不同肢厚比框支短肢剪力墙斜柱式转换层结构的抗震试验研究
|
摘要
针对目前工程中广泛应用但理论研究尚不完善的框支短肢剪力墙结构,本文通过对三榀墙肢宽厚比分别为5、6、7的斜柱式框支短肢剪力墙结构试件,在竖向荷载和水平低周反复荷载作用下的拟静力试验研究,对比分析斜柱式框支短肢剪力墙结构墙肢不同宽厚比试件的实验结果,得出墙肢宽厚比的变化对试件受力性能的影响,包括试件在整个试验过程中的宏观现象,各部分的应力应变分布情况。
在试验和分析结果的基础上,揭示出该转换结构的在竖向荷载下的受力机理、承载能力、破坏形态以及水平荷载下的滞回特性、变形能力、延性系数等抗震耗能及其破坏机制等,揭示出采用斜柱式转换框支短肢剪力墙结构在竖向荷载下以及水平荷载下的抗震性能,从而为实际工程中这种斜柱式转换结构的合理设计提供了部分依据。
试验结果表明,采用斜柱式转换的框支短肢剪力墙结构具有良好的的屈服及破坏机制,经过合理设计的框支短肢剪力墙结构具有良好的抗震性能。此类结构滞回曲线的滞回环饱满,具有较好的延性性能和耗能能力,各层刚度分布比较均匀,其弹性及弹塑性变形过程中各层变形性能较为稳定。随着短肢剪力墙墙肢肢厚比的增大,结构的刚度有明显增强,内力分布趋于均匀,使结构受力更为合理,但当墙肢长度增至一定程度后,这种有利的影响就不再明显,从三个试件的分析结果看,短肢墙肢厚比适中的试件抗震性能更好。
There is still a shortage of theoretical studies on frame-supported short-leg shearwall structure, though it has been widely applied in present projects. Through quasi-static experiments on three inclined column-shaped frame-supported short-leg shearwall structure specimens with respectively the ratio of the width to the thickness of wall-leg ranged from 5, 6, to7 under the vertical load and horizontal cyclic load, this paper will make a comparative analysis on the results of inclined column-shaped frame-supported short-leg shearwall specimens with different ratios of the width to the thickness, and reach the conclusion that the ratio of the width to the thickness variations of wall-leg influences mechanical behavior of these specimens, the macro-phenomenon in the whole course of the experiment, and stress distribution of all the parts as well.
The experiment and results of analysis revealed the stress mechanics, bearing capacity and damage shape of the transfer structure under vertical load, and its hysteretic characteristics, distortion ability, ductility factor, seismic energy dissipation and damage mechanism under horizontal load, and the seismic behavior of the inclined column-shaped transfer frame-supported short-leg shearwall structure under vertical and horizontal load. And provided some basis for reasonable design of this transfer structure in practical projects.
The results of the experiment revealed that the inclined column-shaped transfer frame-supported short-leg shearwall structure has a good yield and damage mechanic, and the rationally designed frame-supported short-leg shearwall structure has a good seismic behavior. This sort of structure has a full hysteretic circle of the hysteretic loops, good ductility nature and dissipation ability, with a uniform distributed rigidity and a stable deformation nature for each layer in elastic and elastic-plastic deformation process. Along with the ratio of the thickness of wall-leg of the short-leg shearwall being enhanced, the rigidity of the structure is also noticeable enhanced, the endogen force becomes more evenly distributed and the bearing is more rational. However, when the wall-leg is stretched to a certain length, the favorable influence is no more obvious. The analysis of the three specimens shows that the short-leg shearwall with a moderate ratio of the thickness of wall-leg has the better seismic behavior.
在试验和分析结果的基础上,揭示出该转换结构的在竖向荷载下的受力机理、承载能力、破坏形态以及水平荷载下的滞回特性、变形能力、延性系数等抗震耗能及其破坏机制等,揭示出采用斜柱式转换框支短肢剪力墙结构在竖向荷载下以及水平荷载下的抗震性能,从而为实际工程中这种斜柱式转换结构的合理设计提供了部分依据。
试验结果表明,采用斜柱式转换的框支短肢剪力墙结构具有良好的的屈服及破坏机制,经过合理设计的框支短肢剪力墙结构具有良好的抗震性能。此类结构滞回曲线的滞回环饱满,具有较好的延性性能和耗能能力,各层刚度分布比较均匀,其弹性及弹塑性变形过程中各层变形性能较为稳定。随着短肢剪力墙墙肢肢厚比的增大,结构的刚度有明显增强,内力分布趋于均匀,使结构受力更为合理,但当墙肢长度增至一定程度后,这种有利的影响就不再明显,从三个试件的分析结果看,短肢墙肢厚比适中的试件抗震性能更好。
There is still a shortage of theoretical studies on frame-supported short-leg shearwall structure, though it has been widely applied in present projects. Through quasi-static experiments on three inclined column-shaped frame-supported short-leg shearwall structure specimens with respectively the ratio of the width to the thickness of wall-leg ranged from 5, 6, to7 under the vertical load and horizontal cyclic load, this paper will make a comparative analysis on the results of inclined column-shaped frame-supported short-leg shearwall specimens with different ratios of the width to the thickness, and reach the conclusion that the ratio of the width to the thickness variations of wall-leg influences mechanical behavior of these specimens, the macro-phenomenon in the whole course of the experiment, and stress distribution of all the parts as well.
