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预制混凝土夹心保温墙板热工性能试验研究与模拟分析
Experimental Study and Numerical Analysis of Thermal Performance of Prefabricated Concrete Sandwich InsulationWall Panels
2019年第9期
预制夹心墙板;热工性能;拉结件;模拟分析
Prefabricated concrete sandwich panels; Thermal performance; Connector; Numerical simulation
2019年第9期
10.19761/j.1000-4637.2019.09.079.05
国家“十三五”重点研发计划项目资助(2016YFC 0701402)。
徐桂明1,陈旭东2
1.常州工程职业技术学院,213164;2.江苏省建筑科学研究院有限公司,南京 210008

徐桂明1,陈旭东2

徐桂明,陈旭东.预制混凝土夹心保温墙板热工性能试验研究与模拟分析[J].混凝土与水泥制品,2019(9):79-83.

XU G M,CHEN X D.Experimental Study and Numerical Analysis of Thermal Performance of Prefabricated Concrete Sandwich Insulation Wall Panels[J].China Concrete and Cement Products,2019

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摘 要:对四块预制混凝土夹心墙板的热工性能进行了试验研究,通过改变拉结件的种类,探索其对墙板热工性能的影响,并采用有限元软件对其进行了模拟分析。结果表明:金属拉结件的热桥效应明显,与无拉结件的预制墙板相比,采用纤维拉结件的墙板的传热系数提高8%,而采用不同金属拉结件的墙板分别提高20.9%与14.3%;建议在实际工程应用中,对墙板的传热系数进行相应的放大,单位面积墙板的放大系数范围为0.71%~2.52%。 Abstract: The thermal performance of four prefabricated concrete sandwich wall panels were tested, the effects of the shear connectors on the thermal performance of the wall panels were explored by changing the types of connectors, and the simulation analysis of the performance of these wall panels was carried out by using the finite element software. The results show that the thermal bridge effect caused by shear connectors is obviously. Compared with the wall panel without connectors, the heat transfer coefficient of the wall panel with fiber connectors is increased by 8%, while the heat transfer coefficient of the wall panels with different metal connectors are increased by 20.9% and 14.3%, respectively. It is suggested that the relevant thermal performance parameters of the sandwich panels should be enlarged accordingly in practical engineering applications, and the amplification factor of per unit area should be taken from 0.71% to 2.25%.
英文名 : Experimental Study and Numerical Analysis of Thermal Performance of Prefabricated Concrete Sandwich InsulationWall Panels
刊期 : 2019年第9期
关键词 : 预制夹心墙板;热工性能;拉结件;模拟分析
Key words : Prefabricated concrete sandwich panels; Thermal performance; Connector; Numerical simulation
刊期 : 2019年第9期
DOI : 10.19761/j.1000-4637.2019.09.079.05
文章编号 :
基金项目 : 国家“十三五”重点研发计划项目资助(2016YFC 0701402)。
作者 : 徐桂明1,陈旭东2
单位 : 1.常州工程职业技术学院,213164;2.江苏省建筑科学研究院有限公司,南京 210008

徐桂明1,陈旭东2

徐桂明,陈旭东.预制混凝土夹心保温墙板热工性能试验研究与模拟分析[J].混凝土与水泥制品,2019(9):79-83.

XU G M,CHEN X D.Experimental Study and Numerical Analysis of Thermal Performance of Prefabricated Concrete Sandwich Insulation Wall Panels[J].China Concrete and Cement Products,2019

摘要
参数
结论
参考文献
引用本文
摘   要:对四块预制混凝土夹心墙板的热工性能进行了试验研究,通过改变拉结件的种类,探索其对墙板热工性能的影响,并采用有限元软件对其进行了模拟分析。结果表明:金属拉结件的热桥效应明显,与无拉结件的预制墙板相比,采用纤维拉结件的墙板的传热系数提高8%,而采用不同金属拉结件的墙板分别提高20.9%与14.3%;建议在实际工程应用中,对墙板的传热系数进行相应的放大,单位面积墙板的放大系数范围为0.71%~2.52%。Abstract: The thermal performance of four prefabricated concrete sandwich wall panels were tested,  the effects of the shear connectors on the thermal performance of the wall panels were explored by changing the types of connectors, and the simulation analysis of the performance of these wall panels was carried out by using the finite element software. The results show that the thermal bridge effect caused by shear connectors is obviously. Compared with the wall panel without connectors, the heat transfer coefficient of the wall panel with fiber connectors is increased by 8%, while the heat transfer coefficient of the wall panels with different metal connectors are increased by 20.9% and 14.3%, respectively. It is suggested that the relevant thermal performance parameters of the sandwich panels should be enlarged accordingly in practical engineering applications, and the amplification factor of per unit area should be taken from 0.71% to 2.25%.
关键词:
预制夹心墙板;热工性能;拉结件;模拟分析
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(1)钢筋套筒灌浆连接预制剪力墙平面外能承受较小荷载,大小只有平面内承载力的7%左右。但可以为整体结构提供一定的承载力贡献。破坏特称呈现较明显的脆性破坏,有倾覆趋势。
(2)竖向钢筋连接方式不同对预制剪力墙平面外承载力有较大影响,在竖向连接钢筋同等配筋率条件下,“梅花形”连接相比双排逐根连接其平面外极限承载力下降约15%,单排连接相比双排连接其平面外极限承载力下降约30%。
(3)预制剪力墙平面外刚度退化速度均大于现浇试件。
(4)竖向钢筋连接方式不同对剪力墙平面外刚度退化速度影响较大,宜采用双排逐根连接;当采用“梅花形”部分连接时,宜通过增大竖向连接钢筋直径保证截面配筋率;采用单排连接时应遵循相应标准,同时要保证剪力墙墙身配筋率满足规范要求。

[1] 钱稼茹,杨新科,秦珩,等.竖向钢筋采用不同连接方法的预制钢筋混凝土剪力墙抗震性能试验[J].建筑结构学报,2011,32(6):51-59.
[2] TONY H,JOSE R,JOHN B. Mander.Seismic Performance of Precast Reinforced and Prestressed Concrete Walls[J]. Journal of Structural Engineering,2003,129(3):286-296.
[3] 陈鹏,张兆强,周琼瑶.装配式混凝土剪力墙结构连接方式研究及应用综述[J].混凝土与水泥制品,2018(3):58-63.
[4] 成然.预制装配式套筒灌浆连接混凝土剪力墙抗震性能试验研究[D].西安:长安大学,2018.
[5] 余斯杰,吕西林,李检保.预制装配式框架柱典型拼装节点精细分析[J].结构工程师,2017,33(4):32-39.
[6] 严涛.不同连接方式对装配式剪力墙抗震性能的影响[D].长沙:湖南大学,2017.
[7] 中华人民共和国住房和城乡建设部.GB/T 51231—2016 装配式混凝土建筑技术标准[S].北京:中国建筑工业出版社,2017.

徐桂明,陈旭东.预制混凝土夹心保温墙板热工性能试验研究与模拟分析[J].混凝土与水泥制品,2019(9):79-83.

XU G M,CHEN X D.Experimental Study and Numerical Analysis of Thermal Performance of Prefabricated Concrete Sandwich Insulation Wall Panels[J].China Concrete and Cement Products,2019

 

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