CAJ | 학술논문

以一主跨278 m,桥面宽4 m的钢桁架加劲梁窄桥面悬索桥--新疆赛吾迭格尔大桥为工程背景,对窄桥面悬索桥的风致抖振响应进行有限元仿真模拟分析,并对可能影响抖振分析结果的非线性因素进行了分析.分析结果表明:对于该类型悬索桥,结构的大变形效应对抖振响应影响为负,计算动力响应可以偏保守不考虑结构的大变形,各因素对主梁各方向抖振响应的影响各不相同,抖振对横向位移的影响比较大,应该重点考虑.
이일주과278 m,교면관4 m적강항가가경량착교면현색교--신강새오질격이대교위공정배경,대착교면현색교적풍치두진향응진행유한원방진모의분석,병대가능영향두진분석결과적비선성인소진행료분석.분석결과표명:대우해류형현색교,결구적대변형효응대두진향응영향위부,계산동력향응가이편보수불고필결구적대변형,각인소대주량각방향두진향응적영향각불상동,두진대횡향위이적영향비교대,응해중점고필.
Backgrounded by the Saiwudiegeer Bridge in Xinjiang, a steel truss stiffening girder suspension bridge having a main span 278 m and a narrow deck width 4 m, the finite element simulation analysis is made for the wind-induced buffeting response of the type of the bridges and the nonlinear factors that may have influence on the results of the analysis are analyzed. The results of the analysis indicate that for the type of the bridges, the influence of the large deformation effect of the structures in relation to the buffeting response is negative, the calculated dynamic response can be slightly conservative, not taking into account of the large deformation effect and the influence of various factors on the buffeting response along different directions of the stiffening girders is not the same. However, the buffeting has considerable influence on the lateral displacement, which should be considered particularly.