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Tření na rubu konstrukce při aktivním tlaku - Experiment E2
Koudelka, Petr ; Koudelka, T.
The paper presents a part of verification of an existence of supposed phenomena by physical modelling of lateral (earth) pressure. .Initial supposed theoretical base of the General Lateral Pressure Theory in 1996 was built according to numerical knowledge of the time. There was developed an experimental stand with 5 bi-component pressure sensors and made the experiment E2 with active pressure.
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Pokročilejší teoretická koncepce zemního tlaku pro EC7-1 a ČSN 73 0037 - Předběžný návrh
Koudelka, Petr
The last knowledge of a long-term research has led to fundamental objections to the theoretical concept of our basic standards on earth pressure (EC7-1 and ČSN 73 0037) and to the formulation of more advanced General Lateral Pressure Theory (GLPT). The paper analyzes the concepts of the actual standards and their discrepancies with real soil behaviour. Also, it is shown and explained a new more advanced concept according to GLPT.
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Knowledges Brought by Research of Lateral Pressure of Granular Materials
Koudelka, Petr
The contemporary conventional theory of earth pressure and standards are based on the old idea of a single shear soil mass surface defining earth pressure stress along the whole height of the retaining structure and some others assumptions which are not correct. The paper presents both some important knowledge from the research and proofs for a more general theory of earth pressure.
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Dissaccordance of EC7-1 and CSN 73 0037 to Knowledges aboutEarth Pressure
Koudelka, Petr
The paper shows objections against the contemporary conventional theory of earth pressure and standards and designs a non-conventional conception of the lateral pressure on the advanced comprehensive non-linear dependence based. The conception takes into account the singularity of pressure at rest and the shear strength decrease after the peak value.
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Nonlinear Lateral Pressures and Slip Surfaces of Granular Mass
Koudelka, Petr
In 1997 and 1998 an original experimental equiment was designed and developed including bi-component tensors, a large stand and others. The retaining wall of the stand is measured and can be arbitrarily moved. In 1998 and the first half 1999 was made the first medium-term experiment with a mass of very dry flowing sand which has brought some unexpected and new results.
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Lateral Pressures of Granular Mass - Experiment No. 2
Koudelka, Petr
The paper presents information about the measurementsof lateral pressure based on the Czech invention ofbicomponent tensors during the experiment E2 and thefirst presented part of the results and the analysisof the visual monitoring. For more detailed information about the experimental procedure see in Koudelka1999c.
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