STRUCTURE Magazine NO 228 - Freyssinet

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The isolation devices were successfully tested at the University of San Diego and comply with new European Standard. EN 15129 on anti-seismic devices.
The major project

HALIÇ BRIDGE P. 10 ISTANBUL—TURKEY

2nd semester 2013 — NO. 228

STRUCTURE Magazine P. 06 FOREVA® REPAIR SOLUTIONS P. 07 CURRENT PROJECTS AROUND THE WORLD P. 20 EARTHQUAKE PROTECTION WITH ISOSLAB

THE IMAGE

More about MuCEM

Structure Magazine — 2nd semester 2013 — no. 228

Major innovations for all our business areas The word

F

or many years, Freyssinet has implemented a proactive research and development policy, which has enabled us to develop a number of major innovations for all our business areas. This passion for innovation is part of our genetic make-up and is the legacy of our founder, Eugène Freyssinet. On sites the world over and in our design ʾ—      —ʽ   – Constant innovation allows us to keep pace with our customers’ and partners’ expectations, increase our technical lead and invent the technology of the future. As it approaches its 70th anniversary, Freyssinet is looking to the future more resolutely than ever and striving to continue this fundamental policy.

JÉRÔME STUBLER, CEO OF SOLETANCHE FREYSSINET

Contents

06

10

The encounter The major project Alain Ghenassia and Alain Huynh The Haliç Bridge in talk about Foreva® repair solutions. the heart of Istanbul.

07 Around the world Freyssinet projects in Malaysia, Australia, France and Saudi Arabia.

12 Achievements We take a look at some

of our flagship Construction and Repair projects.

Welcome to the new Freyssinet magazine format. Structure Magazine is the successor to Soils and Structures, providing a twice-yearly overview of our projects worldwide. The magazine complements our web site www.freyssinet.com, which contains more news and information about our business.

20 The technology Earthquake protection with Isoslab.

02

Soletanche Freyssinet Group entities.

03

22 The group News in brief from other Structure Magazine, Freyssinet’s twice-yearly magazine Communication Department: 1 bis, rue du Petit Clamart, 78148 Vélizy-Villacoublay Cedex, France œ×   manager: Guillaume Billaroch œ ×   Õ  ˜ Juliette Dumoulinœ Õ   ˜ Agnès Baranger, Isabelle Mennesson et Thomas Colombain Design: œâ ˜ EMAPRESS œ æ ˜ Telelingua œ â ˜ 4,000 copies in French, 8,000 copies in English and 2,000 copies in SpanishœÛååà˜ pending â  ˜ Soletanche Freyssinet Photo Library, Ian Hanning - REA, IDE, Malgorzata Kistryn - Fotolia.com, Luc Benevello, Atkins, Thierry Chomel & Happy Day Contact: [email protected]

Structure Magazine — 2nd semester 2013 — no. 228

Last minute

582 metres

The figure Is the length of the longest stay cable installed by Freyssinet on the Russky Island Bridge in Vladivostok. This world record was achieved thanks to new compact sheath technology, which reduces the wind resistance of the stay cables by 20%.

The news

Û   Ø—  å  , Freyssinet is working as part of a consortium to bring the 4,820 m long Puymorens Tunnel into line with fire safety standards. The project includes the creation of nine safety shelters, an egress passage, fire protection work and the construction of two structures at the ends of the tunnel to set up ventilators. A second phase of work is scheduled for Spring 2014. The contract Freyssinet is set to design, produce and install the stay cables for the third Bosphorus bridge in Turkey. With a total length of 2,164 m, the bridge will set a new world record with a 1,408 m cable-stayed span. Freyssinet is also carrying out the prestressing work on the structure, through its Turkish subsidiary Freysaş.

Structure Magazine — 2nd semester 2013 — no. 228

ODAYERI

Sultan Yavuz Selim Bridge GARIPÇE

ARNAVUTKOŸ

SARIYER

Black Sea

RIVA POYRAZKÖY

GÖKTÜRK

Fatih Sultan Mehmet Bridge MASLAK

SULTANGAZI

ISTANBUL ROMANIA

BEYKOZ

Bosphorus Bridge

RUSSIA

Istanbul

PASAKÖY Black Sea

BULGARIA

ÇEKMEKÖY

Ankara GREECE

TURKEY

IRAN

Haliç Bridge

KADIKÖY

SYRIA Mediterranean Sea

IRAQ

Sea of Marmara

5 km

Trade show

FIB Mumbai

Freyssinet will be at the Fourth International FIB Congress being held in Mumbai, India, from 10 to 14 February 2014. This year’s congress is on the theme of Improving Performance of Concrete Structures. Come and see us to find out about Freyssinet’s techniques and solutions. For more information, visit http://www.fibcongress2014mumbai.com/

“Safety is our priority worldwide “ é    —   remains our one and only objective. We have a number of initiatives in place to achieve this, particularly «Managing safety» training, 15-minute safety sessions, strengthening dialogue and organising preventive safety observations. At Freyssinet, we are doing all we can to ensure that safety remains our priority and encourage exemplary safety conduct in our employees.

