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对《建筑工人》2000年第3期上刊登的《现浇楼梯支模方法的改进》一文,我有以下两点看法,现提供给原文作者及广大读者参考。1.假定如《该》文所说,上休息平台的最后一步和上楼的第一步踏面均加宽15 mm,那么按楼梯坡度取30°计算.这两处踏步齿的凹角点至板底的法向距离将减小7.5 mm,相应地削弱了板的设计允许承载能力。另外,上休息平台的最后一步处一般是由梁代替的,这样又减小了梁的有效截面宽度,也是不允许的。
The “Construction Worker” published in the third issue of 2000, “cast-in-place staircase method of improvement,” a text, I have the following two points of view, are now available to the original author and readers reference. 1. Assuming that as mentioned in the article, the last step on the rest platform and the first step on the upstairs are both widened by 15 mm, then calculate by 30 ° on the slope of the stairs. The bottom normal distance will be reduced by 7.5 mm, correspondingly weakening the design of the board to allow load carrying capacity. In addition, the last step on the rest platform is generally replaced by a beam, which in turn reduces the effective cross-sectional width of the beam, which is not allowed.