混凝土灌芯石膏板板梁的试验研究
|
摘要
混凝土灌芯石膏板结构是从澳大利亚引进的一种新型建筑体系。它用纤维增强石膏板作为墙体模板,石膏板在工厂预制完成运到现场,现场进行装配(孔垂直)后浇筑混凝土形成承重的墙板。在实际工程中,为了预留门窗洞口,需将相应位置的墙板锯掉,并在洞口上部剩余的墙板中配置钢筋,浇筑混凝土,来充当门窗洞口部位的过梁或构成连梁。本文对门窗洞口部位的混凝土灌芯石膏板板梁进行了试验研究。
本文设计了九根混凝土灌芯石膏板板梁,进行了均布荷载作用下的静力试验,试验构件最后均发生了剪切破坏。在试验的基础上,本文分别用协调桁架模型和桁架—拱模型分析了混凝土灌芯石膏板板梁的受剪机理和破坏特点。在协调桁架模型的基础上,将石膏板面积进行等效换算,引入了截面换算系数ξ,对石膏板、混凝土共同承担荷载作用的工作机理进行了分析。进而又用桁架—拱模型对试验进行了分析。最后,将两种模型的分析结果与试验进行了对比。
文章结尾总结了课题的研究成果,并对其进一步的研究做出了展望。
Concrete-filled plasterboard structure is a kind of new-type building system introduced from Australia in which used fiber-reinforced plasterboard as the wall template. The plasterboard was prefabricated in the plant, and assembled together (the hole is vertical) in the building site. It was used as bearing wall after placed the concrete into it. In the actual project, it needs to cut off the corresponding position’s plasterboard in order to achieve the hole of the doors and windows, then, the reinforced concrete were placed into the residual plasterboard and used it as a lintel or a connecting beam above the hole. In the text, some experiments were accomplished to study the concrete-filled plasterboard beam above the hole.
Through the experiments with nine blocks of full size concrete-filled plasterboard beams, which were under static loading, and happened shearing failures, this paper analyzed the mechanism of the beams to stand against shearing force and the characters of destruction with the modified truss model and the truss-arc model. Base on the modified truss model, a section conversion coefficientξwas introduced considering the influence of the plasterboard to shearing capacity, and analyzed the mechanism that concrete works together with plasterboard. And more, the article also analyzed the experiments with the truss-arc model. Finally, the article comparing the analysis results of two models with the experiments results.
In the end of the text, some conclusions were drew on the experiments and theory analysis in this paper. At last the author gave some expectation for future researching.
本文设计了九根混凝土灌芯石膏板板梁,进行了均布荷载作用下的静力试验,试验构件最后均发生了剪切破坏。在试验的基础上,本文分别用协调桁架模型和桁架—拱模型分析了混凝土灌芯石膏板板梁的受剪机理和破坏特点。在协调桁架模型的基础上,将石膏板面积进行等效换算,引入了截面换算系数ξ,对石膏板、混凝土共同承担荷载作用的工作机理进行了分析。进而又用桁架—拱模型对试验进行了分析。最后,将两种模型的分析结果与试验进行了对比。
文章结尾总结了课题的研究成果,并对其进一步的研究做出了展望。
Concrete-filled plasterboard structure is a kind of new-type building system introduced from Australia in which used fiber-reinforced plasterboard as the wall template. The plasterboard was prefabricated in the plant, and assembled together (the hole is vertical) in the building site. It was used as bearing wall after placed the concrete into it. In the actual project, it needs to cut off the corresponding position’s plasterboard in order to achieve the hole of the doors and windows, then, the reinforced concrete were placed into the residual plasterboard and used it as a lintel or a connecting beam above the hole. In the text, some experiments were accomplished to study the concrete-filled plasterboard beam above the hole.
Through the experiments with nine blocks of full size concrete-filled plasterboard beams, which were under static loading, and happened shearing failures, this paper analyzed the mechanism of the beams to stand against shearing force and the characters of destruction with the modified truss model and the truss-arc model. Base on the modified truss model, a section conversion coefficientξwas introduced considering the influence of the plasterboard to shearing capacity, and analyzed the mechanism that concrete works together with plasterboard. And more, the article also analyzed the experiments with the truss-arc model. Finally, the article comparing the analysis results of two models with the experiments results.
