,281~296.
[5]李宏男,著.结构多维抗震理论与设计方法[M].北京:科学出版社,1998.
[6]Cheung V W T,TsoW K.Eccentricity in irregu larmu ltistory bu ild ings[J].Canad ian J.of C iv.Engrg.,1986,13(1):46~52.
[7]TsoW K Static eccentricity conception for torsionalmom ent estimations[J].Journal of Structure Engineering,1990,116:1199~1212.
[8]JG J3-2002,高层建筑混凝土结构技术规程[S].
[9]JG J99-98,高层民用建筑钢结构技术规程[S].
[2]GB50011-2001,建筑抗震设计规范[S].
[3]纽马克(Newmark,N.M.),罗森布鲁斯(Rosenb lueth.E.)著.叶耀先,译.地震工程学原理[M].北京:中国建筑工业出版社,1986.
[4]L in T Y.Lateral Force d istribution in a concrete bu ild ing story[J].Journal of The Am erican Institute1951,281~296.
[5]李宏男,著.结构多维抗震理论与设计方法[M].北京:科学出版社,1998.
[6]Cheung V W T,TsoW K.Eccentricity in irregu larmu ltistory bu ild ings[J].Canad ian J.of C iv.Engrg.,1986,13(1):46~52.
[7]TsoW K Static eccentricity conception for torsionalmom ent estimations[J].Journal of Structure Engineering,1990,116:1199~1212.
[8]JG J3-2002,高层建筑混凝土结构技术规程[S].
[9]JG J99-98,高层民用建筑钢结构技术规程[S].
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心