Download or read book Earthquake Response and Rehabilitation of Critical Underground Lifelines Reinforced with Cured in Place Pipe Liner Technologies Under Transient Ground Deformations written by Zilan Zhong and published by . This book was released on 2015 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seismic vulnerability and extensive damage to underground lifeline network, causing significant life and economic losses, have been observed and documented in past earthquakes. Seismic retrofit of critical underground pipelines has become an urgent need of our society to improve the performance and serviceability of these critical lifeline systems as well as to enhance public safety. The cured in place pipe (CIPP) liner technology consists of installing flexible polymeric liners with thermosetting resin inside existing pipelines. Compared with traditional expensive and disruptive excavation and replacement of aging and structurally unsound pipelines, CIPP liner technology provides an economic and environmentally friendly alternative for pipeline rehabilitation. However, the lack of verification and quantification of the seismic performance of CIPP liner-reinforced pipelines under transient ground deformations (TGD) remains a critical deficiency in current practice. Full-scale quasi-static and dynamic tests were performed on nine water-pressurized ductile iron (DI) pipelines (6.0 in. nominal diameter and 30 ft. nominal length) utilizing the two re-locatable shake tables at the NEES Site of University at Buffalo (UB). The DI pipeline specimens were divided into two groups and retrofitted with two types of CIPP liners, the InsituMain℗ʼ liner and the Starline℗ʼ 2000 liner, respectively, which are commonly used in underground pipeline construction and rehabilitation in the U.S. The primary objective of the experimental program is to investigate the behavior of the DI pipelines with weak joints or circumferential cracks under quasi-static loading and their seismic performance under TGD. Numerical joint models were developed to simulate the nonlinear hysteretic axial response of the push-on joints strengthened by two different types of CIPP liners under cyclic loadings. The joint models were subsequently incorporated into the simplified pipeline models to simulate the CIPP liner-reinforced joints or cracks in a buried straight continuous or segmental pipeline. Parametric studies were performed to investigate the influence of different components in the pipeline models to the response of the liner-reinforced joint under seismic loadings. Moreover, incremental dynamic analyses (IDA) were performed on straight buried pipelines using an ensemble of 28 pairs of near-fault ground motion records to evaluate and quantify the seismic performance of the CIPP-liner reinforced pipelines under TGD. Both the experimental results and numerical analyses indicate that CIPP liners provide substantial longitudinal stiffness and strength to the joints of DI pipelines and improve significantly their seismic behavior under high intensity of TGD.
Download or read book Earthquake induced Ground Deformation Effects on Buried Pipelines written by Dimitra Bouziou and published by . This book was released on 2015 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary subject of this thesis is the evaluation of pipeline performance during earthquakes through analytical and experimental studies, spatial analysis, and probabilistic methodologies. Permanent ground deformations caused by liquefaction are also addressed through spatial and statistical analysis, and are compared to foundation deformations caused by liquefaction effects estimated through building damage surveys. This thesis starts with a comprehensive analytical and experimental assessment of segmented pipeline response to transient ground deformation before and after rehabilitation with in situ lining technologies. The different modes of segmented pipeline deformation caused by seismic wave propagation are investigated through finite element analyses to show that the most prominent form of deformation at weak pipeline joints and circumferential pipe cracks are in the axial direction. They exceed the levels of all other forms of pipeline deformation by several orders of magnitude. Nonaxial deformations have negligible effects on pipeline performance under seismic body wave propagation. Pipeline performance after rehabilitation with in situ linings is studied through large-scale testing and the effectiveness of in situ lining technology for seismic retrofit of critical lifelines is evaluated. Pipeline performance during earthquakes is also investigated through spatial analysis of the Christchurch water distribution system response to transient and permanent ground deformations during the 22 February 2011 Christchurch earthquake, New Zealand (NZ). Repair regressions for different pipe types are developed using spatial data sets that are unique in size and complexity, including dense array ground motion records, detailed mapping of areas affected by soil liquefaction, as well as spatial data sets for the water distribution system, geocoded repair records, and high resolution Light Detection and Ranging (LiDAR) measurements of vertical and horizontal movements. This study expands on previous work in several important ways, and provides a detailed framework of the analytical processes for repair regressions that assists in future investigations with data of similar size and complexity. A probabilistic model is presented in which the expected value of the ground strain in the axial pipeline direction within a strain field is calculated by assuming that pipeline orientation with respect to the strain field is uniformly distributed and by accounting for possible differences in tensile and compressive strains with a weighting factor. The proposed methodology is applied in regression analysis of pipeline damage caused by lateral ground strains during the 22 February 2011 Christchurch earthquake, NZ, and can be used for future investigations to improve the assessment of ground strains affecting segmented pipelines. Permanent ground deformation during the 2010-2011 Canterbury Earthquake Sequence, NZ, is evaluated through statistical analysis of vertical and lateral ground displacements, as well as differential vertical displacements and lateral ground strains, calculated from high resolution LiDAR surveys. Ground deformation patterns are identified with respect to topographic characteristics through the use of LiDAR ground displacement measurements. Foundation deformations caused by liquefaction effects are estimated using damage survey data in residential properties in Christchurch and are evaluated with respect to liquefaction-induced ground deformations.