The phrase

ßÓàç×Þâ×ÞæÛ×ä DEPUTY MANAGING DIRECTOR OF FREYSSINET

04 05

The next big thing

The Freyssinet web site has a new look. Go to www.freyssinet.com for all our news, techniques and history and links to the web sites of our entities all over the world.

Structure Magazine — 2nd semester 2013 — no. 228

The encounter ÓÞÓÛàÙÚ×àÓååÛӗFOREVA® DEVELOPMENT DIRECTOR ÓÞÓÛàÚçëÚà—FOREVA® MARKETING MANAGER

Foreva®˖— the quality repair label Stringent performance criteria

Designing and applying structural reinforcement products requires continuous research into new solutions at our laboratories. We have been developing FOREVA® products and solutions for over six years, and the range now consists of more than 200 systems for repairing structures, including chemical and electrochemical treatments and mechanical strengthening methods FOREVA® solutions can be used for a wide range of problems, from treating cracks in concrete through cathodic protection (to prevent reinforcement corrosion) and earthquake protection to additional prestressing. They are suitable for all types of structure, ancient or modern, including buildings, bridges, civil engineering, hydraulic and industrial structures, tunnels and arches. µØ—  ʽ — implemented in accordance with good practice and   ʽ —¶—Alain Ghenassia.

«FOREVA® solutions incorporate structural design methods, the manufacture of tested, approved products    —¶ Ó  Huynh. «This means that we can support our customers at every stage of their project, from assistance with diagnosis and choosing the right solution to performing  –¶This label of excellence is applied to repair solutions and products that are tested, approved and applied under real conditions by production workers, technicians and sales representatives. The success of FOREVA® solutions lies in feedback from employees. With a technical department that brings together civil and chemical engineers and materials and corrosion specialists, Freyssinet guarantees high quality solutions and products.

Sustainable solutions Freyssinet’s priority with FOREVA® is to provide longlasting solutions. «Our solutions also meet requirements relating to structures’ compliance with standards. These are issues of user safety, which are central to our operations, from initial discussions to delivery of the —¶ says Alain Huynh. Alain Ghenassia adds, µØáä×èÓŔ˃  development policy: improving, preserving and securing structures means that we can conserve non-renewable      –¶ Øáä×èÓŔ ʽ  ʽ — proving that comprehensive solutions (design, production and on-site application) are exactly what customers want and need.

ÓÞÓÛàÙÚ×àÓååÛÓÓàÖÓÞÓÛàÚçëàÚ

ßØáä×èÓŔ – You can order FOREVA® brochures at www.freyssinet.com/reparation Solutions

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More about FOREVA® solutions

Solutions

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Freyssinet offre, avec FOREVA, la garantie d’une intervention de qualité et d’une réparation pérenne dans le cadre d’une prestation clé en main.

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© 2012 Soletanche Freyssinet - Les textes, photos et autres informations Toute reproduction, contenus dans le présent représentation ou autre catalogue sont la propriété usage sans le consentement Soletanche Freyssinet du Groupe Soletanche préalable de Soletanche encourage l’utilisation Freyssinet. Freyssinet est illicite. des pâtes à papier issues - Foreva® est une marque de la gestion durable R I 0 - Imprimé en France des forêts. Le papier déposée par Soletanche de ce catalogue a été Freyssinet. certifié selon les règles très strictes du programme





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Structure Magazine — 2nd semester 2013 — no. 228





Édition : 03/2012 -

de reconnaissance

des certifications forestières

PEFC (Program for the

Endorsement of Forest

Certification).

A m

AROUND WORLD

THE

Malaysia

A SECOND BRIDGE BETWEEN PENANG AND THE MAINLAND á  ß — ťŧŢ  ÝÞ— Freyssinet is carrying out post-tensioning work as part of the construction of the Penang Second Bridge. The major new structure will link the island of Penang to the mainland, stretching a total of 24 km, and is scheduled to open at the end of 2013.

