Novel miniature pile construction method

Abstract

The invention relates to a method for constructing a novel mini-pile, which comprises the following steps: step one, using a drilling machine to form drill holes of which the diameter is between 0.25 and 0.4 meter on a groundwork; step two, pouring clear water in the drill holes through a hollow drill pipe of the drilling machine to perform a primary hole cleaning; step three, lifting out the drill pipe and putting reinforcing cages and pouring guide tubes into the drill holes; step four, pouring clear water into the drill holes through the pouring guide tubes to perform a secondary hole cleaning; and step five, pouring prepared fine gravel concrete into the drill holes through the pouring guide tubes until the fine gravel concrete pours out of the drilling holes so as to form the mini-pile of which the diameter is between 0.25 and 0.4 meter. The method adopts a mode of directly pouring the fine gravel concrete to form the mini-pile, thereby saving pile-making materials, facilitating engineering budget and final account and benefiting the popularization and the application of the mini-pile; besides, the method is convenient to control the pile body strength of the mini-pile so as to be advantageous for improving the pile body strength and the bearing capacity of the mini-pile.

Description

technical field [0001] The invention relates to civil engineering technology, in particular to a novel micropile construction method. Background technique [0002] Micropile is a new type of small diameter pile. Due to the small hole diameter of the micro-pile and the large depth that can be reached, the micro-pile can be applied to the construction of various soil layers. The traditional micro-pile construction method mainly adopts the grouting method of throwing stones. The rock casting method mainly includes the following steps: [0003] Step a1, the drilling machine is in place to form a hole; [0004] Step a2, cleaning the hole; [0005] Step a3, put down the reinforcement cage and the grouting pipe; [0006] Step a4, put gravel with a diameter of 1 cm to 3 cm into the drill hole until the gravel is full of the drill hole; [0007] Step a5, inject clean water through the grouting pipe and continue cleaning the hole until the clean water returns from the drilled ho...

AI Technical Summary

Problems solved by technology

For this reason, it is difficult for the investor and the construction party to calculate the amount of materials used for the construction of the micro-pile construction, and it is difficult to budget the construction cost, resulting in a lot of construction costs for the investor and the construction party. Big controversy, which brings great obstacles to the promotion and application of micropile;

[0011] 2. Due to the technology of grouting after stone throwing, the strength of the pile body after the pile is small, which has a great impact on the bearing capacity of the micro pile

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