Arch Culvert » Concrete Arch http://www.archculvert.com Arch Culvert | Precast, Cast in site, Product and Project Thu, 29 Jul 2010 10:10:45 +0000 http://wordpress.org/?v=2.8.4 en hourly 1 MORWELL TUNNELS – BURIED ARCH CULVERT UNDER VERY HIGH FILL http://www.archculvert.com/precast/morwell-tunnels-%e2%80%93-buried-arch-culvert-under-very-high-fill.html http://www.archculvert.com/precast/morwell-tunnels-%e2%80%93-buried-arch-culvert-under-very-high-fill.html#comments Thu, 22 Oct 2009 03:33:39 +0000 irwanbee http://www.archculvert.com/?p=34 buried arch culvert high fill
MORWELL TUNNELS –DESIGN OF A BURIED ARCH CULVERT UNDER VERY HIGH FILL
The Morwell River Diversion project in the Latrobe Valley requires the construction of four conveyor tunnels to carry the main coal conveyors for the Morwell power station under more than 40 metres of fill. They are believed to be the deepest and longest conveyor tunnels constructed under fill in Australia. Reinforced Earth successfully tendered for the design and supply of the tunnels with a precast concrete arch design based on their TechSpan system. The contract required the design of a complete system, including raft foundations and waterproofing. In addition to very high fill loads the design was required to allow for very high settlements and the possible presence of acidic soils.

This paper describes the arch design process, which included both two and three dimensional finite-element analysis for the arch cross section design, and to check the effect of differential longitudinal loading and foundation conditions. The effect of many alternative ground improvement options was considered, in order to optimise the foundation design. The final design was developed after the award of the contract and used three different options, depending on the ground and weather conditions at the time of construction. The following information is presented in the paper:

• Comparison of bending moments and forces in the adopted arch profile with alternative profiles.
• Comparison of foundation bending moments and forces for different raft cross-sections and foundation treatments.
• Comparison of alternative analysis methods for the raft foundations
• Comparison of settlement analysis results with analyses carried out by the project primary designers (SMEC Australia).
Doug Jenkins, Interactive Design Services Pty Ltd, Chris Lawson, Reinforced Earth Pty. Ltd.

Incoming search terms for the article:

]]> http://www.archculvert.com/precast/morwell-tunnels-%e2%80%93-buried-arch-culvert-under-very-high-fill.html/feed 0 TechSpan® – Precast Arches by The Reinforced Earth Company http://www.archculvert.com/precast/techspan-precast-arches-by-the-reinforced-earth-company.html http://www.archculvert.com/precast/techspan-precast-arches-by-the-reinforced-earth-company.html#comments Fri, 04 Sep 2009 03:50:58 +0000 irwanbee http://www.archculvert.com/?p=3 TechSpan® – Precast Arches

TechSpan® is the most reliable, cost-effective precast concrete arch system available for the construction or replacement of culverts and bridges.

Advanced design procedures and unique fabrication capabilities provide the most efficient use of concrete and reinforcing steel. Unlike most alternative systems, efficiency and economy of design increase progressively as the embankment height over the crest increases. Construction of TechSpan is simple, rapid and predictable with small crews and conventional equipment.

Name : TechSpan
by : The Reinforced Earth Company

Incoming search terms for the article:

]]> http://www.archculvert.com/precast/techspan-precast-arches-by-the-reinforced-earth-company.html/feed 0