摘要
本文以宽幅脊骨梁矮塔斜拉桥为背景,研究多车道汽车荷载在横向不同加载位置对结构的影响。采用ANSYS建立全桥实体模型,对活载的偏载效应进行分析。通过对不同车道数汽车荷载对称布载和偏载布载的对比分析,得到了不同车道数加载时结构偏载系数,并在此基础上提出了基于多车道数的偏载效应修正方法。该类型桥梁活载偏载系数在1.06～1.11之间。
Based on the low pylon cable-stayed bridge with wide spinal beam,the influence of horizontally loading positions on multi-lanes on the structure is studied.The large-scale universal finite element program ANSYS was used to set up the solid model of the whole bridge and the eccentric effect analysis of the live load on the bridge was analyzed.Through the comparative analysis between the symmetrical load mode and eccentric load mode of the multilane motor vehicle loading,eccentric coefficient of the structure on multilane motor vehicle loading is worked out.The correction method of the eccentric load effect is presented.The eccentric coefficient of this type of bridge is between 1.06 and 1.11.
出处
《土木工程与管理学报》
2012年第2期108-112,共5页
Journal of Civil Engineering and Management
关键词
矮塔斜拉桥
宽幅脊骨梁
活载
偏载效应
low pylon cable-stayed bridge
wide spinal beam
live load
eccentric load effect
