装配整体式预应力空心楼板试验研究
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摘要
本文研究的装配整体式预应力空心楼板是结合应用了预应力技术和圆孔空心板的叠合结构。它是采用先张法工艺生产的预应力圆孔板作为底板,通过二次浇筑叠合层,构成装配整体式楼板结构体系。这种结构体系具有跨度大、自重轻、施工方便、适应性强等特点,是目前极具潜力的一种楼板形式。
本文主要是对这种装配整体式预应力空心楼板在竖向荷载下的弹性阶段受力性能进行了试验和理论方面的研究。
通过静水加载试验,本文对这种装配整体式预应力空心楼板弹性阶段的受力性能进行了研究。试验研究表明,试验楼板在加载过程中呈现了明显的双向受力特征;通过在预制板侧拼缝处纵向肋中配置纵向钢筋和折线形钢筋,板端支座处及垂直于预制板的长跨方向与梁连接处均按构造配有负钢筋,并在支座处两跨板之间的横向肋内配置横向钢筋,板端孔内加堵块与后浇灌缝混凝土形成一体。这使得楼板具有良好的整体性能,还具备承载力高和抗裂性能良好等特点。
本文采用有限元分析程序ANSYS,对试验模型进行了分析,计算所得结构各点的荷载-位移曲线及结构内力分布,均与试验结果符合较好。
在理论研究方面,本文按弹性理论对双向空心板两方向的刚度进行了分析。由于圆孔的存在,空心板在两个方向的刚度计算方法与实心板不同,计算结果表明,空心板在两个方向的刚度有所不同,且主要取决于孔径与板厚之比(d/h),但两者的差别不大。根据此结论将本文所研究的装配整体式空心楼板计算模型简化为普通现浇空心板模型。在此基础上,对计算模型运用拟板法的方法进行了弹性阶段内的内力分析。本文对不同类型空心板计算模型的内力进行了大量计算,分析了空心板在竖向荷载作用下的内力分布规律。
The assembled monolithic prestressed hollow slab is a combined application of prestressed technology and hollow slabs technology. The assembled monolithic slab is composed of the prestressed hollow slab which is used as bottom plate and the secondary casting composite layer. This structural system with great potential in the future has the characters of large span, light weight, convenience of construction and good applicability.
In this paper, the research is mainly focused on the mechanical characteristics of the assembled monolithic hollow slab under vertical loads in elastic stage.
Through the experiment of the assembled monolithic prestressed hollow s under static water, its working performances of elastic stage are studied and analyzed. The experimental result indicates that the working character of the test slab is typically two-way obviously. The longitudinal reinforcement and fold-line reinforcement are disposed in the longitudinal rib of side slot of the prestressed slab, the detailing negative reinforcement is disposed in the bearing of slab end,the connection of beam and the length direction of prestressed slab, the transverse reinforcement is disposed in the transverse rib between two slab at the bearing. The hole of slab end is filled with the block and cast with post-casting concrete. Those makes the floor with good integral performance,high bearing capacity and good cracking resistance.
Finite element analysis program ANSYS has been used to analyse the testing model. The calculated force-displacement curve and distribution of inner-force distribution are conformed to the result of experiment.
In the aspect of theoretical analysis, stiffness of RC two-way hollow slab have been analyzed according to elastic theory. The result show that flexural stiffness of hollow slabs is different on two ways because of cavity, and the stiffness is mainly dependent on the ratio between hole aperture and plate thickness(d / h), but the difference between them if small. According to this conclusion, the assembled monolithic hollow slab that researched in this paper can simplify as common cast -in-place hollow slab model. Based on the simplification, the equivalent slab method can be used to analyse inner-force to the computation model under elastic stage. Through large calculation for inner-force of different hollow slab models, some rules of inner-force distribution of hollow slab under vertical loads can be obtained.
