Influence of Neighboring Buildings on Deep Excavations

• Main Authors: Chih Hunag, 黃智
• Other Authors: Shong-Loong Chen
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/gfze8a

碩士 === 國立臺北科技大學 === 土木工程系土木與防災碩士班 === 106 === This study is based on the deep excavation of the building foundation, the influence of the adjacent rooms around the base on the retaining wall and the deformation of the stratum. The type of structural loading is adopted, considering the influence of the adjacent basement, using the finite element method software PLAXIS 3D 2017.0, analysis The influence of the adjacent house structure on the deep excavation project, simulating the smoothing method, simulating the continuous wall retaining measures with the plate elements, and the supporting members assembled by the H-shaped steel, using the anchor to exert the pre-force simulation to form the temporary deep excavation of the building. The retaining support safety measures, the adjacent room structure is simulated by the plate elements. The results show that the lateral displacement of the retaining wall changes with the depth of the adjacent basement. The depth of the basement is about 0 times the depth of excavation. The displacement is relatively large, and the depth is about 1 times the depth of excavation. The displacement amount approaches a certain value. When the adjacent room is about 2 times excavation depth from the retaining wall, the wall deformation curve converges, that is, the distance of the adjacent room exceeds 2 times of the excavation depth. For the analysis of the deformation of the retaining wall, the excavation can be omitted. The influence of the adjacent room outside the depth on the retaining wall. When the distance between the adjacent room and the retaining wall is about 1 times the depth of the excavation, the depth of the maximum lateral displacement is closer to the surface of the retaining wall as the distance is closer to the ground surface. The wall has more than 1x excavation depth, and the position of the maximum lateral displacement is located at the excavation surface. The surface subsidence increases with the depth of the adjacent basement to one-half of the excavation depth, and its subsidence is relatively large. As the depth increases by about 1.6 times, the subsidence is closer to a certain value. When the adjacent house is closer to the retaining wall, the surface subsidence is relatively larger. When the adjacent house is far away from the retaining wall, the surface subsidence is relatively small.