Experimental Study on Bearing Behavior of Prestressed Steel Reinforced Concrete Simply Supported Beam under Fire and Vertical Load

傅传国; 王玉镯; 于德帅; 韩建

doi:10.13409/j.cnki.jdpme.2012.01.002

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Experimental Study on Bearing Behavior of Prestressed Steel Reinforced Concrete Simply Supported Beam under Fire and Vertical Load

更新时间：2025-12-11

- Experimental Study on Bearing Behavior of Prestressed Steel Reinforced Concrete Simply Supported Beam under Fire and Vertical Load
- Vol. 32, Issue 1, Pages: 1-7(2012)
- 作者机构：
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- DOI：10.13409/j.cnki.jdpme.2012.01.002
  CLC： U398.9
- Published：2012
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[1]傅传国,王玉镯,于德帅,韩建.火灾作用下预应力型钢混凝土简支梁承载性能试验研究[J].防灾减灾工程学报,2012,32(01):1-7.

傅传国, 王玉镯, 于德帅, et al. Experimental Study on Bearing Behavior of Prestressed Steel Reinforced Concrete Simply Supported Beam under Fire and Vertical Load[J]. 2012, 32(1): 1-7.
[1]傅传国,王玉镯,于德帅,韩建.火灾作用下预应力型钢混凝土简支梁承载性能试验研究[J].防灾减灾工程学报,2012,32(01):1-7. DOI： 10.13409/j.cnki.jdpme.2012.01.002.

傅传国, 王玉镯, 于德帅, et al. Experimental Study on Bearing Behavior of Prestressed Steel Reinforced Concrete Simply Supported Beam under Fire and Vertical Load[J]. 2012, 32(1): 1-7. DOI： 10.13409/j.cnki.jdpme.2012.01.002.

摘要

进行了两根足尺预应力型钢混凝土简支梁在火灾高温和竖向恒定加载耦合作用下的耐火性能试验

分析了试验梁的温度场分布规律、竖向变形特点和承载性能劣化过程。通过在试验梁端部预设压力传感器

实测了升温过程中梁端部预压力与升温时间的关系曲线。试验结果表明

预压力对火灾高温作用较为敏感

当标准升温100 min时预压力已降至初始预压力的一半

试验中一根梁出现了侧向弯曲变形。因此

对于预应力混凝土结构

火灾高温作用下应考虑构件可能的侧向变形影响。

Abstract

Fire resistance of two full-scale PSRC simply supported beams was tested under high temperature and vertical load.The distribution of temperature field

vertical deformation characteristics and bearing performance deterioration process were obtained in the experiment

and the relationship between prepressure caused by prestressed bar and heating time was measured during the heating process by setting a pressure sensor at the beam end.The result shows that pre-pressure caused by prestressed bar is sensitive to high temperature

and it is reduced to half of its initial value after 100 minutes in ISO834 standard fire. At the end of the test

lateral bending deformation appeares in specimen F-PSRCB13.

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references

1860级低松弛钢绞线高温下力学性能 [J]. 张昊宇,郑文忠. 哈尔滨工业大学学报 . 2007(06)

预应力型钢混凝土简支梁受弯性能试验研究 [J]. 傅传国,李玉莹,梁书亭. 建筑结构学报 . 2007(03)

结构抗火研究进展与趋势 [J]. 李国强,吴波,韩林海. 建筑钢结构进展 . 2006(01)

火灾下预应力混凝土结构极限承载力计算方法 [J]. 熊学玉,蔡跃,黄鼎业. 自然灾害学报 . 2005(02)

预应力型钢混凝土结构试验研究及工程应用[M]. 科学出版社 , 傅传国, 2007

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