EXCEPTIONAL WORKS EXCEPTIONAL WORKS CONSTRUCTED BY ADIF ON THE CONSTRUCTED BY ADIF ON THE

SPANISH HIGH SPEED LINESSPANISH HIGH SPEED LINES

IINTRODUCTIONNTRODUCTION

THE ADMINISTRATOR OF RAILWAYS INFRAESTRUCTURES (ADIF) has the objective

of constructing the high speed network in Spain.

ADIF is a public business body that was created after the Railway Sector Act came into

force on the 1st of January 2005.

The following are noteworthy among the exceptional infrastructure works carried out

by ADIF:• The Ebro Viaduct

• The Vinaixa Viaduct• The Arroyo del Valle Viaduct

• The Montblanc Tunnels• The Guadarrama Tunnels

Huesca

Lleida Barcelona

Tarragona

Zaragoza

Soria

Valladolid

Guadalajara

Segovia

Madrid

TÚNELES DEGUADARRAMA

VIADUCTOARROYO DEL VALLE

TÚNELES DEMONTBLANC

VIADUCTODEL EBRO

VIADUCTO DEVINAIXA

Construction SitesConstruction Sites

MADRID

GUADALAJARA

SEGOVIA

VALLADOLID

MEDITERRANEAN SEA

ZARAGOZA

BA

RC

EL

ON

A

SPAIN

LLEIDA

TARRAGONA

TTHEHE EbroEbro VVIADUCTIADUCT

THE EBRO VIADUCT. CONSTRUCTIVE DESCRIPTION AND PROCESSTHE EBRO VIADUCT. CONSTRUCTIVE DESCRIPTION AND PROCESS

The deck comprises a non-homogeneous

longitudinal section, with the presence of circular weight reductions in the

core.

Original “Vierendel” beam design in

prestressed concrete.

Length: 546 m

Consisting of 13 spans

60 m

60 m

120 m

42 m

60 m

6 x 24 m + 16 m

Direction of thrust

42 m

This process consists of constructing the arch-stones on the

two viaduct abutments and, by means of successive thrusts,

position the already constructed parts in their definitive locations.

TTHEHE VVINAIXAINAIXA VVIADUCTIADUCT

THE VINAIXA VIADUCT. CONSTRUCTIVE DESCRIPTION AND PROCESSTHE VINAIXA VIADUCT. CONSTRUCTIVE DESCRIPTION AND PROCESS

Length: 1.044 m

Consisting of 22 spans

This viaduct is exceptional because of the construction of two arch piers that permit the passage of the existing railway line and a future expansion to a double track.

The deck consists of a caisson section with vertical cores and two 4-metre wide

overhangs.Mixed concrete and steel

structure.

41 m

24 mHollow shaft piles, with rectangular

sections, 0.35 m thick

6.00

BALASTO

523.733

3. 000

9. 500

0.350

1.9 00

0. 350

0.10 0

HORMIGON DE

NIVELACION

2.50

0

2. 500

2 .500

R22.600

2.84

36

.753

12.9

30

7.065 6.3845.701

R55. 000

R 11.0

0 0

3.000

TERRENO

2 .600

2.84

36

.753

13.9

67

1.667

501.196

7.0656.724 5.701

ZAPATA

SUR

1 .0 00

HORMIGON DE

NIVELACION

3.0 00

0.1 00

9.50 0

2. 600 500.16

ZAPATA

NORTE

PK. 306+366.425

ALZADO

TTHEHE AARROYO DEL RROYO DEL VVALLE ALLE VVIADUCT IADUCT

SEGOVIAMADRID

THE ARROYO DEL VALLE VIADUCT. CONSTRUCTIVE DESCRIPTION & PROCESSTHE ARROYO DEL VALLE VIADUCT. CONSTRUCTIVE DESCRIPTION & PROCESS

The following activities are carried out:• Monitoring movement at the pillar head• Monitoring cracking at the pillar base which

acts as a prop.• Folding down of each semi-arch

(approximately 12 hours)• Concreting of arch keystone• Blocking of abutment imposts and

concreting of the semi-arch springing

• Deck execution by means of self-supporting formwork

Length: 1.755 m

Consisting of 27 spans

This viaduct is exceptional because, at the centre, the pillars are in the form of semi-arches, which

are constructed “in situ” and then folded it down.

23 m66 m132 m

TTHE HE MMONTBLANC ONTBLANC TTUNNELSUNNELS

MONTBLANC TUNNELS. CONSTRUCTIVE DESCRIPTION AND PROCESSMONTBLANC TUNNELS. CONSTRUCTIVE DESCRIPTION AND PROCESS

Floor demolishingFloor demolishing

Excavation to circular sectionExcavation to circular section

Excavation sealingExcavation sealing

ShotShot--blastingblasting

ConcretingConcreting

Limestone

ArgilliteMarls

CAMP MAGRÉ TUNNEL

LILLA TUNNEL

Limestone

Argillite

MarlsPUIG CABRER TUNNEL

Verified phenomena of expansivitywith pressures of 3.5 MPa, the

tunnel floor had to be reinforced

In view of the significant deformation, it was decided to construct an inverted

circular vault using self-compacting HA 80 reinforced concrete

The Lilla, Camp Magré y PuigCabrer tunnels with a total length of 3.046 m and an

inside diameter of between12.0 and 14.0 m

TTHE HE GGUADARRAMA UADARRAMA TTUNNELS UNNELS

THE GUADARRAMA TUNNELS, CONSTRUCTIVE DESCRIPTION AND PROCESSTHE GUADARRAMA TUNNELS, CONSTRUCTIVE DESCRIPTION AND PROCESS

These works are a tunnel with a 28.4-kilometre base length, the route of which crosses the mountainous massifs of the Central Systems at the maximum elevation of 1,200 m

with a maximum coverage of 992 m under the Peñalara massif.

250 m

30 m

The design consists of two main tubes for a single track, with 9.51

m of excavation diameter, a 30-metre separation between axes and 24 m2 connection galleries

every 250 m.

The constructive method consisted of “double-shield” very hard rock tunnelling equipment.

The “double-shield” type permits simultaneous excavation with the installation of prefabricated lining, which also provide terrain support and reduces execution time to a

minimum.

The tunnel lining comprises prefabricated reinforced concrete rings, executed on-

site, which the actual machine itself installs as it advances.