CAJ | 학술논문

为研究空间扭背索斜塔斜拉桥与常规布索斜拉桥在力学性能上的差异，本文以一独柱斜塔空间扭背索斜拉桥为依托，采用数值算法，通过变换背索布索方式，对空间扭背索与扇形背索两种布索方式斜拉桥在静力性能、动力特性、稳定性方面的差异进行对比分析。研究结果表明：空间扭背索布索方式易造成索力分布不均匀，主梁弯矩、应力偏大等问题；相对于扇形背索，空间扭背索布索方式的斜拉桥整体刚度较小；稳定性方面二者区别不大。总体而言，空间扭背索斜拉桥在受力上基本合理，但是在获得一定视觉效果的同时，其力学性能有所降低。
위연구공간뉴배색사탑사랍교여상규포색사랍교재역학성능상적차이，본문이일독주사탑공간뉴배색사랍교위의탁，채용수치산법，통과변환배색포색방식，대공간뉴배색여선형배색량충포색방식사랍교재정력성능、동력특성、은정성방면적차이진행대비분석。연구결과표명：공간뉴배색포색방식역조성색력분포불균균，주량만구、응력편대등문제；상대우선형배색，공간뉴배색포색방식적사랍교정체강도교소；은정성방면이자구별불대。총체이언，공간뉴배색사랍교재수력상기본합리，단시재획득일정시각효과적동시，기역학성능유소강저。
T he performance difference between cable-stayed bridge with space-twisting back cables and conventional cable-stayed bridge was compared. A space-twisting back cable stayed bridge with a leaning tower was studied using numerical analysis. W ith the change of the layout of back cables,the static performance,dynamic characteristics and the stability of the two types of cable-stayed bridges were different. By comparison,the disadvantages of the space-twisting back cable stayed bridge include uneven distribution of cable force,larger moment and stress in girders and lower stiffness. But the stability of the two types of bridges is almost the same. In general,the performance of the space-twisting back cable stayed bridge is reasonable. As the sacrifice for amazing vision beauty,its performance is not as good as that of the conventional cable-stayed bridge.