铁路桥梁体外预应力索的横向振动控制

Transversal Vibration Control of External Tendons Used on Railway Bridge

详细计算了体外预应力混凝土梁中常用型号体外索的自振特性,介绍了铁路混凝土梁的实测自振频率。基于体外索、混凝土梁的自振特性分析,从防止体外索、梁发生共振的角度出发,提出了防止设计体外索发生过大振动的建议。

Vibration characteristics of external tendons used on external prestressing concrete beams are detailedly calculated. Also the tested vibration characteristics of railway concrete beams are presented. Based on the analysis of vibration characteristics of external tendons and concrete beams, two design conclusions that can prevent the sympathetic vibration of external tendons and concrete beams are given.