本文主要是对这种装配整体式预应力空心楼板在竖向荷载下的弹性阶段受力性能进行了试验和理论方面的研究。
通过静水加载试验,本文对这种装配整体式预应力空心楼板弹性阶段的受力性能进行了研究。试验研究表明,试验楼板在加载过程中呈现了明显的双向受力特征;通过在预制板侧拼缝处纵向肋中配置纵向钢筋和折线形钢筋,板端支座处及垂直于预制板的长跨方向与梁连接处均按构造配有负钢筋,并在支座处两跨板之间的横向肋内配置横向钢筋,板端孔内加堵块与后浇灌缝混凝土形成一体。这使得楼板具有良好的整体性能,还具备承载力高和抗裂性能良好等特点。
本文采用有限元分析程序ANSYS,对试验模型进行了分析,计算所得结构各点的荷载-位移曲线及结构内力分布,均与试验结果符合较好。
在理论研究方面,本文按弹性理论对双向空心板两方向的刚度进行了分析。由于圆孔的存在,空心板在两个方向的刚度计算方法与实心板不同,计算结果表明,空心板在两个方向的刚度有所不同,且主要取决于孔径与板厚之比(d/h),但两者的差别不大。根据此结论将本文所研究的装配整体式空心楼板计算模型简化为普通现浇空心板模型。在此基础上,对计算模型运用拟板法的方法进行了弹性阶段内的内力分析。本文对不同类型空心板计算模型的内力进行了大量计算,分析了空心板在竖向荷载作用下的内力分布规律。
The assembled monolithic prestressed hollow slab is a combined application of prestressed technology and hollow slabs technology. The assembled monolithic slab is composed of the prestressed hollow slab which is used as bottom plate and the secondary casting composite layer. This structural system with great potential in the future has the characters of large span, light weight, convenience of construction and good applicability.
In this paper, the research is mainly focused on the mechanical characteristics of the assembled monolithic hollow slab under vertical loads in elastic stage.
Through the experiment of the assembled monolithic prestressed hollow s under static water, its working performances of elastic stage are studied and analyzed. The experimental result indicates that the working character of the test slab is typically two-way obviously. The longitudinal reinforcement and fold-line reinforcement are disposed in the longitudinal rib of side slot of the prestressed slab, the detailing negative reinforcement is disposed in the bearing of slab end,the connection of beam and the length direction of prestressed slab, the transverse reinforcement is disposed in the transverse rib between two slab at the bearing. The hole of slab end is filled with the block and cast with post-casting concrete. Those makes the floor with good integral performance,high bearing capacity and good cracking resistance.
Finite element analysis program ANSYS has been used to analyse the testing model. The calculated force-displacement curve and distribution of inner-force distribution are conformed to the result of experiment.
In the aspect of theoretical analysis, stiffness of RC two-way hollow slab have been analyzed according to elastic theory. The result show that flexural stiffness of hollow slabs is different on two ways because of cavity, and the stiffness is mainly dependent on the ratio between hole aperture and plate thickness(d / h), but the difference between them if small. According to this conclusion, the assembled monolithic hollow slab that researched in this paper can simplify as common cast -in-place hollow slab model. Based on the simplification, the equivalent slab method can be used to analyse inner-force to the computation model under elastic stage. Through large calculation for inner-force of different hollow slab models, some rules of inner-force distribution of hollow slab under vertical loads can be obtained.
