Fast pile connecting method for prestressed concrete precast piles and lock-type connector pile

Abstract

The invention relates to a fast pile connecting method for prestressed concrete precast piles and a lock-type connector pile in order to solve the problems that in the prior art, fast butt connection can not be conveniently performed. According to the method, upper-segment piles are in butt connection with lower-segment piles or upper-segment piles are in butt connection with lower-segment piles and the lower-segment piles are in butt connection with lower-segment piles again. According to the upper-segment piled and the lower-segment piled, the two ends of a plurality of steel bars which are fixedly connected with stirrups and annularly distributed at intervals are respectively connected with an inner sleeved-connection mechanism in a sleeved mode through a steel bar upset head to form the upper-segment prestressed concrete precast piles, and the two ends of a plurality of steel bars which are fixedly connected with stirrups and annularly distributed at interval are respectively connected with an inner sleeved-connection mechanism or an outer sleeved-connection mechanism in a sleeved mode through a steel bar upset head to form the lower-segment prestressed concrete precast piles. The butt connection is performed by installing the front end of the inner sleeved-connection mechanism and the front end of the outer sleeved-connection mechanism in a sleeved mode with one on the interior and the other one on the exterior and fixedly connecting the front end of the inner sleeved-connection mechanism and the front end of the outer sleeved-connection mechanism through snap rings and clamping grooves, and in other words, the front end of the inner sleeved-connection mechanism and the front end of the outer sleeved-connection mechanism adhere to each other through epoxy resin glue between the butt-connection end faces of the prestressed concrete precast piles; the cross section of each prestressed concrete precast pile is in the shape of a hollow or solid circle or an ellipse or a polygon or an arc-connected polygon with straight sides and arc-shaped sides in an alternating mode. The fast pile connecting method has the advantages that the butt-connection quality is easy to control, labor intensity is low, the efficiency is high and cost is low.

Description

Technical field [0001] The invention relates to a prestressed precast pile, in particular to a method for quickly connecting a prestressed concrete precast pile and a locking joint pile. Background technique [0002] Prestressed concrete piles are currently the most widely used pile foundation material. It includes pretensioned prestressed concrete pipe piles, pretensioned prestressed concrete hollow square piles, and pretensioned prestressed concrete solid square piles. At present, the above-mentioned pile foundation materials have changed the previous production methods of on-site pouring during the production, and most of the production lines of the factory workshop with guaranteed quality are adopted. [0003] Prestressed concrete pile is a slender member with a large aspect ratio. End plates are often used at both ends of pre-tensioned prestressed concrete piles. The main purposes are: 1. Make all the steel bundles of the whole pile integral and evenly stretched; 2. Strengthe...

AI Technical Summary

Problems solved by technology

However, the defects of these methods are also obvious, mainly including: 1. The quality of construction technology is not easy to control, and the quality of welding is difficult to perform mechanical testing; 2. The construction is difficult, the labor intensity of workers is high, the production efficiency is low, and safety accidents are prone to occur. , Mechanical connection costs are high, corrosion and production tolerances are difficult to control, etc.

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