CN111962502A - Auxiliary anchoring assembly for bottom of cast-in-place concrete pile and reinforcing steel bar clamping sleeve damping structure of auxiliary anchoring assembly - Google Patents

Abstract

The invention discloses a cast-in-place concrete pile bottom auxiliary anchoring assembly which is characterized in that: comprises an inner ring, an outer ring and a steel bar cutting sleeve damping structure; the inner ring and the outer ring are fixed through a connecting rod; the steel bar cutting sleeve comprises a plurality of steel bar cutting sleeve damping structures which are uniformly fixed on the inner ring and the outer ring, and the axis of each steel bar cutting sleeve damping structure is parallel to the axis of the inner ring or the outer ring; comprises a steel bar and a clamping sleeve component sleeved on the steel bar; the clamping sleeve is characterized in that a plurality of clamping rings are coaxially assembled in a center hole of the clamping sleeve assembly, clamping teeth are arranged on inner rings of the clamping rings, and the clamping teeth and ribs of the reinforcing steel bars form a damping limiting clamping structure. The method can avoid the influence of the hole forming quality on the bearing capacity of the pile end, improve the pile forming quality of the pile body grouting, and improve the accuracy in the self-balancing static load test.

Description

Auxiliary anchoring assembly for bottom of cast-in-place concrete pile and reinforcing steel bar clamping sleeve damping structure of auxiliary anchoring assembly

Technical Field

The invention relates to the field of building engineering pile foundations, in particular to a cast-in-place concrete pile bottom auxiliary anchoring assembly and a steel bar clamping sleeve damping structure thereof.

Background

At present, with the application popularization of the static load detection technology of the self-balancing pile foundation of the pile foundation, the convenience and the economical efficiency are increasingly outstanding. Compared with the traditional static load, the loading force-applying point of the self-balancing method is closer to the pile end, the test condition of end resistance exertion is more sensitive, and the pile-forming quality of the pile end is more obvious, so the quality of the pile-forming quality has great influence on the detection of the vertical bearing capacity.

However, in the prior art, because a lot of hard sediments at the bottom of the pile hole are difficult to remove, when the reinforcement cage is placed in the pile hole, the local position of the bottom of the reinforcement cage can contact the hard sediments, so that the whole reinforcement cage cannot be stably placed in the pile hole, the vertical bearing capacity of the reinforcement cage after pile forming is poor, and the pile forming quality of the pile body and the accuracy of the self-balancing static load test are affected.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a cast-in-place concrete pile bottom auxiliary anchoring assembly and a steel bar clamping sleeve damping structure thereof, which can avoid the influence of pore-forming quality on the bearing capacity of a pile end, improve the pile-forming quality of pile body grouting and improve the accuracy in a self-balancing static load test.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a reinforcing bar cutting ferrule damping structure, characterized by: comprises a steel bar and a clamping sleeve component sleeved on the steel bar;

the clamping sleeve is characterized in that a plurality of clamping rings are coaxially assembled in a center hole of the clamping sleeve assembly, clamping teeth are arranged on inner rings of the clamping rings, and the clamping teeth and ribs of the reinforcing steel bars form a damping limiting clamping structure.

Preferably, the ferrule assembly comprises a sleeve, a lock nut and a press ring set;

the compression ring set is coaxially matched in the central hole of the sleeve;

the locking nut is in threaded fit in the central hole of the sleeve, and the pressure ring set is fixed in the sleeve;

the snap ring is fixed between the press ring groups.

Preferably, the pressing ring set at least comprises two coaxial pressing rings which are arranged axially, and the clamping ring is fixed between the end faces of the two adjacent pressing rings.

Preferably, the center hole of the ferrule assembly is divided into a guide section and an assembly section, and an inner step is formed between the guide section and the assembly section; the pressure ring group is assembled in the assembling section, and one clamping ring is fixed between the end face of the pressure ring group and the inner step.