The experiment and results of analysis revealed the stress mechanics, bearing capacity and damage shape of the transfer structure under vertical load, and its hysteretic characteristics, distortion ability, ductility factor, seismic energy dissipation and damage mechanism under horizontal load, and the seismic behavior of the inclined column-shaped transfer frame-supported short-leg shearwall structure under vertical and horizontal load. And provided some basis for reasonable design of this transfer structure in practical projects.
The results of the experiment revealed that the inclined column-shaped transfer frame-supported short-leg shearwall structure has a good yield and damage mechanic, and the rationally designed frame-supported short-leg shearwall structure has a good seismic behavior. This sort of structure has a full hysteretic circle of the hysteretic loops, good ductility nature and dissipation ability, with a uniform distributed rigidity and a stable deformation nature for each layer in elastic and elastic-plastic deformation process. Along with the ratio of the thickness of wall-leg of the short-leg shearwall being enhanced, the rigidity of the structure is also noticeable enhanced, the endogen force becomes more evenly distributed and the bearing is more rational. However, when the wall-leg is stretched to a certain length, the favorable influence is no more obvious. The analysis of the three specimens shows that the short-leg shearwall with a moderate ratio of the thickness of wall-leg has the better seismic behavior.
引文
[1]娄宇,魏琏,丁大均.高层建筑中转换层结构的应用和发展[J].建筑结构.1997. No1. P21-41.
[2]徐培福等. JGJ 3-2002.高层建筑混凝土结构技术规程[S].北京.中国建筑工业出版社.
[3]徐正忠等. GB50011-2001.建筑抗震设计规范[S].北京.中国建筑工业出版社.
[4]娄宇,魏琏,丁大均.梁式转换层设计中的一些问题探讨[J].四川建筑科学研究.1996.No1. P7-11
[5]李杰,肖建庄等.钢筋混凝土异形柱结构振动台试验研究[J].土木工程学报. 2002.6. P7-12.
[6]高向宇,周福霖等.多层异形柱框架隔震性能的试验研究[J].世界地震工程.1997.12. P21-27
[7]程绍革,陈善阳等.高层建筑短肢剪力墙结构振动台试验研究[J].建筑科学. 2000.2. P12-16.
[8]黄东升,程文禳,彭飞.短肢剪力墙的弹塑性性能研究[J].东南大学学报. 2003.3.
[9]张晋,吕志涛.短肢剪力墙—筒体结构模型振动台试验研究[J].东南大学学报.2001.11. P4-8
[10]程绍革,陈善阳等.高层建筑短肢剪力墙结构振动台试验研究[J].建筑科学.2000.2. P12-16
[11] Cheng-Tzu Thomas Hsu.T-Shape Reinforced Concrete Menbersunder Biaxial Bending and Axial Compression. Journal of Structure Engineering. July-August 1989.
[12] Cheng-Tzu Thomas Hsu. Biaxially Loaded L-Shape Reinforced Concrete Columns. Journal of Structural Engineering.December 1985.
[13] L.N.Ramamurthy and T.A.Hafeez Khan. L-Shape Column Design for Biaxial Eccentricity. Journal of Structural Engineering. August 1985.
[14]廖耘.框支短肢剪力墙结构受力分析[D].西南交通大学硕士论文. 2002.
[15]钟树生,鲁瑛,肖德周.竖向荷载下方柱- T形薄壁柱转换节点承载力的计算方法[J].重庆建筑大学学报. 2001. Vol.8. No.4. P31-36.
[16]钟树生,勾清媛,张翼.钢筋混凝土斜柱转换节点的非线性有限元分析[J].重庆建筑大学学报.2005.Vol.27.No.3. P57-62.
[17]钟树生,史世伦,卢挺,蒋凡.框支短肢剪力墙结构中斜柱转换结构抗震试验研究[J].重庆建筑大学学报. 2007. Vol.29. No.1. P70-74.
[18]唐文亨等.高层建筑大跨度预应力桁架转换层设计与施工[J].建筑结构.2002.No.1. P43-46.
