BEHAVIOR STUDY OF CONCRETE SILO STRUCTURE BY USING FINITE ELEMENT METHOD

• Main Author: IRAWAN (NIM 25006026), ARI
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/10013
• Institution: Institut Teknologi Bandung

Study at this thesis is conducted because of the number of failures that happened in silo structure because of wrong perception in design process. So the matter is design planning not acceptable to overcome the service loads. In consequence, the design planner needs a theoretical investigation by comparing silo structure design simplification with finite element method (FEM). This investigation study the effect of design geometry between concentric flow method, a flow pattern in which the flow channel has a vertical axis of symmetry coinciding with that of the silo and discharge outlet, and asymmetrical flow method, a flow pattern in which the flow channel is not centrally located. Then it also studies the comparison for loading system according to two international silo regulations existing, that is American Concrete Institute (ACI) 313-1997 and European Standard (EN 1991-4).<p>Prototype models used are a silo system model with one outlet and cylindrical hopper to maintain concentric flow and a silo system model with two outlets and two cylindrical hoppers to maintain asymmetric flow. Later, each of them is applied ACI and EN loading in accordance with its flow pattern behavior. The analysis is obtained by comparing the result of structure model output with hoop tension simplification design method, and other addition analysis is based by initial forces and deformation that happened at each models.<p>Comparison Analysis shows method of hoop tension simplification design only enough to deputize structure behavior of concentric flow only, but insufficient safe if applied to asymmetrical flow model. Internal force analysis also show very significant difference for flexural moment and shear force between each models, and difference of internal force distribution between ACI and EN model result.<p>Finally this study produces main suggestion for process of concrete silo structure design where simplification design process doesn't be applied for all case of silo type. Asymmetrical flow type must be conducted rational design process and intensive checking for each internal force. <br /> <br /> <br />