CAJ | 학술논문

介绍了国内首座CFRP索斜拉桥的工程概况;建立了该桥的三维空间梁壳杆系有限元动态分析模型,进行了结构动态特性有限元分析;进行了环境激励下国内首座CFRP索斜拉桥结构动态特性的测试,结合试验结果对国内首座CFRP索斜拉桥的动态特性进行了分析.同时,将实桥动态试验结果与有限元动态特性分析结果进行了对比分析.结果表明,有限元动态特性分析的低阶频率和振型与试验测得的频率与振型结果基本吻合.笔者等试验及相关研究分析结论可为CFRP索桥梁的动态建模、动态特性分析、抗震抗风设计及CFRP新型缆索材料在桥梁工程中的进一步推广应用提供一定的参考依据.
개소료국내수좌CFRP색사랍교적공정개황;건립료해교적삼유공간량각간계유한원동태분석모형,진행료결구동태특성유한원분석;진행료배경격려하국내수좌CFRP색사랍교결구동태특성적측시,결합시험결과대국내수좌CFRP색사랍교적동태특성진행료분석.동시,장실교동태시험결과여유한원동태특성분석결과진행료대비분석.결과표명,유한원동태특성분석적저계빈솔화진형여시험측득적빈솔여진형결과기본문합.필자등시험급상관연구분석결론가위CFRP색교량적동태건모、동태특성분석、항진항풍설계급CFRP신형람색재료재교량공정중적진일보추엄응용제공일정적삼고의거.
An engineering survey of the first cable - stayed bridge using CFRP cables was firstly introduced;then a three -dimensional computational finite element dynamic model based on beam elements,shell elements and bar elements of above CFRP cable stayed bridge was modeled and a structure dynamic property analysis was put up;lastly a dynamic property test under ambient excitation was put up to analyze the dynamic characteristics of the first cable - stayed bridge using CFRP cables in China,at the same time,a contrast analysis between test results and calculational results of finite element method was presented.The analysis result shows the low order vibratory frequency and mode are basically tallied between test results and calculational results of finite element method.The test and analysis results of this paper could provide reference for dynamic modeling and characteristic analyzing,seismic and wind loads resistance designing of CFRP cable - stayed bridge,also it could provide reference for the further engineering application of CFRP material used as cables on bridge structure by all means.