内置H型钢预应力混凝土简支组合梁斜截面受剪试验研究
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摘要
我国的建筑工程已由“新建为主”逐渐过渡到“新建与改建并重”的阶段。对既有房屋套建增层改造已成为当今土木工程界的热点之一。由于普遍要求套建增层时,既有房屋须维持正常运营,这就要求在套建结构设计及施工过程中避免将增层的荷载传给既有房屋的屋盖。
预应力混凝土技术是对混凝土结构的技术革命。用现代概念和方法设计的高效预应力混凝土,可以有效的改善结构使用阶段性能(如控制裂缝开展和消除结构挠度等),提高受剪承载力和疲劳强度,改善受荷后的恢复力性能,充分利用高强度钢材,有效调整结构内力等。内置H型钢混凝土组合结构是实现套建增层的结构设计形式之一。
内置H型钢预应力混凝土组合梁是指在型钢上、下翼缘之间合理布置并张拉一定数量的预应力筋，在型钢外围绑扎非预应力钢筋骨架并浇筑混凝土而形成的由混凝土、型钢、预应力筋及非预应力钢筋骨架组合而成的梁。这类梁兼具钢梁与混凝土梁的双重优点,有广阔的应用空间。在充分查阅了大量的参考文献后,了解了型钢混凝土结构在国内外的研究现状,对比了预应力型钢混凝土的结构特点,明确了其研究及应用价值。这种结构形式可以更好地完成大跨、重载条件下的受力性能。
内置H型钢预应力混凝土组合梁在工程中常出现小剪跨比受剪情况,这类构件的受剪性能研究尚未见报导。本文从受剪理论出发,分析了钢筋混凝土、预应力钢筋混凝土、型钢混凝土及预应力型钢混凝土组合构件的受剪机理、斜截面的主要破坏形式以及剪跨比、混凝土强度等级等关键参数对截面承载力的影响。针对问题完成了5根这类简支梁小剪跨比的受剪试验,积累了试验数据。
基于这类梁的抗剪试验及机理分析,考察了加载条件下的变形发展情况,提出了这类梁的受剪承载力公式。
It has a gradual transition to a new phase of equal importance with new-built and reconstruction compared with new-built mainly before of construction engineering in our country.The reconstruction technique using outer-jacketing structure for adding storie around the existing building has become one of the hot issues of civil engineering. The existing building need works as usual which requried to avoid the added load transferred to the roof of the existing building during reconstructure.
Prestressed concrete technology is a technological revolution to concrete structure.High efficient prestressed concrete which designed by modern concepts and methods, can effectively improve the structure performance of using stage (such as controlling development of crack and eliminating deflection of structure, etc.), raise the shear and fatigue strength, improve resilience after load, make full use of high strength steel and adjust internal force of structure effectively. Prestressed composite concrete beam with encased H-steel is one of the structural design forms for the outer-jacketing structure for adding story.
Prestressed composite concrete beam with encased H-steel is constituted with the skeleton combination of concrete,steel,prestressed tendons and non-prestressed reinforcement. A number of prestressed tendons are arranged rationally between the upper and lower flange of the steel. And lash non-prestressed reinforcement frame in the steel periphery and poured concrete.Such beams has both advantages of the steel beam and concrete beam,and there is a broad application space. After read a large number of references, we understand the research of concrete structures encased steel at home and abroad, compared the structural characteristics of prestressed concrete encased steel, clear of the value of the research and application. This structure is better for the conditions of the performance which is large-span, and heavy force.
It often appear small shear span ratio of shear in the engineering of prestressed concrete composite beams encased steel. Research of these components has not been reported. In this paper,base on the shear theory,we analysis the shear mechanism of reinforced concrete,prestressed reinforced concrete, concrete encased steel and prestressed concrete composite member encased steel. Discussed the main damage form of oblique section and the influence on section bearing capacity which originated from key parameters such as shear span ratio and concrete strength grade.In order to solve these problems the we completed shear tests of five simple beams with small shear span ratio, and accumulated test data.
Based on shear tests of these beams and mechanism analysis, we studied the development of deformation under load and made the shear strength formula of these beams.
