既有线提速至160km／h桥梁评估的研究  

Evaluation Study on the Behavior of Existing Bridges Due to Speed Raise up to 160km/h

作　　者：张煅[1] 柯在田 邓蓉 谢毅[1] 

机构地区：[1]清华大学

出　　处：《中国铁道科学》1996年第1期9-20,共12页China Railway Science

摘　　要：本文对广深线、沪宁线提速至１６０ｋｍ／ｈ，桥梁评估的研究工作加以系统归纳，包括：桥梁普查；桥梁分类；选取典型桥跨作现场试验；利用车桥相互作用计算程序进行１６０ｋｍ／ｈ行车下的理论计算分析（包括桥梁的冲击系数、车体竖向加速度等），最后给出评估意见。通过跨度６４ｍ和３２ｍ钢桥的理论分析和现场实测结果，判定提速后钢梁桥跨的空间振动或共振现象，这一问题必须认真对待。From field bridge tests under the speeds up to 160km/h on Guangzhou-Shenzhen line and Shanghai-Naming line, a five-step procedure was developed to evaluate the behavior of existing bridges: regular inspection, classification, field test on typical span, theoretical calculation and analysis by the use of vehicle-bridge interaction calculation program (including impact factor, vertical acceleration of vehicles, etc), and final judgement.Theoretical analysis and field test results show that the speed raise can cause space vibration or resonance of structure. This problem demabds setious attention.

关 键 词：既有线 提速 桥梁评估 空间振动 共振 钢桥 

分 类 号：U448.361.3[建筑科学—桥梁与隧道工程] U292.43[交通运输工程—道路与铁道工程]