方矩管混凝土柱计算理论分析及隔板贯通式节点研究
|
摘要
方矩管混凝土结构(包含方钢管混凝土结构和矩形钢管混凝土结构)既有钢结构的塑性变形能力强、延性好、抗震性能优良等特性,又克服了圆钢管混凝土结构由于截面形状特殊所带来的设计、施工及使用上的不便,成为住宅钢结构发展的一个主要方向。但目前方矩管混凝土结构在我国的应用较少,相关的理论还不完备,缺乏相应的有关节点的规范、规程,使得方矩管混凝土结构难以得到推广。
为配合方矩管混凝土结构的推广和方矩管混凝土结构节点规程的编制,本文分析了可以用于方矩管混凝土柱计算的三种理论,依据理论分析和钢管混凝土超声波检测的试验数据,提出了方矩管混凝土柱计算中叠加原理的应用论据。此外,本文分析了目前我国方矩管混凝土柱计算理论研究的现状,指出了目前需要解决的一大难点,即轴压力分配系数问题。然后介绍了我国现有理论中两种有关轴压力分配系数的规定,将它们分别与实际情况进行了比较。最后,在变形协调条件下,推导了一种全新的轴压力分配方法,并给出相关数据,证明了新理论的合理性。在分析同样采用叠加原理的日本方矩管混凝土柱计算理论的基础上,按照计算简洁、概念明确和安全可靠的原则,确定了方矩管混凝土柱的计算公式。
本文简要介绍了我国目前方矩管混凝土柱与H型钢梁连接常见的节点形式,从日本的梁贯通式节点演化提出了隔板贯通式节点。设计了该种节点的静力拉伸试验,制作试件10个,其中1个为空钢管试件用来于其它试件对比分析。试验前,进行了钢材和混凝土的材性试验。在确定梁翼缘与隔板连接处的过渡圆弧半径时,经ANSYS分析后,定为25mm。此外,采用理论公式计算了各试件的承载力。试验后,将试验结果与理论计算结果相比较,证明了理论计算方法的可靠性。根据试验中应变测量的结果,分析了该种节点应力分布状况。
为了分析隔板贯通式节点的抗震性能,设计了该种节点的拟静力试验。试验共有试件3个,其中1个为空钢管试件,用于对比分析。介绍了各构件的破坏过程及特征。通过分析试验得到的滞回曲线等数据,对节点的承载力、延性、耗能能力、强度退化等指标进行了详细的分析与比较。分析结果表明,该种节点的抗震性能优良,具有良好的延性和耗能能力。
最后,提出了方矩管混凝土结构中若干有待进一步深入研究的问题,并对方矩管混凝土结构的发展形势进行了展望。
Concrete Filled Rectangular and Square Steel Tubular Column (CFRC) structurehas a good ductility, plasticity, anti-earthquake, and so on. While concrete-filledcircular tubular structure takes on a lot of inconvenience in engineering design,construction and application because of it's particular section. So CFRC structurebecomes the representation of multi-story steel-frame structures. But at present, it isseldom used in China, just because of the less of corresponding codes and regulationsabout joints, and the less of related theories. This kind of structure is difficult to bepopularized.
To coordinate the expansion of CFRC structure and the implementation of newdesign code, the three main theory in calculating concrete filled rectangular andsquare steel tube are discussed, together by the experiment results of supersonic flawdetecting, the superposition theory is verified to be suitable for the calculation ofconcrete filled rectangular and square steel tube columns. This paper analyses thestatus of research on calculation theory of CFRC in China and pointed out a problemneeding to be settled, namely the problem about distributing coefficients of axialpressure. Then this paper introduces two methods about distributing coefficients ofaxial pressure in CFRC, and compared them with facts. Lastly according tocorresponding distortion the author deduces a new kind of method about distributingcoefficients of axial pressure, and presents some correlated data to prove therationality of this new method. The calculation method adopted by Japanese code isanalyzed, for it is also in the superposition theory. According to rules of simplecalculation, clear concept and reliable safe, the calculation method of concrete filledrectangular and square steel tube columns is suggested.
