Press Release
January 2012
PERI customized formwork solutions for bridge structures within the Middle East
Formwork, Scaffolding and Engineering for a variety of structures
Formwork, Scaffolding and Engineering for a variety of structures
23/01/2012 | PERI Solutions for Bridge Structures (52172.2 KB)Set as a zip-File for download, consists of seven press photos and the press release in english language.
Especially in the area of infrastructure projects PERI has proven to be the leading formwork and scaffolding supplier in the Middle East. As formwork and shoring challengesregarding weight-load and static requirements are extremely demanding, a project oriented solution and engineering support is necessary. With PERI’s tailor-made formwork and scaffolding solution, PERI was able to tackle a variety of challenging bridge projects over the past few years within the MENA region. The following infrastructure projects showcase the depth of knowledge and expertise of PERI within the region.
In order to meet all project requirements and customer’s expectations, PERI offers standardised, rentable system components and construction-compliant connecting means, supporting structures to deliver cost-effective formwork for the respective structure. With well-trained design engineers, as well as continuous site supervision along with large stock capacity, PERI is able to support any construction project to ensure timely completion of the project.
Fast to assemble and easy to handle systems accelerate the construction progress
Northern Ring Road, Al Ain, UAE
With PERI situated in the U.A.E. for over 10years, a large variety of bridge projects have been realized. Among those is the Northern Ring Road Project, located in Al Ain, which will connect the city to the Emirate’s transport network by bridges, tunnels, and intersections. The construction includes a new dual carriage way, a three-lane fly over bridge, three underpasses, the building of Wadi Bridges and the upgrading of the existing ring road. The contractor has beenSaif Bin Darwish Company from Um Al-Nar, Abu Dhabi.
The PERI systems fulfil the needs of the construction company for flexibility and high productivity. The formwork solution for the superstructure is realised with GT 24 formwork girders, SRU steel walers and SLS spindles. This construction could be accurately adapted to the structure’s geometry. PD 8 shoring towers support the formwork, they are extremely cost-effective as large units and for high clearances.
Comprehensive bridge formwork and shoring solution
VIP Access Bridge, Dubai, UAE
The new Meydan Race Course is part of Meydan City in Dubai. It is able to hold 60,000 spectators and hosted the Dubai World Cup for the first time in March 2010. PERI formwork was involved in many areas of Meydan City, one of them being the VIP bridge. The contractorDutco Balfour Beatty L.L.C.had 4.5 months to build this 750 m long and 25 m (in some areas 49 m) wide bridge. The bridge is shaped like an arch therefore the box girder height varies between 2.00 m and 4.50 m. The bridge formwork was supported by PD 8 Towers which ranked up to 10 m in the highest areas. The slab decking was done with MULTIFLEX using VT 20 girders.
The challenge in this project was the main bridge (the middle part). Normally the concrete of the centre part of the bridge will be poured last and connect to the piers as they will stabilize the construction. Due to various reasons this couldn’t be done like this in the VIP bridge project. Therefore the middle part had to be concreted without being connected to the piers. Therefore, the complete load was carried by the PD 8 towers and stabilized through push-pull-props. Only by scheduling the project in this unusual way, the contractor could realise the completed project in time.
Inclined piers and impressive superstructure constructed with system formwork
Saadiyat Bridge, Abu Dhabi, United Arab Emirates
One of the largest and most challenging bridge projects in the Middle East has been the landmark and icon of Abu Dhabi City, Saadiyat Bridge. It connects Abu Dhabi City and Saadiyat Island – an island which lies about 500 m off the coast. With a length of 1,455 m long and an impressive width of 60 m, the construction is one of the widest bridges in the world. Eight foreland piers in the west and a total of eleven on Saadiyat itself serve to support the three pre-stressed concrete hollow boxes with spans ranging between 45 m and 135 m.
The main bridge has a span of 200 m and is carried by two V-shaped, 20 m high identical sets of piers per section. The formwork and scaffolding solution for the individual supports, with inclinations of more than 27°, consists of two sets of VARIO GT 24 side formwork, a forward inclined VARIO formwork element with integrated working platforms as well as a reverse-inclined raised formwork unit. Due to the high concreting loads, this was carried on PERI UP shoring.
The bridge piers were constructed alternatively in four climbing steps with concreting cycle heights of 4.70 m as well as by 2.44 m in an outward direction in each case due to the pier inclination. The PERI concept allowed the supporting frame construction to be pulled outwards on the steel girders after striking had been completed as though being guided along rails. For efficient realization of the required supporting and platform levels, three tower modules each with a 2.00 m base and a 4.65 m extension height could be vertically coupled together. Connections were carried out with the time-saving PERI section spindle and the extension units could therefore be accurately adjusted to the required height. Through the extensively dimensioned moving units, it was possible to construct the total of 48 casting segments with only four sets of formwork extremely costeffectively.
