碳纤维增强复合材料索对悬挂结构静力性能的影响分析  

Analysis of the Influence of Carbon Fiber Reinforced Composite Cable on the Static Performance of Suspended Structure

作　　者：蔡文华[1] 郁步军[1] 梁书亭[2] CAI Wen-hua;YU Bu-jun;LIANG Shu-ting(College of Civil Engineering, Yancheng Institute of Technology, Yancheng 224003, China;Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education, Southeast University, Nanjing 210096, China)

机构地区：[1]盐城工学院土木学院,盐城224003 [2]东南大学混凝土及预应力混凝土结构教育部重点实验室,南京210096

出　　处：《科学技术与工程》2018年第36期238-244,共7页Science Technology and Engineering

基　　金：国家自然科学基金(51508491;51478408)资助

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.

关 键 词：CFRP索 钢索 悬挂建筑结构 静力性能 

分 类 号：TU599[建筑科学—建筑技术科学]