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近年来,国内相继出现了大起重力矩、大回转半径、可超高工作的各型塔式起重机,来满足日益增多的高层建筑施工的需要。这类塔机在施工中,一旦超过其允许自由高度,就要选择若干锚固点与建筑物拉结,进行附着锚固。塔机附着锚固的可靠设计和正确计算是保证安全吊装作业的一个重要环节。本文以QT80A和法国FO-23B塔机为例,就这一课题作一初步探讨。
In recent years, various types of tower cranes with large lifting torque, large turning radius and high working height have appeared successively in China to meet the increasing needs of high-rise building construction. This type of tower crane in the construction, once it exceeds the allowable free height, it is necessary to select a number of anchorage points and building pull knot, for anchoring. The reliable design and correct calculation of the anchorage of the tower crane is an important link to ensure safe lifting. In this paper, QT80A and France FO-23B tower crane, for example, to make a preliminary discussion of this issue.