大跨度网状吊杆与直吊杆钢箱系杆拱桥力学性能对比研究  

Comparative Study on Mechanical Properties of Long-span Steel Box Tied Arch Bridge with Mesh Boom and Straight Boom

作　　者：陶重民 TAO Zhongmin

机构地区：[1]安徽省交通规划设计研究总院股份有限公司,安徽合肥230088

出　　处：《上海公路》2025年第1期93-96,M0006,共5页Shanghai Highways

摘　　要：网状吊杆拱桥由于吊杆多次交叉,增大了结构刚度,使得其在竖向荷载作用下的变形更小。和直吊杆拱桥相比,在相同构件尺寸的前提下,拱肋和系梁的应力水平都更低,从而可以减少构件尺寸和用钢量。但网状吊杆拱桥的吊杆活载应力幅大于直吊杆拱桥,更需重视吊杆的疲劳设计。As the suspenders cross for many times,the structural stiffness of the network suspenders arch bridge is larger than that of the straight suspender arch bridge,thus reducing the component size and the amount of steel used since the stress level of the arch rib and tie beam is lower.However,the live-load stress range of the suspender of the network suspenders arch bridge is larger than that of the vertical suspenders arch bridge.More attention should be paid to the fatigue design of the boom.

关 键 词：网状吊杆 直吊杆 结构刚度 吊杆疲劳 

分 类 号：U44[建筑科学—桥梁与隧道工程]