Projects

City Gate

design:

City Gate Bremen

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Project

Construction of an office and hotel building with commercial use and a shared underground car park

The station forecourt in Bremen receives a makeover. A highly attractive ensemble of buildings will be established consisting of two structures on a common underground basement. The two 7-storey buildings contain a hotel with commercial and office use. The common basement has four levels. In order to provide a high space efficiency, the usage for trade, storage, building technology and the inclined parking levels are all intertwined.

Technical Focus

Structural Engineering, Inner-city Building Pits

Scope of Work

panta engineers provided essential parts of the complex structural design. By using Level 1 Building Information Modelling (BIM), an efficient design could be achieved with intensive value engineering. The large construction site running parallel to the planning could be supplied just in time with formwork and reinforcement drawings.

Old Kattwyk Bridge

review:

Old Kattwyk Bridge Hamburg

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Project

Repair old Kattwyk railway lift bridge

The existing Kattwyk Bridge, which spans over the southern Elbe River in the Port of Hamburg, was at the time of construction in 1973, the world's largest lifting bridge and is still today the largest lifting bridge in Germany. However, it is no longer able to cope with the strong growth in traffic from the combined rail and heavy goods vehicles. Therefore, future rail transport will be routed through the new Kattwyk Bridge, which is currently being built in parallel. For the future use as a pure road bridge, a repair of the old Kattwyk Bridge is being carried out.

Technical Focus

Civil Engineering, Harbor Construction, Restoration and Conversion Planning, Structural Dynamics

Scope of Work

panta engineers performed the peer review of the structural design. The complex load-bearing capacity of the approx. 100m long lifting span was verified by measurements along with independent comparative calculations. The various lifting conditions and dynamic excitations of the structure resulting from machine operation and wind were considered. Of particular interest was the vortex excitation triggered by the wind and the close proximity of the towers from the new Kattwyk Bridge.

Northern Elbe Bridge K6

monitoring:

Northern Elbe Bridge K6 Hamburg

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Project

Northern Elbe Bridge K6

The Northern Elbe Bridge K6 is a cable-stayed bridge with 2 towers and an orthotropic roadway in combination with four main steel girders. It transfers the federal highway A1 over the Elbe. The total length is 411m with a main span of 172m. Built in 1965, the bridge was widened and reinforced in 1985 for the use of 3 lanes without a hard shoulder. Meanwhile, the traffic loads and traffic frequencies have increased considerably, especially from heavy goods traffic. In order to be able to accurately determine the current condition of the structure, in addition to the results of a recalculation, a special inspection was required.

Technical Focus

Civil Engineering, Structural Dynamics, Structural Monitoring

Scope of Work

panta engineers carried out the special inspection of the bridge superstructures at the platform level, technical challenging due to reduced accessibility. Particular attention was paid to the fatigue and structural safety of the critical points.

Rail Viaduct Dammtor Station

monitoring:

Rail Viaduct Dammtor Station Hamburg

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Project

Development of an object-related inspection concept for the rail viaducts

The Hamburg Dammtor station is a long-distance train station of importance category 2, used for the railway and S-Bahn traffic in Hamburg. Built between 1901 and 1903, the station building is considered a very successful and a worthy example of historical engineering for the railway industry. The tracks of the station are located at a height of approx. 6 m above ground level, thus providing ground-level access under the tracks. The primary components of the passenger underpass are three railway-carrying viaducts in masonry arches running in the longitudinal direction of the station.

Technical Focus

Civil Engineering, Structural Dynamics, Structural Monitoring

Scope of Work

panta engineers developed an object-specific inspection concept for the track viaducts, taking into account the Ril 804 and the VDI Guideline 6200, which considers the current structural and operational characteristics of an integrated civil engineering use. Initially, a structural test was carried out with a rolling wheel to assess the stability, traffic safety and operational safety. As a further basis for the inspection concept, complex 3D finite element calculations as well as measurements on the structure were carried out.

