On the base of actual bridge observation and test research, this paper discusses the temperature stress effect to concrete box girders which caused by temperature load.
在实桥观测与试验研究的基础上，对温度荷载所产生的温度应力对混凝土箱梁的作用进行了探讨。
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.
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。
The paper demonstrate Sinfluence of air temperature change acting to concrete box beam on the base of observation and test of hte bridge.
本文在实桥观测与实验研究的基础上，论证了大气变温对混凝土箱梁的作用。
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