共查询到18条相似文献,搜索用时 203 毫秒
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分析了绿色建筑评价的影响因素,建立了未确知测度模型对其进行综合评价,采用信息熵的理论给出各影响因素的权重,并运用未确知测度模型对某一建筑进行绿色等级综合评价,验证了该评价法的可行性和可操作性。 相似文献
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由于建筑施工质量对安全可靠性影响程度的不确定性信息较多,且一般的确定方法又不易将各种不确定性和定量综合指标综合起来判定,往往导致判定结果失真。针对此问题,给出未确知测度、置信度的概念,建立了基于未确知测度的建筑施工质量对安全可靠性影响度确定模型。通过工程实例验证,该模型在处理不确定性影响因素时,丢失信息少,更实用、可靠。 相似文献
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利用未确知测度评价建筑企业信用等级 总被引:1,自引:0,他引:1
分析了建筑企业信用等级的影响因素,建立了未确知测度模型,对其进行综合评价,采用信息熵的理论给出各影响因素的权重,应用一个实际例子说明了此模型的可行性。 相似文献
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介绍了福建省在公路隧道建设方面的主要成就,阐述了不同地质条件下隧道的典型突涌案例,同时,针对典型突涌案例的推理,构建了公路隧道突涌灾害的风险标价指标体系;针对评价指标的多参数性和不确定性,提出了基于未确知测度与信息熵的隧道突涌安全风险评价的未确知测度模型,并分别建立突涌评价指标的未确知测度函数和评价指标权重,依据置信度... 相似文献
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为实现对光伏发电项目应急能力的系统分析和科学评估,基于未确知数学原理,结合施工作业特点,构建光伏发电项目应急能力成熟度评估模型。利用成熟度理论划分光伏发电项目应急能力成熟度等级,并建立评估指标体系;应用盲数和未确知测度理论改进未确知测度模型,融合熵权法建立量化的应急能力成熟度等级测度方法。结合某光伏发电项目评估其应急能力成熟度,结果表明改进方法适用性强、便于操作、贴近实际情况;利用评估指标成熟度雷达模型图,直观找出应急管理过程中的薄弱环节,实现应急精细化管理。 相似文献
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根据混凝土结构耐久性包含众多未确知性的特点,选择最能影响结构耐久性的因素作为评估指标,定义了指标未确知测度以及指标对确定构件耐久性等级所起作用大小的指标分类权重,建立了构件耐久性未确知综合评估系统;采用层次分析法,计算各构件对整体结构耐久性的重要性权重.建立了未确知综合评估系统与AHP相结合的混凝土结构耐久性评估模型.应用实例表明,所建模型的正确性和适用性. 相似文献
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建筑工程施工安全事故的未确知综合评价 总被引:1,自引:0,他引:1
建立建筑工程施工安全事故评价指标体系。引入信息熵确定各评价指标权重,并采用置信度识别准则,建立了未确知测度模型。对建筑工程施工安全事故进行分析与评价。通过实证分析的方法进行实例检验与应用,结果表明,运用未确知测度评价方法评价和预防建筑工程施工安全事故是有效和可行的。提供了一条定量、定性相结合的建筑工程施工安全事故综合评价的新途径。 相似文献
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In the last years, the attention on integrated analysis of sewer networks, wastewater treatment plants and receiving waters has been growing. However, the common lack of data in the urban water-quality field and the incomplete knowledge regarding the interpretation of the main phenomena taking part in integrated urban water systems draw attention to the necessity of evaluating the reliability of model results. Uncertainty analysis can provide useful hints and information regarding the best model approach to be used by assessing its degrees of significance and reliability. Few studies deal with uncertainty assessment in the integrated urban-drainage field. In order to fill this gap, there has been a general trend towards transferring the knowledge and the methodologies from other fields. In this respect, the Generalised Likelihood Uncertainty Evaluation (GLUE) methodology, which is widely applied in the field of hydrology, can be a possible candidate for providing a solution to the above problem. However, the methodology relies on several user-defined hypotheses in the selection of a specific formulation of the likelihood measure. This paper presents a survey aimed at evaluating the influence of the likelihood measure formulation in the assessment of uncertainty in integrated urban-drainage modelling. To accomplish this objective, a home-made integrated urban-drainage model was applied to the Savena case study (Bologna, IT). In particular, the integrated urban-drainage model uncertainty was evaluated employing different likelihood measures. The results demonstrate that the subjective selection of the likelihood measure greatly affects the GLUE uncertainty analysis. 相似文献
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随着光伏发电的技术越来越成熟,成本逐渐降低,光伏发电系统作为主动式节能被大量的运用到建筑中。然而,由于建筑本身及其环境控制系统的复杂性,单凭设计师的经验和简单的计算方法无法确保预估的光伏发电系统能效的准确性。尤其是在设计前期以及后期系统运行和管理过程中,光伏发电提供能效的作用是否被夸大,其能效与实际情况是否一致,能否给予相对准确的预估都是研究的源起。利用建筑模拟作为研究手段,对光伏发电系统不确定性分析,将不确定性考虑到能耗之中,是建筑节能的关键之一。研究以目前发表的相关研究为基础,创新性地总结和定量了目前最流行和准确的"五参数模型"的不确定性,对现阶段建筑中利用光伏发电系统的能效评价具有实践性的参考作用。 相似文献
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There has been recent interest in differentiating aleatory and epistemic uncertainties within the structural engineering context. Aleatory uncertainty, which is related to the inherent physical randomness of a system, has substantially different effects on the analysis and design of structures as compared with epistemic uncertainty, which is knowledge based. Bayesian techniques provide powerful tools for integrating, in a rigorous manner, the two types of uncertainties. In a purely probabilistic viewpoint, the uncertainties merge, resulting in widened probability densities. From the viewpoint of design or experimentation, however, the two types of uncertainties have widely different effects. The purpose of this paper is to develop insight into these effects, using Bayesian-based analytical expressions for the aleatory and epistemic uncertainties. The paper goes beyond standard Bayesian conjugate distributions by incorporating the effects of model uncertainty, where the applicability of two or more analytical models are used to describe the structure of interest. The influence of multiple model uncertainties is explored for two problems: the Bayesian updating process as data is acquired, and the design of simple parallel systems. 相似文献
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通过对公称直径20mm的HPB235热轧光圆钢筋抗拉强度的测量不确定度的研究,运用不确定度的数学模型,确定影响试验结果的各项因素,并对各因素形成的不确定度分量进行分析、计算,求出合成标准不确定度和扩展不确定度。 相似文献