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Square and round intermediate anchorage plate [3].

Square and round intermediate anchorage plate [3].

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Pillar jib cranes are often mounted to existing floors with the use of an intermediate anchorage steel plate instead of using independent foundations. The process of designing such an intermediate plate for a pillar jib crane and a destruction pattern for plates of insufficient thickness are presented in this article. The required steps of the desi...

Contexts in source publication

Context 1
... jib cranes find their way to all kind of different production facilities very often after the design and erection process is finished, therefore a way of secure mounting to existing floors has to be provided. The simplest and easiest way for this is the use of a so called intermediate steel anchorage plate (Fig. 1). The basic design as for the used shape is simple, a plate can be either circular or square (sometimes a rectangular shape might be useful). The size of the designed plate can be estimated by the maximum allowed tension force in the anchor bolts. Standards for steel design [1], [2] provide only basic rules for the design of such an ...
Context 2
... in destruction of the intermediate plate and also increase in contact stress that could lead to local destruction of the concrete floor. The optimum thickness for the plate is 30 mm for the presented case, that is where the forces in the anchoring bolts are the lowest. The results in the bolt (first decreasing and then increasing, as shown in Fig. 10) indicate that a state of best (equal) force distribution is achieved by a plate of 30 mm thickness. ...

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