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火灾后混凝土预应力桥梁检测试验与评估
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Abstract:
以常熟浒浦大桥为背景，对于火灾后预应力钢筋混凝土桥梁进行评估分析研究。从火灾裂缝、混凝土脱落、受力钢筋露筋等方面对于桥梁进行了火灾病害观测分析，通过混凝土强度测定、静力荷载试验和有限元分析，对于火灾后桥梁的承载能力进行了分析评估。结果表明受火区作用较严重的简支空心板力学性能下降明显。
Changshu Hupu
Bridge was taken as an example to test and evaluate the prestressed concrete
bridge after fire. On the fire crack, the concrete loss, and the reinforced
exposure, the bridge fire disease was observed and analyzed. Taking the
determination of concrete strength, static loading testing, and finite element
analysis, the carrying capacity of the bridge after fire was analyzed and
evaluated. The results showed that the simply-supported hollow slab mechanics
performance in seriously fired area declines obviously.
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