The PERI know-how was also in demand for all other construction phases as well – for both abutments, the numerous bridge piers in the foreland area through to the superstructure formwork. For the construction of the pre-stressed concrete hollow boxes, three different building methods were used: the western foreland bridge was realized using the incremental launching method, for the superstructure on Saadiyat Island in the east, falsework served as a flat and even support, while the large spans in the middle bridge section are concreted by means of the balanced cantilever method.
In order to meet all project requirements and customer’s expectations, PERI offers standardised, rentable system components and construction-compliant connecting means, supporting structures to deliver cost-effective formwork for the respective structure. With well-trained design engineers, as well as continuous site supervision along with large stock capacity, PERI is able to support any construction project to ensure timely completion of the project.
Fast to assemble and easy to handle systems accelerate the construction progress
Northern Ring Road, Al Ain, UAE
With PERI situated in the U.A.E. for over 10years, a large variety of bridge projects have been realized. Among those is the Northern Ring Road Project, located in Al Ain, which will connect the city to the Emirate’s transport network by bridges, tunnels, and intersections. The construction includes a new dual carriage way, a three-lane fly over bridge, three underpasses, the building of Wadi Bridges and the upgrading of the existing ring road. The contractor has beenSaif Bin Darwish Company from Um Al-Nar, Abu Dhabi.
The PERI systems fulfil the needs of the construction company for flexibility and high productivity. The formwork solution for the superstructure is realised with GT 24 formwork girders, SRU steel walers and SLS spindles. This construction could be accurately adapted to the structure’s geometry. PD 8 shoring towers support the formwork, they are extremely cost-effective as large units and for high clearances.
Comprehensive bridge formwork and shoring solution
VIP Access Bridge, Dubai, UAE
The new Meydan Race Course is part of Meydan City in Dubai. It is able to hold 60,000 spectators and hosted the Dubai World Cup for the first time in March 2010. PERI formwork was involved in many areas of Meydan City, one of them being the VIP bridge. The contractorDutco Balfour Beatty L.L.C.had 4.5 months to build this 750 m long and 25 m (in some areas 49 m) wide bridge. The bridge is shaped like an arch therefore the box girder height varies between 2.00 m and 4.50 m. The bridge formwork was supported by PD 8 Towers which ranked up to 10 m in the highest areas. The slab decking was done with MULTIFLEX using VT 20 girders.
The challenge in this project was the main bridge (the middle part). Normally the concrete of the centre part of the bridge will be poured last and connect to the piers as they will stabilize the construction. Due to various reasons this couldn’t be done like this in the VIP bridge project. Therefore the middle part had to be concreted without being connected to the piers. Therefore, the complete load was carried by the PD 8 towers and stabilized through push-pull-props. Only by scheduling the project in this unusual way, the contractor could realise the completed project in time.
Inclined piers and impressive superstructure constructed with system formwork
Saadiyat Bridge, Abu Dhabi, United Arab Emirates
One of the largest and most challenging bridge projects in the Middle East has been the landmark and icon of Abu Dhabi City, Saadiyat Bridge. It connects Abu Dhabi City and Saadiyat Island – an island which lies about 500 m off the coast. With a length of 1,455 m long and an impressive width of 60 m, the construction is one of the widest bridges in the world. Eight foreland piers in the west and a total of eleven on Saadiyat itself serve to support the three pre-stressed concrete hollow boxes with spans ranging between 45 m and 135 m.
The main bridge has a span of 200 m and is carried by two V-shaped, 20 m high identical sets of piers per section. The formwork and scaffolding solution for the individual supports, with inclinations of more than 27°, consists of two sets of VARIO GT 24 side formwork, a forward inclined VARIO formwork element with integrated working platforms as well as a reverse-inclined raised formwork unit. Due to the high concreting loads, this was carried on PERI UP shoring.
The bridge piers were constructed alternatively in four climbing steps with concreting cycle heights of 4.70 m as well as by 2.44 m in an outward direction in each case due to the pier inclination. The PERI concept allowed the supporting frame construction to be pulled outwards on the steel girders after striking had been completed as though being guided along rails. For efficient realization of the required supporting and platform levels, three tower modules each with a 2.00 m base and a 4.65 m extension height could be vertically coupled together. Connections were carried out with the time-saving PERI section spindle and the extension units could therefore be accurately adjusted to the required height. Through the extensively dimensioned moving units, it was possible to construct the total of 48 casting segments with only four sets of formwork extremely costeffectively.
The PERI know-how was also in demand for all other construction phases as well – for both abutments, the numerous bridge piers in the foreland area through to the superstructure formwork. For the construction of the pre-stressed concrete hollow boxes, three different building methods were used: the western foreland bridge was realized using the incremental launching method, for the superstructure on Saadiyat Island in the east, falsework served as a flat and even support, while the large spans in the middle bridge section are concreted by means of the balanced cantilever method.
