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一、问题的提出当梁的高度与跨度接近时,梁的受力性能与一般梁有较大的差异,此类梁称为深梁。深梁设计是现行设计规范(TJ10—74)所欠缺的内容。为了填补这部分空白,规范深梁专题组曾进行了400余个构件的试验。在此基础上,参考了国内外有关资料,初步拟出下述方案。二、建议方案 1.跨度与高度之比l/h≤2的简支梁和l/h≤2.5的连续梁,应按深梁设计。对承受动力荷载的深梁,还应遵守有关规范的规定。 2.深梁的正截面抗弯强度应按下列公式
First, the proposed problem When the beam height and span are close, the beam performance and general beam have a greater difference, this type of beam is called deep beam. The deep beam design is what the current design specification (TJ 10-74) lacks. In order to fill this gap, the normative Shenliang Group has conducted more than 400 component tests. On this basis, with reference to relevant domestic and foreign data, the following plans were initially drafted. Second, the proposed program 1. Span and height ratio l / h ≤ 2 simple beam and l / h ≤ 2.5 of the continuous beam, should be designed according to deep beams. For deep beams subjected to dynamic loads, the provisions of relevant regulations shall also be observed. 2. The normal section bending strength of deep beams should be according to the following formula