Download or read book Material Characterization and Testing of Cured in place Pipe to Resist Earthquake Related Ground Deformation written by Natalie Lucia Mottl and published by . This book was released on 2019 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis summarizes the testing procedures and key results of full-scale tests on Cured-In-Place Pipe (CIPP) to evaluate its performance under earthquake induced ground deformation. The CIPP used in this work is commercially available as Aqua-pipe, manufactured by Sanexen Environmental Services, Inc. to rehabilitate water mains. The investigation covered in this work includes tensile coupon tests, direct tension tests, friction tests, and direct shear tests. The test results improve the understanding and characterization of the axial force vs. displacement relationship for CIPP movement relative to the host pipe, lining/pipe interface friction, and the effects of geometry, internal pressure, and repeated loading on the axial force vs. relative displacement relationship. The direct tension test results show that the mobilization of axial force is affected by Mode II fracture propagation, friction between the exterior surface of the lining and interior surface of the host pipe, and geometric resistance generated by the relative movement of the lining within a host pipe of variable inside diameter. The most important finding from the direct tension tests is that substantial additional axial forces may be mobilized after debonding as the lining is affected by geometric interference caused by movement through a pipe with variable internal diameter. The test results provide a first-time confirmation of this loading mechanism. The friction tests show that the axial load response is independent of loading rate, with a similar load range and maximum load for the tests conducted at 1 in. (25 mm)/min, 10 in. (250 mm)/min, and 100 in. (2500 mm)/min. The first friction test, done under no pressure, developed larger axial forces due to the greater frictional resistance between the lining and pipe than in a subsequent test under the same testing conditions and geometry. The difference in the axial loads show that over-cleaned field pipes or new ductile iron pipes can have a greater frictional resistance between the lining and pipe than properly cleaned or previously loaded pipes. The most important result from the friction tests involves the influence of internal pressure on axial load response. As the internal pressure increased, the axial load for a given displacement increased linearly. Regressions of axial load vs. internal pressure at the same levels of displacement show a clear linear relationship with similar slopes. The results of the direct shear tests for new ductile iron and field cast iron pipes show a coefficient of friction of 0.61. This value represents the relatively smooth debonded lining surface conditions representative of the CIPP cleaning and lining process for old cast iron water mains. It also represents the interface between the lining and new ductile iron pipe after repeated displacements. The test results show that a coefficient of friction of 0.84 is a good estimate for lining/pipe interfaces that are rough and irregular.
