建筑结构一致风险抗震设计理论研究进展OA北大核心CSTPCD
Research progress of uniform-risk seismic design theory of building structures
从一致危险向一致风险的范式转换,已成为各国地震区划和抗震设计方法的主要发展趋势,但是我国的地震区划和抗震设计实践仍然属于一致危险的旧范式,不能充分考虑不同地区地震危险性的特征差异和建筑结构抗地震倒塌能力存在的不确定性,从而导致不同地区建筑结构地震倒塌风险的不一致性.2022年5月,我国发布《"十四五"国家防震减灾规划》,明确提出要提升地震灾害风险防治能力,包括摸清风险底数、强化抗震设防、增强城市韧性等要求,提出修订国家强制性标准GB 18306-2015《中国地震动参数区划图》,开展第六代地震灾害风险区划工作等.在此背景下,迫切需要开展风险导向地震动参数区划和建筑结构一致风险抗震设计理论的研究,从而为第六代地震动参数区划图的编制以及现行建筑抗震设计规范的修订提供决策依据.为此,从风险导向地震动参数、风险导向地震反应谱、一致风险抗震设计方法等方面,全面梳理和总结建筑结构一致风险抗震设计理论国内外的最新研究现状和发展趋势,并指出当前研究存在的主要问题和对策,以期为建筑结构一致风险抗震设计的研究提供概念性释疑和方向性导引.
The paradigm shift from uniform hazard to uniform risk has currently become a main trend of seismic ground motion parameter zonation and seismic design method in the world.However,the practice of seismic ground motion parameter zonation and seismic design method in China has still been in the old paradigm of uniform hazard.Since this paradigm cannot sufficiently consider the characteristic differences of seismic hazards in different regions,as well as the uncertainties of seismic collapse capacities of building structures,it will result in the non-consistency of seismic collapse risks in different regions.In May 2022,the'14th Five-year national plan for earthquake disaster prevention and mitigation'was issued by Chinese government,which clearly proposes to improve the ability to prevent and control earthquake disaster risks,such as finding out the bottom line of seismic risk,strengthening earthquake fortification,enhancing urban seismic resilience,etc.Furthermore,some key tasks are regulated,including revising the enforcing national standard of GB 18306-2015'Seismic ground motion parameters zonation map of China',and carrying out the sixth generation earthquake disaster risk zoning project.In this context,there is an urgent need to carry out research on risk-targeted ground motion parameter zoning and the uniform risk seismic design theory of building structures,so as to provide decision-making basis for the compilation of the sixth-generation seismic parameter zoning map and the revision of the current seismic design code of buildings.Therefore,the latest research status and development trend of the theory of uniform risk seismic design of building structures at home and abroad were comprehensively summarized from three aspects:risk-targeted ground motion,risk-targeted seismic response spectrum and uniform risk seismic design method,and the main problems existing in current research and corresponding countermeasures were pointed out.The aim of this paper is to provide conceptual interpretation and directional guidance for the study on uniform risk seismic design of building structures.
吕大刚;王丛;董尧;冯云幸
哈尔滨工业大学土木工程智能防灾减灾工业与信息化部重点实验室,黑龙江哈尔滨 150090哈尔滨工业大学土木工程智能防灾减灾工业与信息化部重点实验室,黑龙江哈尔滨 150090||山东建筑大学土木工程学院,山东济南 250101
土木建筑
一致风险风险导向地震动风险导向地震反应谱一致倒塌风险设计抗震性能设计抗震韧性设计
uniform riskrisk-targeted ground motionrisk-targeted seismic response spectrumuniform-collapse-risk designperformance-based seismic designresilience-based seismic design
《建筑结构学报》 2024 (010)
1-30 / 30
国家自然科学基金项目(52078176,51678209).
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