- 规格:
- DZ15A
- 规格:
- DZ30A
- 规格:
- DZ60A
弹簧振动锤,弹簧打桩锤全套管施工法优势有哪些优势
全套管施工法又称贝诺特施工法,是由法国贝诺特公司最先采用的边冲抓钻进,边跟进套管护壁的施工方法。中国引进了三菱MT系列的套管钻机,使贝诺特法在中国得到推广应用。贝诺特施工法挖掘速度快,挖掘深度大,可挖至50米左右;
有套管隔离,在靠近已有建筑物处 亦可进行施工;任何土层均可应用;无须处理大量废泥浆,以防止环境污染。其缺点是机械设备庞大,安装场地等要求严。
振动锤施工现场(图)
弹簧振动锤在全套管施工法中可完全替代套管钻机,并且有效率高、环境适应性强、套管直径自由等优点:
一、效率高:
一般套管钻机采用液压搓管的方法将套管旋转、下压或提拔,每一次工作行程较短,总体安置套管的时间长。而利用振动锤打拔钢套管,可一次性将套管下沉至所需位置,除接管需要外不需二次夹桩。且振动式打拔套管速度更快,因而大大提升了工作效率。加快施工进度。
二、环境适应性强:
套管钻机每次夹装套管前需要平整坚实的工作面承托才能正常施工,振动锤施工则更加灵活,夹装套管就位后即可开始施工。减少繁复的前期准备工作,更适合桩基数目较多和地形较复杂的情况使用。
三、套管直径自由:
套管钻机通常只可使用一种规格套管或在较小的范围内变动,而振动锤夹具可自由调节夹桩直径,可使用任意规格的套管。满足各种工程需要。
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