施工過程を考慮した浅層トンネル掘削技術の開発

考虑施工过程的浅埋隧道开挖技术开发

• 批准号: 12555141
• 负责人: NAKAI Teruo
• 金额: $ 8.13万
• 依托单位: Nagoya Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12555141/
• 关键词: Tunneling; Construction Sequence; FEM; Model TEst; Constitutive Equation; Shallow ground; Earth Pressure; Surface Settlements; モデル試験; 数値解析

Exploitation of underground space is vital to develop and/or redevelop the urban area. To make the underground space, tunneling methods such as shield tunnel and NATM have been often employed in urban area, instead of cut and cover methods, because of the restriction of environmental aspects and usage of ground surface and others. Urban tunnels usually are constructed in the shallow depth of the ground and sometimes have large cross-section. In the construction of such tunnels, we should pay much attention to the ground movement including surface settlements and the damage to the existing buildings as well as the earth pressure on the tunnels.This research has been carried out to investigate the ground movements and the earth pressures during shallow tunneling and devise proper and economic tunneling methods in urban area. For this purpose, we carried out elastoplastic unite element analyses in which the mechanical behavior of soils structures and interface between soil and structure a … More re properly taken into consideration, together with the corresponding model tests. Main contents of the present research can be summarized as follows :● Investigate the influence of soil cover on surface settlements and earth pressure due to tunnel excavation considering the ground as green field● Investigate the effects of existing super structures (building loads) in tunnel excavation.● Verify the response of different loading levels of existing super structure on ground deformation due to shallow tunnel excavation.● Investigate the influence of excavation sequences m surface settlements and earth pressure in case of large cross section and two or more parallel tunnels.● Characterize three-dimensional effects of tunnel excavation on surface settlements and earth pressure.● Simulate the advance of tunnel excavation process along the excavation direction in sequential way.The results of the present research will be published as two journal papers in "Soils and Foundations" of the Japanese Geotechnical Society (JGS) in near future. Less

开发地下空间对城市地区的发展和/或再发展至关重要。由于环境因素和地表利用等方面的限制，城市地下空间的开发通常采用盾构法和新奥法等隧道施工方法，而不是明挖法。城市隧道一般埋深较浅，有时断面较大。在城市浅埋暗挖隧道施工中，既要考虑地表沉降、既有建筑物的破坏等地表移动，又要考虑隧道所承受的土压力，本文旨在研究城市浅埋暗挖隧道施工中地表移动和土压力的变化规律，为城市浅埋暗挖隧道施工提供合理经济的施工方法。为此，本文进行了弹塑性单元分析，分析中考虑了土、结构以及土与结构接触面的力学特性， ...更多信息 再加上相应的模型试验，本研究的主要内容可以概括如下：●调查土壤覆盖层对地表沉降和隧道开挖引起的土压力的影响，将地面视为绿色场地●调查现有上部结构的影响●验证现有上部结构不同荷载水平对浅埋隧道开挖引起的地表变形的响应。●研究大断面和两个或多个平行隧道情况下开挖顺序对地表沉降和土压力的影响。●描述三个-隧道开挖对地表沉降和土压力的尺寸效应。●模拟隧道开挖过程沿开挖方向沿着顺序推进。本研究结果将作为两篇期刊论文发表在“土壤和基础”的日本岩土工程学会（JGS）在不久的将来。少

项目成果

T.Nakai et al.: "Influence of existing building load on the deformation and earth pressure of ground due to tunneling"Proc.of the 16th International Conference on Soil Mechanics and Geotechnical Engineering. (投稿中). (2005)

T.Nakai 等：“现有建筑荷载对隧道变形和土压力的影响”第 16 届国际土壤力学和岩土工程会议论文集（2005 年）。

栗本知生: "2次元浅層トンネル掘削実験とその解析"第37回地盤工学研究発表会. 2. 1673-1674 (2002)

栗本智雄：《二维浅埋隧道开挖试验及其分析》第37届岩土工程研究会议2. 1673-1674（2002）。

H.M.Shahin, T.Nakai, M.Hinokio, D.Yamaguchi: "3D effects on pressure and displacements during tunnel excavations"Soils and Foundations. (accepted for publication). (2004)

H.M.Shahin、T.Nakai、M.Hinokio、D.Yamaguchi：“隧道开挖过程中压力和位移的 3D 效应”土壤和地基。

T.Nakai, M.Hinokio, H.M.Shahin, T.Sada: "Earth Pressures and Surface Settlements in Shallow Tunnels with Large Cross-Section"Proc.of 12th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, Singapore, August. 879-882 (2003)

T.Nakai、M.Hinokio、H.M.Shahin、T.Sada：“大横截面浅层隧道中的土压力和地表沉降”第 12 届亚洲土壤力学和岩土工程区域会议会议记录，新加坡，8 月。

T. Nakai et al.: "Earth pressure and ground movements due to tunneling-model tests and analyses"Proc. of IS-Kyoto2001. 1. 153-158 (2001)

T. Nakai 等人：“隧道模型测试和分析引起的土压力和地面运动”Proc。