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At-rest lateral earth pressure coefficient of a granular medium
Conclusions 1. The at-rest pressure in a granular medium depends on the angle of internal friction, history of occurence of the stressed state, and boundary conditions. 2. The at-rest lateral earth pressure coefficient upon an increase of load is always less than unity and upon sufficiently great unloading is greater than unity. 3. The results obtained correspond to cubic specimens. For other geometric forms, for example a cylinder, an analogous method of investigation can be used. 4. The earth pressure on retaining walls depends not only on the type and state of the soil but also on the character of compaction. Heavy compacting mechanisms should cause a greater lateral pressure than light tampers or vibrators. 5. Unloading of the surface of an excavation or local erosion should cause an increase of the at-rest lateral earth pressure coefficient. The at-rest lateral earth pressure coefficient for an unloaded surface of a granular semi-infinite solid is always greater than unity, $ K_{0} $ decreases with distance from it, and approaches asymptotically its own minimum value $ K_{01} $.
At-rest lateral earth pressure coefficient of a granular medium
Conclusions 1. The at-rest pressure in a granular medium depends on the angle of internal friction, history of occurence of the stressed state, and boundary conditions. 2. The at-rest lateral earth pressure coefficient upon an increase of load is always less than unity and upon sufficiently great unloading is greater than unity. 3. The results obtained correspond to cubic specimens. For other geometric forms, for example a cylinder, an analogous method of investigation can be used. 4. The earth pressure on retaining walls depends not only on the type and state of the soil but also on the character of compaction. Heavy compacting mechanisms should cause a greater lateral pressure than light tampers or vibrators. 5. Unloading of the surface of an excavation or local erosion should cause an increase of the at-rest lateral earth pressure coefficient. The at-rest lateral earth pressure coefficient for an unloaded surface of a granular semi-infinite solid is always greater than unity, $ K_{0} $ decreases with distance from it, and approaches asymptotically its own minimum value $ K_{01} $.
At-rest lateral earth pressure coefficient of a granular medium
Pruska, L. (author)
1978
Article (Journal)
English
Local classification TIB:
770/6545/8000
BKL:
56.20
Ingenieurgeologie, Bodenmechanik
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