缆索起重机塔顶偏移量计算与控制

Calculation and control of offset at tower top of cable crane

对于主扣塔一体的缆索起重机,塔顶偏移会对已扣挂拱肋的高程产生影响,必须给予考虑,现有相关论文只给出塔顶偏移对已经安装拱肋高程的影响,但并未提供控制塔偏的具体方案。文中结合四川宜宾横江大桥缆索起重机实例,通过缆风索的数量、直径和安装张力三个参数来控制塔偏。

For cable cranes with the main tower used together with a subordinate tower, offset at the tower top will af- fect the elevation that has already been buckled with arch rib. In this case, offset must be taken into account. Although re- lated papers have studied the influence of offset on elevation installed with arch rib, specific plan for controlling offsetting has not been proposed. To this end, the paper proposes to control offsetting through three parameters： quantity, diameter and installing tension of wind absorbing cable by analyzing the example of cable crane for bridge over Hengjiang River of Yibin, Sichuan.