引文
[1] 丁大钧,丁大业. 钢筋混凝土楼盖计算. 上海:大东书局, 1954, 15-178
[2] 林同炎, NED H. BURNS 著. 预应力混凝土结构设计(第三版). 路湛沁, 黄裳, 马誉美译. 中国铁道出版社, 1983, 9-56
[3] 杜拱辰编著. 现代预应力混凝土结构. 中国建筑工业出版社,1988, 6-78
[4] 周旺华.现代混凝土叠合结构.北京:中国建筑工业出版社,1998, 12-180
[5] 赵顺波, 张新中. 混凝土叠合结构设计原理与应用. 北京: 中国水利水电出版社, 2001, 108-110
[6] Zoltán V. Nagy1,István Szatmári2.Composite Slab Design. 2nd Int. PhD Symposium in Civil Engineering 1998 Budapest, 1998, 16(4): 25-30
[7] 马克俭,黄勇,张华刚等. 钢筋混凝土空腹夹层楼盖体系的研究与应用. 建筑结构学报, 1997, 26(4): 55-64
[8] 仝为民, 张然, 张玉明. 现浇预应力空心板结构的应用, 建筑技术开发, 2003, 30(5): 4-5
[9] 蒋宁平, 郑青, 陈炯等. 普通跨度空心双向板结构技术经济分析. 见: 全国现浇混凝土空心楼盖结构技术交流会论文集. 上海: 中国工程建设标准化协会混凝土结构专业委员会, 2005.7, 232-237
[10] R.Szilard,Theory and analysis of plates classical and numerical methods,陈太平,戈鹤翔,周孝贤译. 北京: 中国铁道出版社出版, 1984, 40-541
[11] 徐天爽,徐有邻.双向叠台板拼缝传力性能的试验研究.建筑科学,2003, 19(6): 11-14
[12] W.G.Corley,J.O.Jirsa,Equicalent Frame Analysis for Flat Slabs, ACI, 1970, 67(11): 875-884
[13] 湖南大学, 福州大学. 建筑结构试验. 北京: 中国建筑工业出版社, 1997, 14-103
[14] 周明华. 土木工程结构试验. 东南大学出版社, 2002, 63-78
[15] David S.Hatcher, Mete A.Sozen and Chester P.Siess. Test of a Reinforced Concrete Flat Plate. A.S.C.E, Journal of the Structural Division. Proceedings of the American Society of Civil Engineers, 1965, 15(5): 1073-1115
[16] 程文襄, 李爱群. 混凝土楼盖设计. 北京: 中国建筑工业出版社, 1998, 37-96
[17] 郝文化,叶欲明,刘春山等. ANSYS 土木工程应用实例. 中国水利水电出版社, 2005, 75-119
[18] 易日编著. 使用 ANSYS 进行结构力学分析. 北京大学出版社, 2003, 36-89
[19] 陆新征,江见鲸. 用 ANSYS Solid65 单元分析混凝土组合构件复杂应力. 建筑结构, 2003, 33(6) :22-24
[20] David MeFarland, Bert L Smith, Walter D.Bernhart. Analysis Of Plates. Spartan Books, 1972, 53-96
[21] Elliott G, Clark L A. Circular RC hollow slab Stiffnesses. Journal of the Structural Division proceedings of the American Society of Civil Engineering, 1982, 108(11): 2379-2393
[22] Troitsky.M.S, D Sc. Stiffend Plates, Bending, Stability and Vibrations. Elsevier Scientific Publishing Company, 1976, 37-69
[23] 王理满,蔡仁祉,赵健等. 高强螺旋肋钢丝预应力混凝土叠合楼板的结构性能研究. 混凝土, 2001, 139(5): 54-56
[24] 沈浦生. 楼盖结构设计原理. 北京: 中国科学出版社, 2003, 99-126
[25] RJ.cope and L.A.Clark. Concrete Slabs, Analysis and Design. Elsevier Applied Science Publishers, LTD, 1984, 200-210
[26] 吴连元. 板壳理论. 上海交通大学出版社, 1986, 46-128
[27] R.park, W.L.Gambe. 钢筋混凝土板. 黄国桢, 成源华译. 同济大学出版社, 1992, 73-164
[28] 朱伯龙等. 装配整体式密肋楼板的理论及试验研究.见:同济大学科学技术情报站, 1961: 125-128
[29] A.H.尼尔逊. Design of Concrete Structures. 过镇海,方鄂华,庄崖屏等. 北京:中国建筑工业出版社, 2003, 261-422
[30] 高巍, 蓝宗建. 等效刚度板法对双向空心板受力性能的分析. 工业建筑, 2005, 35(增刊): 108-114
[31] 高巍. 现浇钢筋混凝土有梁双向空心板的试验研究. 硕士学位论文. 东南大学, 2004, 20-35
