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Ian D Moore - One of the best experts on this subject based on the ideXlab platform.

  • 1 USE OF CAVITY EXPANSION THEORY TO PREDICT GROUND DISPLACEMENT DURING Pipe Bursting
    2015
    Co-Authors: V. Fernando, Ian D Moore
    Abstract:

    A parametric study is undertaken using axisymmetric cavity expansion theory to investigate the effect of soil parameters on ground movements in the vicinity of the static Pipe Bursting operations. Comparisons are made with experimental results reported by other workers, and these indicate that cavity expansion theory has the potential to be a valuable design tool. The parametric study shows that ground movements are controlled by soil strength and dilation angle, rather than the elastic soil properties

  • Pipe-soil shear interaction stiffness in horizontal directional drilling and Pipe Bursting
    Geomechanics and Geoengineering, 2010
    Co-Authors: Abdul Ghafar Chehab, Ian D Moore
    Abstract:

    During horizontal directional drilling and Pipe Bursting installations, the shear forces between the Pipe and the surrounding soil play a major role in the tensile loads and stresses experienced by the Pipe. The magnitudes and variations in the shear forces are controlled by the Pipe-soil interaction characteristics. This paper discusses the shear interaction between the Pipe and the soil during those trenchless installations. A Pipe-soil interaction mechanism is described that quantifies the relationship between the shear force and shear displacement, as well as the shear force at which sliding takes place. A simple analytical approach, as well as a finite element procedure, is employed to provide guidelines on practical values of the Pipe-soil interaction stiffness and to investigate the effect of some soil and geometric parameters on the interaction stiffness magnitude.

  • ground displacements from a Pipe Bursting experiment in well graded sand and gravel
    Journal of Geotechnical and Geoenvironmental Engineering, 2009
    Co-Authors: J A Cholewa, R W I Brachman, Ian D Moore, W A Take
    Abstract:

    Pipe Bursting is a construction technique that involves the replacement of an existing buried Pipe with potentially much less surface disturbance than traditional cut and cover construction. However, excessive ground movements associated with Pipe-Bursting operations may lead to damage to surrounding infrastructure. A static Pipe-Bursting experiment was performed in sand and gravel within an 8-m-long, 8-m-wide, and 3-m-deep test pit to quantify the ground displacements from Pipe Bursting. An existing unreinforced concrete Pipe buried 1.385 m below the ground surface was replaced with a high-density polyethylene Pipe. Pulling force and the three-dimensional nature of surface displacements associated with Pipe Bursting are examined. The 4-m wide surface response had a peak vertical displacement of 6 mm. In addition, transverse displacements of 1.2 mm resulted in the formation of a tension crack in the ground above the concrete Pipe. This experiment offers data that improves the understanding of the mechanisms of ground disturbance, and provides unique experimental data for calibration of numerical models.

  • Response of a polyvinyl chloride water Pipe when transverse to an underlying Pipe replaced by Pipe Bursting
    Canadian Geotechnical Journal, 2009
    Co-Authors: J A Cholewa, Richard W I Brachman, Ian D Moore
    Abstract:

    An existing deteriorated or hydraulically undersized Pipe can be replaced with a new Pipe by static Pipe Bursting. Cavity expansion during Pipe Bursting induces ground movements, which may potentially damage nearby buried utilities if they are in close proximity to the Pipe Bursting operation. A large-scale Pipe Bursting experiment was performed in an 8 m long, 8 m wide, and 3 m deep test pit filled with a well-graded sand and gravel soil. A polyvinyl chloride (PVC) Pipe, crossing transversely and 0.45 m above the existing Pipe being replaced, was instrumented with strain gages to quantify the response of that transverse utility to the ground movements associated with Pipe Bursting. In this paper, the measured strain and corresponding deflection of the PVC Pipe are examined and compared with measurements of surface uplift. The maximum longitudinal strain measured in the Pipe was less than 0.1% and its vertical diameter decreased by only 0.5%, suggesting that ground displacements induced by Pipe Bursting d...

