兰青线K146简支T梁动载试验检测研究  

Experimental Study on the T Beam Bridge in Lan-Qing K146 Line

作　　者：刘炳涛[1] 史青芬[1] 

机构地区：[1]胜利油田胜利工程建设(集团)有限责任公司,山东东营257000

出　　处：《山东交通学院学报》2010年第3期42-47,共6页Journal of Shandong Jiaotong University

摘　　要：采用动载实验判定兰青线K146简支T梁桥的承载能力,研究桥梁结构的强度及刚度特性。通过测试桥梁结构的自振频率和阻尼、跨中截面的最大竖向位移、正应力和支座截面的剪应力以及梁体在列车荷载作用下的横向、竖向振动特性,判断该桥梁的强度、刚度是否满足要求,并判断能否满足提速要求。The dynamic load tests were carried out on the T beam bridge in Lanqing Line, which studied the strength of the bridge structure and stiffness characteristics of the bridge structure. By testing the natural frequencies and damping, the largest cross-section of vertical displacement, and the stress, shear stress of the cross-section support beam body and the loads in the train of horizontal, vertical vibration characteristics todeter-mine whether the carrying capacity of the bridge to meet regulatory requirements, and verify the safety of bridges and reliability.

关 键 词：简支T梁 动载试验 回弹实验 行车安全 

分 类 号：U448.23[建筑科学—桥梁与隧道工程]