Squeeze-spraying reaming press-grouting concrete pile and construction method thereof and drilling machine

Abstract

The invention discloses a squeeze-spraying reaming press-grouting concrete pile and a construction method thereof and a drilling machine. A pile body of the squeeze-spraying reaming press-grouting concrete pile is composed of a pile shaft, an expanding body and a pile end, and the pile body is sequentially provided concrete, a cement soil layer and a compaction soil layer from inside to outside. According to the squeeze-spraying reaming press-grouting concrete pile and the construction method thereof and the drilling machine, the single-pile bearing capacity is improved by 1-3 times, buildingmaterials are saved, waste materials are reduced, the natural environment can be better protected, and the squeeze-spraying reaming press-grouting concrete pile is an environment-friendly pile which is high in bearing capacity and low in compressive deformation. In the construction process, large-torque power output does not need to be adopted, only conventional power output is adopted to carry out construction, replacement of drilling tools is not needed, the torque required by power is small, the energy consumption is low, and the construction is convenient.

Description

technical field [0001] The present invention generally relates to concrete piles, and in particular relates to an on-site pouring concrete pile, a construction method and a drilling rig. Background technique [0002] The construction industry is an industry that consumes a lot of natural resources and energy, and has obvious and prominent negative impacts on the environment. In construction, it produces less waste, reduces energy consumption, uses innovative technologies to improve project quality, and reduces the consumption of building materials. It is an urgent task. [0003] At present, most of the building structure foundation projects at home and abroad use concrete pile foundations, and the soil and mud in the pile holes will be discharged to the ground during the construction of bored piles. In order to reduce construction emissions, a variety of spiral soil-squeezing cast-in-situ piles have appeared in China in recent years, but the outstanding problems of this typ...

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Problems solved by technology

Therefore, the process is very complicated. Construction personnel usually choose different drilling tools according to the hardness of the formation, such as using sand layer drill pipes in sand layers, hard soil layer drill pipes in hard soil layers, etc. In the stratum, two motors above 75kW are often used for high power output to complete the drilling

[0005] Although this construction method completes the drilling, the original stratum skeleton structure is destroyed due to the use of large-torque power transmission and high-hardness drilling tools for forced drilling, and the destroyed rock and soil particles are squeezed together. , but cannot effectively form a new skeleton structure, and, as time goes by, the moisture in the external environment continues to infiltrate, and the rock and soil particles near the concrete pile will re-form the skeleton and sink, which will lead to the loss of the bearing capacity of the concrete pile. decline

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