An Isolation Device Design of Buried Pipeline under Large Ground Displacement

ICPTT 2012 ◽  
2012 ◽  
Author(s):  
Aiping Tang ◽  
Aihua Wen ◽  
Ruhong Zhong ◽  
Haoyu You
Keyword(s):  
Buried Pipeline ◽  
Device Design ◽  
Ground Displacement ◽  
Isolation Device

Isolation Mechanism and Method for Buried Segmental Pipeline under Earhquake-Induced Large Displacement

2011 ◽  
Vol 99-100 ◽  
pp. 410-413
Author(s):  
Ai Ping Tang ◽  
Ai Hua Wen ◽  
Li Hua Gai ◽  
Ru Hong Zhong
Keyword(s):  
Slope Failure ◽  
Soil Types ◽  
Response Analysis ◽  
Buried Pipeline ◽  
Soil Slope ◽  
Seismic Response Analysis ◽  
Ground Displacement ◽  
Isolation System ◽  
Reliable Isolation ◽  
Rock And Soil

This paper deals with an isolation design methods of buried segment pipeline for large ground displacement in earthquake. The buried pipeline is always damaged due to the strong shaking and earthquake-induced large or permant ground displacement and deformation (PGD), including liquefaction, rock and soil slope failure, fault and fissure. Based on the seismic response analysis for buried segment pipeline, the isolation mechanism and an equipment for resisting ground displacement trigged by liquefaction and fault is presented in this paper. Some related parameters to isolation system like stiffness and damp of isolator, soil types and its displacement, depth of pipeline, are discussed for developing a reliable isolation system fitting the buried segment pipeline.

Container Crane Seismic Isolation Device Design Method Based on Structural Dynamics

2013 ◽  
Vol 353-356 ◽  
pp. 1819-1825
Author(s):  
Pei Zheng
Keyword(s):  
Structural Dynamics ◽  
Seismic Isolation ◽  
Design Method ◽  
Seismic Effect ◽  
Seismic Load ◽  
Device Design ◽  
Container Cranes ◽  
Flexible System ◽  
Container Crane ◽  
Isolation Device

Based on container cranes seismic load calculation criteria with structural dynamics and damage modes of container crane under earthquake, the seismic isolation device of this over-span flexible structure and its associated parameters selection were investigated. Taking the first crane equipped with isolating device as an example, through dynamic analysis and simulating to crane flexible system with isolation device under the earthquake, efforts was made to research for suitable isolation device and design method for port crane. The calculation and analysis in the present study could provide a new way for the container cranes isolation device design and assessment of the structural anti-seismic effect

Studies on Liquefaction Failure Forms and its Damage to Engineering

2014 ◽  
Vol 1065-1069 ◽  
pp. 1540-1546
Author(s):  
Xiao Ling Chen ◽  
Xiao Yan Wang ◽  
Dong Li
Keyword(s):  
Pile Foundations ◽  
Buried Pipeline ◽  
Ground Displacement ◽  
Strength Failure ◽  
Flow Slide ◽  
Sand Boil ◽  
Liquefaction Failure

The liquefaction failure forms are reviewed, including foundation strength failure, sand boil, seismic settlement, large ground displacement and flow slide. Taking pile foundations and buried pipeline as examples, there suggested some measures to reduce hazards of liquefaction.

scholarly journals Large deformation of buried pipeline due to ground displacement caused by lateral flow.

2002 ◽  
pp. 103-112 ◽  
Author(s):  
Kiyoshi SATO ◽  
Masaaki MATSUMOTO ◽  
Shiro TAKADA ◽  
Yasuo OGAWA
Keyword(s):  
Large Deformation ◽  
Lateral Flow ◽  
Buried Pipeline ◽  
Ground Displacement

Development of the mathematical model for assessing the optimal measurement step when surveying the depth of the underground pipeline from the ground

2020 ◽  
Vol 10 (4) ◽  
pp. 364-371
Author(s):  
Ruslan V. Aginey ◽  
◽  
Rustem R. Islamov ◽  
Alexey A. Firstov ◽  
Elmira A. Mamedova ◽  
...  
Keyword(s):  
Mathematical Models ◽  
Survey Data ◽  
Ground Surface ◽  
Maximum Error ◽  
Large Error ◽  
Bending Stress ◽  
Buried Pipeline ◽  
Optimal Measurement ◽  
Pipeline Section ◽  
Bending Stresses

Existing methods for estimating the bending stresses of buried pipeline section based on the survey data for the depth of the axis of the pipeline from the ground surface are characterized by a large error between the real values of the bending stress and the values of the bending stress obtained from the calculation results based on the survey data. The purpose of this study is to improve the methodology for calculating the bending stresses of buried pipeline section based on the results of determining the depth of the axis of the pipeline from the ground surface, taking into account the design features of the pipeline and the used search equipment. Mathematical models are proposed that allow for the set value of the maximum error in determining bending stresses for a particular pipeline to choose the optimal measurement step before the survey, which will allow to reduce the error. Explanations are given on the choice of the maximum step of the study based on the strength characteristics of the pipeline. A calculation is provided that confirms the adequacy of the developed mathematical models and the possibility of their application in practice.

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