PK预应力叠合楼板的试验研究与理论分析
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摘要
PK预应力叠合楼板是对传统叠合楼板改进后研究出的一种新型楼板结构,其预制构件底板为预应力带肋薄板,且肋上预留孔洞,施工时将预制底板作为模板,通过预制构件板肋长方形孔洞配置横向非预应力钢筋,再在板拼缝处布置折线形钢筋后浇筑混凝土,待后浇混凝土结硬后即形成PK预应力双向叠合楼板。该楼板结构具有较好的整体性和抗裂性能,并且施工时不用模板和支撑,便于工厂制作,其应用前景广阔。本文在PK预应力叠合板构件研究的基础上,对PK预应力双向叠合楼板做了深入的研究。其主要研究如下:
1、对PK预应力叠合楼盖进行了静水加载试验。通过对试验楼盖的变形、应变、刚度、抗裂性等分析,得出PK预应力叠合楼板具有明显的双向受力特性,良好的整体性能和抗裂性能;同时结合试验结果,对PK预应力叠合楼板的荷载传递进行了分析。
2、采用大型有限元软件ANSYS对PK预应力叠合楼板的试验模型加载阶段进行了有限元模拟,并与试验结果进行比较;同时还对叠合板弹塑性阶段受力性能进行了初步的分析。
3、根据正交各向异性板模型分析建立了刚度比和荷载分配角度的近似关系式,结合试验分析推算出PK预应力叠合板两个方向的近似刚度比,在此基础上应用经典弯曲薄板理论建立了与普通钢筋混凝土双向板类似的弹性计算系数表,同时探讨了PK预应力混凝土叠合板的弹性设计方法。
4、对PK预应力混凝土双向叠合板的极限承载力和抗裂性能进行了初步的分析,并提出了近似的计算方法。
5、结合具体的实际项目,对PK预应力叠合板的应用优势、使用阶段受力性能及经济效益进行了简要分析,说明此叠合板具有良好的性能和经济效益,是一种值得大力推广应用的新型楼盖结构。
PK prestressed composite slab, whose prefabricated component is a prestressed ribbed panel and has preparative holes on its rib, is a new composite floor structure by improving the traditional prestressed composite slab. Under the construction, it uses the prefabricated component as the template; collocates the transverse imprestressed reinforcing steel bar through the rib’s rectangle holes; then moulds concrete after disposing the reinforcing steel bar with the form of broken line in the slit of the slab; and finally the PK prestressed two-way composite slab is formed after the concrete achieves the intensity. This floor structure has the good advantages of integrity and crack-resistance. And with this floor structure, it is useless to use the template and bracing under the construction. So it is convenient for factory working and its applied future is very expansive. This thesis does deep research on the PK prestressed two-way composite slab, based on the researches on PK prestressed composite slab. And all the researches are as follow:
1.Do the static water loading experiment on the PK prestressed composite slab. Through analyzing the distortion, strain, rigidity and crack-resistance of the experimental slab, it gets that the PK pre-stressed composite slab has the obvious advantage of two-way working performances, integrity and crack-resistance. And combining with the experimental results, this thesis analyzes the load transfer of PK prestressed composite slab.
2. This thesis uses large-scale finite element software ANSYS to simulation PK prestressed composite slab experimental model load stage, and carries on the comparison with the test result; Simultaneously, this study analyzes primarily PK composite slab elastoplasticity stage working performances.
3.According to the orthogonal aeolotropic board model analysis, the approximate relative pattern of rigidity rate and the angle of load assignment is founded. And union experiment analysis, the two-way approximate rigidity rate of PK prestressed composite slab is got. Applying the classic elastic plane theory on the base of this, this study has calculated the elastic calculating coefficient tables which are similar to two-way slab of the common reinforced concrete. Furthermore, the elastic design method of PK prestressed two-way composite slab is explored.
