《钢结构与钢-混凝土组合结构设计方法》的理解与应用——钢结构抗震性能化设计

引用文献:

周佳 童根树 李常虹 刘宜丰 张磊 付波. 《钢结构与钢-混凝土组合结构设计方法》的理解与应用——钢结构抗震性能化设计[J]. 建筑结构,2022,48(18):145-150.

ZHOU Jia TONG Genshu LI Changhong LIU Yifeng ZHANG Lei FU Bo. Understanding and application of design method for steel and steel-concrete combined structures: seismic performance-based design of steel structures[J]. Building Structure,2022,48(18):145-150.

作者:周佳 童根树 李常虹 刘宜丰 张磊 付波
单位:中国建筑西南设计研究院有限公司 浙江大学高性能结构研究所 杭州铁木辛柯建筑结构设计事务所有限公司
摘要:结构抗震设计的目标是小震不坏、中震可修、大震不倒,中震下结构进入弹塑性阶段,弹塑性阶段结构的地震力如何求得,是亟需解决的问题。根据《钢结构与钢-混凝土组合结构设计方法》,详细介绍了精细化延性抗震设计理论,影响结构性能系数R取值的各种因素,结构延性系数与构件宽厚比的关系。介绍了采用《钢结构设计标准》(GB 50017—2017)进行抗震性能化设计的流程,及性能系数最小值的确定依据。最后对我国《钢结构设计标准》(GB 50017—2017)在抗震性能化设计流程、性能系数的取值、构件宽厚比限值等方面提出了建议。
关键词:钢结构;延性抗震设计;性能化设计;性能系数;二阶效应;宽厚比
作者简介:周佳,硕士,高级工程师,一级注册结构工程师,主要从事钢结构、组合结构和复杂结构的设计研究,Email:83294306@qq.com。
基金:中国建筑西南设计研究院有限公司重点课题(R-2021-08-S-A-2023);浙江省建设科研项目(2021K091)。
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Understanding and application of design method for steel and steel-concrete combined structures: seismic performance-based design of steel structures
ZHOU Jia TONG Genshu LI Changhong LIU Yifeng ZHANG Lei FU Bo
(China Southwest Architectural Design & Research Institute Co.,Ltd. Institute of High-Performace Structures, Zhejiang University Hangzhou TONGMSK Architectural Structure Design Office Co., Ltd.)
Abstract: The goal of structural seismic design is not broken in small earthquakes, repairable in medium earthquakes, and not collapsing in large earthquakes. The structure enters the elasto-plastic stage under the medium earthquake, how to obtain the seismic force of the elasto-plastic stage structure is an urgent problem that needs to be solved. According to the design method for steel and steel-concrete combined structures, the refined theory for ductile ductility-based seismic design of structures, the various factors affecting the R-value of the structural coefficient of performance, and the relationship between structural ductility coefficient and member width-to-thickness ratio were introduced in detail. The seismic performance-based design process using the steel structure design standard(GB 50017—2017)and the basis for determining the minimum value of the performance coefficient were described. Finally, suggestions were made for China's steel structure design standard(GB 50017—2017)in terms of seismic performance-based design process, value of performance coefficient, and limits of member width-thickness ratio.
Keywords: steel structure; ductility-based seismic design; performance-based design; coefficient of performance; second-order effect; width-thickness ratio
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