CN207193952U - A kind of variable cross-section concrete tubular pile - Google Patents

Abstract

A kind of variable cross-section concrete tubular pile, including concrete pile body, column steel reinforcement cage is formed in the concrete-pile body, the external diameter of the column steel reinforcement cage is the 2/3 ~ 4/5 of concrete pile body external diameter, and more piece parallel with pile body bus are distributed uniformly and circumferentially on column steel reinforcement cage outer cylinder and run through reinforcing bar, in addition, multiple caged anchor ears are also arranged at intervals with the outer cylinder of the column steel reinforcement cage, the caged anchor ear is welded in inner side on column steel reinforcement cage, concrete pile body is stretched out in outside, and it stretches out section of the part of concrete pile body on ring and is bonded concrete pile body for bottom, hypotenuse right-angled trapezium directed downwardly, simultaneously, the caged anchor ear wraps up entirely through concreting, concrete-pile pile body is on correspondence position formed with the convex annular stage structure that profile is consistent with caged anchor ear.The utility model good integrity, Stability Analysis of Structures, and there is outstanding bearing capacity and intensity.

Description

A kind of variable cross-section concrete tubular pile

Technical field

Engineering construction field is the utility model is related to, specifically a kind of variable cross-section concrete tubular pile.

Background technology

In the existing Industrial and Civil Engineering pile foundation in China, largely using prestressed concrete pipe pile as pile foundation Plinth.This kind of pile for prestressed pipe is using pretensioned prestressing as precast construction stake and fills the works such as levigate material, high efficiency water reducing agent Skill, by concrete through the closely knit shaping of centrifugal dehydration, by the steam curing twice of normal pressure, high pressure, a kind of manufactured elongated hollow is pre- Concrete component processed, there is excellent mechanical performance, be mainly used in pile foundation engineering to improve ground and the bearing capacity on basis, especially It is suitable for applying in the building and infrastructure projects on unstable soil layer or Soft Soil Layer, prestressed concrete pipe pile passes through The load of building is transferred on the stable rock stratum of underground, so as to support building, it is ensured that its safety.

In view of integrated cost, prestressed concrete pipe pile is because bearing capacity of single pile is high, and tube pile construction speed is fast, work efficiency is high The features such as, application is more extensive, especially in the foundation engineering of modern architecture, but traditional prismatic tube pile structure Pre-stressed longitudinal reinforced is elongated arrangement of reinforcement, and is uiform section intensity, in terms of stress, because the distribution of soil pressure is along foundation depth Change, and soil property can also have an impact in different soils, universal law is all compared along component length upper and lower part stress Small, in bearing load, the local pressure among component is maximum and uneven, and is to ensure that each position of pile tube can bear lotus Carry, the section of pile tube must is fulfilled for the requirement at maximum weighted position.Therefore, prismatic tube pile structure economical rationality not to the utmost, and Waste of material be present.

Utility model content

The technical problem that the utility model solves is to provide a kind of variable cross-section concrete tubular pile, to solve above-mentioned background The shortcomings that in technology.

The technical problem that the utility model solves is realized using following technical scheme：

A kind of variable cross-section concrete tubular pile, including concrete pile body, and form column steel in the concrete-pile body Muscle cage, the external diameter of the column steel reinforcement cage are the 2/3 ~ 4/5 of concrete pile body external diameter, and on column steel reinforcement cage outer cylinder circumferentially Direction is evenly distributed with more piece parallel with pile body bus and runs through reinforcing bar, in addition, on the outer cylinder of the column steel reinforcement cage also Multiple caged anchor ears are arranged at intervals with, the caged anchor ear is welded in inner side on column steel reinforcement cage, and concrete pile body is stretched out in outside, And it stretches out section of the part of concrete pile body on ring and is bonded concrete pile body, hypotenuse right angle ladder directed downwardly for bottom Shape, meanwhile, the caged anchor ear wraps up entirely through concreting, concrete-pile pile body on correspondence position formed with profile with The consistent convex annular stage structure of caged anchor ear.

In the utility model, the outer surface of the column steel reinforcement cage is provided with spiral bar and is coiled in through the outer of reinforcing bar Side.

In the utility model, the concrete pile body both ends are closed by end plate.

In the utility model, setting 120 ~ 200mm of height of cage-like anchor ear, external diameter is concrete pile body external diameter 1.2 ~ 1.3 times.

In the utility model, the spacing between adjacent annular convex rank is 800 ~ 1500mm.

In the utility model, on the column steel reinforcement cage outer cylinder it is circumferentially disposed through reinforcing bar radical be 8 ~ 16, and preferably use HRB400 or HRB335.

In the utility model, the concrete pile body is poured using C80 high performance concretes and formed, and in the coagulation Native pile body surface scribbles anticracking grout.

Beneficial effect：The utility model in concrete pile body by setting the convex rank knot that ring section is right-angled trapezium Structure, and using column steel reinforcement cage support concrete pile body, convex rank structure is supported by caged anchor ear, the knot of pile tube has been effectively ensured Structure globality and rigidity, and concrete pile body can be changed into variable section structure by setting convex rank structure so that bottom pile body portion Unnecessary stress around the upward convex rank of split axle is transferred in convex rank structure, then is held by the section of widening of convex rank structure By to adapt to different xial feeds so that its distribution of force is more reasonable, effectively increases stock utilization height.

