【作者】 田利辉；

【导师】 童丽萍；

【作者基本信息】 郑州大学 ， 工程力学， 2010， 硕士

【摘要】 当今世界范围内,能源紧缺,而建筑能耗在社会商品生产能耗所占的地位举足轻重,因此建筑节能对节省能源、缓解能源紧缺有显而易见的作用。而外墙能耗占建筑能耗40%左右,外墙外保温体系技术应运而生,但其因发展时间短,理论不成熟,诸多问题在近几年渐渐呈现出来。本文是以河南省重大公益科研计划项目(081100910400)、郑州市重大科技计划项目(082SGZS32079)以及郑州大学研究生科学研究基金(重点类A181)为依托,提出一种新的外墙外保温体系——聚氨酯小框体外墙外保温体系(下称小框体复合保温体系),通过有限元理论模拟方法来分析小框体复合板体系的热工性能、结构性能,最后提出细部构造措施。所做的研究主要包括以下几个方面：(1)提出新的外墙外保温隔热体系——小框体复合板体系,阐述小框体复合板体系的保温隔热原理,提出小框体复合板体系的建议施工工艺,指导现实施工。(2)从热工性能方面分析小框体复合板体系的传热过程,并和EPS薄抹灰体系对比,通过建立模型,加载,分别得出小框体复合板体系和EPS薄抹灰体系的热流密度。用热流密度这一指标说明小框体复合板体系的阻止热流传导的能力更强。(3)从结构方面分析小框体复合板的结构性能,通过有限元建立模型,加载,得到小框体复合板的x、y、z方向的变形及小框体复合板各组成部分的应力值,分析其变形值和变形趋势,说明小框体复合板结构的合理性。对应力相对材料强度较大的小区域提出构造措施,以扩散其应力大值。(4)从细部构造来改善小框体复合板体系细部的热工及结构性能。U型伸缩缝的提出既改变了外墙外保温体系的热工性能,同时也改善了伸缩缝的结构性能,使伸缩缝节点构造在满足热工性能的同时,伸缩缝节点能自由伸缩,复合结构要求。门窗洞口及阳角节点也满足热工和结构的要求。更多还原

【Abstract】 In today’s world, within the scope of the energy shortage, building energy consumption in social commodity production consumption accounts for an important position. Building energy saving has obvious effect to save energy. Because external energy consumption of building energy consumption accounts for about 40 percent, the technology of exterior insulation system has developed, the theoretical problems increasing in recent years.Relying on major public research projects in Henan Province (081100910400), major scientific and technological projects of Zhengzhou City (082SGZS32079) and the Graduate Research Fund of Zhengzhou University (focus class A181),this paper proposes a new kind of external thermal insulation system-the Polyurethane frame style exterior insulation system. The simulation method through finite element theory of composite system analyses the performance of thermal and the properties of structure of the small frame compound plate, and finally puts forward measures for detail. Research done mainly includes the following aspects:1) This paper puts forward a new exterior insulation system-the little box body system, and puts forward the principle of thermal insulation composite system of small frame, and guides practical construction.(2)From the thermal performance analysis of heat transfer process of small frame composite system and EPS plastered system through model, loads, small frame composite system and EPS plastered system heat flux. This index with heat flux shows the ability of the small frame composite system to prevent of heat transfer stronger.3) A structural analysis of small frame composite plates by finite element modeling, the paper gets the small frame composite plate x, y, z direction of the deformation and the small frame composite plate stress components, Analysis of the deformation and deformation trend, indicating the small frame composite plate is reasonable. Relative strength of material of stress of small area is proposed to spread its stress, great value.4) From detail structure to improve the small frame composite thermal and structure of the details of the system performance. The proposed of U-type expansion joints not only changes the exterior insulation system of thermal performance, but also improves the expansion joint structure performance. Structure and thermal of door hole also meet the requirements.更多还原