共查询到18条相似文献，搜索用时 437 毫秒
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汶川地震震中某钢筋混凝土框架结构的非线性地震反应分析 总被引：2，自引：1，他引：1
2008年5月12日,四川省汶川县发生了里氏8.0级地震,造成了巨大的人员伤亡以及工程结构震害。位于震中映秀镇的漩口中学教学综合楼是按照《建筑抗震设计规范(GB50011-2001)》进行设计的,按7度进行抗震设防。在此次地震中,该建筑破坏严重,工程震害典型。为此,本文考虑了钢筋混凝土与砌体的材料非线性性质,建立了框架填充墙结构的非线性分析模型,进行了非线性有限元时程分析,分析了结构破坏的原因,讨论了填充墙体对结构抗震性能的影响,为该类结构的抗震设计提供了一定的依据。 相似文献
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我国7度设防等跨RC框架抗地震倒塌能力研究 总被引：1，自引：0，他引：1
我国建筑结构抗震设计主要采用基于小震下的构件承载力计算保证结构的抗震承载能力,配合抗震构造措施保证结构的变形能力,缺乏大震抗倒塌定量计算.而实际地震震害表明,即使是同类结构,其结构体系参数对其抗地震倒塌能力也有很大影响.为此,本文依据《建筑抗震设计规范》GB50011 - 2001,按照7度抗震设防设计了24个不同跨度... 相似文献
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《建设工程抗震管理条例》要求两区八类建筑需采用减隔震技术,并保证设防地震时能够满足正常使用要求。目前针对减震结构满足正常使用功能的设计方法尚未达成共识。RISN-TG 046—2023《基于保持建筑正常使用功能的抗震技术导则》等新编标准针对减震结构提出了系统的基于性能的设计要求。基于一个8层RC框架采用黏滞阻尼器的减震结构案例,按照该标准及其他现行标准的不同要求进行了减震设计,对比了不同设计方案的土建成本及地震响应,并对减震结构的剪力、位移角和构件损伤进行了讨论,结果表明,在进行减震结构设计时,建议按照RISN-TG 046—2023《基于保持建筑正常使用功能的抗震技术导则》要求控制设防地震下的层间位移角,可按照DGJ 08-9—2013《建筑抗震设计规程》或JGJ 3—2010《高层建筑混凝土结构技术规程》或GB 50011—2010《建筑抗震设计规范》)控制承载力,为减震结构保持设防地震下正常使用功能的设计提供参考。 相似文献
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汶川地震中都江堰市的房屋震害 总被引：27，自引：5，他引：22
张敏政 《地震工程与工程振动》2008,28(3):1-6
对汶川地震中都江堰市1 005栋房屋的现场震害调查资料进行了统计分析。分析表明,经抗震设计的房屋的震害明显低于未经抗震设计的房屋,前者实现了预期的抗震设防目标;在经抗震设计房屋中,钢筋混凝土框架结构房屋的震害相对较轻,底框架砌体结构房屋和砌体结构房屋次之;中高层建筑和低层建筑的震害比多层建筑轻;学校、医院等公用建筑的损坏与住宅建筑相比较重。 相似文献
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《地震工程与工程振动》2016,(1)
《建筑抗震设计规范》是确保全国地震区各类建筑具有合理抗震可靠度的关键性技术文件。本文结合工程抗震设计经验,对多遇地震结构承载力验算、抗震设防烈度地震作用、抗震性态设计、乙类建筑抗震设防标准、竖向地震作用进行探讨。指出:建筑的抗震设防目标是地震基本烈度,应采用基本烈度地震作用进行结构承载力和变形的抗震验算。建筑抗震性能化设计应按设防分类控制建筑震害、分类规定设计地震加速度、抗震构造措施不能降低。乙类建筑抗震承载力应适当增强。竖向地震作用应按设防烈度确定。 相似文献
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INTRODUCTIONFromTJ1 1 74 ,theseismicdesignforbuildingshasbeenbasedontheaccelerationresponsespectruminChina (HuYuxian ,1 988) .ThevalueofTgoftheresponsespectrumvariesbecauseofdifferentsiteclassesanddifferentearthquakeenvironments .Designresponsespectrainc… 相似文献
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场地相关设计反应谱特征周期的统计分析 总被引：12，自引：0，他引：12
利用近年来的工程场地地震安全性评价和地震小区划工作的成果，对上述工作中得到的场地相关反应谱的特征周期取值进行统计分析，并收集现有的强震记录计算其反应谱，将上述两个结果同两个版本的抗震设计规范(GBJ11-89和GB50011-2001)中的规定进行比较。发现上述两本规范中的特征周期取值在不同程度上小于实际场地情况的统计平均值。其中，虽然GB50011-2001规范相对于GBJ11-89规范更加接近实际场地的情况，但仍然在一些情况下取值偏小。 相似文献
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Revision of seismic design codes corresponding to building damagesin the “5.12” Wenchuan earthquake 总被引：1，自引：1，他引：0
Yayong Wang 《地震工程与工程振动(英文版)》2010,9(2):147-155
A large number of buildings were seriously damaged or collapsed in the "5.12" Wenchuan earthquake. Based on field surveys and studies of damage to different types of buildings, seismic design codes have been updated. This paper briefly summarizes some of the major revisions that have been incorporated into the "Standard for classification of seismic protection of building constructions GB50223-2008" and "Code for Seismic Design of Buildings GB50011-2001." The definition of seismic fortification class for buildings has been revisited, and as a result, the seismic classifications for schools, hospitals and other buildings that hold large populations such as evacuation shelters and information centers have been upgraded in the GB50223-2008 Code. The main aspects of the revised GB50011-2001 code include: (a) modification of the seismic intensity specified for the Provinces of Sichuan, Shanxi and Gansu; (b) basic conceptual design for retaining walls and building foundations in mountainous areas; (c) regularity of building configuration; (d) integration of masonry structures and precast RC floors; (e) requirements for calculating and detailing stair shafts; and (f) limiting the use of single-bay RC frame structures. Some significant examples of damage in the epicenter areas are provided as a reference in the discussion on the consequences of collapse, the importance of duplicate structural systems, and the integration of RC and masonry structures. 相似文献
