Study on deformation prediction and control technology of ancient neighboring buildings caused by shield structure
Large-diameter shield tunnels will cause soil loss and adversely affect the adjacent ancient buildings during the excavation construction process.Due to the fragility and irreversibility of ancient buildings,they are highly sensitive to changes in their surrounding environment.Therefore,it is necessary to conduct research on the deformation characteristics and control measures of nearby ancient buildings during shield tunnel construction.Based on the Zhijiang Road water conveyance pipe gallery project,a numerical model was established to study the deformation and control technology of nearby Liuhe Tower caused by shield construction.The results show that as the distance from the shield tunnel decreases,the settlement at the surface monitoring points increases.A change in thrust has an impact on both the inclination of the tower body and the settlement of the tower foundation and an increase rate of soil loss significantly increases the inclination of the tower body.The arrangement of PVC piles can effectively control the surface settlement and the parametric analysis of pile length,diameter,and spacing shows that reducing the pile spacing is the most effective way to control the surface settlement and deformation of Liuhe Tower.
万方数据
维普
