Construction method of multi-stirring hard-breaking anti-cracking pile machine

Abstract

The invention discloses a construction method of a multi-stirring hard-breaking anti-cracking pile machine. Slurry is stirred in a layered mode through a plurality of stirring modes, so that the slurry is more uniform, local harmful cracks do not appear after a pile is formed, and local collapse of a pile hole wall is prevented; a regular rectangular interface can be manufactured, so that the diameter shrinkage phenomenon does not occur in the structure after pile forming; the drilling and pile forming process is monitored in a microcomputer monitoring mode, certain intelligence and convenience are achieved, and construction safety can be guaranteed; a telescopic vibration hard-breaking device is installed on the top of a traditional drill bit, and hard rocks can be rapidly smashed. According to the construction method of the multi-stirring hard-breaking anti-cracking pile machine, the slurry is more uniform, the local harmful cracks do not appear after the pile is formed, and local collapse of the pile hole wall is prevented; and the construction method of the multi-stirring hard-breaking anti-cracking pile machine has certain intelligence and convenience.

Description

technical field [0001] The invention relates to a pile driver in the fields of bridges and constructions, and relates to a construction method of a multi-stirring, firm-breaking and anti-cracking pile driver. Background technique [0002] The SMW construction method diaphragm wall came out in Japan in 1976. The SMW construction method uses a multi-axis drilling mixer to drill to a certain depth on site. At the same time, the cement-based strengthening agent is sprayed at the drill bit to mix and stir repeatedly with the foundation soil. The construction units are overlapped and overlapped. Then insert H-shaped steel or steel plate as its stress reinforcing material before the cement-soil mixture is hardened, and until the cement is hardened, a continuous, complete, seamless underground wall with certain strength and rigidity is formed. There are problems in the pile foundation of existing SMW engineering method construction: (1) at present, the SMW engineering method pile d...

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Problems solved by technology

There are problems in the pile foundation of existing SMW engineering method construction: (1) at present, the SMW engineering method pile driver of building underground cut-off wall all uses several circular mixing drill bits to drill side by side and mix, and then inserts H-shaped steel, so The formed diaphragm wall is a continuous side-by-side cylinder, and there is a serious diameter reduction between the cylinders; (2) When encountering a hard soil layer, the drill bit cannot effectively break through the hard rock, and there is a probability that it will The drill bit slips on the surface of the hard rock mass, and the construction pile driver tilts, which will cause major accidents; (3) the stirring method of the existing SMW pile driver is relatively single, and a good interface cannot be formed during the stirring process. (4) The existing grouting mode is also relatively simple, and it is not uniform during the grouting process, and stones with larger diameters may still appear, which is not conducive to pile formation, and the pile body is easy to Local cracks; (5) In the working process of the existing pile driver, the problems that will arise in the process of judging the drilling process by traditional measurement methods and experience just now are not systematic, and the safety of the drilling process cannot be monitored intuitively

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