39513441-Structural-Design-of-Steel-Bins-and-Silos文档.pdf

The Structural Design of Steel Bins and Silos … August, 01 1 INTRODUCTION 1.1 General The storage of granular solids in bulk represents an important stage in the production of many substances derived in raw material form and requiring subsequent processing for final use. These include materials obtained by mining, such as metal ores and coal; agricultural products, such as wheat, maize and other grains; and materials derived from quarrying or excavation processes, for example sand and stone. All need to be held in storage after their initial derivation, and most need further processing to yield semi- or fully-processed products such as coke, cement, flour, concrete aggregates, lime, phosphates and sugar. During this processing stage further periods of storage are necessary. In the Southern African region, with its vast raw material resources, the storage of bulk solids plays an essential part in many industries, including coal and ore mining, generation of electricity, manufacture of chemicals, agriculture, and food processing. The means of storage of these materials is generally provided by large storage vessels or bins, built in steel or reinforced concrete, located at or above ground level. 1.2 Design The functional planning and structural design of such containers represent specialised skills provided by the engineering profession. Unfortunately there is a lack of comprehensive literature, covering all aspects of bin design, available to the practising engineer. It is the purpose of this publication to present the necessary guidelines to enable the design function to be carried out efficiently and safely, as related to the wide range of typical small, medium and fairly large storage cont