Download or read book Technology Standard of Pipe Rehabilitation written by Lu Wang and published by Springer. This book was released on 2022-02-13 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes the technical method and construction process of underground pipeline testing, cleaning, updating and repairing. It has 20 chapters and an appendix in total. Its content includes: Pipeline rehabilitation construction organization design, Pipeline cleaning, Preparations before construction, Pipeline detection and quality assessment, Pipeline rehabilitation design/method/equipment selection/steps/technical indicators, Pipe Cracking & Bursting method, Sliplining method, Pipe Segments Method, Lining with Inserted hose(improved) method, Cured in place pipe(CIPP), Spray lining, Spiral winding method, Spot repair method, universal construction techniques, construction of general rules, the engineering quality acceptance, construction health, safety, environmental protection and production management, and so on. The appendix is the interpretation for the relevant technical terms in this book. It could help the reader who doesn’t have the basic knowledge about pipe rehabilitation to understand this technology easily. This regulation could be the fundamental discipline for pipeline renewal projects in different industries. It could provide the important basis and criterion for design, construction, management, inspection and acceptance of pipeline renewal projects.
Download or read book Seismic Response of Buried Pipes and Structural Components written by ASCE Committee on Seismic Analysis and published by . This book was released on 1983 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Safety of Buried Steel Pipelines Under Ground induced Deformations GIPIPE written by and published by . This book was released on 2015 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: GIPIPE combines geotechnical engineering concepts with mechanical and pipeline engineering practice, towards developing design guidelines/ recommendations for safeguarding the structural integrity of buried welded steel pipelines under severe ground-induced actions. Permanent ground-induced actions are considered (fault motion, landslides, liquefaction-induced lateral spreading). The guidelines improve and extend current design practice, considering steel pipeline particularities and emphasizing on soil-pipe interaction.^The following intermediate targets have been achieved: Critical evaluation of current design practice and pipeline incidents, towards identifying specific needs for developing pipeline novel design methodologies against geohazards (WP1) ; development of rigorous three-dimensional models for analysing buried pipelines under permanent ground actions (faults, landslides, liquefaction) with emphasis on soil material modelling (WP2) ; preparation of experimental set-up, acquisition of pipe specimens, material testing (WP3) ; performance of large-scale and small-scale experiments, with the purpose of examining soil-pipe interaction (WP4) ; extensive parametric analyses of buried pipelines under ground-induced actions (fault action, landslides, lateral spreading, ^settlements) (WP5) ; proposal of calibrated methodologies for simple and efficient stress analysis of buried pipelines for design purposes (WP6) ; presentation of guidelines for buried pipeline design against permanent ground-induced actions, summarizing existing knowledge and incorporating all results (WP6) ; dissemination of the results through a dedicated workshop (WP6). The GIPIPE results and deliverables are both novel and unique, resulting in development and validation of rigorous and simplified models, capable at describing large permanent deformations of buried pipelines, better understanding of soil-pipe interaction under severe ground-induced actions, significant improvement of pipeline design state-of-the-art in geohazard areas.
Download or read book Hyperbolic Representation of Force Versus Displacement Relationship for Lateral Pipe Movement in Dry Soil written by Richard D. Yovichin (III) and published by . This book was released on 2018 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research and engineering practices for an earthquake response of underground pipelines has focused on permanent and transient ground deformation (PGD and TGD) effects, with the recognition that PGD often causes the most serious local damage in buried pipeline networks. The effects of permanent ground deformation not only apply to earthquakes, but also occur in response to floods, landslides, tunneling, deep excavations, and subsidence caused by dewatering or the withdrawal of minerals and fluids during mining and oil production. Such loading conditions are becoming more important as the needs for technology development increase to combat issues regarding natural hazards, human threats, and construction in congested urban environments. Of key importance in this research is the soil and pipeline interaction with respect to PGD below subsurface. This response is typically highlighted by force vs. displacement relationship and is primarily a function of soil density, depth, and diameter of pipe. The force vs. displacement relationships for transverse horizontal force on pipelines subjected to lateral ground movement are represented by a hyperbola. Transforming such hyperbola into a linear representation can make analysis of soil-pipe interaction much easier. This process allows for the development of a simplistic model representing a wide range of soil characteristics. The development of this simplified, yet practical, nonlinear force vs. displacement relationship for lateral pipe movement, using hyperbolic parameters, is useful to engineers. This approach is convenient for modeling the soil-pipe interaction and is critical for addressing the complexities of soil and pipe performance, consistent with real world soil-pipe behavior, by illustrating the minimum soil control design and the maximum soil resistance.
