Safe stake-forming method

Abstract

The invention discloses a construction process for building pile foundation project, especially a safe pile formation method. It comprises sinking pipe with metal pile head is pressed to hard soil layer with designed lever; the metal pile head is fetched and the soil is blasted by detonator; the soil is fetched; concrete prepared on the ground is poured into the bottom seat cavity to form concrete bottom seat; prepared steel concrete pile body is dropped and it is anchored with cast-in-case concrete bottom seat together by inserted rib at the bottom; the sinking pipe is drawn out and the pile is formed. Compared with prior technology, it is provided with simple and advanced process method, high efficiency. It can improve the loading of single pile effectively and achieves the design demand. It can ensure the quality of pile foundation project. The building cost is decreased and the utilization ratio of material intensity is improved. It makes the pile work under the most economical status. By imaging and inspecting record of camera, the construction quality, which can not be seen and touched, has been seen directly so as to correct the quality problem existed in time. Furthermore, the project quality is ensured to achieve the design demand and construction safety is improved.

Description

technical field [0001] The invention relates to a construction technology of building pile foundation engineering, in particular to a safe pile forming method. Background technique [0002] The quality of building foundation works will directly affect the quality of buildings, so each construction unit not only pays attention to the construction quality of above-ground buildings, but also pays more attention to the quality of foundation works. In order to improve the bearing capacity of single piles, expanded bottom piles and composite foundation piles have appeared one after another. Although this has significantly improved the bearing capacity of single piles compared with traditional foundation piles, due to the fact that the traditional pile foundation engineering construction method is manually Excavate the soil, take the soil and dig the pile body soil, and then dig down a certain depth to prevent the collapse of the immersed pipe. On the hard soil layer, after formin...

AI Technical Summary

Problems solved by technology

[0003] 1. Part of the soil body of the pile is dug out manually, the construction surface is too large, the workload of soil extraction is obviously increased, and the efficiency is low;

[0004] 2. Since there is no immersed tube as support for the bottom expansion equipment, the positioning is not accurate, the expansion angle of the base is too small, and the parameters in the bottom expansion process cannot be guaranteed, so that the quality of the pile is not easy to control, and it is difficult to meet the design requirements, resulting in the single pile The bearing capacity is greatly reduced;

[0005] 3. There are potential safety hazards for construction personnel, and construction personnel are prone to accidents if they do not pay attention;

[0006] 4. The scope of use is narrow, and it cannot be used for bottom expansion and pile formation in prefabricated piles and highly complex geological conditions