CN212026233U - Pile foundation fender pile - Google Patents

Abstract

A pile foundation pile protector comprises a pile protector rod, a concrete base and a reinforcement cage, wherein the reinforcement cage is of a rectangular structure with openings at two ends, the reinforcement cage is vertically embedded in pile protector pits around the concrete base, and the concrete base is arranged in the reinforcement cage; the steel reinforcement cage is formed by binding main reinforcements and stirrups through binding wires, a V-shaped steel reinforcement is further arranged between every two adjacent main reinforcements, one section of the V-shaped steel reinforcement is fixed on the steel reinforcement cage through binding wires, and the other section of the V-shaped steel reinforcement inclines to extend upwards to be in contact with the side wall of the pile protection pit. By adopting the structure, the stability of the pile protector can be improved, the condition that the pile protector is inclined and unstable is avoided, and meanwhile, higher stability can be ensured on the site where mechanical and manual activities are frequent, so that favorable conditions are provided for pile foundation construction.

Description

Pile foundation fender pile

Technical Field

The utility model relates to a pile foundation construction field, specific is a pile foundation fender pile.

Background

In bridge construction, a pile foundation is used as a foundation structure, and the construction quality of the pile foundation is always the key point of engineering attention. In order to ensure that a pile foundation reinforcement cage is centered, four guard piles are adopted to lead a cross line to mark a drilling central point in engineering, four mutually perpendicular reinforcements are bound on the top of the reinforcement cage by using a thread rope to form a cross central point of the reinforcement cage, and the offset error of the reinforcement cage is within a required range by checking the central point of the guard pile cross line and the cross central point of the reinforcement cage. On the construction site, materials such as wood poles, steel bars and the like are often adopted to directly make the guard piles, and the guard piles are stable to a certain depth by being inserted into the soil layer, so that the guard piles have the advantages of simplicity, convenience, high efficiency, economy and practicability. However, the pile protector has certain defects, the bearing capacity of the pile bottom of the part of the pile protector inserted into the soil layer is insufficient, the friction force of the pile body is small, the stability of the part of the pile body of the pile protector exposed out of the soil layer is poor, and the centering precision of the reinforcement cage is affected by the destabilization caused by the disturbance of machinery and workers during construction.

Disclosure of Invention

The utility model aims to solve the technical problem that a pile foundation fender pile is provided, can promote fender pile stability, avoid the fender pile to take place the condition of slope unstability, also can guarantee higher stability at machinery, the comparatively frequent scene of artifical activity simultaneously, provide the advantage for pile foundation construction.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the utility model provides a pile foundation fender pile, is including protecting stake pole and concrete foundation, characterized by: the concrete pile protection device is characterized by further comprising a reinforcement cage, wherein the reinforcement cage is of a rectangular structure with two open ends, the reinforcement cage is vertically embedded in pile protection pits around the concrete base, and the concrete base is arranged in the reinforcement cage;

the steel reinforcement cage form through tying the silk by main muscle and stirrup, still be equipped with "V" shape reinforcing bar between two adjacent main muscle, one of them section of "V" shape reinforcing bar is fixed on the steel reinforcement cage through tying the silk, another section slope upwards extends to and protects a hole lateral wall contact.

In the preferred scheme, a sand layer is backfilled on the bottom surface of the pile protection pit, and the lower end of a main rib of the steel reinforcement cage is inserted into the sand layer.

In the preferred scheme, the bottom of the concrete base is provided with a supporting plate, the lower end of the pile protection rod penetrates through the concrete base and is fixedly connected with the supporting plate, and the bottom surface of the supporting plate is provided with an inverted cone.

In the preferred scheme, the pile protection rod is in threaded connection with the supporting plate, external threads are arranged on the outer wall of the lower end of the pile protection rod, and a matched threaded hole is formed in the central point of the top surface of the supporting plate.

The special mould for the pile foundation pile protection consists of a group of first side plates, a group of second side plates and a bottom plate;

vertical convex strips are arranged on two sides of the first side plate, and vertical grooves matched with the vertical convex strips are arranged on two sides of the inner side surface of the second side plate;

two parallel horizontal grooves are formed in two sides of the top surface of the bottom plate, and horizontal convex strips matched with the horizontal grooves are formed in the bottom of the second side plate;

the middle part of the bottom plate is provided with an opening with the same size as the support plate.

