Observed response of maglev structure undercrossed by three shield tunnels in soft soil
作者机构：Key Laboratory of Geotechnical and Underground EngineeringMinistry of EducationTongji UniversityShanghai 200092China Department of Geotechnical EngineeringCollege of Civil EngineeringTongji UniversityShanghai 200092China Centre for Offshore Foundation SystemsUniversity of Western Australia35 Stirling HighwayCrawleyPerthWA 6009Australia Shanghai Municipal Engineering Design Institute(Group)Co.Ltd.China
出 版 物：《Underground Space》 (地下空间（英文）)
年 卷 期：2022年第7卷第4期
页 面：636-661页
核心收录：
学科分类：081406[工学-桥梁与隧道工程] 08[工学] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程]
基 金：financially supported by National Natural Science Foundation of China,China(Grants Nos.51978517,41772295,52090082,and 52108381) Innovation Program of Shanghai Municipal Education Commission(Grant No.2019-01-07-00-07-456 E00051) Shanghai Science and Technology Committee,China Program(Grants Nos.21DZ1200601,20DZ1201404) National Key Research and Development Program of China(Grant No.2021YFF0502200) China Postdoctoral Science Foundation,China(Grant No.2021M702491)
主 题：Maglev Multi-crossing Shield tunnelling Ground settlement Pier displacement
摘 要：This paper investigates the response of a maglev structure to three under-crossing tunnels of the Shanghai Metro Line *** minimal distance between the tunnels and pile groups of the maglev structure is only 1.5 m,thus the deformations of the maglev structure are strictly controlled for the serviceability of the operating maglev *** displacements of maglev piers and ground settlements during different tunnelling stages are monitored with an automatic measuring *** on the observed data,the ground settlement trough and displacements of maglev piers caused by the three shield tunnelling procedures are analyzed and *** maximal ground settlement after the completion of the three tunnelling procedures is -43 *** operate the existing maglev safely,practical construction control methods are applied,including synchronous grouting,adjustment of the shield status,shield-advancing speed control,and stabilisation of the soil chamber *** these countermeasures,the tunnel-induced deformations of maglev piers are well below the predefined *** piers heave under the strict deformation criterion of 2.0 *** crossing project is finally completed without interruptions of the maglev operations by monitoring the *** presented project is a valuable example for the evaluation of shield tunnelling effects on the adjacent maglev structures and establishes criteria for similar projects in the future.
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