Influence of Local High Temperature on Pushover Analysis of Structures
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摘要: 为研究火灾局部高温对高层建筑结构Pushover分析的影响,以钢-混凝土混合结构为研究对象,将侧向荷载以均匀分布的形式考虑,采用ABAQUS有限元软件建立数值模型,进行结构弹塑性响应分析,同时对比不同温度作用对分析结果的影响。研究结果表明:随着局部高温作用温度的升高,结构顶点位移和层间位移相对误差呈现逐渐增大的趋势,局部高温对结构Pushover分析结果有显著影响。研究结果为降低局部高温和侧向荷载同时作用给结构带来的破坏提供了参考。
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关键词:
- Pushover分析 /
- 高温 /
- 顶点位移 /
- 层间位移
Abstract: In order to study the influence of fire local high temperature on the Pushover analysis of high-rise building structures, the steel-concrete composite structure was taken as the research object, the lateral load was considered in the form of uniform distribution, and the numerical model was established by using ABAQUS finite element software to analyze the structural elastic-plastic response and compare the effects of different temperature effects on the analysis results. The results showed that with the increase of the local high temperature, the relative errors of the top displacement and interlayer displacement of the structure were gradually increasing, and the local high temperature had a significant effect on the Pushover analysis results of the structure. The research results could provide a reference for reducing the damage to the structure caused by the simultaneous action of local high temperature and lateral load.-
Key words:
- Pushover analysis /
- high temperature /
- top displacement /
- interlayer displacement
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[1] 钟江荣. 城市地震次生火灾研究[D]. 哈尔滨:中国地震局工程力学研究所, 2010. [2] 刘桂平. 高层钢-混凝土混合结构的经历弹塑性Pushover分析及应用[D]. 长沙:中南大学, 2008. [3] 钱稼茹, 罗文斌. 静力弹塑性分析:基于性能/位移抗震设计的分析工具[J]. 建筑结构, 2000(6):23-26. [4] 汪大绥, 贺军利, 张凤新. 静力弹塑性分析(Pushover Analysis)的基本原理和计算实例[J]. 世界地震工程, 2004,20(1):45-53. [5] LAWSON R S, VANCE V, KRAWINKLER H. Nonlinear static pushover analysis-why, when and how?[C]//Proc 5th US Conf. Earthq. Enggn. Vol Ⅰ. Chicago:1994. [6] MOGHADAM A S,TSO W K. Damage assessment of eccentric multistory building using 3-D pushover analysis[C]//11th World Conference on Earthquake Engineering. Mexico:1996. [7] 欧进萍, 侯钢领, 吴斌. 概率Pushover分析方法及其在结构体系抗震可靠度评估中的应用[J]. 建筑结构学报, 2001(6):81-86. [8] 缪志伟, 马千里, 叶列平, 等. Pushover方法的准确性和适用性研究[J]. 工程抗震与加固改造, 2008(1):55-59. [9] 刘晶波, 刘祥庆, 李彬. 地下结构抗震分析与设计的Pushover分析方法[J]. 土木工程学报, 2008,41(4):73-80. [10] 梁建文, 徐晓慧, 周德玲, 等. 天津市某商业大厦超限高层建筑静力弹塑性分析[J]. 工业建筑, 2016,46(12):184-190. [11] 李国强, 韩林海, 楼国彪, 等. 钢结构及钢-混凝土组合结构抗火设计[M]. 北京:中国建筑工业出版社, 2006. [12] 李国强, 吴波, 韩林海. 结构抗火研究进展与趋势[J]. 建筑钢结构进展, 2006,8(1):1-13. [13] 陆铁坚, 刘桂平, 余志武. 侧向荷载分布方式对混合结构Pushover分析结果的影响[J]. 铁道科学与工程学报, 2009,6(6):1-6. [14] 侯爽, 欧进萍. 结构Pushover分析的侧向力分布及高阶振型影响[J]. 地震工程与工程振动, 2004(3):89-97. [15] ECCS. European recommendations for the fire safety of steel structure[S]. Amsterdam:Elsevier Scientific Publishing Company,2002. [16] ESC. Eurocode 3, design of steel structures, part 1.2:structural fire design[S]. Brussels:European Committee for Standardization,1993. [17] ANDERBERG Y. Modeling steel behavior[J]. Fire Safety Journal, 1998,13:17-26. [18] PURKISS J A. Developments in the fire safety design of structural steelwork[J]. Journal of Constructional Steel Research, 1988,11(1/2/3):149-173. [19] RUBERT A, SCHAUMANN P. Critical temperatures of steel columns exposed to fire[J]. Fire Safety Journal, 1988,13:39-44. [20] FURUMURA F, AVE T, OKABE T, et al. An uniaxial stress-strain formula of structural ateel at high tempurature and its applicaton to thermal deformation analysis of steel frames[J]. Trans of Arch. Inst. of Japan, 1986,363:110-117. [21] 赵金城, 沈祖炎. 局部火灾下钢框架结构整体性能的非线性分析[J]. 建筑结构学报, 1997,18(4):30-36.
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