In the end of the text, some conclusions were drew on the experiments and theory analysis in this paper. At last the author gave some expectation for future researching.
引文
[1]李中富,中国住宅产业化发展的步骤、途径与策略,哈尔滨建筑大学学报,2000,33(1):92~96
[2]苑振芳,刘斌,我国砌体结构发展状况和展望,建筑结构,1999(10):9~13
[3]刘先明,李爱群等,带边框砌体剪力墙承载力和变形的计算分析,东南大学学报,2001,31(1),62~68
[4]王宁,高层建筑短肢剪力墙结构弹塑性模型及地震反应分析:[硕士学位论文],西安;西安建筑科技大学,2004
[5]李升才,江见鲸等,复合剪力墙板弯曲开裂强度计算方法的探讨,工业建筑,2001,31(7),21~23
[6]谢强,姚谦峰等,高层轻板框架结构的刚度和承载力分析,西安建筑科技大学学报,2000,32(3),205~208
[7]孟海,密肋复合墙板试验研究及刚度分析:[硕士学位论文],西安;西安建筑科技大学,2004
[8]朱茂存、陈忠汉,一种新型的住宅楼板-大跨夹芯叠合板,建筑技术开发,2002,29(12):34~36
[9]贾栗,赵永强,赵永生,速成墙板在工程中的应用,建材产品与应用,2002(4):20~21
[10]郇筱林,纤维增强石膏板-钢筋混凝土叠合楼板的试验研究和有限元分析:[硕士学位论文],天津;天津大学,2003
[11]姚振纲,刘祖华,建筑结构试验,上海:同济大学出版社,1996
[12]李忠献,工程结构试验理论与技术,天津:天津大学出版社,2004,132~180
[13]混凝土结构工程施工质量验收规范,GB50204—2002,中华人民共和国国家标准,北京:中国建筑工业出版社,2002
[14]过镇海,时旭东,钢筋混凝土原理和分析,北京:清华大学出版社,2003 ,12~289
[15]曹媛萍,活性粉末混凝土(RPC)无腹筋简支梁斜截面承载力研究:[硕士学位论文],北京;北京交通大学,2004
[16]Hsu Thomas T C.Softened truss model theory for shear and torsion [J]. ACI Structural Journal,1988,85(6):624~635
[17]Vecchio F J, Collins M P. The modified compression-field theory for reinforced concrete elements subjected to shear[J]. ACI Structural Journal,1986,83(2):219~231
[18] 贾平一,碳纤维增强钢筋混凝土构件受剪承载力的试验研究:[硕士学位论文],天津;天津大学,2001
[19]Ngo D, Scordelis A C. Finite Element Analysis of Reinforced Cconcrete Beam. ACI, 1967,63(3):152~164
[20]沈聚敏,王传志,江见鲸,钢筋混凝土有限元与板壳极限分析,北京:清华大学出版社,1993
[21]施岚青,喻永言等,钢筋混凝土构件斜截面抗剪强度计算.见:中国建筑科学研究院编.钢筋混凝土结构设计与构造—1985年设计规范背景资料汇编,1985,112~139
[22]郑建岚,钱在兹,协调桁架模型在抗剪承载力中的应用.浙江大学学报(自然科学版),1998(5),635-642
[23]钱国梁,陈跃庆,何英明,钢筋砼梁与深梁承载力统一计算方法的探讨.建筑结构,1995(8)
[24]中国建筑科学研究院译,ACI 318M-89 美国钢筋混凝土房屋建筑规范(1992年公制修订版).北京,1993
[25]混凝土结构设计规范,GB50010—2002,中华人民共和国国家标准,北京:中国建筑工业出版社,2002
[26]刘立新,钢筋混凝土深梁、短梁和浅梁受剪承载力的统一计算方法,建筑结构学报,1995,16(4):13~21
