北方重力式码头耐久性检测评估系统的研究与实现

发布时间：2018-03-03 02:29

本文选题：北方　切入点：重力式码头　出处：《天津大学》2014年硕士论文　论文类型：学位论文

【摘要】：码头承建后就开始存在各种各样的问题。有的码头建成后未及时使用，停滞数年后又需重新使用时发现已有裂缝、锈蚀、冻融等各种破坏。有的码头在使用过程中出现混凝土麻面、剥落、掉皮、防腐措施失去作用等问题，导致混凝土结构耐久性能降低。那么在码头重新启用或继续使用前都需对码头的耐久性能进行检测和评估。近几年由于港口运输能力的急速扩张，我国交通部持续推行提升码头靠泊能力的码头结构加固改造工程建设，在码头加固改造设计方案提出之前，对码头混凝土结构耐久性进行检测和评估也是必不可少的一项内容。码头的耐久性评估主要根据对混凝土物理性能、耐久性能的检测得出的直接结论采用一定的评估分析方法对码头混凝土结构耐久性进行分级。目前现行三本水运行业标准均对北方重力式码头耐久性检测和评估方法进行了规定，但在具体检测参数和检测数量上略有差别，对于混凝土抗氯离子渗透性和抗冻融性的检测方法还不够全面，对于提高检测准确性和检测效率方面也存在不足之处。本文结合目前现行国家、水运、铁路标准的规定，对北方重力式码头从检测参数、检测方法、检测数量、评估方法等方面在现有标准的基础上进行归纳和补充，，使建立在混凝土检测技术上的北方重力式码头耐久性评估评估系统更全面，更有操作性。本文提出的检测评估系统已经在日照港西12泊位进行验证，可以成为需加固改造码头耐久性能现状的依据。
[Abstract]:Wharf began construction after the problems of all kinds. Some time after completion of the terminal is not used, after years of stagnation and the need to use existing cracks, corrosion, freeze-thaw damage. Some concrete pier pits, in the process of using peeling, peeling, problem of anti-corrosion measures lost, resulting in reduce the durability of concrete structures. Then at the dock re enabled or continue to use before the durability of the terminal are required for detection and evaluation.
In recent years due to the rapid expansion of port transport capacity, China's Ministry of transportation to continue the implementation of wharf structure to improve the ability of berthing pier in reinforcement engineering construction, reinforcement and puts forward renovation design scheme before the detection and assessment of the pier concrete structure durability will also a content of not less.
The durability evaluation of wharf is mainly based on the direct conclusion of physical performance and durability test of concrete, and a certain assessment and analysis method is adopted to classify the durability of wharf concrete structure.
At present, the industry standard of three water north of gravity wharf Durability Detection and evaluation method of the regulations, but slightly in the specific number of detection parameters and detection of different detection methods for chloride ion permeability of concrete and freeze-thaw resistance is not comprehensive, to improve the detection accuracy and detection efficiency also exist shortcomings.
According to the current national standards, water transport, the provisions of the railway, to the north of gravity wharf from detection parameters, detection method, detection number, assessment methods and so on were summarized and supplemented based on the existing standards, so the gravity wharf built on concrete durability detection technology evaluation system is more comprehensive, more operation.
The test and evaluation system proposed in this paper has been verified in the West 12 berth of Rizhao Port, which can be used as the basis for strengthening the status of the durability of the wharf.

【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U656.111

【共引文献】