Experimental behaviour of reinforced concrete (RC) beam to concrete-filled steel tubular (CFST) column frames subjected to ISO-834 standard fire
Experimental behaviour of reinforced concrete (RC) beam to concrete-filled steel tubular (CFST) column frames subjected to ISO-834 standard fire
复制标题
钢筋混凝土 (RC) 梁与钢管混凝土 (CFST) 柱框架在 ISO-834 标准火灾下的实验行为
DOI：
10.1016/j.engstruct.2010.06.001
复制
发表时间：
2010-10
影响因子：
5.5
通讯作者：
Yu, Hong-Xia
中科院分区：
文献类型：
--
作者：
Han, Lin-Hai;Wang, Wei-Hua;Yu, Hong-Xia
本文介绍了6个钢筋混凝土梁-钢管混凝土柱平面框架在ISO-834标准火灾作用下的试验情况。每个框架由两根钢管混凝土柱和一根带RC板的RC梁组成。这些试验旨在再现中国高层和地铁建设中常用的多层组合建筑中钢管混凝土柱和RC梁的情况。其中四个框架试件的柱子使用圆形钢管，其余两个试件使用方管。其他试验参数包括钢管混凝土柱的轴向荷载水平、钢筋混凝土梁的荷载水平和梁柱的线性转动约束比。在试验过程中，测量了组合柱截面、梁截面和节点区域的温度分布。通过对试件的变形和破坏的分析，找出了框架内钢管混凝土柱和钢筋混凝土梁构件受火性能的差异，并提出了平面框架的破坏机理。讨论了不同试验参数对平面框架极限温度的影响。
This paper describes six tests carried out on reinforced concrete (RC) beam to concrete-filled steel tubular (CFST) column planar frames subjected to ISO-834 standard fire. Each frame consists of two CFST columns and an RC beam with RC slab. These tests were meant to reproduce the conditions of the CFST columns and RC beams in multi-storey composite buildings commonly used in Chinese high-rise and subway constructions. The columns in four of the framed specimens used circular steel tubes while the remaining two used square tubes. Other test parameters include the level of axial load in the CFST column, the load level in the RC beam and the beam-to-column linear rotational restraint ratio. Temperature distributions on the composite column sections, beam sections and in the joint zones were measured during the tests. By analysis of the deformations and failures of the test specimens, differences between the fire behaviour of the CFST columns and RC beam members being in a frame and being isolated members are identified and failure mechanisms for the planar frames are proposed. The influences of different testing parameters on the limiting temperature of the planar frames are also discussed.
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