Construction piling method

Abstract

The present invention discloses a building pile foundation engineering and construction method, in particular, it relates to a building pile-forming method of pipe-sinking belled pile. Said method includes the following steps: pressing the sinking pipe with metal pile head to the hard soil layer with designed level; taking out the metal pile head; utilizing belling equipment to enlarge base; borrowing; using camera to record image formation; placing radial steel bars into the base hollow cavity and railing said radial steel bars into hard soil, pouring the prepared concrete into the base hollow cavity to form a concrete base; downwards placing prefabricated reinforced concrete pile body and making said prefabricated reinforced concrete pile body and cast-in-situ concrete base be butt-connected and anchored into one body; drawing out said sinking pipe so as to form the invented building pile.

Description

technical field [0001] The invention relates to a building pile foundation engineering and construction technology, in particular to a building pile forming method of sinking tube expanding bottom piles. Background technique [0002] It is well known that the quality of building foundation works plays a vital role in the influence of building quality, 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, because 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 colla...

AI Technical Summary

Problems solved by technology

[0003] 1. Part of the soil body of the pile is excavated 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 a 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 cannot be used for bottom expansion and pile formation in prefabricated piles and highly complex geological conditions