| 抗震设防烈度对钢框架连续性倒塌的影响 |
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| 引用本文： | 石磊,杜修力.抗震设防烈度对钢框架连续性倒塌的影响[J].震灾防御技术,2010,5(2):176-184. |
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| 作者姓名： | 石磊 杜修力 |
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| 作者单位： | 北京工业大学建工学院,北京,100124 |
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| 基金项目： | 国家自然科学基金重点项目(50638030):国家"十一.五"科技支撑项目 |
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| 摘 要： | 建筑结构在爆炸荷载作用下的连续倒塌问题近些年被很多学者所关注。从本质上讲,结构的抗倒塌和抗震都是动荷载作用下的结构响应问题,因此,结构抗震设计的很多理念对结构的抗连续倒塌设计同样适用。本文采用数值模拟的方法,分别对按抗震设防烈度Ⅵ度、Ⅶ度和Ⅷ度的钢框架结构进行了40kg炸药爆炸作用下的连续倒塌分析,探讨了抗震设防烈度对钢框架连续性倒塌的影响。计算结果表明,抗震设防烈度高的钢框架结构其抵抗连续倒塌的能力较强。其中,按Ⅵ度设防的结构发生了连续倒塌;按Ⅶ度设防的结构没有发生连续性倒塌,只发生了一定程度的变形和破坏;而相比之下,按Ⅷ度设防的结构变形和破坏最为轻微。
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| 关 键 词： | 设防烈度 钢框架 连续倒塌 数值模拟 |
| 收稿时间： | 2010/1/15 0:00:00 |
The Effect of Seismic Fortification Intensity on the Progressive Collapse of Steel-Frame Building |
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| Shi Lei and Du Xiuli.The Effect of Seismic Fortification Intensity on the Progressive Collapse of Steel-Frame Building[J].Technology for Earthquake Disaster Prevention,2010,5(2):176-184. |
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| Authors: | Shi Lei and Du Xiuli |
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| Institution: | Shi Lei and Du Xiuli(College of Architecture and Civil Engineering,Beijing University of Technology,Beijing 100022,China) |
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| Abstract: | The progressive collapse of buildings under explosion has attracted lots of attention from researchers in recent years.Structural collapse resistance and seismic resistance essentially belong to same issue of structural response under dynamic loading.Therefore,some theories in structural seismic design are also applicable to the design to resist progressive collapse.By applying numerical simulation,we have conducted a series of analysis on the progressive collapse under internal explosion of explosive charg... |
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| Keywords: | Seismic fortification intensity Steel-frame Progressive collapse Numerical simulation |
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