钢筋沥青隔震层弹塑性设计研究
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摘要
钢筋沥青隔震层施工简便、造价低廉,且具有较好的隔震性能,解决了广大村镇地区低矮房屋抗震能力普遍不足的缺点。但其工程设计方法尚不完善,如何进行隔震层弹塑性设计才能达到最好的隔震效果,目前尚不明确。本文介绍了钢筋沥青隔震层的构造,推导了隔震层竖向钢筋不发生第一类失稳和第二类失稳的条件,探讨了各设计参数的取值范围,提出了一种弹塑性设计思路:二阶段试算法。为便于该设计方法的应用,本文对一栋两层的砌体结构房屋进行了工程设计,验证该设计方法的适用性和可靠性。研究表明:合理使用该方法进行设计,水平减震系数可在0.5以下。
The steel-asphalt isolation layer construction is simple, low cost, and has good isolation performance, and it has solved the shortcomings of weak earthquake resistance of low buildings in the vast villages and towns. But its design method is not perfect, how to carry out the isolation layer of elastoplastic design to achieve the best isolation effect is not clear. In this paper, the construction of steel-asphalt isolation layer is introduced. The conditions for the first kind of instability and second kind of instability of the vertical reinforcement of the isolation layer are deduced, the range of the design parameters is discussed, an elastoplastic design idea is put forward: the two-stage trial calculation method. In order to facilitate the application of this design method, a two-story masonry building is designed to verify the applicability and reliability of the design method. The study shows that the horizontal seismic decrease coefficient could be controlled under 0.5 when using this method for design reasonably.
The steel-asphalt isolation layer construction is simple, low cost, and has good isolation performance, and it has solved the shortcomings of weak earthquake resistance of low buildings in the vast villages and towns. But its design method is not perfect, how to carry out the isolation layer of elastoplastic design to achieve the best isolation effect is not clear. In this paper, the construction of steel-asphalt isolation layer is introduced. The conditions for the first kind of instability and second kind of instability of the vertical reinforcement of the isolation layer are deduced, the range of the design parameters is discussed, an elastoplastic design idea is put forward: the two-stage trial calculation method. In order to facilitate the application of this design method, a two-story masonry building is designed to verify the applicability and reliability of the design method. The study shows that the horizontal seismic decrease coefficient could be controlled under 0.5 when using this method for design reasonably.
引文
[1] 尚守平, 周福霖. 结构抗震设计[M]. 北京:高等教育出版社, 2003:106-108. SHANG Shouping, ZHOU Fulin.Seismic design of structures[M]. Beijing:Higher Education Press, 2003: 106-108.(in Chinese)
[2] GB50011 - 2010 建筑抗震设计规范[S]. 北京:中国建筑工业出版社,2010.GB50011-2010 Code for Seismic Design of Buildings[S]. Beijing:Building Industry Press of China,2010.(in Chinese)
[3] 熊立红, 阳超. 砌体结构的抗震研究现状[J]. 地震工程与工程振动, 2017, 37(3):111-119.XIONG Lihong, YANG Chao. An overview of research on seismic behavior of masonry structures[J]. Earthquake Engineering and Engineering Dynamics, 2017, 37(3):111-119.(in Chinese)
[4] 尚守平, 周可威. 复合隔震墩性能试验研究[J]. 地震工程与工程振动,2012,32( 6):119-123.SHANG Shouping,ZHOU Kewei.Research on composite seismic isolation pier[J]. Earthquake Engineering and Engineering Dynamics,2012,32(6):119-123.( in Chinese)
