Regarding the selection of the saddle height for SW6
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When calculating the saddle, does the saddle height h refer to the standard height of the saddle or the height of its web? Answer: Since h is used to calculate the average stress s9 of the saddle web, the minimum height at the middle of the saddle web should be entered. I have some doubts regarding this. In addition to calculating the average stress S9, it is also necessary to calculate σsa, which represents the compressive stress on the combined section of the bearing flange and stirrups caused by horizontal seismic forces. If the value of h is chosen as the minimum possible height, this approach is conservative for calculating S9, but it is not conservative for calculating σsa… Therefore, there is uncertainty regarding the choice of height. Which of these two values has a greater impact on the safety and stability of the saddle? Why?
Isn’t the standard height of a saddle the minimum height at the middle of its web?
Hello, I am referring to the book NB/T 47042; these are the issues taken into consideration when performing calculations using SW6~
Hello, in NB/T47042, the height H of the saddle is defined as the distance from the lower surface of the saddle’s base plate to the outer surface of the cylinder. If the minimum height is used, wouldn’t that result in H = thickness of the shimming plate δ4 + thickness of the base plate δ1? And H affects σ9 (i.e., S9 mentioned in the text) and σsa
Saddle height H - Shimming δ4 - Bottom plate δ1? I don’t see it stated like that in the standards
Is the minimum height in the middle of the saddle web the height H referred to?
In the standard definition and examples for horizontal containers, the calculation is based on the standard height of the saddle.