It has been a key issue how to effectively reduce the construction influence on the excavation deformation and surrounding environment. This paper studies the protective effect of partition walls on the subway excavation and adjacent historical buildings. The lateral wall deflections, strut forces, and ground settlements were studied based on the field data at Daliang Station. The deformation characteristics of the historical Charity Association and Junwang Hotel were also discussed. Furthermore, the influence of different stiffness, depth, and location of partition walls on the historical building and pile foundation building near the excavation was analyzed. The results show that corner effects significantly affect the excavation deflection and adjacent historical buildings settlements. Partition walls can effectively reduce the wall deflection and ground settlements, and also can lessen the construction effect on adjacent historical buildings and pile foundation buildings. Besides, it is suggested that a position closer to the building, a depth similar to diaphragm wall depth, and medium rigidity for partition walls be adopted from the perspective of protected effect and economy. The results help to provide a basis for the optimal design of partition walls to protect adjacent buildings.

如何有效降低施工对开挖变形及周边环境的影响一直是一个关键问题。本文研究了隔墙对地铁开挖及相邻历史建筑的保护作用。基于大良站的现场数据，研究了侧墙挠度、支柱力和地面沉降。还讨论了历史慈善协会和君王酒店的变形特征。此外，分析了不同刚度、深度和隔墙位置对开挖附近的历史建筑和桩基建筑的影响。结果表明，边角效应显着影响开挖挠度和相邻历史建筑沉降。隔墙可以有效减少墙体挠度和地面沉降，也可以减轻对相邻历史建筑和桩基建筑的施工影响。此外，从保护效果和经济性的角度，建议隔墙采用离建筑物较近的位置，深度与连续墙深度相近，中等刚度的隔墙。研究结果有助于为保护相邻建筑物的隔墙优化设计提供依据。