基于性能的钢结构抗震设计方法探讨及其改进研究

张谨; 王立军; 杨律磊; 龚敏锋

doi:10.13206/j.gjgS22121903

基于性能的钢结构抗震设计方法探讨及其改进研究

doi: 10.13206/j.gjgS22121903

1. 东南大学土木工程学院, 南京 210096;
2. 中衡设计集团股份有限公司, 江苏苏州 215123;
3. 华诚博远工程技术集团有限公司, 北京 100052

详细信息

作者简介:
张谨,女,1970年出生,博士研究生,研究员级高级工程师。Email:230198995@seu.edu.cn

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出版历程
- 收稿日期: 2022-12-19
- 刊出日期: 2023-01-25

Discussion and Improvement Research on Performance-Based Seismic Design Method for Steel Structures

1. School of Civil Engineering, Southeast University, Nanjing 210096, China;
2. ARTS Group Co., Ltd., Suzhou 215123, China;
3. Huachengboyuan Engineering Technology Group Co., Beijing 100052, China

摘要

摘要: 国内现有基于GB 50011—2010《建筑抗震设计规范》的抗震设计方法(简称传统规范设计法)未考虑不同结构体系的延性差异,无法有效体现钢结构良好的抗震延性,且考虑到传统规范设计法难以实现快速更新以顺应新体系、新技术的发展应用,因此发展基于性能的抗震设计方法势在必行。对国内现有主要规范标准中涉及的性能化设计方法进行了对比总结,对其主要特点和应用中存在的问题进行了梳理,厘清性能化设计本质,同时参考当前国际先进的性能化设计思想,结合已有工程实践经验,对现有钢结构抗震性能化设计的改进方法进行了研究。从设计流程、性能目标设定、分析方法选择和评估标准等多方面进行了探讨,建议将性能化设计提升为与传统规范设计法并行的设计方法,从而减免规范中包括规则性要求等限制。改进方法相对现有传统规范设计法具有更高的灵活性,可应用于包括超限结构在内的各类高延性或新体系结构中。该方法的思路与理念可拓展应用于包括抗风、防火、防腐和舒适度等结构专项分析,将日渐成熟的数值仿真计算作为各类性能设计与评价的重要手段和依据,以进一步形成和完善钢结构全生命周期的性能化设计框架和流程,充分发挥钢结构的良好性能,为促进钢结构在多领域应用和发展带来积极影响。
- 钢结构 /
- 性能化设计 /
- 弹塑性分析 /
- 性能评价 /
- 全生命周期
Abstract: The current seismic design method in China based on Code for Seismic Design of Buildings(GB 50011-2010), referred to as the prescriptive design method, inadequately considers the variations in ductility among different structural systems, impeding the recognition of the superior anti-seismic ductility of steel structures. Moreover, with the challenges in promptly updating codes to align with the development and application of new materials and technologies, it is essential to develop performance-based seismic design(PBSD) methods. This paper provides a comprehensive comparative analysis of the PBSD methods outlined in domestic codes, as well as the issues associated with their implementation. Drawing on international advanced PBSD concepts and existing engineering experience, an improved PBSD method for steel structures is proposed. The proposed method comprehensively addresses the design process, establishment of performance objectives, analysis methods, and performance evaluation, offering a robust framework for the seismic design of steel structures. It presents an alternative to the traditional prescriptive design method and provides increased flexibility, allowing for its application to various high ductility structures and new structural systems. This method can be also extended to other types of structural analysis such as those involving, wind, fire, corrosion and comfort. To further enhance the performance design process of steel structures throughout their full life cycle, numerical simulation calculations are recommended as a fundamental tool for various performance designs. While the proposed method shows promise in enabling positive outcomes for steel structures and promoting their application and development.
- steel structure /
- performance-based seismic design /
- elastoplastic analysis /
- performance evaluation /
- full life cycle

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