Gynecological clinic university hospital

Tübingen
Gynecological clinic university hospital

structural engineering  Services

Tiemann-Petri Koch  Architect

Extension of the gynecological clinic to the University Hospital Tübingen in a timber hybrid construction

Project

With the planned expansion of the existing women’s clinic, the Mother-Child Center at the University Hospital of Tübingen will be expanded by approximately 7,500 square meters. The five-story new building, which will have a full basement, is being constructed using a forward-looking mixed-construction method. The two ground-level floors will be built as a classic reinforced concrete structure, while a sustainable wood-hybrid construction is planned for the above-ground floors. The well-thought-out building design, with its nearly square floor plan, is ideally suited for the cost-effective use of prefabricated wood construction elements.

5-storey timber hybrid construction in earthquake zone 3

Structural design
The timber hybrid construction of the upper floors consists of a combination of timber skeleton and timber wall construction. The floor plan is divided into a load-bearing grid of 4 x 8 meters, with timber-concrete composite slabs spanning up to 8 meters across the standard floors. The 22 cm thick CLT (cross-laminated timber) slab elements are prefabricated in 2-meter widths with notches and are supplemented with a 12 cm thick in-situ concrete layer after installation. The roof slab is also constructed as a timber-concrete composite slab. In some areas, solid load-bearing cross-laminated timber walls are also used.The skeleton structure is completed with glued laminated timber beams, steel beams integrated into the slab plane, and trapezoidal steel beams with in-situ concrete supplements (DELTABEAM®), designed as continuous beams.

Emission-efficient timber hybrid construction

Sustainability
The emission efficiency of the timber hybrid construction was quantified by comparison with a structurally identical twin building made of reinforced concrete: the use of timber and the application of CO2-reduced concretes meeting CSC Level 2 and Level 3 requirements result in significant greenhouse gas potential savings. To enable long-term use of the building, the option for an additional floor was integrated into the load bearing design. For future reuse of the components, a disassembly concept for the timber-concrete composite slabs was developed, and a material database was created.
Gallery

Project data

Client Vermögen und Bau Baden-Württemberg

Architect Tiemann-Petri Koch

Finalization 2027

Project data Gross floor area 7.284 m²
Usable area 3.240 m²
Gross cubic capacity 29.450 m³
Span 8 m

Services structural engineering