[32] C.J.Graham , A.S.,Long-Time Multiploers for Estimating Two-Way Slab Deflections, ACI, 1986, 83(6): 899-908
[33] 余安东. 升板结构设计原理. 上海:上海科学技术出版社, 1980, 14-65
[34] 徐芝纶. 弹性力学下册(第三版). 高等教育出版社, 1982, 86-146
[35] 曲庆璋. 弹性板理论. 人民交通出版社, 2000, 132-133
[36] R.Szilard 著. 板的理论和分析. 陈太平等译. 中国铁道出版社, 1984, 284-301
[37] S.Timoshenko, S.Woinowsky-Krieger. Theory of Plates and Shells(Second Edition). McGraw-Hill Book Company, inc, 1958, 389-404
[38] Fletcher,H.J.,and Thorne,C.J..Bending of Thin Rectangular Plates, Proceeding ofthe second U.S. Natl.Congress on Applied Mechanic held at Ann Arbor,Mich.in 1954, ASME, New York, 1955: 389-406
[39] Dubinsky, A.M.. Limit-Analysis of Two-way Reinfored Concrete Slabs(in Russian). Gosstrojizdat USSR,Kiev, 1961, 73-104
[40] 腾智明. 钢筋混凝土基本构件(第二版) [TU]. 北京: 清华大学出版社, 1987, 203-214
[41] ACI Committee 435, State-of-the-Art Report on Control of Two-Way Slab Deflections, ACI Structural Journal, July-August 1991, 88(4): 389-404
[42] R.H.Wood. Plastic and Elastic, Design of Slabs and Plates. London: Thames and Hudson, 1961, 764-771
[43] Artbur H.Nilson and Donald B.Walters. Deflection of Two-Way Floor Systems by the Equibalent Frame Method. ACI Journal, May 1975, 72(5): 210-218
[44] 王志远, 魏琏, 蓝宗建. 考虑钢筋混凝土梁板结构相互作用时楼板合理设计方法研究. 建筑结构, 2003, (9): 47-51
[45] 高仲学, 程文襄, 陈德文, 徐澄. 现浇混凝土无柱帽空心无梁楼盖的设计与施工. 特种结构, 2002, 19(2): 45-48
[46] G.Elliott and L.A.Clark. Circular Voided Concrete Slab Stiffnesses. Journal of the Structural Division Proceedings of the American Society of Civil Engineering, November, 1982, 108(6): 369-378
[2] 林同炎, NED H. BURNS 著. 预应力混凝土结构设计(第三版). 路湛沁, 黄裳, 马誉美译. 中国铁道出版社, 1983, 9-56
[3] 杜拱辰编著. 现代预应力混凝土结构. 中国建筑工业出版社,1988, 6-78
[4] 周旺华.现代混凝土叠合结构.北京:中国建筑工业出版社,1998, 12-180
[5] 赵顺波, 张新中. 混凝土叠合结构设计原理与应用. 北京: 中国水利水电出版社, 2001, 108-110
[6] Zoltán V. Nagy1,István Szatmári2.Composite Slab Design. 2nd Int. PhD Symposium in Civil Engineering 1998 Budapest, 1998, 16(4): 25-30
[7] 马克俭,黄勇,张华刚等. 钢筋混凝土空腹夹层楼盖体系的研究与应用. 建筑结构学报, 1997, 26(4): 55-64
[8] 仝为民, 张然, 张玉明. 现浇预应力空心板结构的应用, 建筑技术开发, 2003, 30(5): 4-5
[9] 蒋宁平, 郑青, 陈炯等. 普通跨度空心双向板结构技术经济分析. 见: 全国现浇混凝土空心楼盖结构技术交流会论文集. 上海: 中国工程建设标准化协会混凝土结构专业委员会, 2005.7, 232-237
[10] R.Szilard,Theory and analysis of plates classical and numerical methods,陈太平,戈鹤翔,周孝贤译. 北京: 中国铁道出版社出版, 1984, 40-541
[11] 徐天爽,徐有邻.双向叠台板拼缝传力性能的试验研究.建筑科学,2003, 19(6): 11-14
[12] W.G.Corley,J.O.Jirsa,Equicalent Frame Analysis for Flat Slabs, ACI, 1970, 67(11): 875-884
[13] 湖南大学, 福州大学. 建筑结构试验. 北京: 中国建筑工业出版社, 1997, 14-103
[14] 周明华. 土木工程结构试验. 东南大学出版社, 2002, 63-78
[15] David S.Hatcher, Mete A.Sozen and Chester P.Siess. Test of a Reinforced Concrete Flat Plate. A.S.C.E, Journal of the Structural Division. Proceedings of the American Society of Civil Engineers, 1965, 15(5): 1073-1115
[16] 程文襄, 李爱群. 混凝土楼盖设计. 北京: 中国建筑工业出版社, 1998, 37-96