预应力混凝土技术是对混凝土结构的技术革命。用现代概念和方法设计的高效预应力混凝土,可以有效的改善结构使用阶段性能(如控制裂缝开展和消除结构挠度等),提高受剪承载力和疲劳强度,改善受荷后的恢复力性能,充分利用高强度钢材,有效调整结构内力等。内置H型钢混凝土组合结构是实现套建增层的结构设计形式之一。
内置H型钢预应力混凝土组合梁是指在型钢上、下翼缘之间合理布置并张拉一定数量的预应力筋，在型钢外围绑扎非预应力钢筋骨架并浇筑混凝土而形成的由混凝土、型钢、预应力筋及非预应力钢筋骨架组合而成的梁。这类梁兼具钢梁与混凝土梁的双重优点,有广阔的应用空间。在充分查阅了大量的参考文献后,了解了型钢混凝土结构在国内外的研究现状,对比了预应力型钢混凝土的结构特点,明确了其研究及应用价值。这种结构形式可以更好地完成大跨、重载条件下的受力性能。
内置H型钢预应力混凝土组合梁在工程中常出现小剪跨比受剪情况,这类构件的受剪性能研究尚未见报导。本文从受剪理论出发,分析了钢筋混凝土、预应力钢筋混凝土、型钢混凝土及预应力型钢混凝土组合构件的受剪机理、斜截面的主要破坏形式以及剪跨比、混凝土强度等级等关键参数对截面承载力的影响。针对问题完成了5根这类简支梁小剪跨比的受剪试验,积累了试验数据。
基于这类梁的抗剪试验及机理分析,考察了加载条件下的变形发展情况,提出了这类梁的受剪承载力公式。
It has a gradual transition to a new phase of equal importance with new-built and reconstruction compared with new-built mainly before of construction engineering in our country.The reconstruction technique using outer-jacketing structure for adding storie around the existing building has become one of the hot issues of civil engineering. The existing building need works as usual which requried to avoid the added load transferred to the roof of the existing building during reconstructure.
Prestressed concrete technology is a technological revolution to concrete structure.High efficient prestressed concrete which designed by modern concepts and methods, can effectively improve the structure performance of using stage (such as controlling development of crack and eliminating deflection of structure, etc.), raise the shear and fatigue strength, improve resilience after load, make full use of high strength steel and adjust internal force of structure effectively. Prestressed composite concrete beam with encased H-steel is one of the structural design forms for the outer-jacketing structure for adding story.
Prestressed composite concrete beam with encased H-steel is constituted with the skeleton combination of concrete,steel,prestressed tendons and non-prestressed reinforcement. A number of prestressed tendons are arranged rationally between the upper and lower flange of the steel. And lash non-prestressed reinforcement frame in the steel periphery and poured concrete.Such beams has both advantages of the steel beam and concrete beam,and there is a broad application space. After read a large number of references, we understand the research of concrete structures encased steel at home and abroad, compared the structural characteristics of prestressed concrete encased steel, clear of the value of the research and application. This structure is better for the conditions of the performance which is large-span, and heavy force.
It often appear small shear span ratio of shear in the engineering of prestressed concrete composite beams encased steel. Research of these components has not been reported. In this paper,base on the shear theory,we analysis the shear mechanism of reinforced concrete,prestressed reinforced concrete, concrete encased steel and prestressed concrete composite member encased steel. Discussed the main damage form of oblique section and the influence on section bearing capacity which originated from key parameters such as shear span ratio and concrete strength grade.In order to solve these problems the we completed shear tests of five simple beams with small shear span ratio, and accumulated test data.
Based on shear tests of these beams and mechanism analysis, we studied the development of deformation under load and made the shear strength formula of these beams.
引文
[1]傅传国娄宇.预应力型钢混凝土结构试验研究及工程应用.科学出版社,2007.
[2]刘军进.预应力钢骨混凝土梁的理论分析和试验研究.东南大学硕士学位论文.1999：44-52
[3]李国平.预应力混凝土结构设计原理.人民交通出版社.2000.
[4]徐杰傅传国.预应力型钢混凝土结构研究与应用.第八届现代结构工程学术研讨会.
[5]刘鲲鹏李卫东.浅谈预应力型钢混凝土结构的发展概况.科技创新导报,2009,12.
[6]梁晶.预应力型钢混凝土梁理论分析和计算方法研究.西安建筑科技大学硕士学位论文,2006.
[7]霍达.钢与混凝土组合结构设计原理.科学出版社,2005.
[8]赵鸿铁.钢与混凝土组合结构[M].科学出版社,2001.
