辽宁地区浅基础桥梁安全性评价及加固研究

发布时间：2018-01-09 19:12

本文关键词：辽宁地区浅基础桥梁安全性评价及加固研究　出处：《沈阳建筑大学》2014年硕士论文　论文类型：学位论文

【摘要】：科学技术的发展与社会的进步促进了交通基础设施的建设,一座座桥梁如雨后春笋般屹立于祖国大地,同时辽宁地区既有浅基础桥梁由于勘察设计、施工管理、养护维修等原因出现不同程度的病害,大批桥梁亟待检测、维修加固。如何合理的认识和分析桥梁病害,并为之提供有效可靠的加固维修方案尤为重要。本文以辽宁地区既有浅基础桥梁为背景,就浅基础桥梁基础病害进行调查和分析,提出利用树根桩对浅基础桥梁基础进行加固维修展开研究,本文的主要研究内容有：1、在查阅国内外相关文献的基础上,详细介绍桥梁基础病害分析及加固研究的现状。2、对辽宁地区浅基础桥梁进行调研,综合分析浅基础桥梁基础病害成因,并归纳总结,提出常见问题的维修加固方案。3、利用层次分析法建立辽宁地区浅基础桥梁安全评价模型,分别考虑桥梁设计标准及修建年限、桥梁基础完整程度、结构承载能力、外观评价和钢筋混凝土腐蚀情况等因素,分别计算其对桥梁结构的重要性、大小性、修复性、容易性、稳定性、和发展性的权重值。得出影响辽宁地区浅基础桥梁的关键因素,为其维修加固提供依据,提出辽宁地区浅基础桥梁基础加固维修的基本原则和加固方法。4、简单介绍树根桩在浅基础桥梁基础维修加固中的优点及加固机理,运用树根桩对辽宁某浅基础桥梁基础进行加固维修,详细的介绍了加固设计和加固施工方法。分析加固施工过程中常见问题及处理办法,为树根桩在辽宁地区浅基础桥梁基础加固中提出指导性意见。
[Abstract]:With the development of social science and technology progress to promote the construction of transportation infrastructure, such as bridges that stand in the motherland like bamboo shoots after a spring rain, at the same time, Liaoning area has a shallow foundation of bridge for survey and design, construction management, maintenance and other reasons there are different degrees of disease, a large number of bridges need to detect, recognize and bridge maintenance and reinforcement. How to reasonable analysis of disease, is particularly important and provides effective and reliable solutions for strengthening maintenance. Taking Liaoning area has a shallow foundation of bridge as the background, investigation and analysis of bridge foundation disease, put forward to the shallow foundation of bridge foundation reinforcement and repair of the root pile, the main contents of this paper are 1, based on the related literature at home and abroad, introduces the analysis of bridge foundation diseases and strengthening of the status of.2 in Liaoning area, shallow foundation of bridge of Liang Jin Research, comprehensive analysis of shallow foundation of bridge foundation and summarize the causes of disease,.3, maintenance and reinforcement scheme put forward common problems, using the AHP evaluation of shallow foundation of bridge safety in Liaoning model respectively considering the bridge design standard and construction period, bridge foundation integrity, the load-carrying capacity of the structure, appearance evaluation and reinforced concrete the corrosion situation and other factors, calculate its importance, the size of the bridge structure, easy repair, stability, and development, weight value is obtained. The key factors affecting the shallow foundation of bridge in Liaoning area, and provide the basis for the maintenance and reinforcement, put forward the basic principle of maintenance and reinforcement of bridge foundation reinforcement and shallow foundation in Liaoning area methods.4, brief introduction of root pile and reinforcement mechanism of shallow foundation of bridge foundation reinforcement in the advantages of maintenance, application of root pile in Liaoning shallow foundation of bridge foundation Solid maintenance is introduced in detail. Reinforcement design and reinforcement construction methods are introduced in detail. Common problems and treatment methods in strengthening construction process are analyzed, and guiding opinions for root pile in reinforcement of Shallow Foundation Bridge Foundation in Liaoning area are put forward.

【学位授予单位】：沈阳建筑大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U446;U445.72

【参考文献】