碳纤维增强复合材料索对悬挂结构静力性能的影响分析
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摘要
悬挂建筑结构具有良好的抗震、抗风性能,但作为其主要受力部件的钢索,则常易出现锈蚀、疲劳等问题。为此,将高强碳纤维增强复合材料(CFRP)筋制成索代替预应力钢筋用于悬挂建筑结构。设计了一幢全CFRP索/钢索悬挂建筑结构,对比分析了其理想成形状态时的索力和主要构件的内力。为了弄清楚不同材质索对悬挂结构静力性能的影响,对比分析了三种活载作用工况下、温度效应下两种吊索悬挂结构的静力性能,包括变形量和构件内力。研究表明,CFRP索悬挂建筑结构成形状态合理,对称吊点处CFRP索索力相同; CFRP索悬挂结构主要部件的内力、变形均小于钢索悬挂结构,且CFRP索温度效应小,更具应用优势。所做工作为新材料索的受力分析及推广应用提供参考。
The Suspended structure has good anti-seismic and wind resistance,but the steel cable,the main force component,is often prone to corrosion,fatigue and other problems. Therefore,high strength carbon fiber-reinforced polymer( CFRP) tendons are made into cables instead of prestressed cables for suspended structure. A suspended building structure with full CFRP cables/steel cables is designed,and the cables' force and the internal force of the main components are compared and analyzed. Then,in order to find out the influence of different material cables on the static performance of suspended structure,the deformation and internal force of main components under three kinds of active loading conditions and temperature effects are compared and analyzed. Research shows that the forming state of CFRP cable suspended structure is reasonable,and the forces of CFRP cables on symmetric hanging points are the same. The internal force and deformation of the main components in CFRP cable suspended structure are less than the steel cable suspended structure's. Meanwhile,the temperature effect of CFRP cable is small,it has the advantage of application. The conclusion provides a reference for the force analysis and application of the new material cables.
The Suspended structure has good anti-seismic and wind resistance,but the steel cable,the main force component,is often prone to corrosion,fatigue and other problems. Therefore,high strength carbon fiber-reinforced polymer( CFRP) tendons are made into cables instead of prestressed cables for suspended structure. A suspended building structure with full CFRP cables/steel cables is designed,and the cables' force and the internal force of the main components are compared and analyzed. Then,in order to find out the influence of different material cables on the static performance of suspended structure,the deformation and internal force of main components under three kinds of active loading conditions and temperature effects are compared and analyzed. Research shows that the forming state of CFRP cable suspended structure is reasonable,and the forces of CFRP cables on symmetric hanging points are the same. The internal force and deformation of the main components in CFRP cable suspended structure are less than the steel cable suspended structure's. Meanwhile,the temperature effect of CFRP cable is small,it has the advantage of application. The conclusion provides a reference for the force analysis and application of the new material cables.
引文
1徐向波,郭宝聚,陆可人.悬挂建筑---一种新的绿色形态.建筑节能,2009;(3):53-55Xu Xiangbo,Guo Baoju,Lu Keren.Suspended building---A new green form.Building Energy Saving,2009;(3):53-55
2王春林.高层建筑悬挂结构减振理论及试验研究.南京:东南大学,2009Wang Chunlin.Vibration control mechanism and experimental research of suspended-floor high-rise building.Nanjing:Southeast University,2009
3蔡文华,张继文,涂永明,等.核筒悬挂建筑结构体系的顺风向风致响应分析.工程力学,2011;28(6):103-109Cai Wenhua,Zhang Jiwen,Tu Yongming,et al.The analysis of along-wind-induced responses of core-tube suspended building structure.Engineering Mechanics,2011;28(6):103-109
4张鹏,张祥宁,邓宇,等.CFRP-PCPs复合筋混凝土连续梁承载力试验研究.科学技术与工程,2016;16(31):250-254,269Zhang Peng,Zhang Xiangning,Deng Yu,et al.Study on the bearing capacity of CFRP-PCPs composite reinforced concrete continuous beams.Science Technology and Engineering,2016;16(31):250-254,269