06 07

Structure Magazine — 2nd semester 2013 — no. 228

AROUND WORLD

THE

Australia

MLC CENTRE Ó      å —  ŤŤŢ ţūũŪ™  .   . Freyssinet is in charge of the repairs, which include the installation of innovative cathodic protection that will prevent any future corrosion of the concrete. An additional challenge lies in the need to work on enclosed, soundproofed platforms to minimise disruption to the building’s tenants.

France

HIGH-SPEED FREYSSINET Ø         ÞÙèå×Ó (South Europe Atlantic High-Speed Rail), for which 300 km of new railway line will be built by 2017. The scale of the project means that Freyssinet’s expertise will be called upon in a number of areas, including prestressing, structural accessories (bearings and joints), jacking and heavy lifting.

Structure Magazine — 2nd semester 2013 — no. 228

08

Saudi Arabia

BRIMAN RESERVOIRS: STRATEGIC WATER STORAGE FOR THE REGION Ó  ŤŢţť—Ø        , each 18 metres tall and 120 metres in diameter. The aim of the reservoirs is to provide back-up

09 in the event that water supplies are cut off to the city of Jeddah as a result of a natural disaster or major problems at the desalination plants.

Ť– Structure Magazine — 2nd semester 2013 — no. 228

The major project

HALIÇ BRIDGE The essentials — The project: a bridge across the Golden Horn in Istanbul, carrying a metro line. — The structure is made up of two access viaducts, a main cable-stayed bridge and a swing bridge. Freyssinet produced and installed the stay cables, the prestressing and bearings for the bridge and lifted the metal segments. — Duration: work started in 2009 and was completed in mid-2013.

ISTANBUL—TURKEY In Istanbul, the Haliç Bridge, the fourth across the Golden Horn, has just been completed. The structure is made up of two access viaducts, a cable-stayed bridge and a swing bridge. Freyssinet produced and installed the stay cables, prestressing and bearings and lifted the segments. The bridge, which is built on a historical site, enables the extension of a metro line in a city plagued ʾ – There were previously three bridges across the Bosphorus, the Golden Horn Bridge, the Atatürk Bridge and the Galata Bridge. They were joined by the Haliç Metro Bridge in mid-2013. The new link combines a cable-stayed bridge with a metro station. At 919 metres long, the bridge connects two metro tunnels located on either side of the estuary and will enable the extension of the M2 metro line beyond the Yenikapi terminus to Taksim Square, thus increasing the transport capacity from 200,000 to around 750,000 passengers per day.

Several types of structure The bridge consists of three main parts, the largest being the 387 metre long cable-stayed section over the Golden Horn. It has a 180-metre central span and two 90-metre side spans. The structure is unusual in that there is a metro station on the main span. A 120 metre long swing     ʾ Structure Magazine — 2nd semester 2013 — no. 228

move up and down the Bosphorus. æ   ˃ viaducts at either end, connecting them to the tunnels. The cable-stayed structure comprises two steel towers 65 metres in height, with the platform and roof of the metro station sitting between them on the main span of the bridge.

A project in keeping with the surrounding historical heritage Because the Haliç Bridge is built on a çà×åÕá ʽ   site, particular care was taken during the work to preserve the archaeological remains in the area. The main challenges were protecting the archaeological remains during the digging of the foundations, and preserving the view of the Süleymaniye Mosque. The pier foundations were therefore dug by hand, and the planned height of the towers was reduced from 82 metres to 65 metres to limit the visual impact of the structure.

919

metres

Total length of the structure. Cable-stayed bridge: 387 metres; swing bridge: 122 metres; access viaducts: 169 and 241 metres.

The bridge, which carries the extension of the M2 metro line, will help improve Istanbul’s public transport system.

