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Spanish rail project wins top ACI awards


Spanish rail project - Viaduct Over River Almonte in Garrovillas de Alconétar, Cáceres at Extremadura - has won the Excellence in Concrete Construction Award for 2018 constituted by the American Concrete Institute (ACI).

ACI is a leading authority and resource worldwide for the development and distribution of consensus-based standards and technical resources, educational programs and certifications for individuals and organizations involved in concrete design, construction and materials.

This award is given annually to one project that demonstrates excellence in concrete innovation and technology and stands out above all other entries, said a statement from the institute.

The new high-speed rail line is under construction between Madrid and the Extremadura, a western Spanish region bordering Portugal. The line will cross over the River Almonte on a 996 m long viaduct - a concrete arch bridge with a main span of 384 m.

Designed to carry 350 km/h rail traffic, the viaduct had to meet rigorous dynamic, serviceability, and safety criteria; and it required complex, staged calculations based on nonlinear material and nonlinear geometry behaviors.

Nevertheless, it is aerodynamic and slender, largely due to key design features, including a four-legged arch configuration; 80 MPa (11,603 psi) high-performance concrete; an efficient erection method, with temporary towers and stays; and an innovative monitoring system.

The viaduct’s 384 m main span makes it the largest railway bridge in Spain and the world’s largest concrete arch bridge for high-speed rail service. Its design combines structural efficiency, out-of-plane stability, improved response against cross wind effects, and aesthetics, said the statement.

The design is also environmentally friendly, as the bridge comprises durable materials, has been designed for expedient maintenance, and will include a bespoke barrier that will force birds to soar upward and above the overhead mast line, it added.

The bridge arch comprises high-performance, self-consolidating concrete. The complex erection procedure required the development of singular construction devices. The bridge was constructed using a ground-breaking instrumentation and monitoring system that provides information regarding the behavior of the structure during construction and service.

Besides the Spanish project, several others were honoured during the Institute’s Concrete Convention & Exposition  held recently in Las Vegas, US.

The ACI Excellence in Concrete Construction Awards were created to honor the visions of the most creative projects in the concrete industry, while providing a platform to recognize concrete innovation, technology, and excellence across the globe, said the statement from the institute.

To be eligible for participation in the Excellence Awards, projects needed to be winners at a local ACI Chapter level and submitted by that Chapter or chosen by one of ACI’s International Partners, it added.  

An independent panel of esteemed industry professionals judged projects and selected winners based on architectural and engineering merit, creativity, innovative construction techniques or solutions, innovative use of materials, ingenuity, sustainability, resilience, and functionality.

The additional winning projects were selected from among several possible categories, including:

•Decorative Concrete

*First Prize: Roofing of the Montpellier-South of France TGV Station in Montpellier, Herault, France.
*Second Prize: Water Garden in Santa Monica, California, US.

•High-Rise Buildings

*First Prize: Reston Station OB1 Tower in Reston, Virginia, US.
*Second Prize : Nexus Shopping and Business in Setor Marista, Goiânia, Brazil.


*First Prize: Viaduct Over River Almonte in Garrovillas de Alconétar, Cáceres, Extremadura, Spain.
*Second Prize: Viroflay Underground Train Station – in Meudon, Hauts-de-Seine, France.

•Low-Rise Buildings
*First Prize: University of Iowa Visual Arts Building, in Iowa City, Iowa, US.
*Second Prize: Design & Build of South Marina Yacht Club at Lusail (BP15) in Doha, Qatar.

•Mid-Rise Buildings
*First Prize: 1200 Intrepid Avenue in Philadelphia, Pennsylvania, US
*Second Prize: Royal Alberta Museum in Edmonton, Alberta, Canada.

•Repair & Restoration
*First Prize: Provo City Center Temple in Provo, Utah, US.
*Second Prize: Ford Theaters Off Season Improvements Phase 2 & 3 in Hollywood, California, US.

The winning project details can be found at Entries for the 2019 Excellence in Concrete Construction Awards are being accepted now through April 2, 2019.-TradeArabia News Service

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