[19]罗迪,罗兆辉.高层建筑转换层结构设计中的几个问题分析[J].天津城市建设学院学报. 1999.9.Vol.5. No.3.
[20]王万钊,王安生等.钢筋混凝土桁架式结构在水平荷载下的性能试验研究[J].工程抗震No3. 1987.
[21]曹秀萍,马耀庭.斜柱在深圳2000大厦高为转换中的应用[J].建筑结构. 2002.8. P15-16
[22]李豪邦.高层建筑中结构转换层的新形式-斜柱转换[J].建筑结构学报. 1997.4. Vol.18.No.2. P41-45
[23]茅於川,尤亚平.高层建筑V形柱式结构转换[J].建筑科学2001.2. Vol.17. No.1. P38-42
[24]容柏生.高层住宅建筑中的短肢剪力墙结构体系[J].建筑结构学报. 1997.12 Vol.18. No.6
[25] Gupta,R, P, and Goel, S.C. Dynamic Analysis of staggered Truss Framing System. Journal of the Structural Division. ASCE Vol.98 No.stt. July. 1972.
[26] Wolfgang Schueller High Rise Building Structures. John wiley and sons publishing,London, 1978.
[27] Todorovska, Maria L. Base isolation by a soft first story with inclined columns.Journal of Engineering Mechanics. v12n 4. Apr 1999 ASCE.
[28] Mee, A.L.Jordan, I.A.and Ward, M.A. Wall-Beam Frames Under Static Lateral Journal of the structural Division, ASCE Vol.101, No.ST2 Feb. 1975.
[29] Fintel, M.Staggered. Transverse wall Beams for Multistory concrete Buildings. Journal of the American Concrete Institute Vol.65, No.5. May, 1968.
[30] F.X.Fan,X.R.Tang,B.J.Sun and Z.X.Guo. Optical Elastic Experimental Study on the transfer Truss Structure in Super-High-Rise building. Journal of Southeast University. Vol.11, No.1A. Oct.1995.
[31] Architectural Institute of Japan (1990). Design guidelines for earthquake resistant reinforced concrete buildings based on ultimate strength concept. November 1990.
[32] Minoru Wakabayashi. Design of Earthquake-Resitant Buildings. Mc-Graw-Hill Book Company, New York, 1986.
[33] XuPeiFu, HaoRuiKun, WuLianZhong. Seismic resitant design of shear wall structure with large space ground floor. Proc. of 3-rd Inter Conf. On Tall Buildings. Hong Kong and Guangzhou,1984.
[34]鲁瑛,钟树生.竖向荷载作用下钢筋混凝土斜柱-薄壁柱局部转换节点研究[D].重庆.重庆大学硕士论文.2003.
[35]曹林,钟树生.竖向荷载作用下钢筋混凝土框支-剪力墙变角斜柱局部转换节点研究[D].重庆.重庆大学硕士论文.2004.
[36]王章浩,钟树生.低周反复荷载作用下框支—短肢剪力墙中斜柱转换结构的试验研究[D].重庆.重庆大学硕士论文.2005.
[37]卢挺,钟树生.框支短肢剪力墙结构中斜柱式与梁式转换结构的抗震试验研究[D].重庆.重庆大学.2006.
[38]舒云峰,钟树生.不同肢厚比短肢剪力墙加腋梁式转换结构抗震试验研究[D].重庆.重庆大学.2006.
[2]徐培福等. JGJ 3-2002.高层建筑混凝土结构技术规程[S].北京.中国建筑工业出版社.
[3]徐正忠等. GB50011-2001.建筑抗震设计规范[S].北京.中国建筑工业出版社.
[4]娄宇,魏琏,丁大均.梁式转换层设计中的一些问题探讨[J].四川建筑科学研究.1996.No1. P7-11
[5]李杰,肖建庄等.钢筋混凝土异形柱结构振动台试验研究[J].土木工程学报. 2002.6. P7-12.
[6]高向宇,周福霖等.多层异形柱框架隔震性能的试验研究[J].世界地震工程.1997.12. P21-27
[7]程绍革,陈善阳等.高层建筑短肢剪力墙结构振动台试验研究[J].建筑科学. 2000.2. P12-16.
[8]黄东升,程文禳,彭飞.短肢剪力墙的弹塑性性能研究[J].东南大学学报. 2003.3.
[9]张晋,吕志涛.短肢剪力墙—筒体结构模型振动台试验研究[J].东南大学学报.2001.11. P4-8
[10]程绍革,陈善阳等.高层建筑短肢剪力墙结构振动台试验研究[J].建筑科学.2000.2. P12-16
[11] Cheng-Tzu Thomas Hsu.T-Shape Reinforced Concrete Menbersunder Biaxial Bending and Axial Compression. Journal of Structure Engineering. July-August 1989.
