Fire-Resistance-Enhancement-Coefficient of Reinforced Concrete Simply-Supported Beams with Slab

唐贵和; 吴波

doi:10.13409/j.cnki.jdpme.2012.06.008

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Fire-Resistance-Enhancement-Coefficient of Reinforced Concrete Simply-Supported Beams with Slab

更新时间：2025-12-11

- Fire-Resistance-Enhancement-Coefficient of Reinforced Concrete Simply-Supported Beams with Slab
- Vol. 32, Issue 6, Pages: 693-699(2012)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：10.13409/j.cnki.jdpme.2012.06.008
  CLC： U375
- Published：2012
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[1]唐贵和,吴波.带板钢筋混凝土简支梁的耐火极限增大系数[J].防灾减灾工程学报,2012,32(06):693-699.

唐贵和, 吴波. Fire-Resistance-Enhancement-Coefficient of Reinforced Concrete Simply-Supported Beams with Slab[J]. 2012, 32(6): 693-699.
[1]唐贵和,吴波.带板钢筋混凝土简支梁的耐火极限增大系数[J].防灾减灾工程学报,2012,32(06):693-699. DOI： 10.13409/j.cnki.jdpme.2012.06.008.

唐贵和, 吴波. Fire-Resistance-Enhancement-Coefficient of Reinforced Concrete Simply-Supported Beams with Slab[J]. 2012, 32(6): 693-699. DOI： 10.13409/j.cnki.jdpme.2012.06.008.

摘要

利用SAFIR程序

对带板钢筋混凝土简支梁的耐火极限增大系数进行了分析。考察了梁的荷载比、配筋率、保护层厚度、跨高比

以及板的厚度、宽度、保护层厚度和配筋率等参数

对ISO834标准升温过程作用下带板简支梁的耐火极限增大系数的影响规律。通过1296种工况的计算分析

建立了该增大系数的实用计算公式。研究结果表明:①板的保护层厚度对该增大系数的影响较大

随着保护层厚度增加

该增大系数迅速增大;②板的厚度和纵筋配筋率对该增大系数的影响较小;③适当增加板的宽度可以提高该增大系数。

Abstract

Using the computer program of SAFIR

the influences of some parameters（i.e.

load ratio

reinforcement ratio

thickness of concrete cover and span-to-height ratio of RC beam

and height

width

thickness of concrete cover and reinforcement ratio of RC slab） on the fire-resistance-enhancement-coefficient（FREC） of RC simply-supported beams with slab exposed to ISO834 standard fire are analyzed.Based on the simulation results of 1296 cases

a practical calculation method for the FREC is proposed.Simulation results show that:（a） the thickness of concrete cover of slab affects the FREC significantly

and the FREC increases quickly with the increasing of the thickness of concrete cover;（b） the thickness and longitudinal reinforcement ratio of slab have little effect on the FREC;and（c） the FREC increases with the increasing of the width of slab to a certain extent.

关键词

Keywords

references

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