[9]薛建阳.钢与混凝土组合结构.华中科技大学出版社.2007.
[10]范涛.浅述型钢混凝土结构的特点及应用.四川建筑科学研究.2004.4：38
[11]郑之俊.国内外关于型钢混凝土结构的研究与应用.滁州职业技术学院学报.2005，(3)：58-59
[12]刘维亚.钢与混凝土组合结构理论与实践中国建筑工业出版社,2008.
[13]赵鸿铁.组合结构设计原理.高等教育出版社,2005
[14]Nutan Kumar Subedi, Paul Stuart Baglin. Ultimate load analysis of plate reinforced concrete beams. Engineering Structures 2001:1068-1079
[15]Riyadh A. Hindi, Midhat A. Hassan. Shear capacity of diagonally reinforced coupling beams. Engineering Structures 2004:1437-1446
[16]Bimal Babu Adhikary, Hiroshi Mutsuyoshi, Masashi Sano. Shear strengthening of reinforced concrete beams using steel plates bonded on beam web:experiments and analysis. Construction and Building Materials.2000:237-244
[17]N.K. Subedi, P.S. Baglin. Plate reinforced concrete beams:experimental work. Engineering Structures 1999:232-254
[18]R.A. Barnes, P.S. Baglin, G.C. Mays, N.K. Subedi. External steel plate systems for the shear strengthening of reinforced concrete beams. Engineering Structures 2001:1162-1176
[19]Sinan Altin, Ozgur Anil, M. Emin Kara. Improving shear capacity of existing RC beams using external bonding of steel plates.Engineering Structures 2005:781-791
[20]Wan-Shin Park, Hyun-Do Yun. Bearing strength of steel coupling beam connections embedded reinforced concrete shear walls. Engineering Structures 2006:1319-1334
[21]R.K.L. Su, Y. Zhu. Experimental and numerical studies of external steel plate strengthened reinforced concrete coupling beams. Engineering Structures 2005:1537——1550
[22]Joseph J. Kallolil, Sekhar K. Chakrabarti, Ramesh C. MishrA.Experimental investigation of embedded steel plates in reinforced concrete structures. Engineering Structures 1998: 105-112
[23]Neal S. Berke, Maria C. Hicks. Predicting long-term durability of steel reinforced concrete with calcium nitrite corrosion inhibitor. Cement & Concrete Composites 2004:191-198
[24]B. Uy. Local and post-local buckling of concrete filled steel welded box columns. Journal of Constructional Steel Research.1998:47-72
[25]Z. Vrcelj, B. Uy.Strength of slender concrete-filled steel box columns incorporating local buckling Journal of Constructional Steel Research 2002:275-300
[26]S. Morino. Recent developments in hybrid structures in Japan-research, design and construction:Engineering Structures,1998
[27]Minoru Wakabayash.Composite Construction in Steel and Concrete. New York Noy Hamphire,1987
[28]Editorial. Mechanics of composite materials and structures. Computers and Structures 2000
[29]Theodore V. Galambos. Recent research and design developments in steel and composite steel-concrete structures in USA.Journal of Constructional Steel Research 2000:289-303
[30]K.F. Chung a, R.M. Lawson. Simplified design of composite beams with large web openings to Eurocode 4. Journal of Constructional Steel Research 2001:135-163
[31]J.Y. Richard Liew, T.H. Teo, N.E. Shanmugam, C.H. Yu.Testing of steel-concrete composite connections and appraisal of results.Journal of Constructional Steel Research 2000:117-150
[32]Jianguo Nie, Yan Xiao, Lin Chen.Experimental studies on shear strength of steel-concrete composite beams.Journal of Structural Engineering 2004:1206-1213
[33]Evangelos J. Sapountzakis, John T. Katsikadelis.Interface forces in composite steel±concrete structure.International Journal of Solids and Structures 2000:4455-4472
[34]Bimal Babu Adhikary,Hiroshi Mutsuyoshi.Prediction of shear strength of steel fiber RC beams using neural networks[J].Construction and Building Materials,2006,20, (9):810-811
[35]LU Z R, LAW S S. Identification of prestress force from measured structural responses[J]. Mechanical Systems and Signal Processing,2006,20 (8):2186-2199
[36]日本建築學會.铁骨铁筋コンクリ—ト構造計算規準同解說.日本国东京都：丸善株式会社,1987
[37]日本建筑学会.钢骨钢筋混凝土结构计算标准及解说.冯乃谦、叶列平等译.北京：能源出版社,1998
[38]钢骨混凝土结构设计规程(YB9082-97).冶金工业出版社,1998.
