Recommendations on Excavations 2nd Ed




Preface

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In response to a clearly overwhelming requirement, the Deutsche Gesellschaft für Erd- und Grundbau e. V. (German Society for Geotechnical and Foundation

Engineering) called the Working Group for Tunnel Engineering into life in

1965 and transferred the chairmanship to the highly respected and now


sadly

missed Prof. J.

Schmidbauer.

The wide-ranging tasks of the Working



Group

were divided into three sub-groups “General”, “Open Cut Methods” and “Trenchless

Technology”. The “Open Cut Methods” Working Group, under the chairmanship

of the author, at first busied itself only with the urgent questions of analysis,

design and construction of excavation enclosures. The German Society for

Geotechnical and Foundation Engineering published the preliminary results of

the Working Group as the “Recommendations for Calculation of Braced or Anchored

Soldier Pile Walls with Free Earth Support for Excavation Structures, March

1968 Draft”.

During the course of work involving questions concerning analysis, design and construction of excavation enclosures, it was recognised that these matters were so comprehensive that the German Society for Geotechnical and Foundation Engineering decided to remove this area from the “Tunnel Engineering” Working Group and transfer it to a separate Working Group, that of “Excavations”; the personnel involved were almost completely identical with those of the previous “Open Cut Methods” Group. The first publication of the new Working group appeared with the title “Recommendations of the Working Group for Excavations”

in the journal “Die

Bautechnik”

(Construction Technology) in 1970. It

was based on a thorough reworking, restructuring and enhancement of the proposals

published in 1968 and consisted of 24 numbered Recommendations, which

primarily dealt with the basic principles of the analysis of excavation enclosures,

analysis of soldier pile walls, sheet pile and in-situ concrete walls for excavations,

and with the impact of buildings beside excavations.

In the years following this, the Working Group for Excavations published new and reworked Recommendations in two-year periods. As a stage was reached at which no further revisions were envisaged, the Deutsche Gesellschaft für Erd- und Grundbau e. V. decided to summarise the 57 Recommendations strewn throughout the “Die Bautechnik” journal, volumes 1970, 1972, 1974, 1976, 1978 and 1980, and to present them to the profession in one single volume.


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