In order to create more underground space, it was important to investigate the impact of excavation on the preexisting building. In\nthis paper, a scale model test was conducted to analyze the stability of the structure during excavation. The model consisted of\nunderpinning piles preinstalled in clay, with a reinforced concrete building placed on underpinning piles. The strain and\nsettlement of the structure were observed to reveal the time settlement of columns and the time strain of beams, columns, and piles\nduring excavation. The results showed that the strain change of beams was small, and strain values of columns were getting higher.\nAnd underpinning piles had great strain variations. They were of great significance to underpinning design and\nengineering practice.
Loading....