不同加固措施对新建隧道下穿电杆塔基的变形影响分析OA

In the construction of urban underground engineering,the tunnel will inevitably penetrate the tower foundation and other buildings(structures),which will cause the deformation of tower foundation.In order to ensure the smooth and safe penetration of the tower foundation of the tunnel,it is necessary to take reinforcement measures for the foundation of the tower.Aiming at the shortcomings in the current research on the reinforcement measures for the tower foundation under the tunnel,this paper relies on a project case,combines the reinforcement measures commonly used in engineering practice,and uses the PLAXIS software to establish a three-dimensional numerical calculation model to study the deformation law of the tower base penetrating the tunnel under the conditions of different reinforcement measures.On this basis,it then discusses the effectiveness of different reinforcement measures for the tower base penetrating the tunnel.The research results show that the superiority of the reinforcement effect is ranked as follows:both reinforcement measures>pile top coupling beam reinforcement measures>foundation reinforcement measures>no reinforcement measures.Taking the pile top displacement as the research object,the pile top coupling beam reinforcement measures and the foundation reinforcement measures show a superposition effect when controlling the displacement of the high-voltage utility poles.The effectiveness of both reinforcement measures is sometimes greater than that of only considering the pile top coupling beam reinforcement measures or the foundation reinforcement measures.The effectiveness is the best when controlling the displacement and deformation of the utility pole with both reinforcement measures.The research on the effectiveness of different reinforcement measures in this paper can provide a useful reference for similar engineering practices.