Pre-tensioned pre-stressing fender post

Abstract

The invention provides a pre-tensioned pre-stressing fender post, comprising a post end head and a post body. The pre-tensioned pre-stressing fender post is characterized in that the post body is an H-shaped cross section of which the upper flange is wider than the lower flange; and pre-tensioned pre-stressing wires or steel wires are embedded in the upper flange and the lower flange. A main rib entirely uses the pre-tensioned pre-stressing wires or steel wires, so that a step of constructing steel ribs can be basically eliminated. The amount of the steel ribs can be further reduced, and the manufacturing cost is reduced.

Description

technical field [0001] The invention relates to an enclosure pile for deep foundation pit support, in particular to a prefabricated I-shape pretensioning method prestressed enclosure pile. Background technique [0002] At present, bored cast-in-situ piles are basically used for deep foundation pit support piles on soft soil foundations. The bending section is unreasonable, the amount of steel and concrete is large, and the mud generated during the drilling process is difficult to deal with and pollutes the environment. The quality is difficult to control. In addition, the deflection of the pile is large and the width of the crack is large. However, a kind of I-shaped prefabricated pile disclosed in patent ZL200720311879.7 adopts the reinforcement method of combining non-prestressed steel strands with ordinary steel bars, and it is difficult to bind and form the reinforcement cage. The steel bar consumption is also relatively large, and the relatively cumbersome cost of pile ...

AI Technical Summary

Problems solved by technology

[0002] At present, bored cast-in-situ piles are basically used for deep foundation pit support piles on soft soil foundations. The bending section is unreasonable, the amount of steel and concrete is large, and the mud generated during the drilling process is difficult to deal with and pollutes the environment. The quality is difficult to control. In addition, the deflection of the pile is large and the width of the crack is large. However, a kind of I-shaped prefabricated pile disclosed in patent ZL200720311879.7 adopts the reinforcement method of combining non-prestressed steel strands with ordinary steel bars, and it is difficult to bind and form the reinforcement cage. The amount of steel bars is still relatively large, and the construction of pile joints is relatively troublesome and expensive, and the amount of structural steel bars is large. A pre-tensioned I-shaped enclosure pile has not been reported yet.

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