带水平加强层的高层筒体结构分析
|
摘要
水平加强层能够有效地减小高层筒体结构在侧向水平荷载作用下的侧向位移。但带水平加强层的高层筒体结构在地震作用下表现出了非常复杂的反应特性,加强层的设置不仅能引起结构竖向刚度的突变,引起结构内力的重分布;而且容易在加强层附近形成薄弱层。因此,对这类结构必须进行详尽而准确的分析研究,掌握其在侧向荷载作用下的反应规律以及结构在地震特别是大震下的塑性屈服机制;开展这方面的工作具有很强的实际意义。针对这些命题,本文完成以下几个方面的工作:
(1)通过多个算例计算,分析了水平加强层减小结构侧移的力学机理;分析了结构在设置加强层后引起的内力重分布现象。
(2)运用高层连续化分析方法,建立顶部带水平伸臂的框架-筒体结构侧移和内力的解析表达式,对结构进行了定量分析。
(3)通过多种加强层设置方案探讨了加强层对筒中筒结构外框筒柱剪力滞后效应的影响。
(4)进行了多种加强层结构的静力弹塑性分析,研究其在地震作用下的塑性屈服机制和延性性能;指出结构在大震作用下加强层附近会形成薄弱层,结构设计中必须采取相应的措施保证其变形能力。
(5)以超高层算例分析为基础,探讨了带水平加强层的高层筒体结构的动力反应,指出加强层引起的刚度、内力突变问题和引起的薄弱层,为设计提供一些建议。
Horizontal strengthened stories can effectively reduce the lateral displacement of the high-rise tubular structures under lateral load. But the high-rise tubular structures with horizontal strengthened stories displayed the extremely complex response characteristic under the earthquake action, the setting of Horizontal strengthened stories can not only cause the mutation of vertical stiffness, and the redistribution of the structural internal force, but also easily form weak stories nearby the horizontal strengthened stories. Therefore, we must do detailed and accurate study and analysis on this kind of structure, master the response regularity of structure under the lateral load action and the plastic yield mechanism under the earthquake action especial under the rare earthquake action. It has very strong practical significance to develop work in this aspect. Acording to this propositions in this field, in this paper, several aspects work has been finished:
(1) By several example discussion, We analyze the mechanical mechanism that the horizontal strengthened stories reduce structural lateral displacement, and analyze internal force redistribution phenomenon which is caused by the establishment of horizontal strengthened stories.
(2) Based on the method of continuous analysis for the high-rise structure, the analytical expression of lateral displacement and internal force for the frame-tubular structure with horizontal strengthened stories are established, and quantitative analysis have finished on this aspect structure.
(3) The influence of strengthened stories on the shear lag effect of the outer frame- tube in tube-in-tube structure is discussed through several examples.
(4) The static elastic-plastic analysis (push-over analysis) on various structures are presented with horizontal strengthened stories, the plastic yield mechanism and ductility performance under earthquake action have been discussed in this paper. It is pointed out that weak stories will be formed nearby the horizontal strengthened stories. In the design we must take corresponding measures to ensure the deformability of the structure under rare earthquake action.
(5) Based on the analysis of super high-rise structure, elastic dynamic response of the structure with horizontal strengthened stories is discussed, t the mutation of stiffness and internal forces and weak stories caused by strengthened stories are pointed out, then give some suggestions on designing this structure.
(1)通过多个算例计算,分析了水平加强层减小结构侧移的力学机理;分析了结构在设置加强层后引起的内力重分布现象。
(2)运用高层连续化分析方法,建立顶部带水平伸臂的框架-筒体结构侧移和内力的解析表达式,对结构进行了定量分析。
(3)通过多种加强层设置方案探讨了加强层对筒中筒结构外框筒柱剪力滞后效应的影响。
(4)进行了多种加强层结构的静力弹塑性分析,研究其在地震作用下的塑性屈服机制和延性性能;指出结构在大震作用下加强层附近会形成薄弱层,结构设计中必须采取相应的措施保证其变形能力。
(5)以超高层算例分析为基础,探讨了带水平加强层的高层筒体结构的动力反应,指出加强层引起的刚度、内力突变问题和引起的薄弱层,为设计提供一些建议。
Horizontal strengthened stories can effectively reduce the lateral displacement of the high-rise tubular structures under lateral load. But the high-rise tubular structures with horizontal strengthened stories displayed the extremely complex response characteristic under the earthquake action, the setting of Horizontal strengthened stories can not only cause the mutation of vertical stiffness, and the redistribution of the structural internal force, but also easily form weak stories nearby the horizontal strengthened stories. Therefore, we must do detailed and accurate study and analysis on this kind of structure, master the response regularity of structure under the lateral load action and the plastic yield mechanism under the earthquake action especial under the rare earthquake action. It has very strong practical significance to develop work in this aspect. Acording to this propositions in this field, in this paper, several aspects work has been finished:
(1) By several example discussion, We analyze the mechanical mechanism that the horizontal strengthened stories reduce structural lateral displacement, and analyze internal force redistribution phenomenon which is caused by the establishment of horizontal strengthened stories.
