预应力混凝土梁桥受火灾后快速评定及修复技术研究
发布时间：2018-07-16 12:48
【摘要】：一混凝土梁桥受大火烧损,损坏严重。文中给出该桥损伤检测内容及快速评定方法(基于频率校验系数法)。快速评定方法准确给出6个损伤等级。火灾后的主要损伤形式为混凝土表面爆裂、钢筋弹性模量降低、结构承载力降低。根据桥梁受损状态给出相应的快速修复方法,对类似桥梁受火灾后快速评定及修复具有参考价值。
[Abstract]:A concrete girder bridge was badly damaged by fire. In this paper, the contents of damage detection and the fast evaluation method (based on the frequency check coefficient method) are given. Six damage grades were accurately given by the rapid assessment method. The main damage form after fire is crack of concrete surface, decrease of elastic modulus of steel bar and decrease of bearing capacity of structure. According to the damaged state of the bridge, the corresponding rapid repair method is given, which has reference value for the quick evaluation and repair of similar bridges after fire.
【作者单位】： 云南第二公路桥梁工程有限公司;江西省交通科学研究院;
【分类号】：U445.7
，
本文编号：2126439
[Abstract]:A concrete girder bridge was badly damaged by fire. In this paper, the contents of damage detection and the fast evaluation method (based on the frequency check coefficient method) are given. Six damage grades were accurately given by the rapid assessment method. The main damage form after fire is crack of concrete surface, decrease of elastic modulus of steel bar and decrease of bearing capacity of structure. According to the damaged state of the bridge, the corresponding rapid repair method is given, which has reference value for the quick evaluation and repair of similar bridges after fire.
【作者单位】： 云南第二公路桥梁工程有限公司;江西省交通科学研究院;
【分类号】：U445.7
，
本文编号：2126439
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