SAFETY, GRONINGEN, RESIDENCES, SHOPS, EARTHQUAKES
Merckt is a project in the centre of Groningen city situated on the corner of Grote Markt. The building houses apartments and small restaurants. Because of its specific shape, the earthquake resistant engineering for the building was particularly complex. Through an NLTH-analyse, the behaviour of the structure during an earthquake was investigated, see our paper. Especially the lower levels are sensitive to earthquake loads. To make the building earthquake resistant in its present form, the apartments have been structurally 'separated' from the lower levels. This significantly reduces the forces from the apartments in case of an earthquake and enables the structure to absorb them within the present design.
We have made a short illustration with a comparison of an earthquake analysis of Merckt with and without base isolation.
In the Paddepoel district a residential tower called 'Polaris' is being realised. This tower is going to be around 70 metres high. Regarding the earthquakes (PGA = 0,08), research has been done into the consequences for the main load bearing structures of this high-rise building. The forces are of such size that a sollution with base isolation is the most economical. This sollution has been completely integrated into the design and implementation of this complex. We chose to implement base isolation between the foundation beams and ground floor. The entire main load-bearing construction, including reinforcement and the structural design has been analysed and calculated with the use of an NLTH analysis in Abaqus.
SAFETY, GRONINGEN, RESIDENCES, HIGH-RISE, EARTHQUAKES
The Coopvaert is 100 m tall multifunctional tower in the centre of Rotterdam with horeca, offices and apartments. The entire floor surface is 26.000 m².
During the design phase, the ambities of all parties involved were high, especially regarding the size of the apartments. Developments in the market (diminishing demand for more expensive apartments) prompted simpler floor plans but maintaining the appearance of the building.
Zonneveld ingenieurs b.v. has designed and compared different variants for the structure (steel, concrete, prefab concrete). Optimisation and flexibility in the frame have led to the present design.
NEW, ROTTERDAM, RESIDENCES, HIGH-RISE