摘要
玻璃纤维增强复合材料(FRP)具有轻质、高强、减震、耐腐蚀等优良特性,已广泛应用于特殊环境中的桥梁工程。本文以FRP拉挤型材为主材料设计了一座跨度为10+10m的人行天桥,并采用有限元方法分别校核其受基本载荷、自由振动、地震冲击载荷时的力学响应。计算结果表明,该桥梁重量较小,具有较高的安全裕度和较自振频率,可有效缩短现场的施工周期。本文的分析结果对于FRP桥梁的设计具有一定的工程指导意义。
Due to the advantages such as lightweight, high-strength, damping, anti-corrosion, glass fiber reinforced plastic （FRP） has been widely used in bridge engineering severing in extreme environment. This work designed a 10m ＋ 10m span passenger bridge which mainly employs the pultrusion FRP, and verified its mechanical response to the static load, free vibration and earthquake impact load by the finite element method. The results show that the bridge has low weight, with high safety margin and the natural frequency of vibration, and can effectively shorten the construction period of the scene. The analysis results in this paper would be a certain engineering significance for the FRP bridge design.
出处
《玻璃钢／复合材料》
CAS
CSCD
北大核心
2014年第5期64-68,共5页
Fiber Reinforced Plastics/Composites
关键词
玻璃纤维增强复合材料
人行天桥
有限元法
桥梁设计
glass fiber reinforced plastic
passenger bridge
finite element method
bridge design
