浅埋暗挖过街通道施工的三维数值模拟

›› 2015, Vol. 29 ›› Issue (1): 59-61.

浅埋暗挖过街通道施工的三维数值模拟

陈云翔1，张峰1，刘庆华2，蒋刚1，王旭东1

(1.南京工业大学城市地下空间研究中心，南京 210009；2.南京工业大学基建处，南京 210009)

收稿日期:2014-02-24 出版日期:2015-02-20 发布日期:2015-03-13
作者简介:陈云翔（1988-），男，江苏省南京人，硕士生。主要从事隧道工程方面的研究。

Three Dimension Numerical Analysis of the Construction of a Shallow-Buried Underpass

CHEN Yunxiang1, ZHANG Feng1, LIU Qinghua2, JIANG Gang1, WANG Xundong1

(1. Research Center of Urban Underground Space, Nanjing University of Technology, Nanjing 210009;
2. Infrastructure Construction Division, Nanjing University of Technology, Nanjing 210009)

Received:2014-02-24 Online:2015-02-20 Published:2015-03-13

摘要/Abstract

摘要： 人行过街通道施工不可避免对周边环境造成不利的影响，通过对隧道开挖施工过程的研究分析，对施工安全具有重要的工程指导意义。应用Midas GTS建立浅埋暗挖施工的三维数值模型，模拟浅埋暗挖台阶法开挖施工过程，分析开挖工程中拱顶沉降和地表沉降情况。结果表明：上台阶开挖对地表沉降量影响较大，及时支护可以很好的控制地表沉降；交通荷载作用下的地表沉降和拱顶沉降会影响工程的安全施工，数值模拟对施工过程和安全有指导作用。


关键词: 浅埋暗挖, 管棚, 台阶法, 数值模拟

Abstract: The construction of the pedestrian underpass beneath the street in the urban area will have unavoidable adverse impact on the adjacent environment. The simulation of the construction procedure has an important role in maintaining a safe construction. The three dimensional numerical model of the construction procedure of a shallow buried pedestrian underpass is developed with MIDAS GTS commercial software. The objectives of the analysis include the settlement at the crest of the tunnel as well as the adjacent ground. The results indicate that the excavation of the upper portion of the tunnel has a larger impact of the ground surface settlement. The immediate erection of the supporting in this area will have a good result in the settlement control. The ground surface settlement induced by the traffic load and settlement at the tunnel crest are the indicators for the safe tunnel construction. It is also concluded that the numerical analysis can provide valuable information in guiding the safe construction.

Key words: Excavation of Shallow Buried Tunnel, Tube Shielding, Stepped Excavation, Numerical Simulations

陈云翔1，张峰1，刘庆华2，蒋刚1，王旭东1. 浅埋暗挖过街通道施工的三维数值模拟[J]. , 2015, 29(1): 59-61.

CHEN Yunxiang1, ZHANG Feng1, LIU Qinghua2, JIANG Gang1, WANG Xundong1. Three Dimension Numerical Analysis of the Construction of a Shallow-Buried Underpass[J]. , 2015, 29(1): 59-61.

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