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介绍两块足尺大型四边固支钢筋混凝土双向板火灾试验的设计及其在异常狭小空间下的安装。首先,阐述材料选用、保护层厚度的确定、试件尺寸的确定,在不同荷载工况下板的截面内力计算与配筋,用ANSYS对四点支承带悬臂板的内力进行分析;其次,重点阐述大型试件在异常狭窄空间和桥式吊车吨位严重不足情况下的详细吊装过程;最后,介绍板四边固支条件的实现方法。结果表明:在设计试件时应考虑不同荷载工况;ANSYS计算结果显示,四点支承带悬臂板的内力主要集中在四个支点及其连线上;大型试件的设计应综合考虑场地空间和设备的吊装能力,在地面平面不足时可考虑先通过竖向的抬升,利用其抬升处高度较大的平面进行安装。
This paper introduces the design of two large-scale fire test of two-way slab supported by a large-scale reinforced concrete with four sides and its installation under abnormally small space. Firstly, the selection of materials, the determination of the thickness of the protective layer, the determination of the size of the test piece, the calculation of the internal force and the reinforcement of the plate under different load conditions, and the analysis of the internal force of the cantilever plate of the four-point support belt by ANSYS; Elaborated the large specimen in a very narrow space and a serious shortage of overhead crane tonnage hoisting process under the circumstances; The results show that different loading conditions should be considered when designing the specimen. The calculation results of ANSYS show that the internal forces of the four-point support cantilever plate are mainly concentrated on the four fulcrums and their connection lines. The design of the large specimen should consider the space of the site And equipment lifting capacity, in the case of inadequate ground plane can be considered through the vertical elevation, the use of its elevation of a larger plane to install.