Construction foundation working method

Abstract

The present invention discloses a construction method of building pile foundation engineering, in particular, it relates to a building 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 said metal pile head, utilizing belling equipment to enlarge base and make the base portion be formed into base hollow cavity; borrowing; placing the radial steel bars into said base hollow cavity and nailing said radial steel bars into the hard soil layer; then pouring the prepared concrete into the base hollow cavity to obtain concrete base, and downwards placing the 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 by means of inserted steel bars of base portion; drawing out sinking pipe and injecting cement slurry so as to obtain the invented belled pile.

Description

technical field

[0001] The invention relates to a construction method of building pile foundation engineering, in particular to a construction method of building foundation. 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 traditional pile foundation engineering cons...