Tests and Nonlinear Pushover Analysis of Water Pipeline
Date Issued
2012
Date
2012
Author(s)
Kuo, Chun-Wei
Abstract
In this study, the major research direction divides into two parts. One is the tests of ductile iron water pipes with type K joints including axial tension, axial compression and four points bending tests. Another is the nonlinear pushover analysis of continuous ductile iron water pipeline under strike-slip fault.
Ductile iron pipe, which is one of the commonly used water pipeline at Taiwan, has many advantages, such as high strength, ductility and economic and so on. The type K joint utilize rubber and pressing ring to reach high tightness of water and enough bending angle. In this study, three tests of water pipes with joints are carried out to get the relationship curves of tension-displacement, compression-displacement and moment-rotation.
Before carrying out nonlinear pushover analysis of pipelines, nonlinear plastic hinges must be set. In the early literature, material parameter and the analysis of ABAQUS are used to set the axial and moment plastic hinges. In this study, we set the modified axial compression plastic hinges by combing the result of the tests with analysis of nonlinear compression models.
Combing the results of the two parts, we investigate the verifications of pushover analysis under the strike-slip fault by considering allowable fault displacement and failure model of pipes. Under the failure mode controlled by compression and bending of the pipes, the allowable fault displacement tends to decrease. On the other hand, under the failure mode controlled by tension and bending of the pipes, the results of pushover analysis are similar to the early literature.
Subjects
water pipelines tests
pushover analysis
plastic hinges
DIP
type K joint
local buckling
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
index.html
Size
23.27 KB
Format
HTML
Checksum
(MD5):82ef546e66ddb34b89ef4a43411fbea8