| 石灰膏抹面木梁受火后受力性能静力试验研究 |
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| 引用本文： | 许清风,李向民,穆保岗,张晋,徐明,李帅希.石灰膏抹面木梁受火后受力性能静力试验研究[J].建筑结构学报,2011,32(7):73-79. |
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| 作者姓名： | 许清风 李向民 穆保岗 张晋 徐明 李帅希 |
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| 作者单位： | 1.上海市工程结构新技术重点实验室， 上海 200032； 2.上海市建筑科学研究院， 上海 200032；3.东南大学 土木工程学院， 江苏南京 210096 |
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| 基金项目： | 上海市科委青年科技启明星计划(07QB14031);上海市科委青年科技启明星跟踪计划(11QH1402100); 国家“十一五”科技支撑计划(2006BAJ03A10-02) |
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| 摘 要： | 木梁受火后由于炭化作用将使其有效截面减少、承载能力降低.通过2组11根木梁三面受火后力学性能的对比试验研究,分析了石灰膏抹面对木梁火灾性能影响.研究结果表明:对比木梁、三面受火无石灰膏抹面木梁和三面受火有石灰膏抹面木梁的破坏形态基本相似;三面受火30min的石灰膏抹面木梁由于含水率降低且木材未遭受炭化损伤,其承载力反而...
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| 关 键 词： | 木梁 石灰膏抹面 受火试验 静力试验 力学性能 炭化速度 |
Static experimental research on mechanical behavior of timber beams with lime putty finishing after fire |
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| XU Qingfeng,LI Xiangmin,MU Baogang,ZHANG Jin,XU Ming,LI Shuaixi.Static experimental research on mechanical behavior of timber beams with lime putty finishing after fire[J].Journal of Building Structures,2011,32(7):73-79. |
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| Authors: | XU Qingfeng LI Xiangmin MU Baogang ZHANG Jin XU Ming LI Shuaixi |
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| Affiliation: | 1.Shanghai Key Laboratory of New Technology Research on Engineering Structure, Shanghai 200032, China;2.Shanghai Research Institute of Building Sciences, Shanghai 200032, China;3.College of Civil Engineering, Southeast University, Nanjing 210096, China |
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| Abstract: | The effective cross-sectional area and the bearing capacity of timber beams exposed to fire will drop because of the charring of wood.To learn the benefit of lime putty finishing to fire performance,two groups of 11 timber beams were experimentally studied.It is found that the failure modes of the control specimen,the timber beams exposed to 3-side fire and the timber beams with lime putty finishing exposed to 3-side fire are almost the same.The bearing capacity of timber beams with lime putty finishing exp... |
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| Keywords: | timber beam lime putty finishing fire test static test mechanical behavior charring rate |
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