Underground pipelines are widely applied in the so-called lifeline engineerings. It shows according to seismic surveys that the damage from soil liquefaction to underground pipelines was the most serious, whose failures were mainly in the form of pipeline uplifting. In the present study, dynamic centrifuge model tests were conducted to study the uplifting behaviors of shallow-buried pipeline su...

The effectiveness of remedial measures for the stability onshore buried pipelines against uplift mechanism induced by soil liquefaction, in event an earthquake, is investigated through 1-g shaking table tests. This study aims at proposing mitigation solutions that may be alternative to already existing and currently adopted systems, accounting a set requirements cannot omitted context long trac...

Aiming to study the temperature distribution along buried pipelines containing hot fuel oil, a new large-scale laboratory is constructed from perspective of corresponding fluid thermophysical properties. Also, modeling pipe-line, and soil around it, was performed pipeline for observation all three modes turbulent, laminarization, laminar flow, which validated by experimental results. Furthermor...

In this work, an innovative system for structural health monitoring of metallic pipes is presented. The proposed relies on using the pipeline as a waveguide propagation electromagnetic (EM) signal; possible anomalies in pipe provoke partial reflection propagating EM signal. Different from previous works that address similar applications, test signal injected pipeline/waveguide through coaxial/w...

Numerous factors affect the soil pressure distributions around buried pipes, including shape, size, and stiffness of pipe, burial depth, surrounding soil. Additionally, to some extent, a pipe can benefit from arching effect, where overburden surcharge at crown be supported by adjacent As result, only needs support portion load that is not transferred This paper presents numerical investigations...

The effective planning of water distribution system renewal requires accurate quantification of the structural deterioration of water mains. As typical water distribution systems comprise hundreds and even thousands of buried pipes, direct inspection of all of them is often prohibitively expensive. Identifying water main breakage patterns over time is an effective and inexpensive alternative to...

Guided wave phased-array focusing techniques have been studied and applied in the longrange guided wave inspection of industrial pipelines. Advantages include longer inspection distance, greater wave penetration power and higher detection sensitivity. For reasons of protection, safety and thermal efficiency, a large percentage of pipes are coated and/or encased and buried underground. A phased-...

A novel bait station referred to as a virtual bait station was developed and tested against field populations of the invasive Argentine ant, Linepithema humile (Mayr) (Hymenoptera: Formicidae), at White Beach, Camp Pendleton, in Oceanside, CA. White Beach is a nesting habitat for an endangered seabird, the California least tern (Sterna antillarum browni Mearns). The beach is heavily infested wi...

This study evaluates temperatures measured at district heating (DH) valves in manholes and their usability for non-destructively assessing the thermal performance of buried DH pipes. The was conducted as a field test which part network shut down temperature decline analysed terms absolute response time from pipe to top valve. calculated supply by drainage were good agreement, with 1% deviation....