In the preferred scheme, vertical sand grip upper end and first curb plate top surface parallel and level, vertical sand grip lower extreme is higher than first curb plate bottom surface, vertical groove length is the same with vertical sand grip, vertical groove upper end and second curb plate top surface parallel and level, vertical groove lower extreme is higher than second curb plate bottom surface.

In a preferred scheme, the opening is step-shaped, and the step size is the same as the size of the support plate.

The utility model provides a pile foundation fender pile through adopting above-mentioned structure, has following beneficial effect:

(1) the concrete base is arranged at the lower end of the pile protection rod, so that the bearing capacity of the pile bottom of the part inserted into the soil layer and the friction force of the pile body can be improved, and the instability probability of the pile protection rod is reduced;

(2) the arranged reinforcement cage can enhance the connection stability between the concrete foundation and the surrounding soil body, and avoid the condition that the guard pile deviates due to the loosening of the soil body caused by frequent movement of mechanical equipment;

(3) the sand layer backfill of the pile protection pit bottom is carried out before the steel reinforcement cage and the concrete base are installed, so that the pit bottom leveling is facilitated, and the condition that the pile protection is inclined after being installed due to difficulty in leveling under the condition of a special soil layer is avoided;

(4) the precast concrete foundation and the pile protection rod are precast by using a special die, so that the precast concrete foundation and the pile protection rod can be quickly disassembled;

(5) the later stage of device is demolishd the convenience, and steel reinforcement cage, fender pile pole and backup pad all can recycle.

Drawings

The invention will be further explained with reference to the following figures and examples:

fig. 1 is the utility model discloses fender pile hole cut-away schematic diagram behind the installation steel reinforcement cage.

Fig. 2 is the utility model discloses the fender pile hole profile schematic diagram behind installation steel reinforcement cage and the fender pile.

Fig. 3 is the utility model discloses steel reinforcement cage and "V" shape reinforcing bar connection structure sketch map. (three sides with the same structure of the steel reinforcement cage are omitted)

Fig. 4 is a schematic view of the pile protection structure of the present invention.

Fig. 5 is a schematic structural view of the special mold of the present invention.

Fig. 6 is a schematic view of the structure of the first side plate in the special mold of the present invention.

Fig. 7 is a schematic diagram of a second side plate structure in the special mold of the present invention.

Fig. 8 is the schematic diagram of the baseplate structure in the special mold of the present invention.

In the figure: pile protection pit 1, sand bed 2, steel reinforcement cage 3, main muscle 301, stirrup 302, pile protection pole 4, concrete foundation 5, "V" shape reinforcing bar 6, backup pad 7, back taper 701, special mould 8, first curb plate 9, vertical sand grip 901, second curb plate 10, vertical recess 1001, horizontal sand grip 1002, bottom plate 11, horizontal recess 111, opening 112, step 113.

Detailed Description

Example 1:

as shown in fig. 1-3, a pile foundation pile comprises a pile protection rod 4, a concrete base 5 and a reinforcement cage 3, wherein the reinforcement cage 3 is of a rectangular structure with openings at two ends, the reinforcement cage 3 is vertically embedded in a pile protection pit 1 around the concrete base 5, and the concrete base 5 is arranged in the reinforcement cage 3;

reinforcing cage 3 form through the ligature silk by main muscle 301 and stirrup 302, still be equipped with "V" shape reinforcing bar 6 between two adjacent main muscle 301, one of them section of "V" shape reinforcing bar 6 is fixed on reinforcing cage 3 through the ligature silk, another section slope upwards extend to with the contact of pile protection hole 1 lateral wall.

In a preferable scheme, a sand layer 2 is backfilled on the bottom surface of the pile protection pit 1, and the lower end of a main reinforcement 301 of the reinforcement cage 3 is inserted into the sand layer 2.

Preferably, as shown in fig. 4, a support plate 7 is disposed at the bottom of the concrete base 5, the lower end of the pile protection rod 4 penetrates through the concrete base 5 and is fixedly connected with the support plate 7, and an inverted cone 701 is disposed on the bottom surface of the support plate 7.

