SMPM加固钢筋混凝土梁的耐火性能的数值模拟
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摘要
采用ABAQUS程序对用新型加固技术(高强钢绞线网片—聚合物砂浆复合面层)加固后的钢筋混凝土梁的耐火性能进行了数值模拟。通过分析这种新型聚合物砂浆的热物理特性,提出了热传导系数和比热容的计算公式。对钢绞线和钢筋的温度变化以及梁的跨中挠度与试验进行了比较,结果表明,ABAQUS程序能够很好地模拟钢筋混凝土构件的受火过程,可以充分考虑温度场和位移场的耦合。
Numerical simulation of fireproof behavior of RC beam strengthened by SMPM was carried out with ABAQUS procedure.Calculation formulas of conductivity coefficient and specific heat were put forward by analyzing the heat physical characteristics of the new polymer mortar.The temperature changing of stranded mesh and rebar was compared with experiment as well as the displacement of the beam's span centre.Results indicated that the ABAQUS procedure can perfectly simulate the fire exposure process of RC member and can sufficiently consider temperature and displacement coupling.
Numerical simulation of fireproof behavior of RC beam strengthened by SMPM was carried out with ABAQUS procedure.Calculation formulas of conductivity coefficient and specific heat were put forward by analyzing the heat physical characteristics of the new polymer mortar.The temperature changing of stranded mesh and rebar was compared with experiment as well as the displacement of the beam's span centre.Results indicated that the ABAQUS procedure can perfectly simulate the fire exposure process of RC member and can sufficiently consider temperature and displacement coupling.
引文
[1]岳茂光,姚秋来,王亚勇,等.SMPM与其它加固方法的比较及RC构件加固程序简介[J].工程抗震与加固改造,2007(已录用).
[2]姚秋来.高强钢绞线网片—聚合物砂浆复合面层加固技术研究概况[C].2006年中美地震工程年轻学者论坛,2006.
[3]姚秋来,王忠海,王亚勇,等.高强钢绞线网片-聚合物砂浆复合面层加固技术———新型“绿色”加固技术[J].工程质量,2005,(12):17-20.
[4]张立峰.高强钢绞线网—聚合物砂浆加固大偏心RC柱的研究[D].北京:北京科技大学,2007.
[5]王亚勇,姚秋来,王忠海,等.高强钢绞线网片—聚合物砂浆复合面层加固砖墙的试验研究[J].建筑结构,2005,35(8):36-40.
[6]聂建国,王寒冰,张天申,等.高强不锈钢绞线—渗透性聚合物砂浆抗弯加固的试验研究[J].建筑结构学报,2005,26(2):1-9.
[7]聂建国,蔡奇,张天申,等.高强不锈钢绞线—渗透性聚合物砂浆抗剪加固的试验研究[J].建筑结构学报,2005,26(2):10-17.
[8]王亚勇,姚秋来,王忠海,等.高强钢绞线网片—聚合物砂浆复合面层加固钢筋混凝土梁的耐火试验研究[J].建筑结构,2007,37(1):112-113.
[9]李国强,韩林海,楼国彪,等.钢结构及钢—混凝土组合结构抗火设计[M].北京:中国建筑工业出版社,2006:87-148
[10]European Committee for Standardization,ENV 1993-1-2,Euro-code 3,Design of Composite and Concrete Structures,Part 1.2;Structural Fire Design,1993.
[11]European Committee for Standardization,ENV 1994-1-2,Euro-code 4,Design of Composite and Concrete Structures,Part 1.2;Structural Fire Design,1994.
[12]British Standards Institution(BSI),BS 5950,the Structural Useof Steelwork in Buildings,Part8:Code of Practice of Fire Resist-ant Design,1990.
[13]Lie TTand DenhamE MA.Factors affecting the fire resistance ofcircular hollow steel columns filled with bar-reinforced concrete[R].NRC-CNRC Internal Report,1993,No.651.
[14]过镇海,李卫.混凝土耐热力学性能的实验研究总结[R].北京:清华大学土木工程系,1991:9-20.
[15]GB/T9978-1999建筑构件耐火试验方法[S].
[16]GB 50045-95高层民用建筑设计防火规范[S].
[2]姚秋来.高强钢绞线网片—聚合物砂浆复合面层加固技术研究概况[C].2006年中美地震工程年轻学者论坛,2006.
[3]姚秋来,王忠海,王亚勇,等.高强钢绞线网片-聚合物砂浆复合面层加固技术———新型“绿色”加固技术[J].工程质量,2005,(12):17-20.
[4]张立峰.高强钢绞线网—聚合物砂浆加固大偏心RC柱的研究[D].北京:北京科技大学,2007.
[5]王亚勇,姚秋来,王忠海,等.高强钢绞线网片—聚合物砂浆复合面层加固砖墙的试验研究[J].建筑结构,2005,35(8):36-40.
[6]聂建国,王寒冰,张天申,等.高强不锈钢绞线—渗透性聚合物砂浆抗弯加固的试验研究[J].建筑结构学报,2005,26(2):1-9.
[7]聂建国,蔡奇,张天申,等.高强不锈钢绞线—渗透性聚合物砂浆抗剪加固的试验研究[J].建筑结构学报,2005,26(2):10-17.
[8]王亚勇,姚秋来,王忠海,等.高强钢绞线网片—聚合物砂浆复合面层加固钢筋混凝土梁的耐火试验研究[J].建筑结构,2007,37(1):112-113.
[9]李国强,韩林海,楼国彪,等.钢结构及钢—混凝土组合结构抗火设计[M].北京:中国建筑工业出版社,2006:87-148
[10]European Committee for Standardization,ENV 1993-1-2,Euro-code 3,Design of Composite and Concrete Structures,Part 1.2;Structural Fire Design,1993.
[11]European Committee for Standardization,ENV 1994-1-2,Euro-code 4,Design of Composite and Concrete Structures,Part 1.2;Structural Fire Design,1994.
[12]British Standards Institution(BSI),BS 5950,the Structural Useof Steelwork in Buildings,Part8:Code of Practice of Fire Resist-ant Design,1990.
[13]Lie TTand DenhamE MA.Factors affecting the fire resistance ofcircular hollow steel columns filled with bar-reinforced concrete[R].NRC-CNRC Internal Report,1993,No.651.
[14]过镇海,李卫.混凝土耐热力学性能的实验研究总结[R].北京:清华大学土木工程系,1991:9-20.
[15]GB/T9978-1999建筑构件耐火试验方法[S].
[16]GB 50045-95高层民用建筑设计防火规范[S].
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