摘 要
随着全球能源需求的增加和建筑节能要求的不断提高，墙体保温性能成为寒冷地区建筑节能研究的重要课题。轻质混凝土作为一种新型建筑材料，因其良好的隔热性能和施工便捷性而备受关注。本研究旨在探讨轻质混凝土墙体在寒冷地区的保温性能及其热桥效应的影响。通过理论分析、数值模拟与实验验证相结合的方法，系统评估了不同密度和配比的轻质混凝土墙体的热工性能，并对典型节点处的热桥效应进行了定量分析。研究结果表明，轻质混凝土墙体具有显著的保温优势，其导热系数随密度降低而减小，且在合理设计下可有效减少热桥引起的能量损失。此外，本研究提出了一种优化的墙体构造方案，通过改进节点设计和材料搭配，进一步提升了墙体的整体保温性能。该研究的创新点在于首次将轻质混凝土应用于寒冷地区墙体保温体系，并结合实际工程条件提出了针对性的优化策略，为寒冷地区建筑节能设计提供了重要的理论支持和技术参考。研究成果不仅丰富了轻质混凝土的应用领域，还为实现建筑节能目标提供了新的思路和方法。
关键词：轻质混凝土；墙体保温性能；热桥效应；寒冷地区；优化设计
ABSTRACT
With the increasing global energy demand and the continuously rising requirements for building energy efficiency, the thermal insulation performance of walls has become an important research topic in cold regions. Lightweight concrete, as a novel construction material, has attracted significant attention due to its excellent thermal insulation properties and ease of construction. This study aims to investigate the thermal insulation performance of lightweight concrete walls in cold regions and the influence of thermal bridging effects. By integrating theoretical analysis, numerical simulation, and experimental validation, the thermal performance of lightweight concrete walls with different densities and mix proportions was systematically evaluated, and the thermal bridging effects at typical joints were quantitatively analyzed. The results indicate that lightweight concrete walls possess significant thermal insulation advantages, with their thermal conductivity decreasing as density reduces. Moreover, under reasonable design conditions, the energy loss caused by thermal bridges can be effectively minimized. Additionally, this study proposes an optimized wall construction scheme that enhances the overall thermal insulation performance through improved joint design and material combinations. The innovation of this research lies in the first application of lightweight concrete in the wall insulation systems of cold regions, along with the development of targeted optimization strategies based on actual engineering conditions. This provides crucial theoretical support and technical references for energy-efficient building design in cold regions. The research not only expands the application scope of lightweight concrete but also offers new approaches and methods to achieve building energy conservation ob jectives.
Keywords: Lightweight Concrete; Wall Insulation Performance; Thermal Bridge Effect; Cold Regions; Optimization Design
目 录
摘 要 I
ABSTRACT II
第1章 绪论 1
1.1 轻质混凝土墙体研究背景与意义 1
1.2 国内外研究现状分析 1
1.3 本文研究方法与技术路线 2
第2章 寒冷地区轻质混凝土墙体保温性能分析 3
2.1 保温性能的影响因素研究 3
2.2 不同材料配比的保温效果对比 3
2.3 实验数据与理论模型验证 4
第3章 轻质混凝土墙体热桥效应评估 5
3.1 热桥效应的基本原理 5
3.2 墙体设计对热桥效应的影响 5
3.3 热桥效应的数值模拟与优化建议 6
第4章 寒冷地区轻质混凝土墙体应用策略研究 7
4.1 区域气候条件对墙体性能的要求 7
4.2 施工工艺对保温性能的影响 7
4.3 经济性与可持续性综合评价 8
结论 9
参考文献 10
致 谢 11
