Pile foundation construction process

Abstract

The present invention discloses a construction method of building pile foundation engineering, in particular, it relates to a pile foundation construction process of pipe-sinking belled pile. Said construction process includes the following steps: pressing the sinking pipe with metal pile head to the hard soil layer with designed level; taking out metal pile head, and making the base portion be formed into hollow cavity; borrowing, using camera to record image formation; placing the radial steel bars into the base hollow cavity and nailing said radial steel bars into the hard soil layer, pouring concrete from sinking pipe opening so as to form cast-in-situ concrete base; drawing out said sinking pipe and injecting cement slurry so as to obtain the invented pile.

Description

technical field

[0001] The invention relates to a construction method of building pile foundation engineering, in particular to a pile foundation construction technology of sinking tube expanding bottom piles. Background technique

[0002] The quality of building foundation works will directly affect the quality of buildings, so the construction units not only pay attention to the construction quality of above-ground buildings, but also pay more attention to the quality of foundation works. And invest in scientific research to tap the potential of pile foundation engineering, so that it can improve the utilization rate of material strength on the premise of ensuring the quality of the project. 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 traditio...