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Study on Wall Rock Creep of Tunnel-type-anchor of Siduhe Suspension Bridge

Author: LuoLiZuo
Tutor: WeiJun
School: Huazhong University of Science and Technology
Course: Bridge and Tunnel Engineering
Keywords: Tunnel anchor Country rock Creep Constitutive model ABAQUS
CLC: U443.24
Type: Master's thesis
Year: 2005
Downloads: 216
Quote: 0
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Abstract


The creep rock engineering impact can not be ignored , and in-depth study in the theory and practice of the creep characteristics are of great significance . But due to the complexity of the problem itself and test the implementation difficulties factors , the problem is far from talking about less than perfect . In this paper, the Western Transportation Construction research projects of the Ministry of Communications Siduhe Span by the suspension bridge tunnel anchor Numerical Analysis \the test results , select Time hardening form and both Kelvin-Voigt creep constitutive model for the numerical calculation , and is determined by fitting the model parameters ; 2 ) application of the finite element analysis software ABAQUS the two creep model - based and two levels of sub rock facade and control points the anchor surrounding rock tunnel Siduhe viscoelastic analysis : (1) the level in the rock facade : the maximum principal strain at different times of the rock mass , along the bridge displacement and the distribution of the maximum principal stress ; (2) at the level of the control points : first, the five control points as the object of study, obtained at different times of the maximum principal stress and the maximum principal strain and the distribution of the vertical displacement , then again single data point strain - time and displacement - time curve ; 3 ) on the basis of the above work , based on the results of the analysis of the two models are compared , followed by an analysis of model results . In this paper, the research on rock creep suspension bridges tunnel anchorage system for Siduhe security analysis provides a reliable basis .

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CLC: > Transportation > Road transport > Bridges and Culverts > Bridges constructed > Pier structure ( substructure ) > Anchor
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