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Structure and Parameters Analysis of Bridge Abutment in Soft Clay

Author: YiZuoZuo
Tutor: ShaoXuDong
School: Hunan University
Course: Bridge and Tunnel Engineering
Keywords: Abutment Soft Ground Rheological force Passive pile Plane frame finite element
CLC: U445.71
Type: Master's thesis
Year: 2004
Downloads: 204
Quote: 7
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Abstract


Pile breaking , cracking set body , station road after long-term continuous sinking in soft soil area bridges often disease has seriously affected the normal operation of the traffic . The reason is due to the soft soil bearing capacity is very low, and has a very distinct rheological properties , the role of the roadbed filling in Taiwan and operational phases of the exercise of the vehicle unbalanced vertical load , soft soil the original balance state damage caused by large viscoplastic deformation , which resulted in a greater extrusion load on the pile driven through the pile the abutment deformation , the resulting series of structural disease . When the additional vertical load is large, the visco - plastic deformation of the soft soil and pile rheological force will over time increase. In this paper, a more in-depth analysis and research on methods of analysis of soft soil abutment . First of all , on the basis of previous studies and field tests , a comprehensive analysis of soft ground abutment force characteristics , and the proposed soft ground abutments stress analysis the key is how to take into account the presence of soft soil abutment structure , to establish the finite element model has laid a theoretical foundation ; analyzed rheological properties of model-based theory on the basis of analysis of the mobile soil the pile lateral additional load theory formula in the soft ground abutment calculated the applicable conditions , the establishment of a simplified finite element model of bar system , and the use of contrast with the centrifuge test to prove the correctness of the calculation model . And then through the analysis of engineering instance that the causes of the defects of soft soil abutment . Finally, in front of a simplified calculation model for the design force of the factors affecting Soft Ground Abutment were analyzed to thereby obtain some useful conclusions .

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CLC: > Transportation > Road transport > Bridges and Culverts > Bridge Construction > Bridge maintenance, repair and remediation > Bridge defects and remediation
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