公路桥梁现场检测与技术状况评定

发布时间：2018-01-26 22:43

本文关键词： 桥梁现场检测技术状况评定方法　出处：《郑州大学》2016年硕士论文　论文类型：学位论文

【摘要】：桥梁是交通设施互联的关键节点和枢纽工程,是国民经济发展和人民生活的重要保障,确保桥梁安全和正常使用意义重大。但由于环境和荷载等的长期作用和影响,桥梁在服役过程中不可避免的会出现各种形式的病害或缺陷,及时掌握桥梁的实际技术状况并采取有效的措施加以防护,对于桥梁的安全运行至关重要。为此,本文以杭浦高速公路桥梁检测以及鉴湖大桥检测项目为依托,通过理论研究和工程实践,开展了桥梁检测与技术状况评定研究。主要研究内容如下：(1)以鉴湖大桥为例研究探讨了在役梁桥现场检测的内容、方法、流程和注意事项,并结合动静载试验对该桥梁技术状况进行了科学评价。(2)综合运用《公路桥梁技术状况评定标准》(JTG/TH21-2011)和中国公路桥梁管理系统(CBMS)对杭浦高速桐九立交桥进行了技术状况评定。(3)将层次分析法和群决策法有机结合,建立了梁桥技术状况评价层次模型,提出了改进的在役桥梁技术状况评定方法,给出了扣分值系数和新扣分值表,并将评价模型运用于实例。应用结果表明：将原桥梁总体技术状况评分值与新的得分值相比较,可知新评价模型的得分与规范的评价得分非常接近,并且新评价模型的得分随着原得分的增长而提高,原得分越接近满分新分数的数值也越高,原得分越低新分数将更低。这与“弱化小病害、强化大病害”的优化思路是一致的。
[Abstract]:Bridge is the key node and key project of transportation facilities interconnection, and it is an important guarantee for the development of national economy and people's life. It is of great significance to ensure the safety and normal use of bridges. However, due to the long-term effects of environment and load, the bridge will inevitably appear various forms of diseases or defects in the course of service. To grasp the actual technical situation of the bridge and take effective measures to protect the bridge is very important for the safe operation of the bridge. Therefore, this paper relies on the bridge detection of Hangpu Expressway and the Jianhu Bridge Test Project. Through theoretical research and engineering practice, the bridge detection and technical status evaluation research is carried out. The main research contents are as follows: 1) taking Jianhu Bridge as an example, the contents and methods of in-service beam bridge field detection are discussed. Procedures and considerations. The technical condition of the bridge is evaluated scientifically by combining dynamic and static load test. (2) Comprehensive application of the Standard for evaluating the Technical condition of Highway Bridges (JTG / TH21-2011). And China Highway and Bridge Management system (CBMS) to the Hangpu expressway Tongjiu overpass technical status assessment. 3) Analytic hierarchy process (AHP) and group decision method are organically combined. The evaluation hierarchy model of girder bridge technical condition is established, and the improved evaluation method of technical condition of existing bridges is put forward. The coefficient of deduction value and the new deduction value table are given. The application results show that the new evaluation model is very close to the standard one by comparing the original bridge total technical status score with the new one. And the score of the new evaluation model increases with the increase of the original score, and the value of the original score approaching the full score is higher, the lower the new score is, the lower the new score will be. The optimization idea of strengthening the major disease is consistent.
【学位授予单位】：郑州大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U446

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