Brief description of the drawings

Fig. 1 is the single-unit structural representation of the utility model preferred embodiment.

Wherein：1st, concrete pile body；2nd, the outer cage face of steel reinforcement cage；3rd, cage face in steel reinforcement cage；4th, caged anchor ear；5th, through steel Muscle；6th, spiral bar；7th, annular convex rank.

Embodiment

In order that technological means, creation characteristic, reached purpose and effect that the utility model is realized are easy to understand, under Face combines and is specifically illustrating, and the utility model is expanded on further.

Referring to a kind of preferred embodiment of Fig. 1 variable cross-section concrete tubular pile, in the present embodiment, including concrete pile body 1, the concrete pile body 1 is poured for C80 high performance concretes and formed, and has one layer of anticracking grout, the coagulation in its external coating Native pile body 1 is forming multiple annular convex ranks 7 along pile body length direction, and the spacing between adjacent annular convex rank 7 is 1200mm.Section of the annular convex rank 7 on anchor ring is right-angled trapezium, and the right-angled trapezium bottom is bonded concrete pile body 1 And hypotenuse is down.

In the present embodiment, concrete pile body 1 is force structure, forms column steel reinforcement cage in it, the column steel reinforcement cage Visible surface in figure includes cage face 3 in cage face 2 outside steel reinforcement cage and steel reinforcement cage, wherein, the outer surface circle in the outer cage face 2 of steel reinforcement cage The external diameter of a diameter of concrete pile body 1 4/5, and be distributed uniformly and circumferentially outside steel reinforcement cage on cage face 2 and pile body is female The reinforcing bar of 12 parallel model HRB400 of line, which is used as, runs through reinforcing bar 5, and reinforcing bar 5 is provided with spiral bar 6 and is coiled in Through the outside of reinforcing bar 5.Annular convex rank 7 is provided with caged anchor ear 4 as support, these cages in the correspondence position of column steel reinforcement cage In the cage face 2 outer with the steel reinforcement cage of column steel reinforcement cage of shape anchor ear 4 and steel reinforcement cage together with the soldering of cage face 3, its cross sectional shape and chi It is very little to match with annular convex rank 7, it is highly 180mm, and external diameter is 1.2 times of the external diameter of concrete pile body 1.

In addition, in the present embodiment, the both ends of concrete pile body 1 are additionally provided with end plate, and concrete pile body 1 passes through end plate Closed in both sides, and column steel reinforcement cage is integrated at both ends with end plate soldering so that concrete pile body 1 keeps phase with end plate To fixation.

The advantages of general principle of the present utility model, principal character and the utility model has been shown and described above.One's own profession The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification Simply illustrate principle of the present utility model, on the premise of the spirit and scope of the utility model is not departed from, the utility model is also Various changes and modifications are had, these changes and improvements are both fallen within claimed the scope of the utility model.The utility model Claimed scope is by appended claims and its equivalent thereof.

Claims (10)

1. a kind of variable cross-section concrete tubular pile, including concrete pile body, column steel reinforcement cage is formed in the concrete-pile body, its It is characterised by, the external diameter of the column steel reinforcement cage is the 2/3 ~ 4/5 of concrete pile body external diameter, and edge on column steel reinforcement cage outer cylinder Circumferencial direction is evenly distributed with more piece parallel with pile body bus and runs through reinforcing bar, in addition, in the outer cylinder of the column steel reinforcement cage On be also arranged at intervals with multiple caged anchor ears, the caged anchor ear is welded in inner side on column steel reinforcement cage, outside stretch out concrete Pile body, and section of the part of its stretching concrete pile body on ring is directed downwardly for bottom fitting concrete pile body, hypotenuse Right-angled trapezium, meanwhile, the caged anchor ear wraps up entirely through concreting, concrete-pile pile body on correspondence position formed with The profile convex annular stage structure consistent with caged anchor ear.

2. variable cross-section concrete tubular pile according to claim 1, it is characterised in that the outer surface of the column steel reinforcement cage is set Spiral bar is equipped with to be coiled in through the outside of reinforcing bar.

3. variable cross-section concrete tubular pile according to claim 1, it is characterised in that the concrete pile body both ends pass through end Plate is closed.

4. variable cross-section concrete tubular pile according to claim 1, it is characterised in that the setting height of cage-like anchor ear 120~200mm。

5. variable cross-section concrete tubular pile according to claim 1, it is characterised in that the external diameter of cage-like anchor ear is coagulation 1.2 ~ 1.3 times of native pile body external diameter.

6. variable cross-section concrete tubular pile according to claim 1, it is characterised in that the spacing between adjacent annular convex rank For 800 ~ 1500mm.

7. variable cross-section concrete tubular pile according to claim 1, it is characterised in that edge on the column steel reinforcement cage outer cylinder The reinforcing bar radical that runs through of circumferential directions is 8 ~ 16.

8. variable cross-section concrete tubular pile according to claim 1, it is characterised in that through reinforcing bar model HRB400 or HRB335。

9. variable cross-section concrete tubular pile according to claim 1, it is characterised in that the concrete pile body is high using C80 Performance concrete, which pours, to be formed.

10. variable cross-section concrete tubular pile according to claim 1, it is characterised in that the concrete pile body surface scribbles Anticracking grout.