基于BIM技术的外保温体系热桥热工性能分析研究

发布时间：2018-02-05 19:47

本文关键词： 贯通式热桥传热 BIM 建筑能耗模拟　出处：《河北工业大学》2013年硕士论文　论文类型：学位论文

【摘要】：建筑能耗在社会总能耗中占据了很大的比例，伴随着我国经济的飞速发展，人们对建筑领域的节能降耗提出了更高的要求。建筑外保温技术作为一种重要的保温节能手段被广泛使用。以干挂石材幕墙为代表的外保温层中通常存在的钢连接件作为一种贯通式的热桥，是热量大量散失的通道，因此对此种建筑热桥传热的研究十分重要。我国目前设计普遍采用二维CAD技术作为辅助手段对热桥传热进行计算和保温补偿设计，设计中建筑的平面和立面以及详图都是分开的，很难对具体的耗能部位及耗能状况进行量化分析。而以三维建筑信息模型为中心的BIM技术利用三维绘图工具，能够对建筑设计的各个方面、各种部位进行详细的描述，在准确描述节点构造的基础上，提供不同形式的接口与各种分析软件协同对接，，可进行建筑能耗模拟，实现建筑能耗的定量化分析。基于上述优点，BIM技术将是未来建筑设计与能耗模拟的一个重要途径。本文首先针对石材幕墙外保温体系存在的贯通式热桥，采用多回路热桥传热测试仪，在现场进行冬季工况实测分析，获得实际案例的温度分布及传热实际数据作为下一步模拟的依据；并且，采用建筑能耗模拟技术的研究方法，以实际工程中采用的干挂石材幕墙金属连接件和预埋件为原型，通过对建筑的精确建模，正确赋予建筑物模型材质以及环境参数，得到与实际建筑一致的建筑模型，依据IFC标准将模型导入模拟分析软件进行传热模拟分析。通过实测和模拟，探索整套的BIM思维方式下的热桥模拟方法。本文的研究成果是使用BIM技术建立热桥的传热模拟分析提供了一定的理论指导。通过深入研究建筑外围护结构热桥的传热过程，精确模拟石材幕墙热桥传热为建筑节能提供一种新的研究方法。本文的工作将为落实环保低碳的设计理念，促进建筑节能设计具有一定的理论和实践的指导意义。
[Abstract]:Building energy consumption occupies a large proportion in the total social energy consumption, along with the rapid development of our economy. People have put forward higher requirements for energy saving and consumption reduction in the field of building. As an important means of heat preservation and energy saving, the external insulation technology is widely used. The steel connection usually exists in the outer insulation layer represented by the dry hanging stone curtain wall. The connectors are used as a through type of hot bridge. It is important to study the heat transfer of this kind of thermal bridge because it is a channel with a large amount of heat loss. At present, two-dimensional CAD technology is widely used in the design of thermal bridge heat transfer calculation and thermal insulation compensation design, the design of the building's plane, facade and detail drawings are separated. It is difficult to analyze the specific energy consumption parts and energy dissipation status quantitatively, but the BIM technology, which takes the three-dimensional building information model as the center, can make use of the three-dimensional drawing tool to make use of the various aspects of the architectural design. On the basis of accurate description of node structure, various parts are described in detail, and different forms of interface are provided to coordinate with various analysis software, which can be used to simulate building energy consumption. Based on the above advantages, BIM technology will be an important way of building design and energy consumption simulation in the future. In this paper, first of all, in view of the existence of the stone curtain wall heat preservation system through the heat bridge, using multi-loop heat bridge heat transfer tester, on the spot to carry out the field analysis of the winter conditions. The actual data of temperature distribution and heat transfer are obtained as the basis of the next simulation. In addition, using the research method of building energy consumption simulation technology, taking the dry-hanging stone curtain wall metal connection and embedded parts as the prototype, through the accurate modeling of the building. According to the IFC standard, the model is imported into the simulation analysis software for heat transfer simulation analysis. To explore the whole BIM thinking mode of thermal bridge simulation method. The research result of this paper is that the heat transfer simulation analysis of the thermal bridge with BIM technology provides a certain theoretical guidance. Through in-depth study of the heat transfer process of the thermal bridge outside the building envelope structure. Accurate simulation of heat transfer of stone curtain wall provides a new research method for building energy saving. The work of this paper will be for the implementation of the design concept of environmental protection and low carbon. To promote the building energy-saving design has a certain theoretical and practical significance.
【学位授予单位】：河北工业大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU111;TU17

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