[12] Cheng-Tzu Thomas Hsu. Biaxially Loaded L-Shape Reinforced Concrete Columns. Journal of Structural Engineering.December 1985.
[13] L.N.Ramamurthy and T.A.Hafeez Khan. L-Shape Column Design for Biaxial Eccentricity. Journal of Structural Engineering. August 1985.
[14]廖耘.框支短肢剪力墙结构受力分析[D].西南交通大学硕士论文. 2002.
[15]钟树生,鲁瑛,肖德周.竖向荷载下方柱- T形薄壁柱转换节点承载力的计算方法[J].重庆建筑大学学报. 2001. Vol.8. No.4. P31-36.
[16]钟树生,勾清媛,张翼.钢筋混凝土斜柱转换节点的非线性有限元分析[J].重庆建筑大学学报.2005.Vol.27.No.3. P57-62.
[17]钟树生,史世伦,卢挺,蒋凡.框支短肢剪力墙结构中斜柱转换结构抗震试验研究[J].重庆建筑大学学报. 2007. Vol.29. No.1. P70-74.
[18]唐文亨等.高层建筑大跨度预应力桁架转换层设计与施工[J].建筑结构.2002.No.1. P43-46.
[19]罗迪,罗兆辉.高层建筑转换层结构设计中的几个问题分析[J].天津城市建设学院学报. 1999.9.Vol.5. No.3.
[20]王万钊,王安生等.钢筋混凝土桁架式结构在水平荷载下的性能试验研究[J].工程抗震No3. 1987.
[21]曹秀萍,马耀庭.斜柱在深圳2000大厦高为转换中的应用[J].建筑结构. 2002.8. P15-16
[22]李豪邦.高层建筑中结构转换层的新形式-斜柱转换[J].建筑结构学报. 1997.4. Vol.18.No.2. P41-45
[23]茅於川,尤亚平.高层建筑V形柱式结构转换[J].建筑科学2001.2. Vol.17. No.1. P38-42
[24]容柏生.高层住宅建筑中的短肢剪力墙结构体系[J].建筑结构学报. 1997.12 Vol.18. No.6
[25] Gupta,R, P, and Goel, S.C. Dynamic Analysis of staggered Truss Framing System. Journal of the Structural Division. ASCE Vol.98 No.stt. July. 1972.
[26] Wolfgang Schueller High Rise Building Structures. John wiley and sons publishing,London, 1978.
[27] Todorovska, Maria L. Base isolation by a soft first story with inclined columns.Journal of Engineering Mechanics. v12n 4. Apr 1999 ASCE.
[28] Mee, A.L.Jordan, I.A.and Ward, M.A. Wall-Beam Frames Under Static Lateral Journal of the structural Division, ASCE Vol.101, No.ST2 Feb. 1975.
[29] Fintel, M.Staggered. Transverse wall Beams for Multistory concrete Buildings. Journal of the American Concrete Institute Vol.65, No.5. May, 1968.
[30] F.X.Fan,X.R.Tang,B.J.Sun and Z.X.Guo. Optical Elastic Experimental Study on the transfer Truss Structure in Super-High-Rise building. Journal of Southeast University. Vol.11, No.1A. Oct.1995.
[31] Architectural Institute of Japan (1990). Design guidelines for earthquake resistant reinforced concrete buildings based on ultimate strength concept. November 1990.
[32] Minoru Wakabayashi. Design of Earthquake-Resitant Buildings. Mc-Graw-Hill Book Company, New York, 1986.
[33] XuPeiFu, HaoRuiKun, WuLianZhong. Seismic resitant design of shear wall structure with large space ground floor. Proc. of 3-rd Inter Conf. On Tall Buildings. Hong Kong and Guangzhou,1984.
[34]鲁瑛,钟树生.竖向荷载作用下钢筋混凝土斜柱-薄壁柱局部转换节点研究[D].重庆.重庆大学硕士论文.2003.
[35]曹林,钟树生.竖向荷载作用下钢筋混凝土框支-剪力墙变角斜柱局部转换节点研究[D].重庆.重庆大学硕士论文.2004.
[36]王章浩,钟树生.低周反复荷载作用下框支—短肢剪力墙中斜柱转换结构的试验研究[D].重庆.重庆大学硕士论文.2005.
[37]卢挺,钟树生.框支短肢剪力墙结构中斜柱式与梁式转换结构的抗震试验研究[D].重庆.重庆大学.2006.
[38]舒云峰,钟树生.不同肢厚比短肢剪力墙加腋梁式转换结构抗震试验研究[D].重庆.重庆大学.2006.