粘土層中深開挖對鄰近潛盾隧道影響分析

Influence of Deep Excavation to Adjacent Shield Tunnel in Clay Soils

余明山(Ming-Shan Yu) ； 賴慶和(Ching-Ho Lai) ； 楊清源(Ching-Yuan Yang)

《地工技術》 53期 (1996/02) Pp. 65-74

https://doi.org/10.30140/SG.199602.0007

摘要

本文主要是以有限差分法分析程式FLAC，配合FLACish語言修改其內建之應力－應變模式，使其能以雙曲線模式模擬土壤之非線性行為，從而建立深開挖之分析模式，藉以探討軟弱粘土層中之深開挖工程對鄰近潛盾隧道應力與變形之影響，並評估保護措施之有效性，提供日後類似工程規劃之參考。

關鍵字

深開挖 ； 潛盾隧道 ； 有限差分法 ； 雙曲線模式

並列摘要

The authors have incorporated hyperbolic model into finite differential computer program FLAC to make it possible to simulate non-linear behavior of soils, and subsequently, to develop a deep excavation analysis model. A chosen case of Taipei tunnel affected by adjacent excation is evaluated by the above-mentioned method to find the possible changes in stress and deformation of the adjacent shield tunnel during deep excavation. Effectiveness of some protect measures are also assessed in the paper for future engineering practices.

並列關鍵字

deep excavation ； shield tunnel ； finite differential method ； hyperbolic stress-strain model