2011 6 6 153 JOURNAL OF RAILWAY ENGINEERING SOCIETY Jun 2011 NO. 6 Ser. 153 1006-2106 2011 06-0014 - 07 300142 ABAQUS 4. 287 mm 6. 651 mm U455. 43 A Analysis of Impact of Shield Tunneling on Displacement of Existed Bridge Foundation WANG Fei ZHUO Yi The Third Railway Survey and Design Institute Group Corporation Tianjin 300142 China Abstract Research purposes The shield tunneling has the complicated impact on surrounding soil and existed structures and analysis of the impact of the shield tunneling on the surrounding bridge foundation has significant engineering value and research meaning. Taking a tunnel excavation project as the background a 3D finite element model is established by using ABAQUS to simulate the whole shield tunnelling process on considering the nonlinear characteristics of the soil - structure and the displacement laws of the bridge abutment and pile foundation in the course of the shield tunneling are obtained. Research conclusions The results show that the soil in the place ahead rise to the maximum volume of 4. 287 mm under the effect of excavation pressure of the working face and the soils above and at back of the shield settle with the maximum settlement volume of 6. 651 mm under joint effects of the soil loss stress release and gap of shield end caused by the tunneling. Furthermore the vertical transverse and longitudinal displacements of bridge abutment while tunneling can not be ignored. The impact of the base displacement of the abutment should be considered while analyzing the bridge superstructure. Key words shield tunnelling bridge 3D finite element dynamic simulation interaction foundation displacement 2011-04 - 12 1981 1983
6 15 3-6 1 1 1. 1 #4 ~ #5 12 m 11. 6 m 10. 6 0. 5 m 1. 5 m #5 4. 46 m 2 1 2 1 mm m 2 1 1 5 Z4 Z5
16 2011 6 2 1 /m / kg m - 3 / /MPa /MPa 1 4. 5 1 860 25. 0 28. 52 0. 43 0. 3 9. 60 2 35. 0 1 940 25. 3 29. 04 0. 43 0. 3 6. 77 3 11. 5 2 040 30 33. 44 0. 43 0. 3 21. 42 4 15. 5 2 040 25. 3 35. 04 0. 43 0. 3 10. 42 5 33. 5 2 010 30 35. 04 0. 43 0. 3 12. 36 1. 2 140 m 96 m 80 m ABAQUS 9 Drucker - Prager 10-11 x y z C3D8R #5 #5 #5 #5a 5 2 C30 7 C50 1. 3 3 Peck 8 x 140 m y 63 #5 #5a y ABAQUS Embedded 57. 6 m 6 m ABAQUS y Normal 96 m 63 m Behavior Hard Contact z 80 m K 0
6 17 Penalty Small Sliding 3 2 2. 1 1 25% 2 0. 4 MPa 4 12 m 3 11. 6 m 0. 5 m 1. 5 m 112 000 kn 0. 4 MPa 0. 4 MPa 4 4 m ABAQUS 10-3 ~ 10-4 2. 3 5 ABAQUS keywords remove add 3 3. 1 2. 2
18 2011 6 5 3 #5 1 14 1 2 48 m 6 3 4 2 3 4 1 2 3 6 6 7 #5 48 m 6. 651 mm 7 #5 9 m 14. 74 mm 4. 287 mm 8. 958 mm 7. 270 mm 12. 820 mm 6 3. 2 #5 24 m #5 3 7 ~ 9 #5 0. 209 mm 8 #5 10. 970 mm
6 19 8 #5 10 #5 9 #5 11 #5 9 16 54 m #5 3. 374 mm 4. 436 mm 4. 354 mm 3. 355 mm 3. 3 #5 10 ~ 12 #5 3 #5 #5 12 #5 #5 10 1 ~ 4 1 ~ 4 10. 954 mm 10. 620 mm 9. 998 mm 10. 323 mm 11 #5 1 ABAQUS 11. 221 mm 12 16 54 m #5 1 ~ 4 #5 #5 2 3 4. 164 mm 1 4 3. 665 mm 4 2 4. 287 mm #5 #5 #5a
20 2011 6 6. 651 mm 274-280. 3 6. J. 2003 9 1514-1520. Jiang Hongsheng Hou Xueyuan. Theoretical Study And Analysis of Site Observation on The Influence of Shield Excavation on Soft Clays Around Tunnel J. 1. Chinese Journal of Rock Mechanics and Engineering D. 2008. 2003 9 1514-1520. Li Lin. The 3D FEM Simulation and Experimental 7. Research on Ground Deformation and Piles by Shield D. 2010. Driven D. Tianjin Tianjin University 2008. 2. Multistory Buildings Interaction System D. Tianjin J. 2008 11 45-48. Tianjin University 2010. Wang Yuhua Li Haimin Wang Lijun. Analyses of the Displacement Caused by Shield Construction J. Journal of Railway Engineering Society 2008 11 45-48. 3. 290. J. 1999 6 9. ABAQUS M. 699-703. 2010. Zhang Qinghe Zhu Zhonglong Yang Junlong etc. Fei Kang Zhang Jianwei. Applications of ABAQUS in Theory Analysis And Testing Study of Soil Disturbance Caused By Shield - Driven 1999 6 699-703. YI Hongwei Sun Jun. Mechanism Analysis of Disturbance Caused by Shield Tunnelling on Soft Clays J. Journal of Tongji University 2000 3 278-281. 5. Bi Jihong Wang Hui. Engineering Elastic - plastic J. 1997 3 274-280. Mechanics M. Tianjin Tianjin University Press Li Yongsheng Huang Haiying. Computation of 2003. Mechanical Effects on Adjacent Piles by Shield Excavation J. Journal of Tongji University 1997 3 Wang Fei. Dynamic Substructure Method for Soil - 8 R. B. Peck. Deep Excavations and Tunneling in Soft Ground State of the Art Report. Proceeding of 7th International Conference on Soil Mechanics. and Foundation Engineering C Mexico City 1969 225 - Soil Engineering M. Beijing Water Publication of China 2010. 4. J. 10. M. 1999. 2000 3 278-281. Gong Xiaonan. Soil Plasticity M. HangZhou Zhejiang University Press 1999. 11. M. 2003.