面向建筑韧性目标的减隔震设计研究与实践  

Research on seismic isolation design strategy for building seismic resilience target

作　　者：滕振超[1] 张家浩 霍静轶 黄漪澜 计静[1] Teng Zhen-chao;Zhang Jia-hao;Huo Jing-yi;Huang Yi-lan;Ji Jing(School of Civil Engineering,Northeast Petroleum University,Daqing 163318,China)

机构地区：[1]东北石油大学土木建筑工程学院,黑龙江大庆163318

出　　处：《工程抗震与加固改造》2024年第4期85-94,共10页Earthquake Resistant Engineering and Retrofitting

基　　金：黑龙江省自然科学基金联合引导项目(LH2020E018);黑龙江省高等教育教学改革一般项目(SJGY20210137)。

摘　　要：为培养土木工程类学生防灾减灾设计能力,本文以《基于保持建筑正常使用功能的抗震技术导则》(以下简称《导则》)为核心内容,提出建筑物在遭受设防地震时满足正常使用要求,并根据使用功能及损坏后果提出Ⅰ、Ⅱ类建筑性能目标。以预期抗震韧性目标为导向,提出一种面向两区八类建筑的“三水准设防、两阶段设计”策略,以实现《导则》对Ⅰ、Ⅱ类建筑进行减隔震设计时正常使用要求,提高震后建筑维持和恢复使用功能的能力。选取某医技楼和学校作为Ⅰ类和Ⅱ类建筑的典型算例,以震后修复费用、修复时间和人员伤亡指标提出预期韧性目标,并对其按照韧性设防策略进行隔震与减震设计。基于弹塑性时程分析结果采用SAUSG-RES提取工程需求参数进行韧性等级评定。结果表明,两区八类建筑采用韧性设防策略后,结构在遭受设防地震时满足正常使用要求,经过简单修复后可恢复使用功能,达到韧性一星等级;在遭受罕遇地震后经过适度修复可恢复使用功能,达到高韧性等级。韧性设防策略不仅完善了传统抗震设防的不足,而且衔接《导则》要求与工程设计习惯,为抗震设计课程高阶性改革提供了参考思路。In order to cultivate the ability of disaster prevention and mitigation design of civil engineering students,this paper takes Technical guideline for maintaining normal functionality of buildings in earthquakes as the core content,and puts forward that buildings meet the normal function requirements when subjected to fortification earthquakes.According to the normal function and damage consequences,the performance objectives of class I and II buildings are proposed.Guided by the expected seismic resilience goal,a " three-level fortification and two-stage design " strategy for eight types of buildings in two districts is proposed to realize the normal function requirements of the seismic isolation design of Class I and II buildings,and to improve the ability of buildings to maintain and restore their functions after the earthquake.A medical technology building and a school are selected as typical examples of Class I and Class II buildings.The expected resilience target is proposed based on the post-earthquake repair cost,repair time and casualties,and the isolation and shock absorption design is carried out according to the resilience fortification strategy.Based on the results of elastic-plastic time history analysis,SAUSG-RES was used to extract engineering demand parameters for toughness grade evaluation.The results show that the structures meet the normal function requirements when subjected to the fortification earthquake after adopting the resilient fortification strategy for eight types of buildings in the two areas.After simple repair,the function can be restored to the level of resilience one star.After moderate repair when suffering a rare earthquake,it can be restored to function and reach a high toughness level.The resilient fortification strategy not only improves the shortcomings of traditional seismic fortification,but also meets engineering design habits,which provides a reference for the higher-order reform of seismic design courses.

关 键 词：韧性设防策略 隔震技术 减震技术 韧性等级评价 弹塑性时程分析 

分 类 号：TU318[建筑科学—结构工程]