5季园园,韩庆华,芦燕,等.CFRP在土木工程中的应用研究.结构工程师,2014;30(5):210-219Ji Yuanyuan,Han Qinghua,Lu Yan,et al.Application research of CFRP in civil Engineering.Structural Engineering,2014;30(5):210-219
6童谷生,陈博文,赖泽坤.真空辅助成型工艺下纤维增强复合材料与混凝土界面的粘结滑移试验研究.科学技术与工程,2018;18(20):315-319Tong Gusheng,Chen Bowen,Lai Zekun.Experimental study on bond slip between fiber reinforced polymer and concrete interface under vacuum assisted molding technology process.Science Technology and Engineering,2018;18(20):315-319
7蔡文华,郁步军,张继文,等.CFRP索悬挂建筑结构试点工程的设计与分析.建筑科学,2015;31(7):46-51Cai Wenhua,Yu Bujun,Zhang Jiwen,et al.Design and analysis on the pilot project of CFRP cable suspended structure.Building Science,2015;31(7):46-51
8蔡文华,郁步军,张继文,等.国内首幢CFRP索悬挂建筑结构施工技术.施工技术,2015;44(21):47-50Cai Wenhua,Yu Bujun,Zhang Jiwen,et al.Construction technology of the first CFRP cable suspended structure in China.Construction Technology,2015;44(21):47-50
9蔡文华,郁步军,张继文,等.CFRP索悬挂结构试点工程施工力学分析.施工技术,2016;45(20):28-31Cai Wenhua,Yu Bujun,Zhang Jiwen,et al.Mechanical analysis of construction on the CFRP cable suspended structure pilot project.Construction Technology,2016;45(20):28-31
10周坚,伍孝波.核筒悬挂结构体系自振特性研究.工程力学,2005;22(1):75-81Zhou Jian,Wu Xiaobo.A study of model-frequency behavior of core-wall suspension structures.Engineering Mechanics,2005;22(1):75-81
11蔡文华.CFRP索悬挂减振结构静动力特性分析及应用研究.南京:东南大学,2014Cai Wenhua.Study on application and static&dynamic characteristics of CFRP cable vibration reduction.Nanjing:Southeast University,2014
2王春林.高层建筑悬挂结构减振理论及试验研究.南京:东南大学,2009Wang Chunlin.Vibration control mechanism and experimental research of suspended-floor high-rise building.Nanjing:Southeast University,2009
3蔡文华,张继文,涂永明,等.核筒悬挂建筑结构体系的顺风向风致响应分析.工程力学,2011;28(6):103-109Cai Wenhua,Zhang Jiwen,Tu Yongming,et al.The analysis of along-wind-induced responses of core-tube suspended building structure.Engineering Mechanics,2011;28(6):103-109
4张鹏,张祥宁,邓宇,等.CFRP-PCPs复合筋混凝土连续梁承载力试验研究.科学技术与工程,2016;16(31):250-254,269Zhang Peng,Zhang Xiangning,Deng Yu,et al.Study on the bearing capacity of CFRP-PCPs composite reinforced concrete continuous beams.Science Technology and Engineering,2016;16(31):250-254,269
5季园园,韩庆华,芦燕,等.CFRP在土木工程中的应用研究.结构工程师,2014;30(5):210-219Ji Yuanyuan,Han Qinghua,Lu Yan,et al.Application research of CFRP in civil Engineering.Structural Engineering,2014;30(5):210-219
6童谷生,陈博文,赖泽坤.真空辅助成型工艺下纤维增强复合材料与混凝土界面的粘结滑移试验研究.科学技术与工程,2018;18(20):315-319Tong Gusheng,Chen Bowen,Lai Zekun.Experimental study on bond slip between fiber reinforced polymer and concrete interface under vacuum assisted molding technology process.Science Technology and Engineering,2018;18(20):315-319
7蔡文华,郁步军,张继文,等.CFRP索悬挂建筑结构试点工程的设计与分析.建筑科学,2015;31(7):46-51Cai Wenhua,Yu Bujun,Zhang Jiwen,et al.Design and analysis on the pilot project of CFRP cable suspended structure.Building Science,2015;31(7):46-51
8蔡文华,郁步军,张继文,等.国内首幢CFRP索悬挂建筑结构施工技术.施工技术,2015;44(21):47-50Cai Wenhua,Yu Bujun,Zhang Jiwen,et al.Construction technology of the first CFRP cable suspended structure in China.Construction Technology,2015;44(21):47-50
9蔡文华,郁步军,张继文,等.CFRP索悬挂结构试点工程施工力学分析.施工技术,2016;45(20):28-31Cai Wenhua,Yu Bujun,Zhang Jiwen,et al.Mechanical analysis of construction on the CFRP cable suspended structure pilot project.Construction Technology,2016;45(20):28-31
10周坚,伍孝波.核筒悬挂结构体系自振特性研究.工程力学,2005;22(1):75-81Zhou Jian,Wu Xiaobo.A study of model-frequency behavior of core-wall suspension structures.Engineering Mechanics,2005;22(1):75-81
11蔡文华.CFRP索悬挂减振结构静动力特性分析及应用研究.南京:东南大学,2014Cai Wenhua.Study on application and static&dynamic characteristics of CFRP cable vibration reduction.Nanjing:Southeast University,2014