4.This study also analyzes primarily the limit supporting capacity and crack-resistance of PK prestressed two-way composite slab. And it has put forward the approximate calculating method.
5.By integrating with the actual project, the brief analysis of the applied advantages of PK prestressed composite slab, working performances in the using stage and the economic benefit shows that this composite slab has good capability and economic benefit, and it is worth spreading and applying this new floor structure.
1、对PK预应力叠合楼盖进行了静水加载试验。通过对试验楼盖的变形、应变、刚度、抗裂性等分析,得出PK预应力叠合楼板具有明显的双向受力特性,良好的整体性能和抗裂性能;同时结合试验结果,对PK预应力叠合楼板的荷载传递进行了分析。
2、采用大型有限元软件ANSYS对PK预应力叠合楼板的试验模型加载阶段进行了有限元模拟,并与试验结果进行比较;同时还对叠合板弹塑性阶段受力性能进行了初步的分析。
3、根据正交各向异性板模型分析建立了刚度比和荷载分配角度的近似关系式,结合试验分析推算出PK预应力叠合板两个方向的近似刚度比,在此基础上应用经典弯曲薄板理论建立了与普通钢筋混凝土双向板类似的弹性计算系数表,同时探讨了PK预应力混凝土叠合板的弹性设计方法。
4、对PK预应力混凝土双向叠合板的极限承载力和抗裂性能进行了初步的分析,并提出了近似的计算方法。
5、结合具体的实际项目,对PK预应力叠合板的应用优势、使用阶段受力性能及经济效益进行了简要分析,说明此叠合板具有良好的性能和经济效益,是一种值得大力推广应用的新型楼盖结构。
PK prestressed composite slab, whose prefabricated component is a prestressed ribbed panel and has preparative holes on its rib, is a new composite floor structure by improving the traditional prestressed composite slab. Under the construction, it uses the prefabricated component as the template; collocates the transverse imprestressed reinforcing steel bar through the rib’s rectangle holes; then moulds concrete after disposing the reinforcing steel bar with the form of broken line in the slit of the slab; and finally the PK prestressed two-way composite slab is formed after the concrete achieves the intensity. This floor structure has the good advantages of integrity and crack-resistance. And with this floor structure, it is useless to use the template and bracing under the construction. So it is convenient for factory working and its applied future is very expansive. This thesis does deep research on the PK prestressed two-way composite slab, based on the researches on PK prestressed composite slab. And all the researches are as follow:
1.Do the static water loading experiment on the PK prestressed composite slab. Through analyzing the distortion, strain, rigidity and crack-resistance of the experimental slab, it gets that the PK pre-stressed composite slab has the obvious advantage of two-way working performances, integrity and crack-resistance. And combining with the experimental results, this thesis analyzes the load transfer of PK prestressed composite slab.
2. This thesis uses large-scale finite element software ANSYS to simulation PK prestressed composite slab experimental model load stage, and carries on the comparison with the test result; Simultaneously, this study analyzes primarily PK composite slab elastoplasticity stage working performances.
3.According to the orthogonal aeolotropic board model analysis, the approximate relative pattern of rigidity rate and the angle of load assignment is founded. And union experiment analysis, the two-way approximate rigidity rate of PK prestressed composite slab is got. Applying the classic elastic plane theory on the base of this, this study has calculated the elastic calculating coefficient tables which are similar to two-way slab of the common reinforced concrete. Furthermore, the elastic design method of PK prestressed two-way composite slab is explored.
4.This study also analyzes primarily the limit supporting capacity and crack-resistance of PK prestressed two-way composite slab. And it has put forward the approximate calculating method.
5.By integrating with the actual project, the brief analysis of the applied advantages of PK prestressed composite slab, working performances in the using stage and the economic benefit shows that this composite slab has good capability and economic benefit, and it is worth spreading and applying this new floor structure.