The partners — Contracting authority: Istanbul Metropolitan Municipality — Architect: Hakan Kiran — General contractor: AstaldiGulermak JV — Main subcontractors: Freysaş-Freyssinet Wiecon (construction surveys) Waagner Biro (swing bridge mechanism)

ROMANIA BULGARIA

KURTULUS

RUSSIA

Istanbul

University

ISTANBUL TURKEY

GREECE

IRAN

SYRIA CYPRUS

IRAQ

BALAT

ISTANBUL

CUKURKUMA Nusretiye Mosque

Galata Tower KARAKÖY

Bosphorus

ATATÜRK

Haliç Bridge

HASEKI AKSARAY

YENIKAPI

Sea of Marmara

Palace of Dolmabahçe

TEPEBASI GALATASARAY

Atatürk Bridge

Fatih Sultan Mehmet Bridge

Bosphorus Bridge

Golden Horn

BEYOGLU Taksim Square

Galata Bridge Grand Bazaar Topkapi Palace SULTANAHMET Saint Sophia Blue Mosque

Sea of Marmara

2 km

500 m

10 11 ßÓäæÛà—PROJECT MANAGER

”Enhancing the site and using modern construction techniques are key to the success of the project. We use ultra-compact stay cables for a streamlined structure, and prefabrication     ʾ  –¯

More about the Haliç Bridge.

Structure Magazine — 2nd semester 2013 — no. 228

The Achievements

Construction Repairs Canada

HEBRON GBS

Ø            Ú  ʺ  , Freyssinet has signed another significant contract in Newfoundland. Freyssinet has won the contract to supply and install the prestressing for the Hebron GBS (Gravity Based Structure) on behalf of oil company Exxon. This imposing concrete structure, designed to store barrels of crude oil, will be placed in the Atlantic Ocean at a depth of 90 metres, 350 km off the Canadian coast. The structure is made up of 130,000 m3 of concrete and will be reinforced with around 3,000 tonnes of prestressing to ensure that it is watertight and iceberg resistant.

The essentials Ú×ÔäáàÙÔå — The project: A 130 m-diameter gravity base with seven storage compartments, surrounded by seven ice walls to protect against icebergs. — General contractor: Kiewit-Kværner Contractors — Implementation: Supply and installation of 3,000 tonnes of offshore prestressing, with ducts laid during the slipforming of the structure. The operations take place in the dry dock and then offshore when the platform is floated. — Duration: The entire project is scheduled for completion by the end of 2015.

Structure Magazine — 2nd semester 2013 — no. 228

Saudi Arabia

DAMMAM BRIDGE

Ø            Ö— on the east coast of Saudi Arabia. The structure will be comprised of 48 spans of varying lengths (between 16.4 and 55 metres), 714 segments and 1,000 tonnes of external prestressing. During the installation phase, the team will be using a launching gantry specially developed by the Freyssinet technical department. «The existing launcher has been completely adapted to suit the characteristics of the project. This piece of equipment completes our range of installation tools and will be a major asset for future projects» says Vincent Butty, Project Manager.

The essentials ÖÓßßÓßÔäÛÖÙ× — The project: a precast segmental bridge intended to make traffic run more smoothly on the roads between the city and port of Dammam. — Implementation: Freyssinet is providing technical support for the setting up of the precasting area, supplying four segment precasting units, performing geometric inspections, supervising the installation of the deck and supplying and installing the prestressing.

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Structure Magazine — 2nd semester 2013 — no. 228

The Achievements

United States

BOY SCOUT BRIDGE

ÛßÚ—éè   — Freyssinet (Freyssinet Inc. and Freyssinet Major Projects) worked as the general contractor on the construction of a suspended footbridge - the «CONSOL Energy Wing Tip Bridge». Also nicknamed the «Boy Scout Bridge», this footbridge spans a nature reserve within the New River Gorge national park, which played host in July 2013 to the National Scout Jamboree (held by the Boy Scouts of America and featuring 50,000 people).

The essentials ÔáëåÕáçæÔäÛÖÙ× — The project: a suspended footbridge approximately 30 metres above the ground. — Objective: to reduce the time required to cross the valley from 45 minutes to 2 minutes. — Implementation: the carrier tendons were fitted using a travelling carriage system along a temporary cable made of strands, allowing the locked-coil cables to be supported and moved above the valley. A cableway was used to fit the segments. — Duration: Work commenced in March 2012 and was completed in mid-2013.

Structure Magazine — 2nd semester 2013 — no. 228

Singapore

OLD TOH TUCK ROAD WAREHOUSES

Ø      ʽ     – Designed to be split into several goods warehouses, the building had to be able to take heavy loads while retaining plenty of clear space for moving around. Prestressing by post-tensioning was identified as the optimum solution for the project. The Freyssinet team was involved very early on in the design of the building, and then supplied and installed the prestressing.

The essentials áÞÖæáÚæçÕÝäáÓÖ éÓä×Úáçå×å — The project: construction of a warehouse in the west of Singapore; each storey had to be able to take very heavy loads and allow for the movement of delivery vehicles. — Implementation: 26,700 m2 of prestressed floors and over 300 tonnes of prestressing strands were installed. — Duration: work started in August 2012 and was completed in February 2013. .

