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| UNDERGROUND PIPELINE DEFORMATION PREDICTION AROUND URBAN RAIL TRANSIT TUNNEL ENGINEERING |
| WU Fengbo1，2，3，JIN Huai1，SHANG Yanjun4 |
(1. Beijing Urban Construction Exploration and Surveying Design Research Institute Co.，Ltd.，Beijing 100101，China；2. Beijing Urban Construction Group Co.，Ltd.，Beijing 100088，China；3. School of Civil and Environmental Engineering，University
of Science and Technology Beijing，Beijing 100083，China；4. Institute of Geology and Geophysics，
Chinese Academy of Sciences，Beijing 100029，China) |
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Abstract Through summarizing the monitoring results，it is pointed that when the pipeline rigidity is large，and the settlement between pipeline and formation is large. The general deformation law of underground pipeline is basically the same to the move of stratum. When the pipeline is vertical above the tunnel，the settlement curve fits to the normal distribution. The Peck formula for ground surface settlement prediction in tunnel engineering is corrected，and the pipeline settlement prediction formula is established. Combining the former research results of stratum loss rate ，the reference value of pipeline settlement trough width parameter is calculated. The result of numerical simulation shows that the deformation of pipeline parallel above the tunnel is more than vertical above the tunnel，and the pipeline settlement prediction formula may preliminarily evaluate the deformation of pipeline parallel above the tunnel. The rigid pipeline longitudinal strain calculation formula may also be modified to get the pipeline deformation. The engineering application proves that the pipeline settlement prediction formula，numerical simulation and monitoring results are in good agreement，and the pipeline settlement prediction formula is good in application.
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Received: 24 May 2012
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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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2013, Vol. 32 
