دانلود رایگان مقاله انگلیسی مقررات جدید برای طراحی لرزه ای ساختمان های چوبی در اروپا - الزویر 2018

ABSTRACT

This paper presents the results of the ongoing work on the revision of the provisions for the seismic design of timber buildings in Europe included within Chapter 8 of Eurocode 8. The most recent research results and technical developments regarding both wood-based materials and structural systems have been implemented into the proposed new version together with the application of the capacity design to each structural system. The main objectives are to update the few and incomplete provisions included in the current version to the current state-of-the-art and to correct some misleading rules. This manuscript represents the authors’ point of view on the basis of a scientific research background and the design common practice regarding different key aspects in the seismic design of timber structures.

5. Conclusions

The ongoing work on the revision of the Chapter 8 for the seismic design of timber buildings of Eurocode 8 was presented. The new proposal, which is markedly different from the previous and current short, concise and outdated version, is based on the following main modifications: (i) changes in the general definitions and design concepts, (ii) update of the list of wood based and other materials and properties of dissipative and non-dissipative zones, (iii) update of the list of structural types with consideration of new structural widely used types not included in the current version, (iv) modification of the description of the existing structural types with the aid of graphical descriptions, (v) modification of the values of the behaviour factors for the different Ductility Classes, (vi) introduction of capacity design rules for each structural type and of the over-strength factors to be used in the design of the brittle components, (vii) modification of the current equations for the safety verifications and (viii) some new provisions for the application of the non-linear static (pushover) analysis.

More research is of course needed about the applicability of the new provisions on multi-storey buildings also considering other structural systems and especially for medium to high-rise buildings in medium to high seismicity areas, where the common commercially available connection devices seem inapplicable and the seismic design requires a different philosophy or different types of connection devices.