混凝土薄壁方箱楼盖合理跨度数值模拟
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摘要
为研究混凝土薄壁方箱楼盖的受力性能,并分析其在满足承载性能和使用功能要求条件下薄壁方箱楼盖的合理跨度.采用有限元分析方法,分别建立10种不同跨度的混凝土薄壁方箱楼盖和普通实心楼盖模型.通过对比分析,研究在不同载荷作用下两种楼盖的力学特性.结果表明:6.3~15.9 m的跨度范围内,在竖向载荷作用下,相同厚度的薄壁方箱楼盖和普通实心楼盖相比,10.5~15.9 m跨度内两种楼盖的竖向挠度差值较大,薄壁方箱楼盖随着跨度的增长挠度增加较快,楼盖的整体刚度变化不大.在此跨度内应用薄壁方箱楼盖,不但满足规范规定的挠度限值要求,而且要比实心楼盖节省材料,减轻结构自重,是较为合理的结构形式.
To study the stress performance of the concrete thin-walled box floor and to analyze its reasonable span of the thin-walled core box floor under the condition of meeting requirements of bearing performance and functional, this paper used finite element analysis method, and established 10 different spans of the concrete thin-wall core box floor and ordinary solid floor. The mechanical properties of two kinds of floor in different load were studied through the comparison and analysis. Results show that with the span of 6.3~15.9 m, under the vertical load, compared the thin-wall core box floor with the solid floor in the same thickness, the vertical deflection difference of two floor is bigger in the span of 10.5~15.9 m, and the deflection of the thin-wall core box floor increases quickly as the growth of the span. The change of whole floor stiffness is not big, and in this span the application of thin-walled box floor saves material and reduces weight more than solid floor, which is relatively reasonable structural form.
To study the stress performance of the concrete thin-walled box floor and to analyze its reasonable span of the thin-walled core box floor under the condition of meeting requirements of bearing performance and functional, this paper used finite element analysis method, and established 10 different spans of the concrete thin-wall core box floor and ordinary solid floor. The mechanical properties of two kinds of floor in different load were studied through the comparison and analysis. Results show that with the span of 6.3~15.9 m, under the vertical load, compared the thin-wall core box floor with the solid floor in the same thickness, the vertical deflection difference of two floor is bigger in the span of 10.5~15.9 m, and the deflection of the thin-wall core box floor increases quickly as the growth of the span. The change of whole floor stiffness is not big, and in this span the application of thin-walled box floor saves material and reduces weight more than solid floor, which is relatively reasonable structural form.
引文
[1]中华人民共和国住房和城乡建设部.JGJ/268-2012.现浇混凝土空心楼盖技术规程[S].北京:中国建筑工业出版社,2012Housing and Urban-rural Development of the People's Republic of China.JGJ/268-2012.Technical Specification For Cast-In-Situ Concrete Hollow Floor Structure[S].Beijing:China Construction Industry Press,2012.
[2]中华人民共和国住房和城乡建设部.CECS175-2004.现浇混凝土空心楼盖技术规程[S].北京:中国建筑工业出版社,2004.Housing and urban-rural development of the People's Republic of China.CECS175-2004.Technical specification for cast-in-situ concrete hollow floor structure[S].Beijing:China construction industry press,2004.
[3]张阿粒.薄壁箱型现浇混凝土空腹版楼盖结构的理论分析[D].湖南:湖南大学,2004:12-21.Zhang Ali.The theoretic study on thin-wall core cast-in-site reinforced concrete hollow floor structure[D].Hunan:Hunan University,2004:12-21.
[4]程文瀼,江韩,高仲学,等.圆管式无柱帽空心无梁楼盖的实验研究[J].建筑结构学报,2004,25(5):8-84.Cheng Wenxiang.Jiang Han.Gao Zhongxue,et al.Experimental study of tubular voided flat plate floor[J].Journal of Building Structures,2004,25(5):8-84.
[5]程远兵,程文瀼,党纪.周边支承蜂窝式现浇空心板的设计与施工[J].施工技术,2005,34(12):63-64.Cheng Yuanbing.Cheng Wenxiang.Dang Ji.Design and construction of cellular voided cast-in-situ floor slab in frame structures[J].Constuction Technology,2005,34(12):63-64.
[6]程远兵,程文瀼.蜂窝式空心无梁楼盖的挠度计算[J].建筑结构,2005,35(10):25-27.Cheng Yuanbing.Cheng Wenxiang.Deformation calculation of cellular voided flat slab[J].Building Structures,2005,35(10):25-27.
[7]冯承辉.薄壁箱体现浇混凝土空腹版楼盖有限元分析与设计方法研究[D].长沙:湖南大学,2004:20-39.Feng Chenghui.The FEA and research of design method on thin-wall core box cast-in-site reinforced concrete hollow floor system[D].Changsha:Hunan University,2004:20-39.
[8]周庆,邹银生.现浇混凝土空心楼盖受力特性研究[J].建筑科学与工程学报,2005,22(4):57-60.Zhou Qing.Zou Yingsheng.Research on force resistance properties of cast-in-situ hollow concrete floor[J].Journal of Architect ure and Civil Engineering,2005,22(4):57-60.