The state art of joints in CFRC structure is introduced firstly. Based onthrough-beam style joints in Japan we bring forward through-diagram style joints.Then the author designs a static experiment of this kind of joint. This experiment hasten specimens, one of whose column is hollow tube. The specimen whose column ishollow tube is used to compare with other specimens. Before this experiment, wehave carry on the material experiments of steel and concrete. Based on analysis inANSYS, we adopt that the radius of the connection of beam and diagram is 25mm.Moreover we calculate the load bearing capacity of the tested joints in theory. After
the experiment, this paper introduces the experiment of this kind of joint under staticloading and contrasts the result of this experiment to the result in theory in order totestify the reliability of calculation theory. According to the results of strain gauges,this paper analysis the strain distributing status of this kind of joint.In order to analysis the anti-earthquake ability of this kind of joint, the authordesigns a quasi-static experiment of this kind of joint. The experiment has threespecimens, one of whose column is hollow tube. The specimen whose column is hollowtube is used to compare with other specimens. This paper describes the failure process andfeature of each specimen. Based on the data got from the experiment such asmeasured hysteretic hoops, this paper makes a thorough comparison and analysis onthe index of seismic behavior such as load bearing capacity of the joints, ductility,energy dissipation, strength degeneration. The analysis results show that theconstruction details of diagram-through style joint are simple and reasonable and thisnew joint has a good seismic behavior.At last, the author puts forward several problems of CFRSST structures to beresearched more deeply and makes an expectation of CFRSST structures.
为配合方矩管混凝土结构的推广和方矩管混凝土结构节点规程的编制,本文分析了可以用于方矩管混凝土柱计算的三种理论,依据理论分析和钢管混凝土超声波检测的试验数据,提出了方矩管混凝土柱计算中叠加原理的应用论据。此外,本文分析了目前我国方矩管混凝土柱计算理论研究的现状,指出了目前需要解决的一大难点,即轴压力分配系数问题。然后介绍了我国现有理论中两种有关轴压力分配系数的规定,将它们分别与实际情况进行了比较。最后,在变形协调条件下,推导了一种全新的轴压力分配方法,并给出相关数据,证明了新理论的合理性。在分析同样采用叠加原理的日本方矩管混凝土柱计算理论的基础上,按照计算简洁、概念明确和安全可靠的原则,确定了方矩管混凝土柱的计算公式。
本文简要介绍了我国目前方矩管混凝土柱与H型钢梁连接常见的节点形式,从日本的梁贯通式节点演化提出了隔板贯通式节点。设计了该种节点的静力拉伸试验,制作试件10个,其中1个为空钢管试件用来于其它试件对比分析。试验前,进行了钢材和混凝土的材性试验。在确定梁翼缘与隔板连接处的过渡圆弧半径时,经ANSYS分析后,定为25mm。此外,采用理论公式计算了各试件的承载力。试验后,将试验结果与理论计算结果相比较,证明了理论计算方法的可靠性。根据试验中应变测量的结果,分析了该种节点应力分布状况。
为了分析隔板贯通式节点的抗震性能,设计了该种节点的拟静力试验。试验共有试件3个,其中1个为空钢管试件,用于对比分析。介绍了各构件的破坏过程及特征。通过分析试验得到的滞回曲线等数据,对节点的承载力、延性、耗能能力、强度退化等指标进行了详细的分析与比较。分析结果表明,该种节点的抗震性能优良,具有良好的延性和耗能能力。
最后,提出了方矩管混凝土结构中若干有待进一步深入研究的问题,并对方矩管混凝土结构的发展形势进行了展望。
Concrete Filled Rectangular and Square Steel Tubular Column (CFRC) structurehas a good ductility, plasticity, anti-earthquake, and so on. While concrete-filledcircular tubular structure takes on a lot of inconvenience in engineering design,construction and application because of it's particular section. So CFRC structurebecomes the representation of multi-story steel-frame structures. But at present, it isseldom used in China, just because of the less of corresponding codes and regulationsabout joints, and the less of related theories. This kind of structure is difficult to bepopularized.
To coordinate the expansion of CFRC structure and the implementation of newdesign code, the three main theory in calculating concrete filled rectangular andsquare steel tube are discussed, together by the experiment results of supersonic flawdetecting, the superposition theory is verified to be suitable for the calculation ofconcrete filled rectangular and square steel tube columns. This paper analyses thestatus of research on calculation theory of CFRC in China and pointed out a problemneeding to be settled, namely the problem about distributing coefficients of axialpressure. Then this paper introduces two methods about distributing coefficients ofaxial pressure in CFRC, and compared them with facts. Lastly according tocorresponding distortion the author deduces a new kind of method about distributingcoefficients of axial pressure, and presents some correlated data to prove therationality of this new method. The calculation method adopted by Japanese code isanalyzed, for it is also in the superposition theory. According to rules of simplecalculation, clear concept and reliable safe, the calculation method of concrete filledrectangular and square steel tube columns is suggested.