  • response to overburden pressure of an hdpe Pipe pulled in place by Pipe Bursting
    Canadian Geotechnical Journal, 2007
    Co-Authors: R W I Brachman, Ian D Moore, B M Lapos
    Abstract:

    Measurements of vertical and horizontal Pipe deflections are reported for a high-density polyethylene (HDPE) Pipe experiencing an increase in vertical pressure after being pulled in place using Pipe Bursting techniques. Three tests were conducted to measure the diameter change of a 165 mm outside diameter HDPE Pipe after replacing an intact clay Pipe with an external diameter of 184 mm backfilled with a poorly graded dense sand. A fourth test measured the response of the HDPE Pipe after replacing an intact clay Pipe with an external diameter of 128 mm. Variable Pipe deflections were measured in each test, which depended on the interactions among the broken clay Pipe fragments surrounding the HDPE Pipe. The orientation of the clay fragments controls whether the increase in vertical pressure is transferred immediately to the HDPE Pipe. In some cases, the fractured clay Pipe produced a structural ring encasing the HDPE Pipe, thus providing additional hoop strength. Two of the replacement tests did not record...

Samuel T Ariaratnam - One of the best experts on this subject based on the ideXlab platform.

  • Current trends in Pipe Bursting for renewal of underground infrastructure systems in North America
    Tunnelling and Underground Space Technology, 2014
    Co-Authors: Samuel T Ariaratnam, Jason S Lueke, John K. Michael
    Abstract:

    Abstract As municipalities seek innovative technologies that can provide cost savings in addressing their underground infrastructure needs, trenchless Pipe replacement, or Pipe Bursting, has become a viable option. Pipe Bursting is a construction method used for replacing existing underground water, sewer, or gas infrastructure with a new line of equal or larger diameter. It is the only construction option capable of replacing a Pipeline along the same alignment without physically removing the existing line. This provides the advantage of not having to secure additional right-of-way to facilitate installation of a new Pipeline. Since its origins during the 1980s, the use of Pipe Bursting has grown significantly in North America. This paper provides discussion on current trends in trenchless Pipe replacement including results captured from a survey questionnaire examining 886 projects from 2007 to 2010 in Canada and the United States. The results examined various factors including equipment utilized, procurement and payment structures, Pipe upsizing limits, and construction risks in Pipe Bursting.

  • Survey questionnaire results of the current level of knowledge on trenchless technologies in China
    Tunnelling and Underground Space Technology, 2010
    Co-Authors: Samuel T Ariaratnam
    Abstract:

    Abstract With a growing population and densely populated urban environments, China is looking at alternative methods of underground Pipeline installation and replacement of their aging infrastructure. Conventional open trench activities result in disruption to these urban centers through road closures, traffic delays, traffic detours, loss of access to homes and business, unsightliness, noise and general disruption for everyone. Trenchless technologies are a viable and sustainable solution to China’s buried infrastructure. Numerous challenges are present when promoting trenchless technologies in China including minimal local engineering knowledge, lack of trained contractors, lack of specifications, and system impact concerns raised by government owners. This paper presents the results of a survey questions obtained from a cross-section of 209 Chinese engineers from Shanghai, Beijing, Shengyang, Chongqing, and Guangzhou to gain a snapshot of the current level of knowledge on trenchless construction methods. The results reveal an understanding of trenchless technology in general; however, a lack of understanding of technologies such as lining of Pipe, trenchless grouting, auger boring, and Pipe Bursting. Pipe jacking and horizontal directional drilling are currently by far the most recognized and understood trenchless technologies in China.