New Kattwyk Bridge

review:

New Kattwyk Bridge Hamburg

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Project

New railway lift bridge Kattwyk

In order to be able to guarantee the railway connection of the Port of Hamburg in a future-proof manner, a new railway lifting bridge will be built in parallel to the old Kattwyk Bridge. This runs across the Süderelbe and after completion will be the largest structure of its type in Europe. The total length of this double-tracked structure is 287m, with a lifting span of 133m and end spans of 77m each. The superstructure consists of parallel steel trusses and the towers are designed as steel box girders. The foundation is designed as a compressed air reinforced concrete box, starting from construction pits made of combined sheet piling in the Süderelbe river bed.

Technical Focus

Civil Engineering, Structural Dynamics, Harbor Construction, Soil-Structure Interaction

Scope of Work

panta engineers is carrying out the structural engineering peer review and accompanies the construction and manufacturing process with regular site inspections. The structural design of the complex load-bearing capacity in the various lifting states was examined by means of independent comparative calculations. The dynamic excitations of the structure from machine operation, wind and railroad traffic were all considered. The caissons in the Süderelbe and the necessary construction pits made of combined sheet pile walls represented another challenging engineering task.

Konrad

design:

Konrad Hamburg

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Project

Construction of a high-rise residential building with hotel

A new complex of buildings is being constructed in Hamburg St. Georg between Adenauerallee and Lindenstraße. After many varied usage approaches for the property in the past decades, a residential tower building with 18 stories is now being erected together with an adjoining 7-storey hotel. Together, they form a harmonious conclusion to the Kurt-Schumacher-Allee, one of the main access roads towards the Hamburg city center. The overhang of the residential tower from the 4th floor is striking and requires highly reinforced cantilever walls and columns. The foundation consists of a more than 2 m thick base slab.

Technical Focus

Structural Engineering

Scope of Work

panta engineers completed significant parts of the complex structural design and has also examined the settlements of the residential high-rise building with a 3D structural model. The large construction site, which was already starting parallel to the planning, could be supplied in time with formwork and reinforcement drawings.

Aftetal Bridge

design:

Aftetal Bridge Bad Wünnenberg

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Project

Construction of a valley bridge as a bypass for Bad Wünnenberg

A new bypass for Bad Wünnenberg is planned. The new construction of the federal road B 480 consists of a strongly curved, 7-span bridge construction over the Aftetal. The end spans have a length of 94 m and the 5 internal spans have a length of 119.5 m. The bridge is constructed as a single-cell reinforced concrete composite box and is at its highest point about 70 m above the valley floor. The total length of the bridge is 786 meters.

Technical Focus

Civil Engineering, Structural Dynamics, Soil-Structure Interaction

Scope of Work

As part of the tendering process, panta engineers reproduced the superstructures and substructures of the Aftetal Bridge in their own, holistic model. The aim was to verify the tender documents and to develop optimization options as part of the value engineering.

JET-Petrol Station

review:

JET-Petrol Station Hamburg

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Project

Construction of a gas station with a textile membrane roof

The JET brand should to continue to grow. In Hamburg, a new concept will be tested and further developed for this purpose. Part of the new approach is the curved free-form roof made of durable PVC fabric as a membrane. The roof in translucent yellow should provide a bright and pleasant atmosphere and be recognizable to motorists from a distance. The main structural elements are three steel round tube columns with filigree, radially arranged and projecting steel girders at the head point. These stretch the funnel-shaped membrane roof, which is held at the edge and at the inner ring by cables sustaining the curved, light form.

Technical Focus

Structural Engineering, Freeform Structures, Membranes and Ropes

Scope of Work

panta engineers performed the structural engineering peer review and completed regular site inspections throughout the manufacturing and construction processes. In order to be able to correctly evaluate the complex loading effects of the cables and membranes under all load conditions, independent verification of the plausibility checks and calculations were carried out using several different finite element programs.

Intersection Structure

review:

Intersection Structure Gümmerwald

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Project

Replacement structure at the Gümmerwald intersection for the Deutsche Bahn

The Gümmerwald intersection is located in the district of Hanover near Wunstorf and transfers the 2-track electric railway route 1751 (at km number 2,673) over two tracks of the high-speed line (routes 1700 and 1750). The existing single-span truss superstructure with massive abutments is to be completely replaced by a new structure. The new intersection structure is planned laterally from the existing structure in a pivoted route as a deep-set reinforced concrete frame with subsequent long retaining walls. The joint-free length of the entire structure is about 110 m. In order to minimize the interruption time of the railway lines, prefabricated pre-tensioned elements with in-situ reinforced concrete joints are used.

