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首页> 外文会议>International conference on sustainable development of critical infrastructure 2014 >Progressive Collapse Resistance of Braced Steel Frames Exposed to Fire
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Progressive Collapse Resistance of Braced Steel Frames Exposed to Fire

机译：着火的支撑钢框架的渐进抗倒塌性

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OpenSees is an open-source object-oriented software framework developed at UC Berekeley. The OpenSees framework has been recently extended to deal with structural behaviour under fire conditions. This paper summaries the key work done for this extension and focuses on the application of the developed OpenSees to study the influence of fire scenarios and bracing system on the resistance of steel frames against fire-induced progressive collapse. Single and multi-compartment fire scenarios are applied. Additional horizontal and vertical restraints are applied to the frame to simulate the braced steel frame. A parametric study is carried out to find the fire-induced progressive collapse mechanisms of steel frames under various fire scenarios and restraining conditions. The collapse mode of frames is in the form of lateral drift and downward collapse of frames. It is proved that these two collapse nodes can be resisted by applying lateral and vertical restraint on the frame, respectively. The combination of two restraints has a better resistance effect.
机译：OpenSees是由UC Berekeley开发的一种开源的面向对象的软件框架。 OpenSees框架最近已扩展为处理火灾条件下的结构行为。本文总结了为此扩展所做的关键工作，并将重点放在已开发的OpenSees的应用上，以研究火灾场景和支撑系统对钢框架抵抗火灾引起的渐进倒塌的抵抗力。应用了单室和多室火灾方案。将附加的水平和垂直约束应用于框架，以模拟支撑的钢框架。进行了参数研究，以发现在各种火灾场景和约束条件下火灾引起的钢框架渐进倒塌机制。框架的塌陷模式为侧向漂移和框架向下塌陷的形式。事实证明，通过分别在框架上施加横向约束和纵向约束，可以抵抗这两个坍塌节点。两种约束的结合具有更好的抵抗效果。

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