  • Simplified model for numerical calculation of pull forces in static Pipe-Bursting operations
    Tunnelling and Underground Space Technology, 2007
    Co-Authors: Samuel T Ariaratnam, Ulf-hilmar Hahn
    Abstract:

    Trenchless Pipe replacement, or Pipe Bursting, is defined as the replacement of an original Pipe by fragmenting the existing conduit and simultaneously installing product Pipe in its place. In the static method of Pipe replacement, the original Pipe fails in tension by radial forces developed from the cone-shaped Bursting head geometry that are applied to the Pipe wall from within the Pipe, as it is pulled or pushed through the existing Pipe. The fragmented pieces are pressed into the surrounding soil as it is being displaced, thus creating a cavity for the product Pipe. This paper presents a simplified model to calculate the maximum pull force (a function of the friction, Bursting, and soil compression shear forces) required to be overcome to complete a static Pipe-Bursting pull. Based on site-specific information, the model provides an initial avenue for contractors, engineers, and manufacturers in planning successful trenchless Pipe replacement projects.

  • PARAMETERS FOR DESIGNING STATIC Pipe Bursting OPERATIONS
    New Pipeline Technologies Security and Safety, 2003
    Co-Authors: Ulf-hilmar Hahn, Samuel T Ariaratnam
    Abstract:

    Trenchless construction, such as Pipe replacement, has become popular in recent years as the technologies are recognized as feasible, practical, and cost effective alternatives to existing traditional underground utilities installation methods. This paper provides a theoretical outline, incorporating site-specific aspects such as depth of cover, soil conditions, and original Pipe material, to calculate and quantify the maximum pull force encountered during a static Pipe Bursting pull.

  • rehabilitation of underground infrastructure utilizing trenchless Pipe replacement
    Practice Periodical on Structural Design and Construction, 2001
    Co-Authors: Jason S Lueke, Samuel T Ariaratnam
    Abstract:

    Trenchless Pipe replacement, or Pipe Bursting, is a construction method that provides an alternative for rehabilitating underground infrastructure with minimal disruption to surface traffic. It is recognized as the only method of trenchless Pipe rehabilitation in which a buried Pipe can be replaced with a completely new Pipe that functions independently of the existing line and permits the diameter of the new line to be increased. This paper presents an overview of three Bursting systems currently used in the North American industry with discussion on the anatomy of a Pipe Bursting project, sequencing, risks, and a comparison of project elements to traditional open trench methods of construction. This paper concludes with three case studies describing the application of Pipe Bursting on projects that extended the current operating envelope of the technology to illustrate project specific engineered solutions to particular rehabilitation requirements. Through the sharing of knowledge and experience, a grea...

Jason S Lueke - One of the best experts on this subject based on the ideXlab platform.

  • Current trends in Pipe Bursting for renewal of underground infrastructure systems in North America
    Tunnelling and Underground Space Technology, 2014
    Co-Authors: Samuel T Ariaratnam, Jason S Lueke, John K. Michael
    Abstract:

    Abstract As municipalities seek innovative technologies that can provide cost savings in addressing their underground infrastructure needs, trenchless Pipe replacement, or Pipe Bursting, has become a viable option. Pipe Bursting is a construction method used for replacing existing underground water, sewer, or gas infrastructure with a new line of equal or larger diameter. It is the only construction option capable of replacing a Pipeline along the same alignment without physically removing the existing line. This provides the advantage of not having to secure additional right-of-way to facilitate installation of a new Pipeline. Since its origins during the 1980s, the use of Pipe Bursting has grown significantly in North America. This paper provides discussion on current trends in trenchless Pipe replacement including results captured from a survey questionnaire examining 886 projects from 2007 to 2010 in Canada and the United States. The results examined various factors including equipment utilized, procurement and payment structures, Pipe upsizing limits, and construction risks in Pipe Bursting.

  • rehabilitation of underground infrastructure utilizing trenchless Pipe replacement
    Practice Periodical on Structural Design and Construction, 2001
    Co-Authors: Jason S Lueke, Samuel T Ariaratnam
    Abstract:

    Trenchless Pipe replacement, or Pipe Bursting, is a construction method that provides an alternative for rehabilitating underground infrastructure with minimal disruption to surface traffic. It is recognized as the only method of trenchless Pipe rehabilitation in which a buried Pipe can be replaced with a completely new Pipe that functions independently of the existing line and permits the diameter of the new line to be increased. This paper presents an overview of three Bursting systems currently used in the North American industry with discussion on the anatomy of a Pipe Bursting project, sequencing, risks, and a comparison of project elements to traditional open trench methods of construction. This paper concludes with three case studies describing the application of Pipe Bursting on projects that extended the current operating envelope of the technology to illustrate project specific engineered solutions to particular rehabilitation requirements. Through the sharing of knowledge and experience, a grea...