The utility model provides a supplementary anchor subassembly in cast-in-place concrete pile bottom which characterized by: comprises an inner ring, an outer ring and a steel bar cutting sleeve damping structure;

the inner ring and the outer ring are fixed through a connecting rod;

the steel bar cutting sleeve comprises a plurality of steel bar cutting sleeve damping structures which are uniformly fixed on the inner ring and the outer ring, and the axis of each steel bar cutting sleeve damping structure is parallel to the axis of the inner ring or the axis of the outer ring.

The invention has the advantages that: when the steel bar cage is arranged at the bottom of the steel bar cage and is placed in the pile hole, when the steel bar contacts hard sediments, the corresponding steel bar can overcome the damping force generated by the clamping ring to move upwards so as to adapt to the overall downward movement of the steel bar cage, so that the lower ends of all the steel bars can be stably supported, the steel bar cage can be stably placed in the pile hole, stable bearing capacity is provided, and the pile forming quality and the self-balancing detection accuracy are obviously improved.

Drawings

Fig. 1 is a schematic view of a reinforcement cage and an auxiliary anchoring assembly for a bottom of a poured concrete pile according to the present embodiment;

fig. 2 is a cross-sectional view of a steel bar cutting ferrule damping structure provided in this embodiment;

fig. 3 is a top view of the snap ring provided in the present embodiment.

Detailed Description

The cast-in-place concrete pile bottom auxiliary anchoring assembly and the steel bar ferrule damping structure thereof according to the present invention will be further described with reference to fig. 1 to 3.

The utility model provides a supplementary anchor subassembly in cast-in-place concrete pile bottom which characterized by: including an inner ring 23, an outer ring 21 and a rebar ferrule damping structure 22.

The inner ring 23 and the outer ring 21 are fixed by welding through a connecting rod 24. The reinforcing steel bar cutting sleeve damping structure 22 is provided with a plurality of reinforcing steel bar cutting sleeve damping structures, the uniform parts of the reinforcing steel bar cutting sleeve damping structures are welded and fixed on the inner ring 23 and the outer ring 21, and the axis of the reinforcing steel bar cutting sleeve damping structure 22 is parallel to the axis of the inner ring 23 or the outer ring 21. The steel bar ferrule damping structure 22 comprises a steel bar 222 and a ferrule assembly 221 sleeved on the steel bar 222; a plurality of clamping rings 2213 are coaxially assembled in the central hole of the clamping sleeve assembly 221, a plurality of dividing slits 22131 are uniformly distributed on the inner ring of each clamping ring 2213, a clamping tooth 22132 is formed between every two adjacent dividing slits, and the clamping tooth 22132 and the rib 2221 of the steel bar 222 form a damping limiting clamping structure.

Based on the above structure, the inner ring 23 and the outer ring 21 in the invention are welded and fixed on the bottom of the steel reinforcement cage 1, and in each steel reinforcement cutting sleeve damping structure 22, the lower end of the steel reinforcement 222 passes through the central hole of the cutting sleeve assembly 221 and is positioned below the cutting sleeve assembly 221. Therefore, in-process is transferred to steel reinforcement cage 1 in the stake hole, when the reinforcing bar 222 that is located 1 bottom of steel reinforcement cage contacts the stereoplasm sediment, the reinforcing bar 222 that corresponds under the holistic weight of steel reinforcement cage 1 can overcome the damping force that snap ring 2213 produced to it and shift up to adapt to that steel reinforcement cage 1 is whole to continue to move down, consequently, when steel reinforcement cage 1 falls to the bottom in stake hole, the lower extreme homoenergetic of all reinforcing bars can obtain stable support, make steel reinforcement cage 1 stably put in the stake hole, in order to provide stable bearing capacity, the quality of piling and the precision that the self-balancing detected have been showing and have been promoted.