[5] 尚守平, 朱博闻, 吴建任, 等. 钢筋沥青复合隔震层实际工程应用研究[J]. 湖南大学学报:自然科学版, 2013, 40(7):1-8.SHANG Shouping, ZHU Bowen, WU Jianren, et al. Research on steel asphalt isolation layer in practical engineering[J]. Journal of Hunan University: Natural Science Edition, 2013, 40(7):1-8.(in Chinese)
[6] 尚守平, 杨龙. 钢筋沥青隔震层位移控制研究[J]. 土木工程学报, 2013, 48(2):26-33.SHANG Shouping, YANG Long. Research on controlling of the displacement of the steel-asphalt isolation layer[J]. China Civil Engineering Journal, 2013, 48(2):26-33.(in Chinese)
[7] 周志锦. 一种钢筋-沥青复合隔震层研究[D]. 长沙:湖南大学土木工程学院, 2009:15-23.ZHOU Zhijin. Research on seismic isolation performance of steel-asphalt isolation layer [D]. Changsha: Civil Engineering College Hunan University, 2009:15-23.(in Chinese)
[8] 尚守平, 姚菲, 刘可.一种新型隔震层的构造及其振动台试验研究[J]. 土木工程学报, 2009, 44(2):36-41.SHANG Shouping, YAO Fei, LIU Ke.Study of the structure of a new type of isolation layer and shaking table test [J]. China Civil Engineering Journal, 2009, 44(2): 36-41.(in Chinese)
[9] DBJ 43 /T 304-2014 多层房屋钢筋沥青基础隔震技术规程[S]. 长沙:湖南科学技术出版社,2014. DBJ 43 /T 304 -2014 Technical Specification for Steel Bar-Asphalt Base Isolation Technology in Multi-Story Building[S]. Changsha:Hunan Science and Technology Press,2014( in Chinese)
[2] GB50011 - 2010 建筑抗震设计规范[S]. 北京:中国建筑工业出版社,2010.GB50011-2010 Code for Seismic Design of Buildings[S]. Beijing:Building Industry Press of China,2010.(in Chinese)
[3] 熊立红, 阳超. 砌体结构的抗震研究现状[J]. 地震工程与工程振动, 2017, 37(3):111-119.XIONG Lihong, YANG Chao. An overview of research on seismic behavior of masonry structures[J]. Earthquake Engineering and Engineering Dynamics, 2017, 37(3):111-119.(in Chinese)
[4] 尚守平, 周可威. 复合隔震墩性能试验研究[J]. 地震工程与工程振动,2012,32( 6):119-123.SHANG Shouping,ZHOU Kewei.Research on composite seismic isolation pier[J]. Earthquake Engineering and Engineering Dynamics,2012,32(6):119-123.( in Chinese)
[5] 尚守平, 朱博闻, 吴建任, 等. 钢筋沥青复合隔震层实际工程应用研究[J]. 湖南大学学报:自然科学版, 2013, 40(7):1-8.SHANG Shouping, ZHU Bowen, WU Jianren, et al. Research on steel asphalt isolation layer in practical engineering[J]. Journal of Hunan University: Natural Science Edition, 2013, 40(7):1-8.(in Chinese)
[6] 尚守平, 杨龙. 钢筋沥青隔震层位移控制研究[J]. 土木工程学报, 2013, 48(2):26-33.SHANG Shouping, YANG Long. Research on controlling of the displacement of the steel-asphalt isolation layer[J]. China Civil Engineering Journal, 2013, 48(2):26-33.(in Chinese)
[7] 周志锦. 一种钢筋-沥青复合隔震层研究[D]. 长沙:湖南大学土木工程学院, 2009:15-23.ZHOU Zhijin. Research on seismic isolation performance of steel-asphalt isolation layer [D]. Changsha: Civil Engineering College Hunan University, 2009:15-23.(in Chinese)
[8] 尚守平, 姚菲, 刘可.一种新型隔震层的构造及其振动台试验研究[J]. 土木工程学报, 2009, 44(2):36-41.SHANG Shouping, YAO Fei, LIU Ke.Study of the structure of a new type of isolation layer and shaking table test [J]. China Civil Engineering Journal, 2009, 44(2): 36-41.(in Chinese)
[9] DBJ 43 /T 304-2014 多层房屋钢筋沥青基础隔震技术规程[S]. 长沙:湖南科学技术出版社,2014. DBJ 43 /T 304 -2014 Technical Specification for Steel Bar-Asphalt Base Isolation Technology in Multi-Story Building[S]. Changsha:Hunan Science and Technology Press,2014( in Chinese)