既有建筑外保温系统性能检测与评价方法研究

发布时间：2018-04-09 13:38

本文选题：既有建筑　切入点：外墙外保温系统　出处：《山东建筑大学》2017年硕士论文

【摘要】：外墙外保温系统具有保温隔热性能好、自重轻、性价比高等优点,在北方地区的外围护结构中得到了广泛的应用。但在使用过程中也出现了许多工程质量问题,如开裂、空鼓、渗水等,其中最严重的是系统的防火问题与脱落问题,甚至威胁到了人们的生命与财产安全,逐渐引起了行业内的关注。本文对目前常用的外墙外保温系统的构造组成、性能优缺点、工程应用现状及存在问题进行了调研,分析了外保温系统出现问题的原因。结合现行规程的规定,分析了系统的性能要求,确定了既有建筑外保温系统性能检测的类型;在系统性能影响因素分析的基础上,提出了连接安全性、防火安全性、保温功能性与美观耐久性的检测内容,并基于检测技术的可实施性,确定与各检测内容相对应的检测项目,给出了各检测项目的抽样方案、检测方法和技术要求。对外保温系统性能评价的功能及适用范围的进行了分析;基于系统常用评价方法调研,针对外保温系统性能检测结果定性指标和定量指标并存的现状,确定了分层分等级的评价方法,建立了外保温系统综合性能评价指标体系;基于评价结果的处理措施,提出了评价标准与评价程序;并根据检测项目定级结果,对外保温系统的单项性能和综合性能进行了评级。以聚苯板和岩棉板薄抹灰外墙外保温系统为研究对象,在工程概况调研与相关资料核查的基础上,确定了系统连接安全性检测项目,并根据检测结果对外保温系统的连接安全性进行了评级,验证外保温系统连接安全性检测与评价方法的科学性、可靠性与可操作性,为治理外墙外保温系统质量缺陷,提高外保温系统的连接安全性提供了理论支持。
[Abstract]:The exterior wall insulation system has many advantages, such as good thermal insulation performance, light weight, high cost performance and so on. It has been widely used in the outer envelope structure of the northern area.However, there are many engineering quality problems in the process of use, such as cracking, empty drum, water seepage and so on. The most serious problem is the fire prevention and shedding of the system, and even threatens the safety of people's life and property.Gradually attracted the attention of the industry.In this paper, the structural composition, performance advantages and disadvantages, engineering application status and existing problems of the external insulation system are investigated, and the causes of the problems are analyzed.Combined with the current regulations, the performance requirements of the system are analyzed, and the types of performance testing for the external insulation system of existing buildings are determined, and on the basis of the analysis of the influencing factors of the system performance, the safety of connection and fire prevention is put forward.Based on the practicability of testing technology, the test items corresponding to each test content are determined, and the sampling scheme, detection methods and technical requirements of each test item are given.The function and application scope of performance evaluation of external thermal insulation system are analyzed, and based on the investigation of common evaluation methods, the present situation of qualitative index and quantitative index of external thermal insulation system performance test results are analyzed.The evaluation method of hierarchical grading is determined, and the comprehensive performance evaluation index system of external insulation system is established. Based on the treatment measures of the evaluation results, the evaluation criteria and procedures are put forward, and according to the grading results of the test items, the evaluation criteria and procedures are put forward.The single performance and comprehensive performance of the external insulation system are rated.Taking the external thermal insulation system of the outer wall of polystyrene and rock wool plastering as the research object, based on the survey of the general situation of the project and the verification of the relevant data, the safety test items of the system connection are determined.According to the test results, the connection safety of the external insulation system is rated, and the scientific, reliable and operable methods of the external insulation system connection safety detection and evaluation are verified, in order to control the quality defects of the external wall external insulation system.Improving the connection safety of the external insulation system provides theoretical support.
【学位授予单位】：山东建筑大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU111.41

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