Technical Focus

Civil Engineering, Structural Dynamics

Scope of Work

panta engineers is carrying out the structural engineering peer review and with regular site inspections throughout the manufacturing and construction processes. The complex bearing effect resulting from the skew of about 25 grad, the use of pre-stressed prefabricated elements and the large length expansion required detailed comparative calculations using a 3D shell model with investigation of the dynamic properties of the structure.

Southern Elbe Bridge

monitoring:

Southern Elbe Bridge Hamburg

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Project

Installation of a dynamic axle load scale

The A1 motorway crosses the Elbe River via the Southern Elbe Bridge. In the direction of Lübeck is a riveted plate girder bridge from 1938. Due to the date of construction, usually lower load assumptions compared to the current standard lead to difficulties in the verification of fatigue. In order to ensure the remaining service life of the bridge as long as possible, a realistic assessment is required. One aspect is the determination of the traffic loads occurring at the bridge location, which may be lower than the current code-based traffic loads. For this purpose, a dynamic axle load scale with a high accuracy was installed in the run-up to the southern Elbe Bridge, with which the traffic load for each lane under running traffic can be determined. The measured data will form the basis for the assessment of the bridge, whose residual service life can now be determined with greater accuracy.

Technical Focus

Civil Engineering, Structural Monitoring

Scope of Work

In addition to the general concept, panta engineers also drafted the tender documents for the installation of the dynamic axle load scale and participated in the awarding of the contract. panta engineers has also developed a dynamic database for the evaluation of the measurement data, which allows fast and convenient initial analyzes with graphical output results even with the large data volumes.

CFK Bus Stop

design:

CFK Bus Stop Stade

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Project

Prototype of a bus stop made of CFRP in the CFK-Valley Stade

The CFK Valley in Stade is a worldwide leading competence network for fiber composite materials, based on its many years of expertise in aircraft construction. In order to transfer the possibilities of the most modern composite technology to the construction industry, application possibilities are searched for and exemplarily implemented. A result of this effort is the prototype of a bus stop, made of carbon fiber reinforced plastic, which shows the possibilities of fiber composites with its shape and choice of materials. The result is an aesthetic freeform structure that meets the highest requirements for design, structural safety and durability.

Technical Focus

Structural Engineering, Freeform Structures, Fiber Composite Structures (e.g. GFRP, CFRP)

Scope of Work

panta engineers accompanied both the initial form finding and the structural design to approval and execution planning, and carried out continuous value engineering in close cooperation with the other planners and contractors.

Villa

design:

Villa Boston USA

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Project

Expansion of a villa around an underground basketball court with wellness area

An existing wooden villa will be extended by an underground basketball court with attached wellness area. Due to the necessary excavation, a corner area of the villa has to be carefully braced and literally floats during construction at a height of 8 m, secured by piles and a steel grid construction. The outer walls of the basketball court are designed as angular support walls, which are coupled at the head with each other via the steel composite beams from the ceiling. The reinforced concrete construction is carried out with watertight concrete.

Technical Focus

Structural Engineering, Restoration and Conversion Planning

Scope of Work

panta engineers carried out intensive value engineering in close cooperation with the client and accompanied the structural design from concept to execution planning.

Burchardkai

design:

Burchardkai Hamburg

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Project

Construction of a mobile flood protection wall

The Port of Hamburg is a success story and should continue to grow. In order to reliably handle the predicted growth in container turnover, Hamburger Hafen- und Logistik GmbH (HHLA) has installed modern and efficient new loading bridges at Burchardkai. The delivery of the bridges, which were placed on the already existing rails, took place from the water side. For this, the creation of a possible temporary opening in the existing flood protection wall was required.

Technical Focus

Civil Engineering, Harbor Construction

Scope of Work

For the temporary opening in the area of berth 6, panta engineers planned a mobile flood protection wall in steel construction with minimal interference with the existing structure and carried out the structural design. In addition, the public licensing procedure was involved. The new mobile flood protection wall can now be removed at any time as required and ensures a sufficient level flood protection. This allows greater flexibility in using the Burchardkai.