引文
[1]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
[2]Cook J P. Composite Structure Methods. New york:McGraw-Hill Book Company inc, 1976, 121-150
[3]蒋森荣.预应力钢筋混凝土结构学.北京:建筑工程出版社,1959,56-78
[4]原湖北建筑工业学院等编译.装配整体式结构编译文集.1978,122-158
[5]原西德混凝土和钢筋混凝土结构设计和施工规范.1972,345-450
[6]中国建筑标准设计研究所译文.由预应力薄板和后浇混凝土组成的连续板.1982,1-16
[7]法国建筑科学技术中心.用预制薄板和现浇混凝土层组成的空心楼板的技术规定.1979,15-26
[8]肖龙.钢筋混凝土结构施工合理化的半预制结构体系.建筑技术开发,1994,21(4):34-53
[9]朱伯龙等.装配整体式密肋楼板的理论及试验研究.上海:同济大学科学技术情报站,1961,56-78
[10]天津大学,同济大学,南京工学院.钢筋混凝土结构(下).北京:中国建筑工业出版社,1980,329-340
[11]钢筋混凝土结构设计规范 TJ10-74.北京:中国建筑工业出版社,1974,45-48
[12]国家建委建筑科学研究所.冷拔低碳钢铰线在多层厂房结构中的应用.北京: 国家建委建筑科学研究所.1977,3-18
[13]周晓芬,朱丽松,黄海等.高效预应力混凝土叠合结构在高层建筑中的应用.建筑结构,1997,1(10):8-11
[14]北京有色冶金设计院.装配整体式多层厂房设计参考资料.土建技术,1977,10(39):10-15
[15]轻工业部第一设计院.多层厂房装配整体结构设计,1974,22-31
[16]四川省电力设计院.叠合结构在小火电工程中的应用.成都:四川省电力设计院,1985,1-54
[17]全国通用建筑标准设计.预应力混凝土叠合板 JSJT-93.1987,8-18
[18]ACI—ASCE Committee 333. Tentative Recommendations for Design of Composite Beams and Girder for Biuldings.J.of ACI,1960,57(12):609-628
[19]Douglas, Mechenry el. Development of continuity in precast prestressed construction. sixth congress of international Association for Bridge andStructural engineering,1961,87-96
[20]Zoltán V. Nagy1,István Szatmári2. Composite Slab Design. 2nd Int. PhD Symposium in Civil Engineering 1998 Budapest,1998,16(4):25-30
[21]A.Y.Elghazouli,B.A.Izzuddin.Realistic Modeling of Composite and Reinforced Concrete Floor Slabs under Extreme Loading. II: Verification and Application. Journal of Structural Engineering,2004,130(12):1985-1996
[22]Clinton O.Rex,W.Samuel Easterling.Behavior and Modeling of Reinforced Composite Slab in Tension. Journal of Structural Engineering, 2000,126(7):764-771
[23]混凝土结构设计规范 GBJ50010-2002.北京:中国建筑工业出版社,2002,41-150
[24]石玲,贺采旭.两跨预应力混凝土连续叠合板的弯矩调幅值的试验研究.武汉水利电力学院学报,1991,37(3):102-135
[25]田安国.冷轧带肋钢筋混凝土叠合板的试验研究.建筑结构,2000,12(1):15-18
[26]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,2001,13(5):54-56
[27]聂建国,陈必磊,陈戈等.钢筋混凝土叠合板的试验研究.工业建筑,2003,13(12):11-14
[28]杨建水.钢筋混凝土双向叠合板抗剪强度的极限分析.郑州工业大学学报,1997,7(3):72-76
[29]王晓锋.单向预应力双向叠合楼盖试验研究:[中国建筑科学研究院硕士学位论文].北京:中国建筑科学研究院,2003,39-46
[30]徐天爽,徐有邻.双向叠合板拼缝传力性能的试验研究.建筑科学,2003,19(6):11-13
[31]罗健雄,赵更歧,张雁华.高效预应力双向叠合楼盖的特点及工程应用.郑州工业大学学报,2001,19(4):71-73