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本文回顾了地震反应分析理论发展的三个阶段,指出反应谱理论仍然是许多国家现阶段抗震设计的理论依据,我国规范也主要采用反应谱法进行抗震设计分析。进一步讨论了反应谱与抗震设计反应谱的联系和区别。把我国《建筑抗震设计规范(GB50011—2001)》中有关地震影响系数分别与ISO 3010:2001(E)和美国的建筑抗震设计规范中的地震影响系数做了对比,发现我国规范有些地方考虑得还不够全面,还需要不断地完善。提出在抗震设计中运用地震动参数代替地震烈度来进行计算能更好地反映工程实际情况。 相似文献
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Wang Yayong 《地震工程与工程振动(英文版)》2008,7(3):255-262
Many different types of buildings were severely damaged or collapsed during the May 12, 2008 Great Wenchuan Earthquake. Based on survey data collected in regions that were subjected to moderate to severe earthquake intensities, a comparison between the observed building damage, and the three earthquake performance objectives and seismic conceptual design principles specified by the national ＂Code for Seismic Design of Buildings GB50011-2001,＂ was carried out. Actual damage and predicted damage for a given earthquake level for different types of structures is compared. Discussions on seismic conceptual design principles, with respect to multiple defense lines, strong column-weak beam, link beam of shear walls, ductility detailing of masonry structures, exits and staircases, and nonstructural elements, etc. are carried out. Suggestions for improving the seismic design of structures are also proposed. It is concluded that the seismic performance objectives for three earthquake levels, i.e., ＂no failure under minor earthquake level, ＂＂repairable damage under moderate earthquake level＂ and ＂no collapse under major earthquake level＂ can be achieved if seismic design principles are carried out by strictly following the code requirements and ensuring construction quality. 相似文献
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This study examines the design provisions of the Chinese GB 50011-2010 code for seismic design of buildings for the special boundary elements of T-shaped reinforced concrete walls and proposes an improved design method. Comparison of the design provisions of the GB 50011-2010 code and those of the American code ACI 318-14 indicates a possible deficiency in the T-shaped wall design provisions in GB 50011-2010. A case study of a typical T-shaped wall designed in accordance with GB 50011-2010 also indicates the insufficient extent of the boundary element at the non-flange end and overly conservative design of the flange end boundary element. Improved designs for special boundary elements of T-shaped walls are developed using a displacement-based method. The proposed design formulas produce a longer boundary element at the non-flange end and a shorter boundary element at the flange end, relative to those of the GB 50011-2010 provisions. Extensive numerical analysis indicates that T-shaped walls designed using the proposed formulas develop inelastic drift of 0.01 for both cases of the flange in compression and in tension. 相似文献
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通过对CECS160与GB50011-2001以及IBC-2003等规范的初步对比分析，就CECS160中有关基于性态设计的抗震设防概念、地震动参数取值以及抗震建筑分类等内容进行了讨论，并对CECS160在抗震设计中的具体实施提出一些看法。 相似文献