Bearing Strength to Existing Bridge 荷花 ; 旧桥承载力
an existing bridge 已建桥梁
the existing bridge 现有桥梁
Urban existing bridge 城市既有桥梁
existing bridge structure 既有桥梁结构
existing bridge structures 既有桥梁结构
Bridges are the hinges of traffic system ,playing an important role in the national economic and society. Along with the extension of the bridge service life, international community increasingly pay attention to the safety of the existing bridge .
桥梁是交通运输体系中的枢纽工程，在国民经济和社会生活中起着举足轻重的作用，随着桥梁使用寿命的延长，世界各国对既有桥梁结构的安全性日益关注，桥梁的评估工作已经成为桥梁工程研究迫切需要加强的领域。
参考来源 - 可靠度理论在简支梁旧桥评估与加固中的应用研究Reform scheme decision for the existing bridge is the process that makes a reasonable choice among a few given reform schemes for the bridge which are existing or need to be rebuilt and reinforced.
在役桥梁改造方案决策就是对正在使用的、需要改造加固的桥梁,在几种备选改造方案之间做出合理选择的过程。
参考来源 - 在役桥梁改造方案决策体系研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The time-varying reliability of existing bridge on bearing capacity was discussed based on fuzzy evaluation and Markov process.
基于模糊评价和马尔科夫过程，研究了在役桥梁承载力可靠度的时变规律。
Based on the practice, it presents the principles and calculations of the external prestressing applied to strengthen the existing bridge.
结合实践，介绍了体外预应力加固旧桥的原理及配筋计算方法。
Software is studied and programed for analyzing the ultimate bearing capacity of the new and old bridge, and appraising the existing bridge.
该软件主要用于新、老桥的极限承载能力分析以及桥梁现状的识别鉴定。
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