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二、板的构造规定(一)板的截面尺寸1.单向板。矩形平面板的长边l_2与短边l_1的比值大于2(按弹性理论计算)或3(按塑性理论计算)的板是单向板。(1)板的厚度(h)。根据一般设计经验,板厚h应满足:①简支板——h≥l/30。②连续板——h≥l/40。③悬臂板——h≥l/12(式中l是板的计算跨度)。如满足上述要求,可不作板的变形计算。
Second, the board structure requirements (a) the cross-sectional dimensions of the board 1. One-way board. The ratio of the ratio of the long side l_2 and the short side l_1 of the rectangular planar plate to greater than 2 (calculated by elastic theory) or 3 (calculated by plasticity theory) is a one-way plate. (1) Plate thickness (h). According to general design experience, the plate thickness h should meet: 1 simple support plate - h ≥ l/30. 2 continuous plates - h ≥ l/40. 3 Cantilever plate - h ≥ l/12 (where l is the calculated span of the plate). If the above requirements are satisfied, the plate deformation calculation may not be performed.