[39]型钢混凝土组合结构技术规程(JGJ138-2001).中国建筑工业出版社,2001.
[40]型钢混凝土组合结构构造(04SG523).中国建筑工业出版社,2004.
[41]钢骨混凝土结构设计规程(YB9082-2006).冶金工业出版社,2006.
[42]张誉.混凝土结构基本原理.中国建筑出版社,2002.
[43]沈蒲生.混凝土结构设计原理.高等教育出版社,2007.
[44]何淅淅.混凝土结构设计基本原理.科学出版社,2005.
[45]薛伟辰.现在预应力结构设计.中国建筑工业出版社,2002.
[46]王广连刘莉.现代预应力结构设计.哈尔滨工业大学出版社,2008.
[47]叶列平,方鄂华,赵树红.钢骨混凝土构件的受剪承载力计算.建筑结构.1999，(7)：17-21
[48]叶列平,方鄂华.钢骨混凝土梁、柱构件受剪承载力计算.建筑结构.1999，(11)：59-62
[49]陈丽华,李爱群,赵玲.型钢混凝土构件受剪承载力计算公式的比较.建筑结构.2005，(1)：32-34
[50]方虎生,韩小雷,张元坤.钢骨混凝土梁承载力计算方法的比较.广东土木与建筑.2003,(12)：3-5
[51]李峰秦士红.预应力钢骨混凝土梁承载能力试验研究.重庆大学硕士学位论文,2007.
[52]袁志立.预应力型钢混凝土组合梁非线性有限元分析.同济大学硕士学位论文,2005.
[53]陆平.预应力钢骨混凝土梁试验研究及工程实践.同济大学硕士学位论文,2004.
[54]混凝土结构设计规范(GB50010-2002).中国建筑工业出版社,2002.
[55]自密实高性能混凝土设计与施工指南(第二次送审稿).2005.5.
[2]刘军进.预应力钢骨混凝土梁的理论分析和试验研究.东南大学硕士学位论文.1999：44-52
[3]李国平.预应力混凝土结构设计原理.人民交通出版社.2000.
[4]徐杰傅传国.预应力型钢混凝土结构研究与应用.第八届现代结构工程学术研讨会.
[5]刘鲲鹏李卫东.浅谈预应力型钢混凝土结构的发展概况.科技创新导报,2009,12.
[6]梁晶.预应力型钢混凝土梁理论分析和计算方法研究.西安建筑科技大学硕士学位论文,2006.
[7]霍达.钢与混凝土组合结构设计原理.科学出版社,2005.
[8]赵鸿铁.钢与混凝土组合结构[M].科学出版社,2001.
[9]薛建阳.钢与混凝土组合结构.华中科技大学出版社.2007.
[10]范涛.浅述型钢混凝土结构的特点及应用.四川建筑科学研究.2004.4：38
[11]郑之俊.国内外关于型钢混凝土结构的研究与应用.滁州职业技术学院学报.2005，(3)：58-59
[12]刘维亚.钢与混凝土组合结构理论与实践中国建筑工业出版社,2008.