Köhlbrand Bridge

monitoring:

Köhlbrand Bridge Hamburg

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Project

Installation of a dynamic axle load scale

The Köhlbrand Bridge has connected the Elbe island of Wilhelmsburg with the A7 motorway on the southern Elbe side since 1974. It spans the Köhlbrand, an arm of the Süderelbe. The bridge is a total of 3,618 m long and consists of the eastern ramp bridge, the current bridge and the western ramp bridge. In order to calculate the remaining service life of this structure as accurately as possible, in particular against the background of heavy-load traffic from the container handling, an exact determination of the effects from the road traffic occurring at the bridge location is required. These loads must be determined with high accuracy and reliability in order to arrive at a safe declaration regarding sustainability and durability of the structure. The existing and discontinued dynamic axle load scale was modernized for the extrapolation of the measurements and thereby enhanced with regard to its functionality.

Technical Focus

Civil Engineering, Structural Monitoring

Scope of Work

panta engineers prepared the tender documents for the installation of the dynamic axle load scale and participated in the awarding of the contract. In addition, panta engineers has developed a dynamic database for the evaluation of the measurement data, which allows fast and convenient initial analyzes with graphical output results even with the large data volumes.

Dammtor Train Station Hall

design:

Dammtor Train Station Hall Hamburg

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Project

Recalculation of the station concourse at Hamburg Dammtor station

The Hamburg Dammtor station is a long-distance train station and is station category 2 for the railway and S-Bahn traffic in Hamburg. Built between 1901 and 1903, the station building is considered a very successful and a worthy example of historical engineering for the railway industry. The 113m long and 20m high station hall consists of a filigree structure of steel trusses typical for its time of construction. The primary supporting elements are the arched, 34-meter-long hall roof trusses in the transverse direction and the apron trusses at the ends.

Technical Focus

Civil Engineering, Structural Engineering

Scope of Work

panta engineers carried out a recalculation of the complete station hall with the aim to prove the stability on the basis of the current building standard. Site-specific appraisals for the applicable snow and wind loads were compiled as input values for the analysis with the assistance of panta engineers. The stability analyzes were carried out using a complex 3D structural model with second-order deformation theory and pre-curvature for all truss members. The current stability of structure could be determined with sufficient certainty.

Quarter Development

design:

Quarter Development Hamburg

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Project

Construction of a city quarter with office and commercial use and a common underground car park

In the immediate vicinity of the Hamburg City Hall and in the best downtown location, a new high-quality city quarter is being built. The site is currently under construction with the former Allianzhaus, a 1970s office tower with over 14 stories on an expansive basement level and three basement floors. This existing building will be completely dismantled and the land will be developed with several new more condense buildings, designed by various architectural firms. All structures are located on a multi-story underground car park with 3 basement levels. Parts of the lower levels are immediately adjacent to the Nikolaifleet.

Technical Focus

Structural Engineering, Inner-city Building Pits, Restoration and Conversion Planning, Soil-Structure Interaction

Scope of Work

panta engineers is active in all areas of structural design. Focal points for this project are the demolition of the existing building, the complex inner city excavation and the challenging building designs. These are based on a shared basement car park that has been optimized with regard to the number of parking spaces, which must be closely coordinated with the planning of the excavation.

Plafonds Congress Centre

design:

Plafonds Congress Centre Hanover

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Project

Acoustic elements as ceilings made of GRP in the Hannover Congress Centrum

The historic and protected Kuppelsaal of the Hannover Congress Centrum (HCC) is used as a classical concert and festival hall. It can accommodate up to 3,600 visitors. Renovation and retrofitting focused on visual and acoustic optimization. An essential part of the acoustic optimization is the new flexible system in the ceiling area, which consists of ten flexibly suspended individual elements made of glass fiber reinforced plastic (GFRP).

Technical Focus

Freeform Structures, Fiber Composite Structures (e.g. GFRP, CFRP), Membranes and Ropes

Scope of Work

panta engineers worked on both the initial design of the ceilings and the orientation of the suspension points as well as the structural design from concept to approval and execution planning. Through the use of GRP, in close cooperation with the architect and the contractor, aesthetic, functional and weight-optimized components could be developed in an impressive way.