中国土木水利工程学刊 第十九卷 第一期 (民国九十六年) Journal of the Chinese Institute of Civil and Hydraulic Engineering, Vol. 19, No. 1, pp. 000–000, 2007
527
管推进工程之物理模型试验与数值分析
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关键词:
摘
要
ABAQUS [1]
Leca
[2] 90°
ANALYSIS OF THE PIPE-SOIL INTERACTION FOR PIPEJACKING
Keh-Jian Shou Fun-Wei Chang Department of Civil Engineering National Chung-Hsing University Taichung, Taiwan 40227, R.O.C. Key Words: finite element analysis, pipejacking, physical modeling, face stability.
ABSTRACT
In this study, physical and numerical models were applied to analyze the pipe-soil interaction during pipejacking work. Physical model was applied to simulate cases of pipejacking with excessive driving force and insufficient driving force. After calibrating with the physical modeling results, the finite element software ABAQUS [1] was used to study the behavior, including surface subsidence, failure mechanism, and pipe-soil interaction of pipejacking excavations. The major findings are: (1) the results show that the driving force is critical for the behaviour of pipe-soil interaction. Surface subsidence is mainly due to the lack of driving force, however, the excessive driving force could cause the unfavorable surface heaving problem. (2) Comparing with the analytical models presented by Leca (1990), it shows that different models consistently predict the surface heaving behaviour but not the shape of surface subsidence. Theoretically, the long axis of the ellipse of surface subsidence is parallel to the driving direction, but the physical modeling shows the long axis is perpendicular to the driving direction.
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528
中国土木水利工程学刊
第十九卷
第一期
(民国九十六年)
地表坍形为椭圆
σS
一,前
言
C H
γ , c ' ,φ '
V
σT
49
φ
'
2
第一破坏模式 collapse 1
D
(cut and cover method) (trenchless)
地表坍形为椭圆
σS
(a).
(pipejacking method)

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