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塔机轨道基础铺设时,应符合塔机标准及说明书要求的规定。我们在实际工作中,总结出了一套既符合标准要求,又简便易做、行之有效的方法。1.《塔式起重机操作使用规程》(ZBJ80012-89)规定,碎石基础的碎石粒径为20～40mm,含土量不大于20%,以保证对路基排水、透气和摩擦力的要求。《塔式起重机安全规程》(GB5144-94)规定,碎石基础必须整平捣实,轨枕间应填满碎石。此规定不仅适用于塔机基础的建立,而且适用于塔机基础使用的全过程。为防止人为踩踏造成碎石的滑落,出现轨枕间碎石的不饱满及轨枕的松动、凹陷等现象,我们在轨道铺设完毕后,在其四周用砖砌墙,高度与轨枕上表面齐平,墙底部每隔3 m 预留一个100mm×100mm 的洞口排水。
Tower crane laying the foundation, it should meet the tower crane standard and manual requirements. In our practical work, we have summarized a set of methods that are both in line with the requirements of the standard and easy to use and effective. 1. “Tower crane operating procedures” (ZBJ80012-89) provides that the gravel foundation gravel diameter 20 ~ 40mm, soil content is not more than 20%, in order to ensure the subgrade drainage, ventilation and friction requirements . “Tower crane safety regulations” (GB5144-94) provides that the gravel foundation must be tamping, sleeper should be filled with gravel. This requirement applies not only to the foundation of tower crane, but also to the whole process of tower crane foundation. In order to prevent man-made footfall caused by the fall of gravel, there is not enough sleepers between the sleeper and sleeper looseness, depression and other phenomena, we are in orbit after the laying of the brick walls around the height of the sleeper flush with the upper surface, Wall every 3 m reserve a 100mm × 100mm hole drainage.