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<p>Deep excavation causes ground movements and induces structural damage to adjacent buildings. Based on a case history from Tianjin, China, this study investigated the three-dimensional distortion characteristics of adjacent buildings during the excavation process. Indicators were monitored to obtain comprehensive measurement data, including the horizontal deflection of the diaphragm wall, lateral and vertical ground movement, and the horizontal displacement, inclination, and differential settlement of adjacent buildings. The results indicate that the described deformation mode results in the significant horizontal extension and angular distortion of the building, ultimately leading to wall cracking. On this basis, a criterion for estimating damage in three-dimensional structural units is proposed. The effectiveness of the three-dimensional building damage criterion was validated through comparisons with multiple representative field observations. Damage evaluation can facilitate the selection of the most effective protective measures and minimize potential damage to adjacent buildings.</p>

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Evaluation of building damage caused by excavation-induced ground movements in three-dimensional deformation field: a case study in Tianjin, China

  • 期刊论文

  • 发表日期：

    2025年4月12日

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  • Boyang Xia,
  • Gang Zheng,
  • Haizuo Zhou,
  • Yi He

摘要

Deep excavation causes ground movements and induces structural damage to adjacent buildings. Based on a case history from Tianjin, China, this study investigated the three-dimensional distortion characteristics of adjacent buildings during the excavation process. Indicators were monitored to obtain comprehensive measurement data, including the horizontal deflection of the diaphragm wall, lateral and vertical ground movement, and the horizontal displacement, inclination, and differential settlement of adjacent buildings. The results indicate that the described deformation mode results in the significant horizontal extension and angular distortion of the building, ultimately leading to wall cracking. On this basis, a criterion for estimating damage in three-dimensional structural units is proposed. The effectiveness of the three-dimensional building damage criterion was validated through comparisons with multiple representative field observations. Damage evaluation can facilitate the selection of the most effective protective measures and minimize potential damage to adjacent buildings.