Technical discussion: What is the difference between double-column connected-beam type pipe galleries and longitudinal-beam type pipe galleries?
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The last edit to this post was made by hesonchang214 on 2015-10-14 at 10:48. In the specifications for chemical plant equipment layout, information on pipeline gallery design is mentioned, but there doesn’t seem to be any obvious difference between those two types of pipeline galleries. No relevant materials can be found online either. Does anyone have photos of these pipeline galleries? My skills in 3D modeling are poor, so it’s difficult for me to understand the plan views
This post was last edited by ylb913 on 2015-10-13 at 10:33. In fact, HG/T 20546.5-2009 explains things quite clearly. The double-column connecting beam may not have longitudinal beams; if necessary, a \"longitudinal connecting beam\" will be added at \"half the height of the floor.\" The crossbeams for each floor are connected to the columns on the left and right, and the number of such crossbeams is equal to the number of columns (two beams per pair, with one pair counted as one unit). Between the longitudinal truss frames, there must be \"longitudinal beams\"; some of the crossbeams are fixed or supported by the left and right longitudinal beams. The spacing between the crossbeams is independent of the spacing between the columns, and in most cases, the number of crossbeams is greater than the number of paired columns.
Is there a diagram for this? Isn’t the vertical connecting beam simply a longitudinal beam? Since there’s no diagram, I can’t tell what the exact difference is
A longitudinal tie beam has longitudinal members only when pipes extend from its sides; otherwise, it has none. Moreover, the position of its longitudinal members is at half the height above and below the cross beams. A longitudinal tube support structure must have longitudinal beams, and these beams are used to support the cross beams; they are generally located at the height of the floor level, with the cross beams being placed on top of these longitudinal beams. Take a look at this; the pipe racks across the road and at the entrance to the workshops are generally like this.
Adding a longitudinal beam at the midpoint is intended to reduce the slenderness ratio of the column.