既有建筑结构安全鉴定决策支持系统的研究

发布时间：2018-07-11 16:57

本文选题：既有建筑结构安全鉴定 + 决策支持系统(DSS)　；参考：《西南石油大学》2017年硕士论文

【摘要】：在中国经济繁荣与城乡住宅建造范围不断扩大的背景下,我国的建筑渐渐进入维修与加固阶段。据专业人员表示,目前国内约有三至五成建筑物的安全性会有所降低或是逐步进入功能衰退期,因而会较大程度的影响民众的生命与财产安全。而由此背景迅速发展的建筑结构鉴定与检测促使着学术界开始热衷于对结构安全性的研究。在工程中的结构安全鉴定实为工作量大且数据复杂的决策工作,为了方便结构安全鉴定工作的进行,实现准确、客观的决策,本文引入决策支持系统(Decision Support System,简称DSS)这一概念,在掌握建筑结构安全鉴定的知识理论和分析系统构架体系与组件原理的基础上,研究操作简单、目标明确、模型驱动、功能模块化的既有建筑结构安全鉴定决策支持系统,不但能改善目前安全鉴定行业的不足,也满足新时代下信息技术与决策科学的发展需求。本文以国内外在建筑结构安全鉴定与决策支持两个范畴的研究成果作为理论背景;通过分析既有建筑结构安全鉴定理论知识,结合既有建筑结构安全鉴定的特点,提出可拓层次分析法(Extension Analytic Hierarchy Process,简称EAHP)与云物元结合的安全性综合评价模型:其中EAHP来求解各指标的权重,克服了传统AHP的主观影响,简化了层次分析的步骤;云物元模型以云参数代替物元模型中特征的量值,保障了特征的模糊性与随机性,以云关联度反映各影响指标对各安全等级的关联性,辅助了既有建筑结构的安全性评价;基于对系统构架体系与组件原理的研究初步设计了既有建筑结构安全鉴定背景下的DSS,以两库三部件为系统的构架体系,主要通过采用Microsoft Office Access数据库管理系统、VC++环境下的MFC类库、ADO数据库访问与数值计算工具Matlab共同实现系统主要的功能;在DSS设计与安全性评价模型选择的基础上论文以某框架-剪力墙结构工程为应用实例,从数据的收集到系统的应用,再到最后的决策支持,详细介绍了系统应用的各个步骤,最终的评价结果与鉴定报告的比较进一步验证了该决策支持系统的准确性,能在较大程度上为决策者提供支持。
[Abstract]:Under the background of China's economic prosperity and the continuous expansion of urban and rural housing construction, Chinese buildings are gradually entering the stage of maintenance and reinforcement. According to professionals, at present, about 30 to 50 percent of buildings in China will be less safe or gradually enter a period of functional decline, which will greatly affect the safety of people's lives and property. The rapid development of building structure identification and detection in this context has prompted the academic community to become keen on the study of structural safety. In order to facilitate the work of structural safety appraisal and realize accurate and objective decision, the concept of decision support system (DSS) is introduced in this paper. On the basis of mastering the knowledge theory of building structure safety appraisal and analyzing the system frame system and component principle, the existing building structure safety appraisal decision support system with simple operation, clear target, model-driven and function modularization is studied. It can not only improve the shortcomings of the current safety appraisal industry, but also meet the development needs of information technology and decision science in the new era. Based on the theoretical background of domestic and foreign research on structural safety appraisal and decision support, this paper analyzes the theoretical knowledge of existing building structure safety appraisal and combines the characteristics of existing building structure safety appraisal. This paper puts forward a comprehensive evaluation model of the security of the combination of extension Analytic hierarchy process (EAHP) and cloud matter element, in which EAHP solves the weight of each index, overcomes the subjective influence of traditional AHP, and simplifies the step of analytic hierarchy process (AHP). Cloud matter-element model replaces the quantity value of feature in matter-element model with cloud parameter, which guarantees the fuzziness and randomness of feature, and reflects the relevance of each influence index to each safety grade by cloud correlation degree, which helps to evaluate the safety of existing building structure. Based on the research of system architecture and component principle, a DSS-based architecture system with two storeys and three components as the system is preliminarily designed under the background of safety appraisal of existing building structures. The main functions of the system are mainly realized by using Access database access and numerical calculation tool Matlab under the environment of Microsoft Office Access database management system (VC). On the basis of DSS design and safety evaluation model selection, this paper takes a frame-shear wall structure engineering as an application example, from the data collection to the application of the system, and then to the final decision support, introduces in detail the various steps of the system application. The comparison between the final evaluation results and the appraisal report further verifies the accuracy of the decision support system and can provide support to the decision makers to a large extent.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU317

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