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Stress redistributions during tunnel and shaft constructions

König, D. / Güttler, U. / Jessberger, H.L.

The three dimensional stress redistribution during tunnel and shaft construction is studied by means of centrifuge model tests. Two types of models are designed. The technique of temporary stabilization of the tunnel face and the shaft excavation by air pressure is applied. The test results show that the stresses by the regular earth pressure are superimposed by additional loads, concentrating on the end of the lining, when deformations in the soil around the excavation cause arching effects. The influence of the unsupported length of the excavation and of the stiffness of the lining on the magnitude of the additional loads is discussed.

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Stress redistributions during tunnel and shaft constructions

König, D. / Güttler, U. / Jessberger, H.L.

The three dimensional stress redistribution during tunnel and shaft construction is studied by means of centrifuge model tests. Two types of models are designed. The technique of temporary stabilization of the tunnel face and the shaft excavation by air pressure is applied. The test results show that the stresses by the regular earth pressure are superimposed by additional loads, concentrating on the end of the lining, when deformations in the soil around the excavation cause arching effects. The influence of the unsupported length of the excavation and of the stiffness of the lining on the magnitude of the additional loads is discussed.

Stress redistributions during tunnel and shaft constructions

König, D. / Güttler, U. / Jessberger, H.L.

The three dimensional stress redistribution during tunnel and shaft construction is studied by means of centrifuge model tests. Two types of models are designed. The technique of temporary stabilization of the tunnel face and the shaft excavation by air pressure is applied. The test results show that the stresses by the regular earth pressure are superimposed by additional loads, concentrating on the end of the lining, when deformations in the soil around the excavation cause arching effects. The influence of the unsupported length of the excavation and of the stiffness of the lining on the magnitude of the additional loads is discussed.

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Title:

Stress redistributions during tunnel and shaft constructions

Additional title:

Spannungsumverteilungen während des Tunnel- und Schachtbaus

Contributors:

König, D. (author) / Güttler, U. (author) / Jessberger, H.L. (author)

Published in:

Centrifuge, International Conference of the ISSMFE, 1991 ; 129-135

Publication date:

1991

Size:

7 Seiten, 9 Bilder, 2 Tabellen, 3 Quellen

Type of media:

Conference paper

Type of material:

Print

Language:

English

Keywords:

Tunnel , Schacht , Untertagebau , Spannungsverteilung , Zentrifuge , Simulationsmodell , Schleudern (Zentrifugieren) , Stabilität , Baustatik , Simulationsversuch , Vortriebstechnik (Bergbau) , Belastungskollektiv

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