(2) Based on the method of continuous analysis for the high-rise structure, the analytical expression of lateral displacement and internal force for the frame-tubular structure with horizontal strengthened stories are established, and quantitative analysis have finished on this aspect structure.
(3) The influence of strengthened stories on the shear lag effect of the outer frame- tube in tube-in-tube structure is discussed through several examples.
(4) The static elastic-plastic analysis (push-over analysis) on various structures are presented with horizontal strengthened stories, the plastic yield mechanism and ductility performance under earthquake action have been discussed in this paper. It is pointed out that weak stories will be formed nearby the horizontal strengthened stories. In the design we must take corresponding measures to ensure the deformability of the structure under rare earthquake action.
(5) Based on the analysis of super high-rise structure, elastic dynamic response of the structure with horizontal strengthened stories is discussed, t the mutation of stiffness and internal forces and weak stories caused by strengthened stories are pointed out, then give some suggestions on designing this structure.
引文
[1]金问鲁.高层建筑结构的连续化分析[M].北京:中国铁道出版社, 1994.
[2] Stafford Smith B,Coull A.高层建筑结构分析与设计[M].陈瑜,龚炳年译.北京:地震出版社,1993.
[3]刘大海,杨翠如.高层建筑结构方案优选[M].北京:中国建筑工业出版社, 1996.
[4]赵西安.钢筋混凝土高层建筑结构设计[M].北京:中国建筑工业出版社, 1995.
[5]高层建筑混凝土结构技术规程JGJ 3-2002.
[6]建筑抗震设计规范GB 50011-2001.
[7]徐培福,傅学怡等.复杂高层建筑结构设计[M].北京:中国建筑工业出版社.
[8]北京金土木软件技术有限公司,中国建筑标准设计研究院. ETABS中文版使用指南[M].北京:中国建筑工业出版社.
[9]陈林之.水平加强层在高层建筑结构中的应用研究.四川大学硕士学位论文. 2006
[10]周春圣,张仲先等.顶部设置加强层的框-筒结构应变能分析[J].武汉理工大学学报. 2006.28(3).86-88.
[11]苏原,张仲先,陈传尧.带水平伸臂构件的框架-筒体结构侧移分析方法研究[J].华中科技大学学报(自然科学版).
[12]张仲先,周春圣,夏凯等.设置多道加强层的框-筒结构侧移分析方法.[J]武汉理工大学学报, 2006,28(4): 52-55.
[13]朱杰江,宋建,王颖等.带加强层框架-芯筒结构的优化研究.[J]南京建筑工程学院学报, 2001,3: 26-31.
[14] Stafford Smith B and Coull A. Tall Building Structures: Analysis and Design[M]. New York: wiley, 1991.
[15] Stafford Smith B and Salim I. Parameter study of outrigger braced tall buiding structure[J]. Journal of Structural Enginerring 107(T10). 2001~2014.
[16] A Coull & W.H.O. Lau: Outrigger Braced Structure Subjected to Static Seimic Load[J]. proc.4th int.conf on tall buiidings, Hong Kong and Shang Hai, Vol.1, Hong Kong, 1998.
[17] F. R. Moudarres & A. Coull: Free vibrations of outrigger-braced structures[J]. proc. Inst. Civ. Engrs. Part 2, Vol.79, 1985.
[18] Taranath BS. Optimum belt truss location for high-rise structures[J]. Structural Enginerring.1975.53(8):18-21.
[19] NcNabb JW and Muvdi BB. Drift reduction factors for belt high-rise structures[J].Engineering Journal 3nd Quarter (1975). 88~91.
[20] P.C. Boggs & D.A. Gasparini: lateral stiffness of core outrigger system[J]. Engineering Journal1983. American institute of steel construction.