[32]尚守平,吴方伯,张毛心等.PK 预应力混凝土叠合板.湖南大学结构工程研究所,2003,3-31
[33]郑伦存.PK 预应力混凝土叠合板的试验研究与应用:[湖南大学硕士学位论文].长沙:湖南大学,2003,8-20
[34]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,2001,104-111
[35]吴晓鹏.现浇预应力空心板梁体系受力特性研究:[浙江大学硕士学位论文].浙江:浙江大学,2005,18-24
[36]Bathe K J. Finite Element Procedures in Engineering Analysis. Prentice-Hall, Inc,1977,44-68
[37]Zienkiewicz O C, Morgan K. Finite Elements and Approximation. John Wiley &Sons, Inc,1983,23-59
[38]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
[39]R.Szilard 著,陈太平等译.板的理论和分析.北京:中国铁道出版社出版,1984,284-301
[40]S.Timoshenko,S.Woinowsky-Krieger.Theory of Plates and Shells(Second Edition).New York:McGraw-Hill Book Company inc,1958,389-404
[41]Fletcher,H.J.,and Thorne,C.J..Bending of Thin Rectangular Plates,Proceeding of the second U.S. Natl.Congress on Applied Mechanic held at Ann Arbor,Mich.in 1954,ASME,New York,1955,389-406
[42]曲庆璋.弹性板理论.北京:人民交通出版社,2000,132-133
[43]沈浦生.楼盖结构设计原理.北京:科学出版社,2003,128-145
[44]过镇海.钢筋混凝土原理.北京:清华大学出版社,1999,225-236
[45]高巍.现浇钢筋混凝土有梁双向空心板的试验研究:[东南大学硕士学位论文] .江苏:东南大学,2004,68-70
[46]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,1993,72-78
[47]R.Szilard 著,陈太平,戈鹤翔等.板的理论和分析—经典法和数值法.北京:中国铁道出版社,1984,112-125
[2]Cook J P. Composite Structure Methods. New york:McGraw-Hill Book Company inc, 1976, 121-150
[3]蒋森荣.预应力钢筋混凝土结构学.北京:建筑工程出版社,1959,56-78
[4]原湖北建筑工业学院等编译.装配整体式结构编译文集.1978,122-158
[5]原西德混凝土和钢筋混凝土结构设计和施工规范.1972,345-450
[6]中国建筑标准设计研究所译文.由预应力薄板和后浇混凝土组成的连续板.1982,1-16
[7]法国建筑科学技术中心.用预制薄板和现浇混凝土层组成的空心楼板的技术规定.1979,15-26
[8]肖龙.钢筋混凝土结构施工合理化的半预制结构体系.建筑技术开发,1994,21(4):34-53
[9]朱伯龙等.装配整体式密肋楼板的理论及试验研究.上海:同济大学科学技术情报站,1961,56-78
[10]天津大学,同济大学,南京工学院.钢筋混凝土结构(下).北京:中国建筑工业出版社,1980,329-340
[11]钢筋混凝土结构设计规范 TJ10-74.北京:中国建筑工业出版社,1974,45-48
[12]国家建委建筑科学研究所.冷拔低碳钢铰线在多层厂房结构中的应用.北京: 国家建委建筑科学研究所.1977,3-18
[13]周晓芬,朱丽松,黄海等.高效预应力混凝土叠合结构在高层建筑中的应用.建筑结构,1997,1(10):8-11
[14]北京有色冶金设计院.装配整体式多层厂房设计参考资料.土建技术,1977,10(39):10-15
[15]轻工业部第一设计院.多层厂房装配整体结构设计,1974,22-31
[16]四川省电力设计院.叠合结构在小火电工程中的应用.成都:四川省电力设计院,1985,1-54
[17]全国通用建筑标准设计.预应力混凝土叠合板 JSJT-93.1987,8-18
[18]ACI—ASCE Committee 333. Tentative Recommendations for Design of Composite Beams and Girder for Biuldings.J.of ACI,1960,57(12):609-628
[19]Douglas, Mechenry el. Development of continuity in precast prestressed construction. sixth congress of international Association for Bridge andStructural engineering,1961,87-96