In the preferred scheme, fender pile pole 4 and backup pad 7 between adopt threaded connection, the outer wall of 4 lower extremes of fender pile pole is equipped with the external screw thread, is equipped with supporting screw hole on the 7 top surface central point positions of backup pad.

Example 2:

on the basis of the embodiment 1, the following construction method is adopted to carry out pile foundation pile protection construction:

1) prefabricating the pile protecting rod 4 and the concrete base 5 by using a special die 8;

2) prefabricating and binding a reinforcement cage 3;

3) excavating a pile protection pit 1 on site;

4) backfilling fine sand on the bottom surface of the excavated pile protection pit 1 to form a sand layer 2;

5) installing a reinforcement cage 3, ensuring that a main reinforcement 301 of the reinforcement cage 3 is inserted into the sand layer 2, and enabling the end parts of V-shaped reinforcements 6 on the periphery of the reinforcement cage 3 to be in contact with the side wall of the pile protection pit 1;

6) mounting a concrete base 5 into the reinforcement cage 3 to enable the reinforcement cage 3 and the concrete base 5 to be mutually embedded;

7) and tamping the backfilled soil body.

Example 3:

as shown in fig. 5-8, the special mold 8 is composed of a set of first side plates 9, a set of second side plates 10 and a bottom plate 11;

vertical convex strips 901 are arranged on two sides of the first side plate 9, and vertical grooves 1001 matched with the vertical convex strips 901 are arranged on two sides of the inner side surface of the second side plate 10;

two parallel horizontal grooves 111 are formed in two sides of the top surface of the bottom plate 11, and horizontal protruding strips 1002 matched with the horizontal grooves 111 are arranged at the bottom of the second side plate 10;

the middle part of the bottom plate 11 is provided with an opening 112 with the same size as the supporting plate 7.

In the preferred scheme, the upper end of the vertical rib 901 is flush with the top surface of the first side plate 9, the lower end of the vertical rib 901 is higher than the bottom surface of the first side plate 9, the length of the vertical groove 1001 is the same as that of the vertical rib 901, the upper end of the vertical groove 1001 is flush with the top surface of the second side plate 10, and the lower end of the vertical groove 1001 is higher than the bottom surface of the second side plate 10.

In a preferred embodiment, the opening 112 is in the shape of a step 113, and the size of the step 113 is the same as that of the support plate 7.

The above structure is adopted in the utility model, solved prior art, the fender pile volatile steady problem that the fender pile bottom part bearing capacity of inserting the soil layer is not enough, the less leading to of pile body frictional force, the stability of fender pile in the guarantee site environment to provide good condition for the pile foundation construction.

Claims (4)

1. The utility model provides a pile foundation pile guard, includes pile guard pole (4) and concrete foundation (5), characterized by: the concrete pile foundation structure is characterized by further comprising a reinforcement cage (3), the reinforcement cage (3) is of a rectangular structure with openings at two ends, the reinforcement cage (3) is vertically embedded in pile protection pits (1) on the periphery of the concrete base (5), and the concrete base (5) is arranged in the reinforcement cage (3);

the steel reinforcement cage (3) is formed by binding main reinforcements (301) and stirrups (302) through binding wires, a V-shaped steel bar (6) is further arranged between every two adjacent main reinforcements (301), one section of the V-shaped steel bar (6) is fixed on the steel reinforcement cage (3) through binding wires, and the other section of the V-shaped steel bar is inclined and extends upwards to be in contact with the side wall of the pile protection pit (1).

2. A pile foundation pile according to claim 1, wherein: a sand layer (2) is backfilled on the bottom surface of the pile protection pit (1), and the lower end of a main rib (301) of the steel reinforcement cage (3) is inserted into the sand layer (2).

3. A pile foundation pile according to claim 2, wherein: the concrete foundation (5) bottom be equipped with backup pad (7), protect the lower extreme of stake pole (4) and pass concrete foundation (5) and with backup pad (7) between be connected fixedly, be equipped with back taper (701) on backup pad (7) bottom surface.

4. A pile foundation pile according to claim 3, wherein: the pile protection rod (4) is in threaded connection with the supporting plate (7), external threads are arranged on the outer wall of the lower end of the pile protection rod (4), and a matched threaded hole is formed in the central point of the top surface of the supporting plate (7).

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