[21] A. Rutenberg & D. Tal: lateral load response of belted tall building structures[J]. Engineering structure: 1987, 9.
[22]黄世敏,魏琏,衣洪建等.高层建筑中水平加强层最优位置的研究[J].建筑科学.2003.19(2): 4~6+10.
[23]袁兴隆,张誉.高层建筑伸臂的最佳位置分析[J].四川建筑科学研究.1996(1).15~18.
[24]丁洁民.高层结构中水平带状桁架的最佳位置及其影响参数.第十一届全国高层会议论文集.
[25]徐培福,黄吉锋等.带加强层的框架-核心筒结构抗震设计中的几个问题[J].建筑结构学报.1999.20(4): 2~10.
[26]张正国,傅学怡等.带刚臂超高层结构工作性能研究[J].建筑结构学报.1996.17(4).
[27]张马俊,梅占馨,傅学怡等.刚臂-芯筒高层建筑结构的弹塑性动力分析[J].西安建筑科技大学学报.1996.28(4).
[28]易方民,高小旺,王巍等.水平加强层在超高层钢结构中的应用研究[J].建筑科学.2001.17(1).
[29]陈林之,李章政.水平加强层对筒中筒结构空间受力性能的影响[J].工业建筑.2005. 35(10).
[30]阮永辉,吕西林.带水平加强层的超高层结构的力学性能分析[J].结构分析.2000. 12-16..
[31]张仲先,周春圣等.加强层和楼层梁对框-筒结构侧移的影响[J].华中科技大学学报.2006. 34(9).
[32]张杰,张仲先等.伸臂刚度对加强层设置位置的影响分析[J].华中科技大学学报.2006. 34(9).
[33]刘婕,梅占馨,傅学怡.带刚臂超高层结构工作性能研究[J].西安公路交通大学学报.1998. 18(3).54-58.
[34]朱杰江,徐道远等.框架侧移的连续化模型分析[J].河海大学学报.2001.29(1).
[35]袁兴隆.高层建筑加强层的研究与应用分析[J].贵州工学院学报.1995.24(2).
[36]李晓莉.吴敏哲.郭棣.基于性能的抗震设计研究[J].世界地震工程.2004.20(1).153-156.
[37]葛家琪,张涛.带有结构加强层的超高层主体结构设计研究[J].建筑科学.2006.28(3).
[38]朱幼麟.具有水平加强层的筒体结构内力分析[J].建筑结构.1995(10):44~47.
[39] Paul Kuhn & Nagpal A.K: Negative shear in framed-tube building, J. of struc Eng v120, N11, Nov. 1994, p3005-3121.
[40]高雁.筒体结构剪力滞后效应研究及其简化分析.重庆大学硕士学位论文.2006.
[41] Burgan B.A. & Dowling P.J: The treatment of shear lag in Design, Thin-walled structures 9(1990)121-134.
[42] M.Saidi and M.A.Sozen: Simple nonlinear seimic analysis of R/C structural[J].Journal of structural Division(ASCE).107.1981.937-952.
[43] Peter Fajfar and Peter Gaspersic: The N2 method for the seismic damage analysis of RC building[J].Earthquake Engineering and structure Dynamics.1996.25-31-46.
[44] Helmut Krawinkler and G. D. P. K.Senerviratna. Pros and cons of a push-over analysis of Seismic performance evaluation [J].Engineering Structural. 1998.20 452-464.
[45]汪大绥,霍军利,张风新.静力弹塑性分析(Pushover Analysis)的基本原理和计算实例[J].世界地震工程.2004.20(1).
[46]杨溥,李英民,王亚勇等.结构静力弹塑性分析(Push-over)方法的改进[J].建筑结构.2000.21(1).
[47]钱稼茹,罗文斌.静力弹塑性分析-基于性能/位移抗震设计的分析工具[J].建筑结构.2000.30(6).
[48]杨溥,李东,李英民等.抗震结构静力弹塑性分析(Push-over)方法的研究进展[J].重庆建筑大学学报.2000.22增刊.
[49] J. P. Moehel. Displacement-based Design of RC Structure[C].10 th world conf. on Earthquake Eng. Mexico.1992:1576-1574.
[50] Chopra, A. K. and Goel, R. K(2002). A modal pushover analysis procedure for estimating seismic demands for buildings[J]. Earthquake Eng. Struct. Dyn. 31(3),561-582.
