Pipeline Response to Earthquake-induced Ground Deformation
Başlık:
Pipeline Response to Earthquake-induced Ground Deformation
Yazar:
Argyrou, Christina, author.
ISBN:
9780438026254
Yazar Ek Girişi:
Fiziksel Tanımlama:
1 electronic resource (178 pages)
Genel Not:
Source: Dissertation Abstracts International, Volume: 79-10(E), Section: B.
Advisors: Thomas D. O'Rourke Committee members: Mircea D. Grigoriu; Linda K. Nozick; Harry E. Stewart.
Özet:
The primary focus of this thesis is the evaluation through experimental and numerical investigations of pipeline performance under earthquake-induced ground deformation. This kind of deformation is associated with soil liquefaction, landslides, fault rupture, tectonic uplift and subsidence and settlement of loose granular soils.
A large part of this thesis involves the earthquake response of pipelines with defects, e.g., cracks and/or leaking joints, rehabilitated with cured-in-place linings (CIPLs). The thesis begins with the description of a series of full-scale static and dynamic axial tension tests to characterize the tensile capacity of CIPL-reinforced pipelines. The CIPL de-bonding is of great importance for the accommodation of tensile deformation. The amount of CIPL de-bonding is a function of the CIPL properties (i.e. stiffness, tensile strength) with respect to the pipe/CIPL interface bond strength, which increases with increasing internal pressure. A one-dimensional finite element model is developed that accounts for the CIPL de-bonding mechanism as a Mode II fracture propagation phenomenon, including the enhanced pipe/CIPL interface strength in the presence of internal pressure. Seismic wave interaction with CIPL-reinforced pipelines subjects them to alternating tension and compression as the waves propagate through the ground. The combinations of ground velocity amplitude and pulse period that cause lining deformation are evaluated through analytical models of seismic wave/pipeline interaction and finite element simulations.
CIPL-strengthened pipeline response to permanent ground deformation was also investigated through large-scale fault rupture experiments and numerical simulations. Fault rupture test results on pipelines with CIPLs are presented and compared with test results on unlined pipelines, to assess the effectiveness of the CIPLs for seismic retrofit. The results of the numerical model developed in this work that accounts for de-bonding between the lining and pipe as Mode II fracture propagation are in good agreement with full-scale fault rupture test results.
The thesis also includes a comprehensive evaluation of ductile iron (DI) pipeline response to earthquake-induced ground deformation through the results of a large-scale testing program, including a fault rupture test on a 150-mm DI pipeline with restrained axial slip joints. Three different types of DI joints are considered in this study: push-on, restrained, and restrained axial slip joints, which are often referred to as hazard-resilient joints. A series of axial tension, axial compression, four-point bending and ground rupture test results conducted on DI jointed pipes are used to identify the limit states associated with DI joint performance. A two-dimensional finite element model accounting for (i) coupled shear/normal forces to the pipeline and (ii) bell resistance to movement, validated against large-scale fault rupture test results, is used for the quantification of the DI pipeline performance under strike-slip faulting conditions over the entire spectrum of pipeline/fault crossing angles. Pipeline performance is shown to be governed by four limit states, including tensile, compressive, and rotational capacity of the joints and local buckling of the pipe. Each limit state is related to a specific range of pipeline/fault crossing angles, which are identified and shown in parallel with the plots of maximum fault offset vs. pipeline/fault intersection angle.
Notlar:
School code: 0058
Konu Başlığı:
Tüzel Kişi Ek Girişi:
Mevcut:*
Yer Numarası | Demirbaş Numarası | Shelf Location | Lokasyon / Statüsü / İade Tarihi |
---|---|---|---|
XX(680626.1) | 680626-1001 | Proquest E-Tez Koleksiyonu | Arıyor... |
On Order
Liste seç
Bunu varsayılan liste yap.
Öğeler başarıyla eklendi
Öğeler eklenirken hata oldu. Lütfen tekrar deneyiniz.
:
Select An Item
Data usage warning: You will receive one text message for each title you selected.
Standard text messaging rates apply.