Multi-point feeder for inserting reinforcement cage after drilling and grouting piles and its application method

Abstract

The invention relates to a cast-in situ bored pile post-inserted steel reinforcement cage multi-point delivery device and a use method and belongs to the technical field of cast-in situ bored pile forming equipment applied to constructional engineering foundation construction. By the use of the cast-in situ bored pile post-inserted steel reinforcement cage multi-point delivery device and the use method, problems of bend deformation and damage and incapability of sinking to a preset depth during steel reinforcement cage sinking upon pre-cast in situ bored pile post-inserted steel reinforced cage construction can be solved. The delivery device comprises a conversion disc, a casting rod, an intermediate-low frequency vibrator, a steel loop and at least one multi-point vibrating device, wherein the multi-point vibrating device comprises an L-shaped reinforcing steel bar and a sleeve; and the delivery device further comprises a pile shoe in a circular frustum-shaped framework structure with a wide upper part and a narrow lower part and formed by a top ring plate, an inclined support and a base ring plate. The use method of the cast-in situ bored pile post-inserted steel reinforcement cage multi-point delivery device comprises the following steps of drilling a hole, casting concrete into the hole, installing the delivery device on the steel reinforced cage, hoisting the steel reinforced cage, vibrating the whole steel reinforced cage by a vibrator to a preset position after the steel reinforced cage sinking due to self-gravity, and extracting the casting rod.

Description

technical field [0001] The invention relates to the technical field of pile forming equipment for bored piles in foundation construction of construction engineering, in particular to a multi-point feeder for inserting steel cages after bored piles and a method of use thereof. Background technique [0002] At present, in the foundation construction of industrial and civil construction projects, long auger holes are drilled, concrete is pumped in the pipe, and steel cages are vibrated into pile holes that have been poured with plain concrete, which is called bored grouting piles. Bored grouting piles have comprehensive technical advantages such as good pile quality, low construction cost, high construction efficiency and green construction process. like figure 1 As shown, the traditional bored grouting pile construction technology utilizes the transfer plate 2 placed on the top of the steel cage 1, and the delivery rod 4 connected with the medium and low frequency vibration d...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a multi-point delivery device for inserting steel cage after drilling and grouting piles and its use method, which is used to solve the problem of sinking of the steel cage during the construction of the steel cage after the preformed hole pressure grouting concrete is piled. Bending deformation damage, even unable to sink to the design depth, thus affecting the quality of the pile

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