Download or read book Guidelines for the Seismic Design of Oil and Gas Pipeline Systems written by and published by . This book was released on 1984 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geotechnical Engineering for Transportation Projects written by American Society of Civil Engineers. Geo-Institute and published by . This book was released on 2004 with total page 1266 pages. Available in PDF, EPUB and Kindle. Book excerpt: GSP 126 contains 223 papers presented at Geo-Trans 2004, held in Los Angeles, California, July 27-31, 2004.
Download or read book Rehabilitation of Water Mains written by American Water Works Association and published by American Water Works Association. This book was released on 2001 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: P. 16.
Download or read book NEHRP Recommended Provisions National Earthquake Hazards Reduction Program for Seismic Regulations for New Buildings and Other Structures Commentary written by United States. Federal Emergency Management Agency and published by . This book was released on 2001 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geo frontiers 2011 written by and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structural Design for Fire Safety written by Andrew H. Buchanan and published by John Wiley & Sons. This book was released on 2017-01-30 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural Design for Fire Safety, 2nd edition Andrew H. Buchanan, University of Canterbury, New Zealand Anthony K. Abu, University of Canterbury, New Zealand A practical and informative guide to structural fire engineering This book presents a comprehensive overview of structural fire engineering. An update on the first edition, the book describes new developments in the past ten years, including advanced calculation methods and computer programs. Further additions include: calculation methods for membrane action in floor slabs exposed to fires; a chapter on composite steel-concrete construction; and case studies of structural collapses. The book begins with an introduction to fire safety in buildings, from fire growth and development to the devastating effects of severe fires on large building structures. Methods of calculating fire severity and fire resistance are then described in detail, together with both simple and advanced methods for assessing and designing for structural fire safety in buildings constructed from structural steel, reinforced concrete, or structural timber. Structural Design for Fire Safety, 2nd edition bridges the information gap between fire safety engineers, structural engineers and building officials, and it will be useful for many others including architects, code writers, building designers, and firefighters. Key features: • Updated references to current research, as well as new end-of-chapter questions and worked examples. •Authors experienced in teaching, researching, and applying structural fire engineering in real buildings. • A focus on basic principles rather than specific building code requirements, for an international audience. An essential guide for structural engineers who wish to improve their understanding of buildings exposed to severe fires and an ideal textbook for introductory or advanced courses in structural fire engineering.
Download or read book Water in Road Structures written by Andrew Dawson and published by Springer Science & Business Media. This book was released on 2008-10-21 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: Only book world-wide addressing this topic. The principal output of the European co-operative Action on "Water Movements in Road Pavements & Embankments". Provides unique guidance on assessing water condition and its affects on road performance. Provides unique guidance on assessing and ameliorating contaminant movement in pavement groundwater. Written by leading experts in Europe.
Download or read book Earthquake Resistant Engineering Structures VIII written by C. A. Brebbia and published by WIT Press. This book was released on 2011 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to protect the built environment in earthquake-prone regions of the world It is important to retrofit and rehabilitate existing structures and infrastructure, as well as to ensure the optimal design and construction of new facilities. The high stakes in human life and property in urban densely populated urban areas has been driving research on advances in this field. These advances are presented biennially at a conference organized by the Wessex Institute of Technology. This book contains the papers from the latest conference in the series, which began in 1991. The papers cover Geographical and geotechnical engineering; Seismic hazard and vulnerability; Seismic isolation and energy dissipation; Structural dynamics; Building performance during earthquakes; Retrofitting; Lifelines; Material mechanics and characterisation; Nonlinear numerical analysis; Performance based design; Experimental studies; Safety and security; and Innovative technologies.
Download or read book Advances in Computer Methods and Geomechanics written by Amit Prashant and published by Springer Nature. This book was released on 2020-01-14 with total page 735 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents selected papers from IACMAG Symposium,The major themes covered in this conference are Earthquake Engineering, Ground Improvement and Constitutive Modelling. This volume will be of interest to researchers and practitioners in geotechnical and geomechanical engineering.
Download or read book Building on the Past Securing the Future written by George E. Blandford and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
