End-supporting variable-amplitude stirring and pile pressing integrated machine as well as construction method thereof

Abstract

The invention discloses an end-supporting variable-amplitude stirring and pile pressing integrated machine as well as a construction method thereof. The construction method comprises the following steps: step 1, a piling machine is put in place; step 2, the inclination angle is adjusted; step 3, a cement mixing pile is constructed; step 4, a cored pile is mounted; and step 5, the pile pressing operation is performed. The construction method has the beneficial effects that the inclination angle of a cored mixing pile can be accurately controlled by adjusting the inclination angle of a verticalperpendicular axis between a tower frame and a main machine platform, and then the precise construction of the cored mixing pile at the set inclination angle can be achieved. The integrated machine comprises the main machine platform, a rotating support, a rotating shaft, a hydraulic pile pressing mechanism, a mixing and pile drilling mechanism, a moving mechanism, a first telescopic inclined supporting rod and a second telescopic inclined supporting rod. The integrated machine has the beneficial effects that through the telescopic control of the first telescopic inclined supporting rod and the second telescopic inclined supporting rod, both the hole drilling inclination angle of the mixing and pile drilling mechanism and the pile pressing inclination angle of the hydraulic pile pressing mechanism can be adjusted, and then the inclination angle of the cored mixing pile can be controlled; and meanwhile, the relatively high concentricity can be kept.

Description

technical field [0001] The invention relates to the technical field of pile foundation construction equipment, in particular to an end-support luffing-type pile-stirring integrated machine and a construction method thereof. Background technique [0002] The existing cored mixing piles are composed of cement-soil mixing piles (also called cement mixing piles) and concrete core piles. Composite piles formed by pipe piles. The cored mixing pile has the characteristics of high bearing capacity, low settlement, low cost, environmental protection, and wide application range. In today's road and railway pile foundation construction process, the cement concrete cored pile widely used is the cored mixing pile, and the cement concrete cored pile combines the cement soil mixing pile and the cored pile closely together, and the two organically and effectively Combined together, each exerts its own strengths. It not only uses high-strength cored piles to bear the pressure, but also use...

AI Technical Summary

Problems solved by technology

At present, when constructing cored mixing piles, the cement mixing piles are firstly constructed with a mixing pile machine, and then the pre-processed cored piles are pressed into In the cement mixing pile, it is necessary to configure the pile pressing equipment separately, and the investment cost is high, and the construction space required for the simultaneous use of the pile pressing equipment and the mixing pile machine is large, the construction occasion is limited, the construction speed is slow, and the construction efficiency is low, especially for those with For the core-stirred pile with set inclination angle, the set inclination angle cannot be accurately controlled, resulting in a reduction in the bearing capacity of the composite foundation of the pile body and affecting the quality of the project

[0004] In the prior art, the Chinese invention patent with the application number 201810267588.5 discloses an integrated machine for stirring piles and piles. The integrated machine for stirring piles still has the following disadvantages: it is only suitable for the construction of vertical cored stirring piles, but for those with The cored mixing pile with a set inclination angle, the all-in-one machine for stirring and pressing piles cannot adjust the inclination angle and inclination range of the cored mixing pile according to construction needs; high concentricity

Due to the close relationship between the structure of the mixing pile machine and the construction technology, simply improving the structure design or construction technology cannot achieve the construction of controlling the inclination angle of the cored mixing pile.

Images