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  当我们使用塔吊时,塔吊地基的选择是非常重要的,当地基承载力无法满足塔式起重时,如果我们不能对它进行有效的加固,那么可能会产生比较严重的后果。
When we use the tower crane, the selection of tower crane foundation is very important, when the foundation bearing capacity can't meet the tower crane, if we can't it for effective reinforcement, it could have serious consequences.
  塔机最近几年使用情况显示,使用10年以上80tm以下的塔机钢结构出现疲劳裂纹数量较多,并普遍存在严重锈蚀、主材壁厚变薄的情况。同时,发现越来越多的使用了5年左右的塔机钢结构出现疲劳裂纹。有些疲劳裂纹被及时发现,采取了相应补救措施,也有少数没被发现而导致了重大事故。而发生裂纹的部位大多位于塔顶的上、下端部,从而对塔吊地基的加固就很少重视,但其实塔吊地基的加固已是非常重要的。

塔机标准节Usage of tower crane in recent years, according to the use of more than 10 years the tower crane steel structure appear fatigue crack under 80 tm number is more, is common and serious rust, advocate material thickness thinning. At the same time, found that more and more use for 5 years or so of tower crane steel structure fatigue crack appeared. Some fatigue cracks were found in time, to take the corresponding remedial measures, there are a few led to a major accident has not been found. And crack parts are on the top, bottom, thus of tower crane foundation reinforcement is very little attention, but the reinforcement of tower crane foundation is very important.
  一、建议可采取夯实法、换土垫层法、排水固结法、振密挤密法等。不同的方法对土类、施工设备、技术有不同的要求,成本不一。最常用的是换土垫层法,其成本较低,但仅局限于地基软弱层较薄的地区。
A, Suggestions can be taken to consolidate, cushion layer in soil, drainage consolidation method, the vibration compaction method, etc. Different methods of soil type, construction equipment, technology have different requirements, different cost. Is the most commonly used in soil cushion method, its cost is low, but only limited to the foundation weak layer thinner area.
  二、建议在便于安装、拆卸的前提下,借助于已有建筑物的基础、底板等,把塔吊基础与其结合起来。此种方案成本低,比较理想,但因对构筑物增加了载荷,应经计算确定是否对其采取加固处理。
Second, the suggestion on the premise of easy to install and remove, by means of the basis of the existing building, floor, etc., combine crane foundation and its. This scheme of low cost, ideal, but because of structures increased load, should be adopted by the calculation to determine whether the reinforcement.
  本文由塔机标准节友情奉献,更多有关的知识请点击:http://www.sdsansheng.com 们将用最先进的技术,最真诚的态度,为您提供最为全面的服务。更多有关的知识我们将会陆续向大家奉献,敬请期待。
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