8th International Conference on Micromechanics of Granular Medi (Powders and Grains) , 2017-07-03

Title : ( An Experimental Investigation on the Generation of a Stable Arch in Granular Materials Using a Developed Trapdoor Apparatus )

Authors: Ali Ahmadi , Ehsan Seyedi Hosseininia ,

Citation: BibTeX | EndNote

Abstract

This paper discusses the formation of stable arches in granular materials by using a series of laboratory tests. To this aim, a developed trapdoor apparatus is designed to find dimensions of arches formed over the door in cohesionless aggregates. This setup has two new important applications. In order to investigate the maximum width of the opening generated exactly on the verge of failure, the door can be open to an arbitrary size. In addition, the box containing granular materials (or base angle) is able to be set on optional angles from zero to 90 degrees with respect to the horizontal. Therefore, it is possible to understand the effect of different levels of gravity accelerations on the formed arches. It is observed that for all tested granular materials, increasing the door size and decreasing the base angle, both cause to increase the width and height of the arch. Moreover, the shape of all arches is governed by a parabola. Furthermore, the maximum door width is approximately five to 8.6 times the particle size, depending on the internal friction angle of materials and the base angle.

Keywords

, Arching, trapdoor test, cohesionless soil, granular material
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@inproceedings{paperid:1062195,
author = {Ahmadi, Ali and Seyedi Hosseininia, Ehsan},
title = {An Experimental Investigation on the Generation of a Stable Arch in Granular Materials Using a Developed Trapdoor Apparatus},
booktitle = {8th International Conference on Micromechanics of Granular Medi (Powders and Grains)},
year = {2017},
location = {مونت پولیه, french},
keywords = {Arching; trapdoor test; cohesionless soil; granular material},
}

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%0 Conference Proceedings
%T An Experimental Investigation on the Generation of a Stable Arch in Granular Materials Using a Developed Trapdoor Apparatus
%A Ahmadi, Ali
%A Seyedi Hosseininia, Ehsan
%J 8th International Conference on Micromechanics of Granular Medi (Powders and Grains)
%D 2017

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