本文以桥梁仿真分析技术为主线，以整治效果为目标，以荷载试验和长期观测为检验手段，建立了既有钢桥裂纹安全检测评估系统。
Based upon finite element simulation analysis, load tests and long-term observation, a detection and evaluation system for old steel bridge safety was developed in this thesis.
仅用静力学方法对桥梁进行检测、评估，很难对新建桥梁和已有桥梁的安全性和使用寿命做出精确的评价。
It is very difficult to precisely evaluate the security and service life of the newly built bridge and the existing bridges using the static method only.
常规的桥梁荷载试验检测桥梁对于新桥投入使用前或桥梁受到意外损伤时的安全性评估具有积极的意义。
The routine bridge load monitoring system plays a very significant role in evaluating the safety performance of a new bridge before its operation or after unexpected damage.
于是桥梁结构的检测、监测就成为结构安全养护、正常使用的保证措施之一。
Therefore, detection and inspection of bridges have become one important guarantee that ensures safety maintenance and normal use of it.
因此，我们要对现役桥梁进行检测，确保其安全可靠。
Therefore, we need to bridge the active testing to ensure its safe and reliable.
于是桥梁结构的检测、评估和加固就成为结构安全养护、正常使用的保证措施之一。
Therefore, detection, evaluation and reinforce of Bridges have become one important guarantee that ensures safety maintenance and normal use of it.
在现阶段，桥梁健康检测、桥梁损伤识别和状态评估来确保结构设计寿命内的安全运营已成为关注的课题。
At this stage, the bridge health monitoring, damage identification and condition assessment to ensure that the structure of the safe operation within the design life has become a concern.
桥梁挠度测量是桥梁检测的重要组成部分，是桥梁进行安全性评价的一项重要指标。
Bridge deflection is not only an important part for bridge inspection, but also a vital index to evaluate bridge safety.
掌握桥梁的实际性能并采取相应的措施，以确保车辆安全运行及充分发挥桥梁的使用价值，对桥梁进行检测及承载能力的评定是必要的。
So, detection and evaluation of bridge are necessary. These can help mastering current situation and taking measures to ensure the safety and worth of bridges.
掌握桥梁的实际性能并采取相应的措施，以确保车辆安全运行及充分发挥桥梁的使用价值，对桥梁进行检测及承载能力的评定是必要的。
So, detection and evaluation of bridge are necessary. These can help mastering current situation and taking measures to ensure the safety and worth of bridges.
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