Hyde Systems for Earthquake Protection of Residential Buildings - PowerPoint PPT Presentation

Hyde Systems for Earthquake Protection of Residential Buildings Uwe E. Dorka Stephan Gleim

Introduction • A multitude of small details in columns, corners or connections decide whether a building will survive or not Hyde Systems in Residential Buildings 2 Uwe E. Dorka, Stephan Gleim

Introduction • Quality control is overwhelmed by this requirement. Its like a game of chance, even for the same type of building in the same location Hyde Systems in Residential Buildings 3 Uwe E. Dorka, Stephan Gleim

Introduction • Therefore, we need new structural concepts adapted to earthquakes • Buildings form mechanism during earthquakes • So why not introduce efficient mechanisms up front and control them ? Hyde Systems in Residential Buildings 4 Uwe E. Dorka, Stephan Gleim

Efficient Structural Control systems for earthquake protection Hyde Systems in Residential Buildings 5 Uwe E. Dorka, Stephan Gleim

A closer look at Hyde systems • A typical residential building of the Balkan region Hyde Systems in Residential Buildings 6 Uwe E. Dorka, Stephan Gleim

A closer look at Hyde systems • subjected to a typical Balkan earthquake Hyde Systems in Residential Buildings 7 Uwe E. Dorka, Stephan Gleim

A closer look at Hyde systems • designed as a rigid body mechanism suitable for the application of Hydes Hyde Systems in Residential Buildings 8 Uwe E. Dorka, Stephan Gleim

A closer look at Hyde systems • requires only a simple structural model Hyde Systems in Residential Buildings 9 Uwe E. Dorka, Stephan Gleim

A closer look at Hyde systems • that has been verified with large-scale pseudo-dynamic tests at JRC-Ispra • on a !/2-scale steel frame with shear-panels Hyde Systems in Residential Buildings 10 Uwe E. Dorka, Stephan Gleim

A closer look at Hyde systems • and on a full-scale masonry in-filled rc-frame with friction connections Hyde Systems in Residential Buildings 11 Uwe E. Dorka, Stephan Gleim

A closer look at Hyde systems • This model yields a Hyde system design based on conventional linear limit states in the seismic link Hyde Systems in Residential Buildings 12 Uwe E. Dorka, Stephan Gleim

A closer look at Hyde systems • The comparison with a conventional structure shows: • Reduced stresses and reduced deformations Hyde Systems in Residential Buildings 13 Uwe E. Dorka, Stephan Gleim

Conclusions • Conventional structures cannot be produced with the quality required for earthquake safety of large numbers of buildings due to a multitude of critical details: Too much can and will go wrong • Structural control systems are superior in performance, reliability and price and have become a viable alternative • Base Isolation, Tendon Systems, Pagoda Systems and Hyde Systems use passive or semi-active control and may be used in new structures as well as in structural rehab • The Hyde system is of particular advantage providing a better performance and price for low to medium high residential or mixed residential-commercial buildings • The Hyde system is the most economical concept to retrofit soft storey buildings. Tenant activities are hardly affected. Hyde Systems in Residential Buildings 14 Uwe E. Dorka, Stephan Gleim

Thank You for Your Attention Hyde Systems in Residential Buildings 15 Uwe E. Dorka, Stephan Gleim