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A Nonlinear Numerical Simulation of the Behavior of PCCP in Soft Ground During Construction Process and Under Working Conditions

Author: YinShuHui
Tutor: WangChengHua
School: Tianjin University
Course: Structural Engineering
Keywords: PCCP pipe Finite Element Analysis Construction Simulation Plaxis Uneven settlement
CLC: TU375
Type: Master's thesis
Year: 2010
Downloads: 62
Quote: 0
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Abstract


PCCP pipe ( PCCP pipe ) as in recent years to develop a new type of pipe material in a variety of large-scale water projects has been widely used, but the force and deformation behavior of their knowledge is not clear , the theoretical research behind the engineering practice , especially in soft ground with the construction sequence for its force and deformation behavior is more complex , it is essential to analyze the whole process of PCCP pipe . This article presents a soft ground PCCP pipe construction process and work traits nonlinear construction simulation . This paper first describes the relevant PCCP pipe and gravel direct shear test research status , followed by Plaxis software based on the finite element analysis were introduced. Through trial and finite element analysis , this paper carried out the following aspects: 1, on the project concerned sand, gravel intensity indicators were direct shear tests , looking into the process of non-cohesive soil shear strength and deformation . 2 , the establishment of two-dimensional finite element model of the whole construction process for PCCP pipe analysis explores the soil properties , pipe stiffness, grading slope, interface roughness , gravel cushion thickness variation of parameters such as the impact of the construction process . 3, after the normal operation phase PCCP overhaul carried out a double-barreled two-dimensional finite element construction simulation . 4 , a three-dimensional finite element model for pipeline caused by uneven settlement are two important factors for the parametric analysis , the main consideration of soil properties , pipe stiffness, interface stiffness, gravel cushion thickness variation of parameters such as differential settlement of the pipeline affected. Finally draw some valuable conclusions on the engineering practice to have some significance.

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CLC: > Industrial Technology > Building Science > Building structure > Concrete structure,reinforced concrete structure > Reinforced concrete structures
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