[51]北京金土木软件技术有限公司,中国建筑标准设计研究院. ETABS中文版使用指南[M].北京:人民交通出版社, 2006.
[52]杜修力.结构弹塑性地震反应现状评述[J].工程力学.1994.11(2).
[53]种迅. Pushover分析中侧向力分布形式的影响[J].工程力学增刊.2001.
[54]汪梦甫,周锡元.关于结构静力弹塑性分析(Push-over)方法中的几个问题[J].结构工程师.2002.4:17-22.
[55]熊向阳,戚震华.侧向荷载分布模式对静力弹塑性分析结果的影响[J].建筑科学.2001.17(5):8-13.
[56]种迅. Pushover分析中侧向力分布形式的影响[J].工程力学增刊.2001.
[57]沈蒲生.朱建华.基于pushover方法的框筒结构在水平地震作用下的层间耗能研究[J].工程抗震与加固改造.2006.28(3).
[2] Stafford Smith B,Coull A.高层建筑结构分析与设计[M].陈瑜,龚炳年译.北京:地震出版社,1993.
[3]刘大海,杨翠如.高层建筑结构方案优选[M].北京:中国建筑工业出版社, 1996.
[4]赵西安.钢筋混凝土高层建筑结构设计[M].北京:中国建筑工业出版社, 1995.
[5]高层建筑混凝土结构技术规程JGJ 3-2002.
[6]建筑抗震设计规范GB 50011-2001.
[7]徐培福,傅学怡等.复杂高层建筑结构设计[M].北京:中国建筑工业出版社.
[8]北京金土木软件技术有限公司,中国建筑标准设计研究院. ETABS中文版使用指南[M].北京:中国建筑工业出版社.
[9]陈林之.水平加强层在高层建筑结构中的应用研究.四川大学硕士学位论文. 2006
[10]周春圣,张仲先等.顶部设置加强层的框-筒结构应变能分析[J].武汉理工大学学报. 2006.28(3).86-88.
[11]苏原,张仲先,陈传尧.带水平伸臂构件的框架-筒体结构侧移分析方法研究[J].华中科技大学学报(自然科学版).
[12]张仲先,周春圣,夏凯等.设置多道加强层的框-筒结构侧移分析方法.[J]武汉理工大学学报, 2006,28(4): 52-55.
[13]朱杰江,宋建,王颖等.带加强层框架-芯筒结构的优化研究.[J]南京建筑工程学院学报, 2001,3: 26-31.
[14] Stafford Smith B and Coull A. Tall Building Structures: Analysis and Design[M]. New York: wiley, 1991.
[15] Stafford Smith B and Salim I. Parameter study of outrigger braced tall buiding structure[J]. Journal of Structural Enginerring 107(T10). 2001~2014.
[16] A Coull & W.H.O. Lau: Outrigger Braced Structure Subjected to Static Seimic Load[J]. proc.4th int.conf on tall buiidings, Hong Kong and Shang Hai, Vol.1, Hong Kong, 1998.
[17] F. R. Moudarres & A. Coull: Free vibrations of outrigger-braced structures[J]. proc. Inst. Civ. Engrs. Part 2, Vol.79, 1985.
[18] Taranath BS. Optimum belt truss location for high-rise structures[J]. Structural Enginerring.1975.53(8):18-21.
[19] NcNabb JW and Muvdi BB. Drift reduction factors for belt high-rise structures[J].Engineering Journal 3nd Quarter (1975). 88~91.
[20] P.C. Boggs & D.A. Gasparini: lateral stiffness of core outrigger system[J]. Engineering Journal1983. American institute of steel construction.
[21] A. Rutenberg & D. Tal: lateral load response of belted tall building structures[J]. Engineering structure: 1987, 9.
[22]黄世敏,魏琏,衣洪建等.高层建筑中水平加强层最优位置的研究[J].建筑科学.2003.19(2): 4~6+10.
[23]袁兴隆,张誉.高层建筑伸臂的最佳位置分析[J].四川建筑科学研究.1996(1).15~18.
[24]丁洁民.高层结构中水平带状桁架的最佳位置及其影响参数.第十一届全国高层会议论文集.
[25]徐培福,黄吉锋等.带加强层的框架-核心筒结构抗震设计中的几个问题[J].建筑结构学报.1999.20(4): 2~10.
[26]张正国,傅学怡等.带刚臂超高层结构工作性能研究[J].建筑结构学报.1996.17(4).
