三峡浪石

迈克瑞彩色混凝土　施工流程

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【深圳地铁运营管理现状及未来展望】　作者：蒋维彬

　　摘要：本文阐述了深圳地铁一期工程运营管理现状及其特点，提出了深圳特区未来城市轨道交通运营管理的发展趋势及其挑战。

　　关键词：地铁 运营管理 展望

　　城市交通作为城市社会经济发展的纽带和命脉，与城市的形成、发展和兴衰紧密相连。深圳特区作为我国改革开放的窗口，国民经济实力不断增强并已跃居全国大中城市前列，特区城市化进程正加速推进。由于经济和人口的快速增长，深圳市的交通需求增长迅猛。针对这一发展趋势，深圳市政府为从根本上解决城市交通拥堵问题，确定了大力发展以城市轨道交通为主的公共交通系统，深圳地铁一期工程正是在此背景下立项、动工并于2004年底建成开通试运营。

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岩土工程学报 2003. 25(4). 488-491



　　3-Dimension FEA for the Interaction between Excavation Support Structure and Soil in a Very Deep Pit

LU Xinzheng1 SONG Erxiang1 JI Lin2 SUI Feng2

1 Department of Civil Engineering, Tsinghua University, Beijing, 100084

2 Headquarters of the Runyang Yangtze Road Bridge, Zhenjiang, 212002



　　Abstract: The size of a very deep pit is about 69×50×50m and it is difficult to analyze with traditional approximate method. In order to know the details of the deformation and internal force of the excavation support structure, spatial non-linear finite element analysis is carried out in which the excavation process is considered. The interaction between the excavation support and the soil, the difference between various excavation plans, the influence of ground water lowering and sensitive analysis of critical parameters are discussed in detail. The numerical results show that the deformation of the continuous concrete wall with interaction effect will be 10 times of that without interaction effect, while the difference of support axial force will be 1.5 times in the two cases. At the same time, the excavation plan and ground water lowering are also important for the deformation and internal force in the support. The analysis results show that the interaction between soil and structure and simulation of excavation process are necessary in such complex problems.

　　Keywords: interaction, deep pit, spatial finite element analysis

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3-Dimension FEA

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