The state art of joints in CFRC structure is introduced firstly. Based onthrough-beam style joints in Japan we bring forward through-diagram style joints.Then the author designs a static experiment of this kind of joint. This experiment hasten specimens, one of whose column is hollow tube. The specimen whose column ishollow tube is used to compare with other specimens. Before this experiment, wehave carry on the material experiments of steel and concrete. Based on analysis inANSYS, we adopt that the radius of the connection of beam and diagram is 25mm.Moreover we calculate the load bearing capacity of the tested joints in theory. After
the experiment, this paper introduces the experiment of this kind of joint under staticloading and contrasts the result of this experiment to the result in theory in order totestify the reliability of calculation theory. According to the results of strain gauges,this paper analysis the strain distributing status of this kind of joint.In order to analysis the anti-earthquake ability of this kind of joint, the authordesigns a quasi-static experiment of this kind of joint. The experiment has threespecimens, one of whose column is hollow tube. The specimen whose column is hollowtube is used to compare with other specimens. This paper describes the failure process andfeature of each specimen. Based on the data got from the experiment such asmeasured hysteretic hoops, this paper makes a thorough comparison and analysis onthe index of seismic behavior such as load bearing capacity of the joints, ductility,energy dissipation, strength degeneration. The analysis results show that theconstruction details of diagram-through style joint are simple and reasonable and thisnew joint has a good seismic behavior.At last, the author puts forward several problems of CFRSST structures to beresearched more deeply and makes an expectation of CFRSST structures.
引文
[1] 韩林海. 钢管混凝土结构,科学出版社,2000
[2] 潘友光,钟善桐. 钢管混凝土的轴压本构关系(上),建筑结构学报,1990.11(2)10-20
[3] 潘友光,钟善桐. 钢管混凝土的轴压本构关系(下),建筑结构学报,1990.11(4)36-40
[4] 钟善桐. 钢管混凝土结构,哈尔滨,黑龙江科学技术出版社,1987
[5] JCJ01-89 钢管混凝土结构设计与施工规程. 上海,同济大学出版社,1989
[6] 中国工程建设标准化协会标准 CECS28:90 钢管混凝土结构设计与施工规程. 北京,中国计划出版社,1992
[7] 中华人民共和国国家经济贸易委员会 DL-5085T-1999 钢-混凝土组合结构设计规程.北京,中国电力出版社,1999
[8] GJB 战时军港抢修早强型钢-混凝土组合结构设计规程. 解放军总后勤部,2000
[9] Weizi Zhang, Bahram M. Shahrooz. Comparison between ACI and AISC for Concrete-Filled Tubular Columns,Journal of Structural Engineering,1999,125(11)1213-1223
[10] Composite structures / European Convention for Constructional Steelwork . London, New York, Construction Press,1981
[11] 钢骨钢筋混凝土结构计算标准及解说. 日本建筑学会著 冯乃谦等译,北京,原子能出版社,1998
[12] 蔡绍怀,现代钢管混凝土结构,人民交通出版社,2003
[13] 钢管混凝土结构设计与施工规程(CECS28:90),中国计划出版社,1992
[14] 矩形钢管混凝土结构技术规程(CECS159:2004)
[15] 上海市标准《高层建筑钢—混凝土结构设计规程》
[16] 天津市工程建设标准《天津市钢结构住宅设计规程》(DB29-57-2003)
[17] 福建省工程建设标准《钢管混凝土结构技术规程》(DBJ13-51-2003)
[18] 超声波法检测中小直径钢管砼方法的研究,天津市建筑科学研究院,2003
[19] 李树海、陈志华、王小盾等,矩形钢管混凝土柱计算,第二届全国现代结构工程会议论文集,安徽马鞍山,p647～653,2002
[20] 赵莉华,方钢管混凝土柱在钢结构住宅中的应用研究,天津大学硕士毕业论文,2002
[21] 矩形钢管混凝土结构设计中若干问题的研究,沈祖炎,第五界中日建筑结构技术交流会,西安,2004
[22] Chiaki MATSUI、Junichi SAKAI and Toko HITAKA. SRC Standards (2001 edition) and Tests of CFT Frames CFT Structures in Japan
[23] 王国周.钢结构原理与设计[M].北京:清华大学出版社,1993.
[24] 余勇,吕西林,田中清等.方钢管混凝土柱与钢梁连接的拉伸试验研究[J].结构工程师 1999,pp23-28.
[25] 吕西林, 李学平,余勇.方钢管混凝土柱与钢梁连接的设计方法[J].同济大学学报 2002,pp1-5.