[27]张马俊,梅占馨,傅学怡等.刚臂-芯筒高层建筑结构的弹塑性动力分析[J].西安建筑科技大学学报.1996.28(4).
[28]易方民,高小旺,王巍等.水平加强层在超高层钢结构中的应用研究[J].建筑科学.2001.17(1).
[29]陈林之,李章政.水平加强层对筒中筒结构空间受力性能的影响[J].工业建筑.2005. 35(10).
[30]阮永辉,吕西林.带水平加强层的超高层结构的力学性能分析[J].结构分析.2000. 12-16..
[31]张仲先,周春圣等.加强层和楼层梁对框-筒结构侧移的影响[J].华中科技大学学报.2006. 34(9).
[32]张杰,张仲先等.伸臂刚度对加强层设置位置的影响分析[J].华中科技大学学报.2006. 34(9).
[33]刘婕,梅占馨,傅学怡.带刚臂超高层结构工作性能研究[J].西安公路交通大学学报.1998. 18(3).54-58.
[34]朱杰江,徐道远等.框架侧移的连续化模型分析[J].河海大学学报.2001.29(1).
[35]袁兴隆.高层建筑加强层的研究与应用分析[J].贵州工学院学报.1995.24(2).
[36]李晓莉.吴敏哲.郭棣.基于性能的抗震设计研究[J].世界地震工程.2004.20(1).153-156.
[37]葛家琪,张涛.带有结构加强层的超高层主体结构设计研究[J].建筑科学.2006.28(3).
[38]朱幼麟.具有水平加强层的筒体结构内力分析[J].建筑结构.1995(10):44~47.
[39] Paul Kuhn & Nagpal A.K: Negative shear in framed-tube building, J. of struc Eng v120, N11, Nov. 1994, p3005-3121.
[40]高雁.筒体结构剪力滞后效应研究及其简化分析.重庆大学硕士学位论文.2006.
[41] Burgan B.A. & Dowling P.J: The treatment of shear lag in Design, Thin-walled structures 9(1990)121-134.
[42] M.Saidi and M.A.Sozen: Simple nonlinear seimic analysis of R/C structural[J].Journal of structural Division(ASCE).107.1981.937-952.
[43] Peter Fajfar and Peter Gaspersic: The N2 method for the seismic damage analysis of RC building[J].Earthquake Engineering and structure Dynamics.1996.25-31-46.
[44] Helmut Krawinkler and G. D. P. K.Senerviratna. Pros and cons of a push-over analysis of Seismic performance evaluation [J].Engineering Structural. 1998.20 452-464.
[45]汪大绥,霍军利,张风新.静力弹塑性分析(Pushover Analysis)的基本原理和计算实例[J].世界地震工程.2004.20(1).
[46]杨溥,李英民,王亚勇等.结构静力弹塑性分析(Push-over)方法的改进[J].建筑结构.2000.21(1).
[47]钱稼茹,罗文斌.静力弹塑性分析-基于性能/位移抗震设计的分析工具[J].建筑结构.2000.30(6).
[48]杨溥,李东,李英民等.抗震结构静力弹塑性分析(Push-over)方法的研究进展[J].重庆建筑大学学报.2000.22增刊.
[49] J. P. Moehel. Displacement-based Design of RC Structure[C].10 th world conf. on Earthquake Eng. Mexico.1992:1576-1574.
[50] Chopra, A. K. and Goel, R. K(2002). A modal pushover analysis procedure for estimating seismic demands for buildings[J]. Earthquake Eng. Struct. Dyn. 31(3),561-582.
[51]北京金土木软件技术有限公司,中国建筑标准设计研究院. ETABS中文版使用指南[M].北京:人民交通出版社, 2006.
[52]杜修力.结构弹塑性地震反应现状评述[J].工程力学.1994.11(2).
[53]种迅. Pushover分析中侧向力分布形式的影响[J].工程力学增刊.2001.
[54]汪梦甫,周锡元.关于结构静力弹塑性分析(Push-over)方法中的几个问题[J].结构工程师.2002.4:17-22.
[55]熊向阳,戚震华.侧向荷载分布模式对静力弹塑性分析结果的影响[J].建筑科学.2001.17(5):8-13.
[56]种迅. Pushover分析中侧向力分布形式的影响[J].工程力学增刊.2001.
[57]沈蒲生.朱建华.基于pushover方法的框筒结构在水平地震作用下的层间耗能研究[J].工程抗震与加固改造.2006.28(3).