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| NUMERICAL ANALYSIS OF EARTH PRESSURE BALANCE SHIELD TUNNELING AT GUOMAO—SHUANGJING INTERZONE OF BEIJING SUBWAY LINE NO.10 |
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Abstract Shield tunneling process is simulated with FLAD3D combined with engineering situation of Guomao— Shuangjing interzone of Beijing subway line No.10. Stress and displacement monitoring points are distributed around the model shield tunnel. Regularities of displacement and stress in surrounding soil are studied. The main results are as follows：(1) not only vertical but also horizontal displacements show that soil is extruded ahead of excavation；(2) vertical displacement is more prominent that horizontal displacement；(3) vertical and horizontal stresses decrease speedily near the tunneling excavation face with half stress being released；and (4) a mass of disturbance mainly occurs in 20 m between excavation face and its behind. It is found that the simulated results are in good agreement with in-situ values.
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Received: 28 August 2007
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MAO Yuting1, 2, HE Manchao1, 2, LIU Fangzhou3, BAI Xing4, YANG Xiaojie1, 2, TAO Zhigang1, 2*. Development and application of a large-scale physical model system for tunnel creep testing[J]. , 2026, 45(6): 1627-1638. |
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