Partial prestressed concrete bamboo joint pile

Abstract

The invention relates to a partial prestressed concrete bamboo joint pile; a central through hole penetrating through the whole partial prestressed concrete bamboo joint pile is formed in the longitudinal axis direction; the cross section of the inner periphery of the partial prestressed concrete bamboo joint pile is round; the cross section of the outer periphery of the partial prestressed concrete bamboo joint pile is round-angle triangular, round-angle quadrangular and round-angle hexagonal; the partial prestressed concrete bamboo joint pile comprises main ribs extending along the length direction of the bamboo joint pile and hoop ribs spirally surrounding the main ribs; the main ribs comprise prestressed ribs and non-prestressed ribs; concrete protection layers are arranged inside and outside the hoop ribs; the outsides of the main ribs are connected by the hoop ribs through fixing, roll-welding or binding; the prestressed ribs and the non-prestressed ribs are all positioned at the angles and the edges of triangles, quadrangles and hexagons defined by the hoop ribs; the partial prestressed concrete bamboo joint pile is provided with horizontal bosses; reinforcing ribs are arranged in the horizontal bosses. The triangles, quadrangles and hexagons, defined by the hoop ribs, at the outer peripheries of the prestressed ribs and the non-prestressed ribs are connected by binding or welding.

Description

technical field [0001] The invention belongs to the construction field, and relates to the improvement of the shape and structure of foundation piles in the construction field, in particular to a partially prestressed concrete bamboo pile. Background technique [0002] The authorized announcement number is CN 2611433Y, and the name is "pretensioned prestressed concrete special-shaped pipe pile". The pile type includes a pile body extending along the axial direction. The enlarged bamboo joints protrude, and the pile body between the bamboo joint protrusions is cylindrical. Its disadvantages: because the end of the special-shaped pipe pile is smaller than the diameter between the bamboo joint protrusions, not only the bearing area is small, but also the bearing capacity is large; but because the wall of the special-shaped pipe pile lacks longitudinal ribs, the overall The compression resistance and bending strength of the pipe pile are low, and the shear force is poor, so tha...

AI Technical Summary

Problems solved by technology

Its disadvantages: because the end of the special-shaped pipe pile is smaller than the diameter between the bamboo joint protrusions, not only the bearing area is small, but also the bearing capacity is large; but because the wall of the special-shaped pipe pile lacks longitudinal ribs, the overall The compression resistance and bending strength of the pipe pile are low, and the shear force is poor, so that the pipe pile is easy to cause the pipe pile to break or break in the subsequent construction after the pile is pressed; the third is that although the bamboo joints are raised Partly increases the overall area, but the increase of the area is not enough to make up for the production cost caused by the raised part of the bamboo joint, so that the load-bearing specification of the pipe pile is in the dilemma of not going up or down. If you want to replace the large-diameter Pipe piles have insufficient bearing capacity. If they are not replaced, there will be a situation of overkill and underutilization, and the owner is not willing to use them.

This utility model adopts end protrusions and raised ribs to further increase the bearing capacity of the pile body, but in a sense, it does not overcome the weak links of the overall bending resistance, bending resistance and shear resistance of the pile body. problem, and because the vertical bearing capacity of the pile body is further improved, the pile type can be applied to high-rise or super high-rise buildings. Pullout resistance and horizontal resistance, the longitudinal main reinforcement is only partially strengthened, and has not been strengthened as a whole, so there are weak links

Images