[27]崔钦淑,康谷贻,钢筋混凝土梁极限受剪承载力计算模型,工程力学(增刊),1995
[28]崔钦淑,钢筋混凝土梁极限受剪承载力计算模型:[硕士学位论文],天津;天津大学,1994
[2]苑振芳,刘斌,我国砌体结构发展状况和展望,建筑结构,1999(10):9~13
[3]刘先明,李爱群等,带边框砌体剪力墙承载力和变形的计算分析,东南大学学报,2001,31(1),62~68
[4]王宁,高层建筑短肢剪力墙结构弹塑性模型及地震反应分析:[硕士学位论文],西安;西安建筑科技大学,2004
[5]李升才,江见鲸等,复合剪力墙板弯曲开裂强度计算方法的探讨,工业建筑,2001,31(7),21~23
[6]谢强,姚谦峰等,高层轻板框架结构的刚度和承载力分析,西安建筑科技大学学报,2000,32(3),205~208
[7]孟海,密肋复合墙板试验研究及刚度分析:[硕士学位论文],西安;西安建筑科技大学,2004
[8]朱茂存、陈忠汉,一种新型的住宅楼板-大跨夹芯叠合板,建筑技术开发,2002,29(12):34~36
[9]贾栗,赵永强,赵永生,速成墙板在工程中的应用,建材产品与应用,2002(4):20~21
[10]郇筱林,纤维增强石膏板-钢筋混凝土叠合楼板的试验研究和有限元分析:[硕士学位论文],天津;天津大学,2003
[11]姚振纲,刘祖华,建筑结构试验,上海:同济大学出版社,1996
[12]李忠献,工程结构试验理论与技术,天津:天津大学出版社,2004,132~180
[13]混凝土结构工程施工质量验收规范,GB50204—2002,中华人民共和国国家标准,北京:中国建筑工业出版社,2002
[14]过镇海,时旭东,钢筋混凝土原理和分析,北京:清华大学出版社,2003 ,12~289
[15]曹媛萍,活性粉末混凝土(RPC)无腹筋简支梁斜截面承载力研究:[硕士学位论文],北京;北京交通大学,2004
[16]Hsu Thomas T C.Softened truss model theory for shear and torsion [J]. ACI Structural Journal,1988,85(6):624~635
[17]Vecchio F J, Collins M P. The modified compression-field theory for reinforced concrete elements subjected to shear[J]. ACI Structural Journal,1986,83(2):219~231
[18] 贾平一,碳纤维增强钢筋混凝土构件受剪承载力的试验研究:[硕士学位论文],天津;天津大学,2001
[19]Ngo D, Scordelis A C. Finite Element Analysis of Reinforced Cconcrete Beam. ACI, 1967,63(3):152~164
[20]沈聚敏,王传志,江见鲸,钢筋混凝土有限元与板壳极限分析,北京:清华大学出版社,1993
[21]施岚青,喻永言等,钢筋混凝土构件斜截面抗剪强度计算.见:中国建筑科学研究院编.钢筋混凝土结构设计与构造—1985年设计规范背景资料汇编,1985,112~139
[22]郑建岚,钱在兹,协调桁架模型在抗剪承载力中的应用.浙江大学学报(自然科学版),1998(5),635-642
[23]钱国梁,陈跃庆,何英明,钢筋砼梁与深梁承载力统一计算方法的探讨.建筑结构,1995(8)
[24]中国建筑科学研究院译,ACI 318M-89 美国钢筋混凝土房屋建筑规范(1992年公制修订版).北京,1993
[25]混凝土结构设计规范,GB50010—2002,中华人民共和国国家标准,北京:中国建筑工业出版社,2002
[26]刘立新,钢筋混凝土深梁、短梁和浅梁受剪承载力的统一计算方法,建筑结构学报,1995,16(4):13~21
[27]崔钦淑,康谷贻,钢筋混凝土梁极限受剪承载力计算模型,工程力学(增刊),1995
[28]崔钦淑,钢筋混凝土梁极限受剪承载力计算模型:[硕士学位论文],天津;天津大学,1994