拖拉绳吊装受力的精确计算

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摘要:: 拖拉绳在起重吊装中的受力分析,一般采用的计算都较粗略,其最大的不足之处是,把整个系统看成了静定平衡系统,而买际吊装中它是一个静不定系统。另外,计算中没有考虑各拖拉绳的长度、直径与水平面的夹角以及预紧力等对拖拉绳受力的影响。本文是在以往常用的计算分析基础上,考虑了上述诸因素,对拖拉绳在起重吊装中的受力状况作了精确分析,并建立了相应的数学模型,给出了一种精确的计算方法,而且用BASIC 语言编为程序输入 SHARP PC—1501袖珍计算机,对具体实例进行了计算。
The usual 1 y cal cul ati ng of forced guy vvire is more sketchy in the craning and erecting, The deficiency are; taking the whole system as static equilibrium。In the practi cal operati on, i t is a unstat i c equilibrium system. Additionally the influence .of the length and diameter of guy wire the angle between guy wire and horizontal plane and pre-tensile force on the forced guy wire are not considered in calculation Based on usual calculating and analysi ng method considering above factors，this articalmares a accuracy analysis and set up a available mathmatic model to the forced state of guy wire duri ng craning and erecti ng, and gives an accurate calculati ng method. The program was input into the sharp PC-1500 microcomputer with basic language and making practical calcul ation for constructs on.

1987,3(3): 35-41