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塔式起重机的塔身是塔机三大结构件之一,工作条件恶劣,荷载情况复杂,结构重量约占整机重量的1/4～1/5。传统的设计方法,一般是根据经验选定塔身的截面尺寸、主弦杆和腹杆的截面面积以及节距等参数,然后进行校核。这样设计的塔身,结构自重偏大,材料的利用率低,成本高,经济效益不好。利用复形法,根据规范GB3811 —83的要求,利用电子计算机对几种不同类型的塔机塔
The tower crane tower is one of the three major structural parts of the tower crane, working conditions are poor, the load situation is complex, and the structural weight accounts for about 1/4 to 1/5 of the weight of the whole crane. The traditional design method is generally based on experience selected cross-sectional dimensions of the tower body, the cross-sectional area of the main chord and webs, and pitch and other parameters, and then check. The tower designed in this way has a large self-respecting structure, low material utilization, high cost, and poor economic efficiency. Using the complex method, according to the requirements of the specification GB3811-83, using an electronic computer for several different types of tower crane towers