摘要
主要研究通过加强薄弱层的方法对高层钢框架结构的最弱失效模式进行控制的方法。首先,给出了结构的非线性计算模型和倒塌失效模式判别准则;然后,利用均匀损伤的概念,给出了高层钢框架结构的损伤模型及结构的变截面位置;最后,重点研究了高层钢框架结构的最弱失效模式中的薄弱层的加强准则。通过加强最弱失效模式中的薄弱层,可消除结构的最弱失效模式,验证了本文中地震失效模式控制方法的有效性。本文的研究表明,通过加强最弱失效模式中的薄弱层,可使高层钢框架结构的失效模式得到控制。
The control method of failure mode of tall steel frame buildings by strengthening structural weak stories is mainly studied in the paper. Firstly, the structural nonlinear calculation model and the criterion of failure mode are given. Secondly, based on the concept of uniform damage, the damage model and structural columns sections’ changing situations are given. Finally, the weak stories strengthening criterion of the weakest failure mode of tall steel frame buildings is mainly studied. The weakest failure mode can be controlled by strengthening the weak stories of the weakest failure mode. The seismic failure mode control method of tall steel frame buildings in the paper is verified by an example. The research in the paper shows that tall steel frame buildings’ seismic failure mode can be controlled effectively by strengthening the weak stories in the weakest failure mode.
出处
《地震工程与工程振动》
CSCD
北大核心
2010年第6期49-55,共7页
Earthquake Engineering and Engineering Dynamics
基金
国家重点基础研究发展计划(973)项目课题资助(2007CB714202
2007CB714204)
关键词
高层钢框架结构
失效模式控制
加强准则
整体抗震能力
tall steel frame buildings
failure mode control
strengthening criterion
integral seismic capacity
