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高耸筒体构筑物的风力计算,历来惯用沿高度分段计算和迭加的方法。这对比较高的构筑物,由于荷载图分段多,计算相当繁琐,而且有一定误差。尤其对变形和附加弯矩的计算,则更为困难。本文根据基本风压是高度的连续函数这一特点,用积分导出计算构筑物任意截面的剪力、弯矩、位移和附加弯矩的通式,并配备相应的系数表,供设计使用,计算甚为简便,并提高了精度。 (一)风荷载函数作用在筒体构筑物任意高度处的风载集度为: q_x=kW_oD_xk_zβ (1)式中 k——风载体型系数; W_o——基本风压,公斤/米~2;
The calculation of wind power for towering tubular structures has traditionally been used to calculate and superimpose along height segments. Because of the large number of load maps, the calculation of this relatively high structure is rather tedious and has certain errors. Especially the calculation of deformation and additional bending moments is even more difficult. Based on the fact that the basic wind pressure is a continuous function of height, this paper uses integral to derive the general formulas for shear force, bending moment, displacement, and additional bending moment of any section of the structure, and has a corresponding coefficient table for design use and calculation. For simplicity and increased accuracy. (a) The wind load function acts on the wind load concentration at any height of the cylinder structure as: q_x=kW_oD_xk_zβ (1) where k is the wind-type factor, and W_o is the basic wind pressure, kg/m~2;