作者机构：
[阳军生; 张可能; 麻彦娜; 黎永索] School of Civil Engineering, Central South University, Changsha 410083, China;[黄常波] China Construction Communication Engineering Group Corporation Limited, Beijing 100061, China;[黎永索] School of Civil Engineering, Hunan City University, Yiyang 413000, China
通讯机构：
School of Civil Engineering, Central South University, China
作者机构：
[杨仙] School of Civil Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, China;[黄常波] China Construction Municipal Construction Corporation Limited, Beijing 100161, China;[黎永索] School of Civil Engineering, Hunan City University, Yiyang, Hunan 413000, China;[杨仙; 张可能; 彭环云] School of Geosciences and Info-Physics, Central South University, Changsha 410083, China
通讯机构：
School of Civil Engineering, Hunan University of Science and Technology, China
作者机构：
[黎永索] School of Civil Engineering, Hunan City University, Yiyang 413000, China;[张可能; 黎永索] School of Geosciences and Info-physics, Central South University, Changsha 410083, China
通讯机构：
School of Civil Engineering, Hunan City University, China
摘要：
The computer-aided design method is used in modeling for the interaction between pile and geotechnical material soil. The behavior of the shear coupling springs is identical to the shear behavior of a grouted cable. Then a numerical model is founded by FLAC3D, deformation and stress responses are obtained as well as the mechanical response of pile during calculation, whose result reveals the mechanism of pile with soil under the load of gravitation and load transferring mode along pile shaft for different ground surface surcharge load, during simulation, the soil consists of two types, the less consolidated soil and normal consolidated soil, both the negative skin friction stress and positive skin friction stress are studied.
作者机构：
[黎永索] School of Civil Engineering, Hunan City University, Yiyang 413000, China;[黄常波] China Construction Municipal Construction Corporation Limited, Beijing 100163, China;[张可能; 黎永索] School of Geoscience and Info-Physics, Central South University, Changsha 410083, China
通讯机构：
School of Civil Engineering, Hunan City University, China
作者机构：
[黎永索] School of Civil Engineering, Hunan City University, Yiyang 413000, China;[黄常波] China Construction Municipal Construction Co. Ltd., Beijing 100163, China;[张可能; 黎永索] School of Geoscience and Info-Physics, Central South University, Changsha 410083, China
通讯机构：
School of Civil Engineering, Hunan City University, China
摘要：
Shield tunneling is often adopted in underground engineering such as civil tunnel construction and mine excavation. The program FLAC3D is used to simulate the process of the tunnel excavation through underground structure in Shenyang in this paper. The analysis results show that, (1) the soil below the end wall suffers great displacement, when the shield approaches the end wall of underground framework from different directions, so the soil under the end wall needs to be reinforced. (2) Increasing pressure and volume of grouting can't significantly reduce the amount of surface subsidence when the drilling of the shield acrosses through the independent foundation. (3) The influences of shielding to the construction are limited because of the constraint function to the surrounding rock above the tunnel by the great entire rigidity of under-ground framework. The results of numerical simulation exactly matches the monitoring data when the stiffness of under-ground frame structure is considered, and it can provide guidance for engineering practice.
作者机构：
[张可能; 黎永索] School of Geoscience and Info-Physics, Central South University, Changsha 410083, China;[李钟; 黄常波; 邓美龙] China Construction Municipal Construction Corporation Limited, Beijing 100163, China;[黎永索] School of Civil Engineering, Hunan City University, Yiyang, Hunan 413000, China
通讯机构：
School of Geoscience and Info-Physics, Central South University, China
摘要：
Tunnel excavation is often done in underground engineering such as civil tunnel construction and mine excavation. The numerical simulation can output colorful results to interpret the tunnel excavation effect more easier. Among all the numerical simulation methods, fast lagrangian explicit finite difference code of continua (FLAC3D) is widely used to solve practical problems, especially in field of elasto-plastic characteristic and construction procedure. So in the present paper, 3 steps of excavations in a tunnel is modeled by FLAC3D to present the stress and displacement distribution, and give guidance for the real practice.