[9]赵东昕,周红霞,谢靖中,等.现浇空心无梁楼盖在工业厂房与仓储工程中的应用与设计[J].建筑结构,2011,41(S2):86-90.Zhao Dongxin,Zhou Hongxia,Xie Jingzhong,et al.Design and applications of hollow flat slab structure in the industrial buildings and warehouses[J].Building Structures,,2011,41(S2):86-90.
[10]谢靖中.现浇空心板宏观基本本构关系[J].土木工程学报,2006,39(7):57-62.Xie Jingzhon.On zhe macroscopic constitutive relationship of cast-in-situ hollow slabs[J].China Civil Engineering Journal,2006,39(7):57-62.
[11]张秀礼.变形对夹层圆板非线性振动影响及其周期解[J].辽宁工程技术大学学报:自然科学版,2012,30(1):77-80.Zhang Xiuli.Impact and periodical solutions on nonlinear vibration of circular composite plate with distortion[J].Journal of Liaoning Technical University:Natural Science,2012,30(1):77-80.
[12]周娜,刘海卿.框架结构地震损伤演化过程数值分析[J].辽宁工程技术大学学报:自然科学版,2011,30(3):396-399.Zhou Na,Liu Haiqing.Damage evolution process of frame structure in earthquake[J].Journal of Liaoning Technical University:Natural Science,2011,30(3):396-399.
[2]中华人民共和国住房和城乡建设部.CECS175-2004.现浇混凝土空心楼盖技术规程[S].北京:中国建筑工业出版社,2004.Housing and urban-rural development of the People's Republic of China.CECS175-2004.Technical specification for cast-in-situ concrete hollow floor structure[S].Beijing:China construction industry press,2004.
[3]张阿粒.薄壁箱型现浇混凝土空腹版楼盖结构的理论分析[D].湖南:湖南大学,2004:12-21.Zhang Ali.The theoretic study on thin-wall core cast-in-site reinforced concrete hollow floor structure[D].Hunan:Hunan University,2004:12-21.
[4]程文瀼,江韩,高仲学,等.圆管式无柱帽空心无梁楼盖的实验研究[J].建筑结构学报,2004,25(5):8-84.Cheng Wenxiang.Jiang Han.Gao Zhongxue,et al.Experimental study of tubular voided flat plate floor[J].Journal of Building Structures,2004,25(5):8-84.
[5]程远兵,程文瀼,党纪.周边支承蜂窝式现浇空心板的设计与施工[J].施工技术,2005,34(12):63-64.Cheng Yuanbing.Cheng Wenxiang.Dang Ji.Design and construction of cellular voided cast-in-situ floor slab in frame structures[J].Constuction Technology,2005,34(12):63-64.
[6]程远兵,程文瀼.蜂窝式空心无梁楼盖的挠度计算[J].建筑结构,2005,35(10):25-27.Cheng Yuanbing.Cheng Wenxiang.Deformation calculation of cellular voided flat slab[J].Building Structures,2005,35(10):25-27.
[7]冯承辉.薄壁箱体现浇混凝土空腹版楼盖有限元分析与设计方法研究[D].长沙:湖南大学,2004:20-39.Feng Chenghui.The FEA and research of design method on thin-wall core box cast-in-site reinforced concrete hollow floor system[D].Changsha:Hunan University,2004:20-39.
[8]周庆,邹银生.现浇混凝土空心楼盖受力特性研究[J].建筑科学与工程学报,2005,22(4):57-60.Zhou Qing.Zou Yingsheng.Research on force resistance properties of cast-in-situ hollow concrete floor[J].Journal of Architect ure and Civil Engineering,2005,22(4):57-60.
[9]赵东昕,周红霞,谢靖中,等.现浇空心无梁楼盖在工业厂房与仓储工程中的应用与设计[J].建筑结构,2011,41(S2):86-90.Zhao Dongxin,Zhou Hongxia,Xie Jingzhong,et al.Design and applications of hollow flat slab structure in the industrial buildings and warehouses[J].Building Structures,,2011,41(S2):86-90.
[10]谢靖中.现浇空心板宏观基本本构关系[J].土木工程学报,2006,39(7):57-62.Xie Jingzhon.On zhe macroscopic constitutive relationship of cast-in-situ hollow slabs[J].China Civil Engineering Journal,2006,39(7):57-62.
[11]张秀礼.变形对夹层圆板非线性振动影响及其周期解[J].辽宁工程技术大学学报:自然科学版,2012,30(1):77-80.Zhang Xiuli.Impact and periodical solutions on nonlinear vibration of circular composite plate with distortion[J].Journal of Liaoning Technical University:Natural Science,2012,30(1):77-80.
[12]周娜,刘海卿.框架结构地震损伤演化过程数值分析[J].辽宁工程技术大学学报:自然科学版,2011,30(3):396-399.Zhou Na,Liu Haiqing.Damage evolution process of frame structure in earthquake[J].Journal of Liaoning Technical University:Natural Science,2011,30(3):396-399.