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.
并利用本系统就均匀初始场、加密观测资料和常规报文资料作为非均匀初始场分别进行了模拟试验。
The system has been used to perform numerical test according to homogeneous initial fields and inhomogeneous initial fields, which was showed by intensive and conventional observation data.
经反复修改和试验，设计出一种比较合理的灵活的复杂观测系统。
A complicated but appropriate and effective layout was designed after many experiments and modifications were made.
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