Найти книгу: "Excavations at Nemea IV"

With the issue of these recommendations, which have the character of a standard, the «Building Excavations» working group of the German Geotechnics Association (DGGT) aims to provide assistance with the design and structural calculation of excavation support works. The introduction of the Eurocodes for building control purposes made necessary a revision of the previous edition of the recommendations to comply with the requirements of DIN EN 1997-1:2009 together with the national annex DIN 1997-1/NA:2010-12 and the supplementary regulations of DIN 1054:2010-12. All recommendations were thoroughly checked, revised where necessary and adapted to new knowledge. Chapter 10 «Building excavations in water» was substantially revised. Due to the progress of development of measurement instruments and the more stringent requirements, Chapter 14 «Instrumentation for the monitoring and supervision of building excavation support works» was formulated completely anew. The recommendations of the working group «Building Excavations» should be of assistance, – to simplify the design and structural calculation of excavation support works, – to harmonise loading assumptions and calculation procedures, – to ensure the structural stability of excavation support works and their individual elements and – to improve the cost-effectiveness of excavation support works.

The aim of these recommendations is to harmonize and further develop the methods, according to which excavations are prepared, calculated and carried out. Since 1980, these have been drawn up by the working group «Excavations» at the German Geotechnical Society (Deutsche Gesellschaft fur Geotechnik DGGT) and are similar to a set of standards. They help to simplify analysis of excavation enclosures, to unify load approaches and analysis procedures, to guarantee the stability and serviceability of the excavation structure and its individual components, and to find out an economic design of the excavation structure. For this new edition, all recommendations have been reworked in accordance with EN 1997-1 (Eurocode 7) and DIN 1054-1. In addition, new recommendations on the use of the modulus of subgrade reaction method and the finite element method (FEM), as well as a new chapter on excavations in soft soils, have been added.