[20]Zoltán V. Nagy1,István Szatmári2. Composite Slab Design. 2nd Int. PhD Symposium in Civil Engineering 1998 Budapest,1998,16(4):25-30
[21]A.Y.Elghazouli,B.A.Izzuddin.Realistic Modeling of Composite and Reinforced Concrete Floor Slabs under Extreme Loading. II: Verification and Application. Journal of Structural Engineering,2004,130(12):1985-1996
[22]Clinton O.Rex,W.Samuel Easterling.Behavior and Modeling of Reinforced Composite Slab in Tension. Journal of Structural Engineering, 2000,126(7):764-771
[23]混凝土结构设计规范 GBJ50010-2002.北京:中国建筑工业出版社,2002,41-150
[24]石玲,贺采旭.两跨预应力混凝土连续叠合板的弯矩调幅值的试验研究.武汉水利电力学院学报,1991,37(3):102-135
[25]田安国.冷轧带肋钢筋混凝土叠合板的试验研究.建筑结构,2000,12(1):15-18
[26]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,2001,13(5):54-56
[27]聂建国,陈必磊,陈戈等.钢筋混凝土叠合板的试验研究.工业建筑,2003,13(12):11-14
[28]杨建水.钢筋混凝土双向叠合板抗剪强度的极限分析.郑州工业大学学报,1997,7(3):72-76
[29]王晓锋.单向预应力双向叠合楼盖试验研究:[中国建筑科学研究院硕士学位论文].北京:中国建筑科学研究院,2003,39-46
[30]徐天爽,徐有邻.双向叠合板拼缝传力性能的试验研究.建筑科学,2003,19(6):11-13
[31]罗健雄,赵更歧,张雁华.高效预应力双向叠合楼盖的特点及工程应用.郑州工业大学学报,2001,19(4):71-73
[32]尚守平,吴方伯,张毛心等.PK 预应力混凝土叠合板.湖南大学结构工程研究所,2003,3-31
[33]郑伦存.PK 预应力混凝土叠合板的试验研究与应用:[湖南大学硕士学位论文].长沙:湖南大学,2003,8-20
[34]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,2001,104-111
[35]吴晓鹏.现浇预应力空心板梁体系受力特性研究:[浙江大学硕士学位论文].浙江:浙江大学,2005,18-24
[36]Bathe K J. Finite Element Procedures in Engineering Analysis. Prentice-Hall, Inc,1977,44-68
[37]Zienkiewicz O C, Morgan K. Finite Elements and Approximation. John Wiley &Sons, Inc,1983,23-59
[38]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
[39]R.Szilard 著,陈太平等译.板的理论和分析.北京:中国铁道出版社出版,1984,284-301
[40]S.Timoshenko,S.Woinowsky-Krieger.Theory of Plates and Shells(Second Edition).New York:McGraw-Hill Book Company inc,1958,389-404
[41]Fletcher,H.J.,and Thorne,C.J..Bending of Thin Rectangular Plates,Proceeding of the second U.S. Natl.Congress on Applied Mechanic held at Ann Arbor,Mich.in 1954,ASME,New York,1955,389-406
[42]曲庆璋.弹性板理论.北京:人民交通出版社,2000,132-133
[43]沈浦生.楼盖结构设计原理.北京:科学出版社,2003,128-145
[44]过镇海.钢筋混凝土原理.北京:清华大学出版社,1999,225-236
[45]高巍.现浇钢筋混凝土有梁双向空心板的试验研究:[东南大学硕士学位论文] .江苏:东南大学,2004,68-70
[46]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,1993,72-78
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