  • Winter Simulation Conference - Application of simulation in trenchless renewal of underground urban infrastructure
    Proceedings of the 31st conference on Winter simulation Simulation---a bridge to the future - WSC '99, 1999
    Co-Authors: Jason S Lueke, Samuel T Ariaratnam, Simaan Abourizk
    Abstract:

    Pipe Bursting is a type of trenchless technology that enables the construction, rehabilitation, or replacement of underground urban infrastructure with minimal disruption to surface activity. This construction process facilitates the installation of sewer Pipes and gas mains of similar or larger diameters at the same location as existing lines. The upsizing capability is particularly relevant in situations where greater flow capacities are required due to increased urbanization. The paper presents an application of a simulation platform developed at the University of Alberta called Simphony, used to create a special purpose simulation application of the Pipe Bursting process. Results obtained from this model can assist owners, engineers, contractors, and equipment manufacturers in designing and planning Pipe Bursting projects.

Gonzales Gonzales, Marly Dorelly Yhoseph - One of the best experts on this subject based on the ideXlab platform.

  • “Propuesta de renovación de redes de agua potable mediante el método Pipe Bursting urb. San Diego distrito SMP, Lima-2018”
    'Universidad Cesar Vallejo', 2018
    Co-Authors: Gonzales Gonzales, Marly Dorelly Yhoseph
    Abstract:

    RESUMEN En el presente trabajo de investigación se platea dar una solución rápida y factible para la renovación de redes de agua potable, ya que en la actualidad existe la problemática de la falta de renovación de redes de agua potable las cuales deberías cambiarse por los problemas de fallas y antigüedad, porque el agua es un recurso indispensable para la vida de todos, es por ello que la presente investigación se tomara como población de estudio al segundo distrito con mayor población en el departamento de Lima que es el Distrito de San Martin de Porres y teniendo como muestra la Urb. San diego. En tal sentido, esta tesis busca dar a conocer el método Pipe Bursting para este tipo de proyectos a los estudiantes e ingenieros civiles para la aplicación de nuevas tecnologías que mejoran la calidad de vida, aumentan la productividad y también nos dan la oportunidad de capacitarse y seguir aprendiendo. El desarrollo de este proyecto de investigación se dividió en dos partes: La primera se basó en la recaudación de datos del método Pipe Bursting mediante fotos, videos y entrevistas, además de una encuesta realizada en la Urb. San diego. La segunda parte se abordó el análisis y cálculos con los datos recolectados in situ. Para proceder a procesar los datos de la encuesta sobre el impacto social y ambiental, el cálculo tanto en el Excel, Civil 3d, watercad para el rediseño de la red de distribución de redes de agua potable y el MSproject para determinar la programación de obra de la renovación de redes de agua potable mediante el método Pipe Bursting. De acuerdo a los resultados obtenidos, se llegó a la conclusión que el método Pipe Bursting influye positivamente en la renovación de redes de agua potable en la Urb. San Diego, distrito de San Martin de Porres, que a pesar de ser un método que se conoce poco a nivel nacional es recomendable porque tiene grandes ventajas tanto ambientales y sociales, así como también en el tiempo de ejecución y el diseño aplicado

  • “Propuesta de renovación de redes de agua potable mediante el método Pipe Bursting urb. San Diego distrito SMP, Lima-2018”
    'Universidad Cesar Vallejo', 2018
    Co-Authors: Gonzales Gonzales, Marly Dorelly Yhoseph
    Abstract:

    TesisLima NorteEscuela Profesional de Ingeniería CivilDiseño de Obras Hidráulicas y SaneamientoRESUMEN En el presente trabajo de investigación se platea dar una solución rápida y factible para la renovación de redes de agua potable, ya que en la actualidad existe la problemática de la falta de renovación de redes de agua potable las cuales deberías cambiarse por los problemas de fallas y antigüedad, porque el agua es un recurso indispensable para la vida de todos, es por ello que la presente investigación se tomara como población de estudio al segundo distrito con mayor población en el departamento de Lima que es el Distrito de San Martin de Porres y teniendo como muestra la Urb. San diego. En tal sentido, esta tesis busca dar a conocer el método Pipe Bursting para este tipo de proyectos a los estudiantes e ingenieros civiles para la aplicación de nuevas tecnologías que mejoran la calidad de vida, aumentan la productividad y también nos dan la oportunidad de capacitarse y seguir aprendiendo. El desarrollo de este proyecto de investigación se dividió en dos partes: La primera se basó en la recaudación de datos del método Pipe Bursting mediante fotos, videos y entrevistas, además de una encuesta realizada en la Urb. San diego. La segunda parte se abordó el análisis y cálculos con los datos recolectados in situ. Para proceder a procesar los datos de la encuesta sobre el impacto social y ambiental, el cálculo tanto en el Excel, Civil 3d, watercad para el rediseño de la red de distribución de redes de agua potable y el MSproject para determinar la programación de obra de la renovación de redes de agua potable mediante el método Pipe Bursting. De acuerdo a los resultados obtenidos, se llegó a la conclusión que el método Pipe Bursting influye positivamente en la renovación de redes de agua potable en la Urb. San Diego, distrito de San Martin de Porres, que a pesar de ser un método que se conoce poco a nivel nacional es recomendable porque tiene grandes ventajas tanto ambientales y sociales, así como también en el tiempo de ejecución y el diseño aplicado

Alireza Bayat - One of the best experts on this subject based on the ideXlab platform.

  • Estimation of Soil Expansion Force in Static Pipe Bursting: Comparison between Numerical and Analytical Solutions
    International Journal of Geomechanics, 2017
    Co-Authors: Ka Hou Ngan, Ali Rostami, Alireza Bayat
    Abstract:

    AbstractPull-force estimation is important for the design of static Pipe-Bursting projects. Among the three components of the pull force, soil expansion force has a significant impact. In this study, a numerical model was employed to determine the soil expansion pressures acting on the expander during Pipe Bursting. The expansion pressures were used to calculate soil expansion forces, which were then compared to those calculated on the basis of a large-strain analytical cavity expansion solution and those measured from laboratory experiments. Additionally, a parametric study, using numerical modeling and the analytical solution, was conducted to examine the influence of depth of cover on the calculated expansion forces. Typical Pipe geometries and soil properties in Edmonton, Alberta, Canada, were used for the parametric study. The results reveal that although the soil expansion force obtained from the analytical solution was higher than that from numerical modeling, the difference decreased when the dept...

  • Predicting Soil Expansion Force during Static Pipe Bursting Using Cavity Expansion Solutions
    International Journal of Geomechanics, 2016
    Co-Authors: Ka Hou Ngan, Ali Rostami, Alireza Bayat
    Abstract:

    AbstractThe prediction of total pull force is critical for static Pipe-Bursting installation. As a major component of the total pull force, soil expansion prediction is also important; however, there are currently limited methods available for such prediction. In this paper, three cavity expansion solutions were used to predict soil expansion pressure acting upon the expander (Bursting head) during static Pipe Bursting. The determined soil expansion pressure was then used to calculate the expansion force required for Pipe Bursting with or without consideration of the soil collapse. Calculated results were then compared with those from laboratory Pipe-Bursting experiments to evaluate the feasibility of the calculation methods. The comparison indicated that the large-strain cavity expansion solution reasonably predicted the soil expansion force. The small-strain solution significantly overestimated the soil expansion force. Additionally, considering soil collapse during Pipe Bursting resulted in a remarkabl...