[13]赵鸿铁.组合结构设计原理.高等教育出版社,2005
[14]Nutan Kumar Subedi, Paul Stuart Baglin. Ultimate load analysis of plate reinforced concrete beams. Engineering Structures 2001:1068-1079
[15]Riyadh A. Hindi, Midhat A. Hassan. Shear capacity of diagonally reinforced coupling beams. Engineering Structures 2004:1437-1446
[16]Bimal Babu Adhikary, Hiroshi Mutsuyoshi, Masashi Sano. Shear strengthening of reinforced concrete beams using steel plates bonded on beam web:experiments and analysis. Construction and Building Materials.2000:237-244
[17]N.K. Subedi, P.S. Baglin. Plate reinforced concrete beams:experimental work. Engineering Structures 1999:232-254
[18]R.A. Barnes, P.S. Baglin, G.C. Mays, N.K. Subedi. External steel plate systems for the shear strengthening of reinforced concrete beams. Engineering Structures 2001:1162-1176
[19]Sinan Altin, Ozgur Anil, M. Emin Kara. Improving shear capacity of existing RC beams using external bonding of steel plates.Engineering Structures 2005:781-791
[20]Wan-Shin Park, Hyun-Do Yun. Bearing strength of steel coupling beam connections embedded reinforced concrete shear walls. Engineering Structures 2006:1319-1334
[21]R.K.L. Su, Y. Zhu. Experimental and numerical studies of external steel plate strengthened reinforced concrete coupling beams. Engineering Structures 2005:1537——1550
[22]Joseph J. Kallolil, Sekhar K. Chakrabarti, Ramesh C. MishrA.Experimental investigation of embedded steel plates in reinforced concrete structures. Engineering Structures 1998: 105-112
[23]Neal S. Berke, Maria C. Hicks. Predicting long-term durability of steel reinforced concrete with calcium nitrite corrosion inhibitor. Cement & Concrete Composites 2004:191-198
[24]B. Uy. Local and post-local buckling of concrete filled steel welded box columns. Journal of Constructional Steel Research.1998:47-72
[25]Z. Vrcelj, B. Uy.Strength of slender concrete-filled steel box columns incorporating local buckling Journal of Constructional Steel Research 2002:275-300
[26]S. Morino. Recent developments in hybrid structures in Japan-research, design and construction:Engineering Structures,1998
[27]Minoru Wakabayash.Composite Construction in Steel and Concrete. New York Noy Hamphire,1987
[28]Editorial. Mechanics of composite materials and structures. Computers and Structures 2000
[29]Theodore V. Galambos. Recent research and design developments in steel and composite steel-concrete structures in USA.Journal of Constructional Steel Research 2000:289-303
[30]K.F. Chung a, R.M. Lawson. Simplified design of composite beams with large web openings to Eurocode 4. Journal of Constructional Steel Research 2001:135-163
[31]J.Y. Richard Liew, T.H. Teo, N.E. Shanmugam, C.H. Yu.Testing of steel-concrete composite connections and appraisal of results.Journal of Constructional Steel Research 2000:117-150
[32]Jianguo Nie, Yan Xiao, Lin Chen.Experimental studies on shear strength of steel-concrete composite beams.Journal of Structural Engineering 2004:1206-1213
[33]Evangelos J. Sapountzakis, John T. Katsikadelis.Interface forces in composite steel±concrete structure.International Journal of Solids and Structures 2000:4455-4472
[34]Bimal Babu Adhikary,Hiroshi Mutsuyoshi.Prediction of shear strength of steel fiber RC beams using neural networks[J].Construction and Building Materials,2006,20, (9):810-811
[35]LU Z R, LAW S S. Identification of prestress force from measured structural responses[J]. Mechanical Systems and Signal Processing,2006,20 (8):2186-2199
[36]日本建築學會.铁骨铁筋コンクリ—ト構造計算規準同解說.日本国东京都：丸善株式会社,1987
[37]日本建筑学会.钢骨钢筋混凝土结构计算标准及解说.冯乃谦、叶列平等译.北京：能源出版社,1998
[38]钢骨混凝土结构设计规程(YB9082-97).冶金工业出版社,1998.
[39]型钢混凝土组合结构技术规程(JGJ138-2001).中国建筑工业出版社,2001.
[40]型钢混凝土组合结构构造(04SG523).中国建筑工业出版社,2004.
[41]钢骨混凝土结构设计规程(YB9082-2006).冶金工业出版社,2006.
[42]张誉.混凝土结构基本原理.中国建筑出版社,2002.
[43]沈蒲生.混凝土结构设计原理.高等教育出版社,2007.
[44]何淅淅.混凝土结构设计基本原理.科学出版社,2005.
[45]薛伟辰.现在预应力结构设计.中国建筑工业出版社,2002.
[46]王广连刘莉.现代预应力结构设计.哈尔滨工业大学出版社,2008.
[47]叶列平,方鄂华,赵树红.钢骨混凝土构件的受剪承载力计算.建筑结构.1999，(7)：17-21
[48]叶列平,方鄂华.钢骨混凝土梁、柱构件受剪承载力计算.建筑结构.1999，(11)：59-62
[49]陈丽华,李爱群,赵玲.型钢混凝土构件受剪承载力计算公式的比较.建筑结构.2005，(1)：32-34
[50]方虎生,韩小雷,张元坤.钢骨混凝土梁承载力计算方法的比较.广东土木与建筑.2003,(12)：3-5
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