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Structure Magazine — 2nd semester 2013 — no. 228

The Achievements

Construction Repairs

Romania

BUCHAREST CITY HALL

Ø       Ô Õ Ú, which was built over 100 years ago. Isolating the structure from its foundations is often the best solution for protecting historical buildings in high earthquake risk areas like Romania. The isolation devices were successfully tested at the University of San Diego and comply with new European Standard EN 15129 on anti-seismic devices.

The essentials ÔçÕÚÓä×åæÕÛæëÚÓÞÞ — The project: protecting a very old building against earthquake risk. — Implementation: Freyssinet has installed a total of 262 isolators. Each device is over 1 m in diameter and 58 cm tall, and weighs more than 2 tonnes. The team is also carrying out the loading and load transfer using flat jacks. — Duration: the project is scheduled for completion at the end of 2013, after two years of work.

Structure Magazine — 2nd semester 2013 — no. 228

Australia

ANZAC BRIDGE

æ Ó   å— commissioned in 1995, holds the country’s record for the longest cable-stayed bridge, with a span of 345 m. Freyssinet won the contract to solve the bridge’s structural problems, namely abnormal stay cable vibration due to wind and rain, the risk of profound damage linked to the increas e in the number of lanes on the structure over the years, and fire protection of the retaining cables.

The essentials ÓàìÓÕÔäÛÖÙ×

More about Freyssinet’s work on the Anzac Bridge.

— The project: repairing and strengthening the structure, which had shown failings since it was opened to traffic, and solving a complex vibration phenomenon. — Implementation: the Freyssinet teams used innovative solutions to reinforce the HDPE sheaths, install special dampers, protect the most critical cables against fire and install improved stay cable anchor protection. — Duration: approximately three years; throughout the work, the bridge’s eight lanes remained open to traffic.

Structure Magazine — 2nd semester 2013 — no. 228

16 17

The Achievements

United Kingdom

HAMMERSMITH BRIDGE

Ó  ˃ Þ, this road bridge carries the A4 over the Hammersmith Roundabout. Following the detection of a significant corrosion problem, the bridge was closed to traffic in December 2011 and then partly reopened. After a short design phase, Freyssinet carried out the emergency strengthening work in record time ready for the bridge to be completely reopened before the London 2012 Olympics.

The essentials ÚÓßß×äåßÛæÚÔäÛÖÙ× — The project: repairing one of the oldest reinforced concrete flyovers in existence (completed in 1961) at a strategic London traffic point. — Implementation: additional prestressing by post-tensioning was installed above and below the upper block. — Duration: an intensive schedule was put in place to complete the work in time for the London Olympics. The project started at the end of January 2012 and was finished in May 2012, well before the deadline set. A second phase of work took place in 2013.

More about Hammersmith Bridge.

Structure Magazine — 2nd semester 2013 — no. 228

France

PANNECIERE DAM

ÓťŧŢ      ŪŢ   , the Pannecière Dam is one of a number of basins and reservoirs upstream of the greater Paris region. It provides flood risk protection in a densely populated area. The structure also houses a hydrœlectric plant, and required general strengthening, particularly to bring it into compliance with new earthquake regulations. Freyssinet has carried out several different types of work in conjunction with other VINCI Group companies, using its Foreva® repair solutions.

The essentials âÓàà×ÕÛ×ä×ÖÓß — The project: repairing the structure, which no longer complied with standards and needed to be strengthened in order to meet the new earthquake regulations. — Implementation: Freyssinet stabilised and strengthened the arches, installed braces for earthquake protection, decontaminated the asbestos-containing facings (MTS) and repaired the structure’s concrete using Foreva® solutions. — Duration: the work took 18 months and was completed in early 2013.

More about Panneciere Dam.

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Structure Magazine — 2nd semester 2013 — no. 228

The technology

œæ  Ö        —   ˜ œ        on buildings, œ  elements, œ       of the structure.

œæ   Û           —in which a large percentage of the structural weight is horizontally disconnected from the foundation system. The movements of the ground and the structure are therefore uncoupled. The system works like a mattress and is designed to absorb the seismic vibrations coming from the ground and propagating in the structure, by means of four components: œ     — œ— œ   — œ        is constructed.