[17] 郝文化,叶欲明,刘春山等. ANSYS 土木工程应用实例. 中国水利水电出版社, 2005, 75-119
[18] 易日编著. 使用 ANSYS 进行结构力学分析. 北京大学出版社, 2003, 36-89
[19] 陆新征,江见鲸. 用 ANSYS Solid65 单元分析混凝土组合构件复杂应力. 建筑结构, 2003, 33(6) :22-24
[20] David MeFarland, Bert L Smith, Walter D.Bernhart. Analysis Of Plates. Spartan Books, 1972, 53-96
[21] Elliott G, Clark L A. Circular RC hollow slab Stiffnesses. Journal of the Structural Division proceedings of the American Society of Civil Engineering, 1982, 108(11): 2379-2393
[22] Troitsky.M.S, D Sc. Stiffend Plates, Bending, Stability and Vibrations. Elsevier Scientific Publishing Company, 1976, 37-69
[23] 王理满,蔡仁祉,赵健等. 高强螺旋肋钢丝预应力混凝土叠合楼板的结构性能研究. 混凝土, 2001, 139(5): 54-56
[24] 沈浦生. 楼盖结构设计原理. 北京: 中国科学出版社, 2003, 99-126
[25] RJ.cope and L.A.Clark. Concrete Slabs, Analysis and Design. Elsevier Applied Science Publishers, LTD, 1984, 200-210
[26] 吴连元. 板壳理论. 上海交通大学出版社, 1986, 46-128
[27] R.park, W.L.Gambe. 钢筋混凝土板. 黄国桢, 成源华译. 同济大学出版社, 1992, 73-164
[28] 朱伯龙等. 装配整体式密肋楼板的理论及试验研究.见:同济大学科学技术情报站, 1961: 125-128
[29] A.H.尼尔逊. Design of Concrete Structures. 过镇海,方鄂华,庄崖屏等. 北京:中国建筑工业出版社, 2003, 261-422
[30] 高巍, 蓝宗建. 等效刚度板法对双向空心板受力性能的分析. 工业建筑, 2005, 35(增刊): 108-114
[31] 高巍. 现浇钢筋混凝土有梁双向空心板的试验研究. 硕士学位论文. 东南大学, 2004, 20-35
[32] C.J.Graham , A.S.,Long-Time Multiploers for Estimating Two-Way Slab Deflections, ACI, 1986, 83(6): 899-908
[33] 余安东. 升板结构设计原理. 上海:上海科学技术出版社, 1980, 14-65
[34] 徐芝纶. 弹性力学下册(第三版). 高等教育出版社, 1982, 86-146
[35] 曲庆璋. 弹性板理论. 人民交通出版社, 2000, 132-133
[36] R.Szilard 著. 板的理论和分析. 陈太平等译. 中国铁道出版社, 1984, 284-301
[37] S.Timoshenko, S.Woinowsky-Krieger. Theory of Plates and Shells(Second Edition). McGraw-Hill Book Company, inc, 1958, 389-404
[38] Fletcher,H.J.,and Thorne,C.J..Bending of Thin Rectangular Plates, Proceeding ofthe second U.S. Natl.Congress on Applied Mechanic held at Ann Arbor,Mich.in 1954, ASME, New York, 1955: 389-406
[39] Dubinsky, A.M.. Limit-Analysis of Two-way Reinfored Concrete Slabs(in Russian). Gosstrojizdat USSR,Kiev, 1961, 73-104
[40] 腾智明. 钢筋混凝土基本构件(第二版) [TU]. 北京: 清华大学出版社, 1987, 203-214
[41] ACI Committee 435, State-of-the-Art Report on Control of Two-Way Slab Deflections, ACI Structural Journal, July-August 1991, 88(4): 389-404
[42] R.H.Wood. Plastic and Elastic, Design of Slabs and Plates. London: Thames and Hudson, 1961, 764-771
[43] Artbur H.Nilson and Donald B.Walters. Deflection of Two-Way Floor Systems by the Equibalent Frame Method. ACI Journal, May 1975, 72(5): 210-218
[44] 王志远, 魏琏, 蓝宗建. 考虑钢筋混凝土梁板结构相互作用时楼板合理设计方法研究. 建筑结构, 2003, (9): 47-51
[45] 高仲学, 程文襄, 陈德文, 徐澄. 现浇混凝土无柱帽空心无梁楼盖的设计与施工. 特种结构, 2002, 19(2): 45-48
[46] G.Elliott and L.A.Clark. Circular Voided Concrete Slab Stiffnesses. Journal of the Structural Division Proceedings of the American Society of Civil Engineering, November, 1982, 108(6): 369-378