Analyse fiabiliste du comportement axial des conduites d'assainissement

Benmansour, A; Abdallah, Ali M.; Masrouri, Farimah; Auvinet, G.

doi:10.1139/t97-010

Cited by 5 publications

(3 citation statements)

References 1 publication

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“…Usually the effectiveness of the traditional finite elements method and the possibilities of a probabilistic approach and a stochastic modelling are combined. Only a limited number of studies [10][11][12][13] have been analyzed on 0266-352X/$ -see front matter Ó 2004 Elsevier Ltd. All rights reserved. doi:10.1016/j.compgeo.2004.…”

Section: Introduction and Literature Reviewmentioning

confidence: 99%

Longitudinal variability of soils and structural response of sewer networks

Elachachi

Breysse

Houy

2004

Computers and Geotechnics

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Section: Introduction and Literature Reviewmentioning

confidence: 99%

Longitudinal variability of soils and structural response of sewer networks

Elachachi

Breysse

Houy

2004

Computers and Geotechnics

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“…Benmansour et al [3] carried out an analysis of the drainage pipelines in the Greater Lyon region of France with the CCTV technology. It found that the main cause of pipeline failure was related to its longitudinal response, and the pipeline defect occurred mostly at the joints.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Response of Gasketed Bell‐and‐Spigot Joint of Concrete Pipeline under Multifield Coupling

Fang

et al. 2020

Advances in Civil Engineering

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Concrete pipe may suffer joint failure under the coupling effect of internal fluid and overlying load, which may lead to pipe leakage. Based on Abaqus and Fluent finite element software, a three-dimensional refined model of drainage pipeline with gasketed bell-and-spigot joints and flow field model inside the pipeline was established. Fully considering the compression of the gasket during pipeline assembly and pipe-soil interaction, the fluid-structure coupling numerical simulation was carried out by using the MpCCI (Mesh-based parallel Code Coupling Interface) platform, and the mechanical response of the concrete pipe joint under the multifield loads coupling effects of burial condition, traffic load, and internal fluid was studied. The accuracy of the coupling model was verified through the full-scale tests that have been carried out. The influences of various factors on the circumferential stress and vertical deformation of the joint were mainly studied. The result reveals that the influence of different working conditions on the circumferential stress of the pipe joint is mainly concentrated on the crown and the invert of the joint, the areas vulnerable to tensile damage. The change of flow field leads to a slight difference in the vertical deformation of the joint, while variation in gasket hardness and cushion compactness has a certain influence on the vertical deformation of the joint. The change of buried depth has a negative correlation to the vertical deformation of the joint, and the change of load position has a significant nonlinear effect. The result provides a theoretical basis for further research on the mechanical mechanism of the pipeline joints during operation.

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“…A circumferential failure in a pipe is usually a result of an extreme longitudinal tensile stress condition. Benmansour et al [4] evaluated data from sewer lines in Nice, France, which total 850 km in length and involve primarily reinforced concrete pipes. Circumferential cracks and fissures, resulting from longitudinal bending of the pipeline, were found to be the most common type of structural defects (15.7% of the total pipeline system).…”

Section: Introductionmentioning

confidence: 99%

Physical modeling of buried PVC pipes overlying localized ground subsidence

2020

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The last half-century has witnessed a proliferation in the use of polyvinyl chloride (PVC) pipes in civil engineering applications. However, little physical data are available to date to assess conformance with performance limits of these pipes subjected to events involving localized ground subsidence. In this study, experimental results are generated and evaluated from a series of physical models involving a buried PVC pipe overlying a localized subsiding bedding zone. Ground subsidence was simulated using a precisely controlled trapdoor system positioned at mid-length of the pipe. A technique including the use of a custom-made displacement transducer was developed as part of this study to facilitate collection of continuous deflection profiles along the axis of the pipes. The progressive development of soil arching was also monitored using earth pressure sensors placed on the top, sides, and at several locations beneath the pipe, both within and beyond the zone of ground subsidence. Strains in the external wall of the pipe were also monitored. The results indicate that significant bending developed in the portion of the pipe traversing the subsidence zone, especially at the pipe crown. Beyond this point, radial deflections of the pipe cross section continued to be detected along the pipe length to distances of approximately four pipe diameters. Ground subsidence induced a severe redistribution of the earth pressures measured in the soil mass surrounding the pipe. A significant increase in vertical soil pressures beneath the pipe was captured within a distance of about one pipe diameter outside the subsidence zone. The overall response of the PVC pipe to localized ground subsidence was found to improve with increasing backfill density and decreasing soil confinement.

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Analyse fiabiliste du comportement axial des conduites d'assainissement

Cited by 5 publications

References 1 publication

Longitudinal variability of soils and structural response of sewer networks

Longitudinal variability of soils and structural response of sewer networks

Mechanical Response of Gasketed Bell‐and‐Spigot Joint of Concrete Pipeline under Multifield Coupling

Physical modeling of buried PVC pipes overlying localized ground subsidence

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