A common occurrence in building renovation is the modification in the usage category that can lead to higher imposed loads, and consequently the need for structural improvements to the existing structure or to a structural element, such as timber floors. Strengthening practices oftentimes affect the originality of the building or a structural element under consideration. However, the preservation of the originality of timber floors having historical, architectural and cultural interest can be of high importance. This article provides insight into the field of timber floor strengthening techniques with regards to the requirements for conservation of the wooden built heritage. Moreover, a new strengthening technique using structural glass as a strengthening element for timber floors is presented, as reinforcing the bottom side of timber floors without compromising the appearance of the floor is an important objective of a successful intervention. In order to evaluate the performance of the newly proposed strengthening technique from a structural and environmental point of view, structural analysis and a life cycle assessment on a timber floor strengthened with cross-laminated timber panels and structural glass strips are performed. The structural analysis shows the possibility to use structural glass and still achieve a significant increase in the load-carrying capacity of the timber floor. Furthermore, the proposed strengthening technique has a lower global warming potential (GWP) and non-renewable cumulative energy demand compared to renovation and replacement with a cross-laminated timber panel, and a lower GWP compared to replacement with a reinforced concrete slab. This study not only represents the first holistic approach to evaluate the structural and environmental performance of the proposed strengthening technique, but it also addresses the aesthetically-aware design and technical limitations in the utilization of glass for the renovation of timber floors and thoroughly presents the possibilities to overcome these limitations.

建筑物翻新中的常见现象是使用类别的修改，这可能导致更高的施加负荷，因此需要对现有结构或结构元素（例如木地板）进行结构改进。加强实践通常会影响建筑物或所考虑的结构元素的新颖性。然而，具有历史，建筑和文化意义的木地板的原创性的保存可能是非常重要的。本文就保护木质建筑遗产的要求，深入介绍了木地板加固技术领域。此外，提出了一种使用结构玻璃作为木地板强化元素的新强化技术，因为在不影响地板外观的情况下加固木地板的底面是成功干预的重要目标。为了从结构和环境的角度评估新提出的加固技术的性能，对交叉层压木板和结构玻璃条加固的木地板进行了结构分析和寿命周期评估。结构分析表明可以使用结构玻璃，并且仍然可以显着提高木地板的承载能力。此外，与采用交叉层压木板进行翻新和替换相比，拟议的加固技术具有较低的全球变暖潜势（GWP）和不可再生的累积能源需求，与用钢筋混凝土板替代相比，GWP较低。这项研究不仅代表了评估所建议的加固技术的结构和环境性能的第一种整体方法，而且还解决了在玻璃用于木材地板翻新中的审美意识设计和技术局限性，并彻底展示了​​可能性克服这些限制。