œÓ 

æ   is such that the underground level can be used as a car park. Designed to be modular, the Isoslab system comes in the form of a kit made up of standard elements enabling fast, reliable design, supply and assembly. A complete catalogue of standard size Isoslab systems is available, facilitating the design of future projects.

á  to find out more about Isoslab

Structure Magazine — 2nd semester 2013 — no. 228

More about the invention of prestressing.

The year

1928

Prestressing is patented Eugène Freyssinet filed the patent for prestressing, using the term «permanent pre-compression of concrete». The patent is a turning point in the life of the engineer, who decides to devote himself entirely to research into prestressing so that it can become an industrial reality.

Around the world...

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š  ç Ý  

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ÓØ       — by chance in his London laboratory. The antibiotic mould will be crucially important in fighting staphylococcal infections and certain serious infectious diseases (meningitis, pneumonia, etc.). The first penicillin-based therapies will be used several years later, at the start of the Second World War.

ÚÙ éßs  Ù ßs— a measuring instrument used to detect ionising radiation. As nuclear activity develops, it’s a tool that will prove vital for estimating the radiation exposure in a given location and detecting the presence of radioactive sources or significant contamination levels in the environment.

Structure Magazine — 2nd semester 2013 — no. 228

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The Soletanche-Freyssinet Group

The Soletanche Freyssinet Group, the global leader in the soil, structural engineering and nuclear sectors, brings together an unrivalled set of skills in the specialist civil engineering industry. In almost one hundred countries, ţū—ŢŢŢʺ           ʽ  of each project, however large or complex.

19 000 80

5

employees countries companies

UNITED STATES: WOLF CREEK DAM Ô Ý  —  é Õ   Ý—ç åwas at risk and needed strengthening. The TreviicosSoletanche joint venture, acting on behalf of the US Army Corps of Engineers (USACE), carried out the foundation remediation works, which consisted of building a 91,000 m2 barrier wall in the shelter of a 52,000 m2, 1.8-m thick diaphragm wall. Structure Magazine — 2nd semester 2013 — no. 228

Using a combination of secant piles and panels, the barrier wall passes through the diaphragm wall - which extends to a depth of 65 m in the clay section of the dam - to end in 35 m of rock. This major project was hailed as a success by the Deep Foundations Institute and the Association of State Dam Safety Officials, and was delivered nine months ahead of schedule.

PTR TANK BUILDINGS

France: Dunkirk methane terminal

æ    âæä    Ø   was awarded to the Nuvia Travaux Spéciaux/CBN consortium by the CIPN (French Nuclear Engineering Centre) in October 2011 in response to French Nuclear Safety Authority requirements. One of the challenges of the project has been completing the work on Unit 1 before 31/12/2013, failing which the production unit could not continue to operate beyond that date. The structure, which is at the heart of the nuclear island, rests on around twenty micropiles extending to a depth of 25 metres, nestled between several underground tunnels and installed in a tight space on the surface by Soletanche Bachy. The foundations are concentrated in a corner of the building and along one façade, and support shear walls and deep beams (with a 12 metre span). The 20-metre high steel frame rests on the concrete structures and is cantilevered over the nuclear buildings. It is equipped with cladding, anti-projectile shielding and a containment membrane. The work on both units was carried out in conjunction with other Nuvia group entities such as Vraco and Essor.

Ô  ŤŢţŧ— Óâ  Ö          ʽ    ţť   – In early 2012, the Grand Port Maritime de Dunkerque authority awarded a consortium of companies a contract for port development work. Under the contract, Menard is responsible for strengthening the soil beneath the underwater embankments at depths of up to 30 m, using both land and marine treatment equipment. The aim is to stabilise sandy, silty soil, which is susceptible to liquefaction in the event of an earthquake. To consolidate this heterogeneous area, Menard has combined two techniques, using vibroflotation for the sandy materials and ballasted columns for the silty materials.

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REINFORCED EARTH® CELEBRATES ITS FIFTIETH ANNIVERSARY ÛţūŨť—Ú è ʽ  ä  × Ŕ, marking the start of a great adventure in innovation and international expansion. It has been a successful 50 years: variants of the technique are used for numerous applications and there are now Reinforced Earth® walls all over the world. Structure Magazine — 2nd semester 2013 — no. 228

Øä×ëååÛà×æÛàÔäÛÖÙ×Ö×åÛÙàÓàÖ×àÙÛà××äÛàÙßÓÙÓìÛà× Advertisement published in issue no.67 of BRIDGE DESIGN AND ENGINEERING Magazine. — Q2 2012 —