It should be noted that the damping force of the ferrule assembly 221 on the steel bar can be set according to actual use conditions. The damping force of the reinforcing steel bar can be adjusted by setting the number and structure of the snap teeth 22132 in the snap ring 2213. If the diameter of the steel reinforcement cage 1 is larger, a middle ring can be arranged, so that the damping structures 22 of the steel reinforcement cutting ferrule can be uniformly distributed.

As shown in fig. 2, the ferrule assembly 221 includes a sleeve 2211, a lock nut 2214, and a set of compression rings 2212. The pressing ring set 2212 is coaxially fitted in a central hole of the sleeve 2211, and the central hole of the sleeve 2211 is a central hole of the ferrule assembly 221. The locking nut 2214 is in threaded fit in the central hole of the sleeve 2211 and is pressed against the end face of the pressing ring set 2212 so as to axially limit and fix the pressing ring set 2212 in the central hole of the sleeve 2211. A portion of the snap ring 2213 is fixed between the press ring sets 2212. The pressing ring set 2212 at least has two pressing rings 22121/22122 which are coaxially and axially arranged, the specific number is limited according to the number of the clamping rings 2213, and the clamping rings 2213 are fixed between the end faces of two adjacent pressing rings. Under this structure, the dismouting of snap ring 2213 to and the settlement of the snap ring 2213 quantity of being convenient for can be convenient for. When setting up the snap ring 2213 of different quantity, also can produce the damping force of equidimension not to the reinforcing bar, convenient to use and flexibility are high.

The central bore of ferrule assembly 221 is divided into a guide section 22111 and a fitting section 22112, the diameter of guide section 22111 is smaller than the diameter of fitting section 22112 to form an inner step 22113 between guide section 22111 and fitting section 22112; the pressing ring group 2212 is assembled in the assembling section 22112, and one clamping ring 2213 is fixed between the upper end face of the pressing ring group 2212 and the inner step, so that the number of the pressing rings can be reduced; the setting of direction section 22111 can play radial spacing effect to the reinforcing bar, avoids the reinforcing bar to take place the problem that radially rocks in the centre bore.

Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.

Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims (5)

1. The utility model provides a reinforcing bar cutting ferrule damping structure, characterized by: comprises a steel bar and a clamping sleeve component sleeved on the steel bar;

the clamping sleeve is characterized in that a plurality of clamping rings are coaxially assembled in a center hole of the clamping sleeve assembly, clamping teeth are arranged on inner rings of the clamping rings, and the clamping teeth and ribs of the reinforcing steel bars form a damping limiting clamping structure.

2. The rebar ferrule damping structure of claim 1, wherein: the clamping sleeve assembly comprises a sleeve, a locking nut and a pressing ring set;

the compression ring set is coaxially matched in the central hole of the sleeve;

the locking nut is in threaded fit in the central hole of the sleeve, and the pressure ring set is fixed in the sleeve;

the snap ring is fixed between the press ring groups.

3. The rebar ferrule damping structure of claim 2, wherein: the pressing ring set is at least provided with two coaxial pressing rings which are arranged axially, and the clamping ring is fixed between the end faces of the two adjacent pressing rings.

4. The rebar ferrule damping structure of claim 3, wherein: the center hole of the cutting sleeve component is divided into a guide section and an assembly section, and an inner step is formed between the guide section and the assembly section; the pressure ring group is assembled in the assembling section, and one clamping ring is fixed between the end face of the pressure ring group and the inner step.

5. The utility model provides a supplementary anchor subassembly in cast-in-place concrete pile bottom which characterized by: comprising an inner ring, an outer ring and a steel bar ferrule damping structure as claimed in any one of claims 1-4;

the inner ring and the outer ring are fixed through a connecting rod;

the steel bar cutting sleeve comprises a plurality of steel bar cutting sleeve damping structures which are uniformly fixed on the inner ring and the outer ring, and the axis of each steel bar cutting sleeve damping structure is parallel to the axis of the inner ring or the axis of the outer ring.

Images