[26] 徐永春,吕方.住宅钢结构体系梁柱节点性能研究[J].建筑技术开发2002,pp13-15.
[27] 周天华、何保康、陈国津等.方钢管混凝土柱与钢梁框架节点的抗震性能试验研究[J].建筑结构学报 2004,pp9-16.
[28] J. M. Ricles, M.ASCE;S. W. Peng2;Seismic Behavior of Composite Concrete Filled Steel Tube Column-Wide Flange Beam Moment Connections [J] Journal of Structural Engineering, Vol. 130, No. 2, February 1, 2004.
[29] Fujimoto et al.Behavior of beam-to-column connection of CFT column system under seismic force[C] Proceedings of 6th ASCCS international Conference on steel-concrete composite-structure, Los Angeles.
[2] 潘友光,钟善桐. 钢管混凝土的轴压本构关系(上),建筑结构学报,1990.11(2)10-20
[3] 潘友光,钟善桐. 钢管混凝土的轴压本构关系(下),建筑结构学报,1990.11(4)36-40
[4] 钟善桐. 钢管混凝土结构,哈尔滨,黑龙江科学技术出版社,1987
[5] JCJ01-89 钢管混凝土结构设计与施工规程. 上海,同济大学出版社,1989
[6] 中国工程建设标准化协会标准 CECS28:90 钢管混凝土结构设计与施工规程. 北京,中国计划出版社,1992
[7] 中华人民共和国国家经济贸易委员会 DL-5085T-1999 钢-混凝土组合结构设计规程.北京,中国电力出版社,1999
[8] GJB 战时军港抢修早强型钢-混凝土组合结构设计规程. 解放军总后勤部,2000
[9] Weizi Zhang, Bahram M. Shahrooz. Comparison between ACI and AISC for Concrete-Filled Tubular Columns,Journal of Structural Engineering,1999,125(11)1213-1223
[10] Composite structures / European Convention for Constructional Steelwork . London, New York, Construction Press,1981
[11] 钢骨钢筋混凝土结构计算标准及解说. 日本建筑学会著 冯乃谦等译,北京,原子能出版社,1998
[12] 蔡绍怀,现代钢管混凝土结构,人民交通出版社,2003
[13] 钢管混凝土结构设计与施工规程(CECS28:90),中国计划出版社,1992
[14] 矩形钢管混凝土结构技术规程(CECS159:2004)
[15] 上海市标准《高层建筑钢—混凝土结构设计规程》
[16] 天津市工程建设标准《天津市钢结构住宅设计规程》(DB29-57-2003)
[17] 福建省工程建设标准《钢管混凝土结构技术规程》(DBJ13-51-2003)
[18] 超声波法检测中小直径钢管砼方法的研究,天津市建筑科学研究院,2003
[19] 李树海、陈志华、王小盾等,矩形钢管混凝土柱计算,第二届全国现代结构工程会议论文集,安徽马鞍山,p647～653,2002
[20] 赵莉华,方钢管混凝土柱在钢结构住宅中的应用研究,天津大学硕士毕业论文,2002
[21] 矩形钢管混凝土结构设计中若干问题的研究,沈祖炎,第五界中日建筑结构技术交流会,西安,2004
[22] Chiaki MATSUI、Junichi SAKAI and Toko HITAKA. SRC Standards (2001 edition) and Tests of CFT Frames CFT Structures in Japan
[23] 王国周.钢结构原理与设计[M].北京:清华大学出版社,1993.
[24] 余勇,吕西林,田中清等.方钢管混凝土柱与钢梁连接的拉伸试验研究[J].结构工程师 1999,pp23-28.
[25] 吕西林, 李学平,余勇.方钢管混凝土柱与钢梁连接的设计方法[J].同济大学学报 2002,pp1-5.
[26] 徐永春,吕方.住宅钢结构体系梁柱节点性能研究[J].建筑技术开发2002,pp13-15.
[27] 周天华、何保康、陈国津等.方钢管混凝土柱与钢梁框架节点的抗震性能试验研究[J].建筑结构学报 2004,pp9-16.
[28] J. M. Ricles, M.ASCE;S. W. Peng2;Seismic Behavior of Composite Concrete Filled Steel Tube Column-Wide Flange Beam Moment Connections [J] Journal of Structural Engineering, Vol. 130, No. 2, February 1, 2004.
[29] Fujimoto et al.Behavior of beam-to-column connection of CFT column system under seismic force[C] Proceedings of 6th ASCCS international Conference on steel-concrete composite-structure, Los Angeles.