阅读说明：本技术 一种组合式连接混凝土抗拔桩 (Combined type connecting concrete uplift pile ) 是由 张清 张楚楠 刘可 于 2021-08-23 设计创作，主要内容包括：本发明公开了一种组合式连接混凝土抗拔桩,包括钢筋笼,钢筋笼上的纵向钢筋的两端分别设有墩头。所述墩头一端外套有凹型套,另外一端套有凹型加长套；所述凹型套内设有台阶孔,所述台阶孔卡住墩头；凹型套上安装有宝塔式螺杆,所述宝塔式螺杆上直径最小的地方安装有十字型开口弹力套；凹型加长套内安装有止回限位环所述凹型加长套内加入液体固化剂。本发明的有益效果是提高了工作效率及安全性,环氧树脂嵌缝密封凝固有效的保证连接件不会变形,增强了连接处的抗拔和抗剪切强度。(The invention discloses a combined type connecting concrete uplift pile which comprises a steel reinforcement cage, wherein pier heads are respectively arranged at two ends of longitudinal steel bars on the steel reinforcement cage. A concave sleeve is sleeved outside one end of the pier head, and a concave lengthening sleeve is sleeved outside the other end of the pier head; a step hole is formed in the concave sleeve and clamps the pier head; the concave sleeve is provided with a pagoda-type screw, and a cross-shaped opening elastic sleeve is arranged at the position with the smallest diameter on the pagoda-type screw; the concave lengthening sleeve is internally provided with a non-return limiting ring, and the concave lengthening sleeve is internally added with a liquid curing agent. The invention has the advantages of improving the working efficiency and safety, effectively ensuring that the connecting piece cannot deform by caulking, sealing and solidifying the epoxy resin, and enhancing the pulling resistance and the shearing resistance of the connecting part.)

1. The utility model provides a modular connection concrete uplift pile, includes the steel reinforcement cage, and the both ends of the last longitudinal reinforcement of steel reinforcement cage are equipped with pier nose, its characterized in that respectively: a concave sleeve is sleeved outside one end of the pier head, and a concave lengthening sleeve is sleeved outside the other end of the pier head; a step hole is formed in the concave sleeve and clamps the pier head; the concave sleeve is provided with a pagoda-type screw, and a cross-shaped opening elastic sleeve is arranged at the position with the smallest diameter on the pagoda-type screw; the concave lengthening sleeve is internally provided with a non-return limiting ring, and the concave lengthening sleeve is internally added with a liquid curing agent.

2. A combined connecting concrete uplift pile according to claim 1, wherein: the inner diameter surface of the concave lengthened sleeve is provided with screw teeth.

3. A combined connecting concrete uplift pile according to claim 1, wherein: and the inner diameter surface of the concave sleeve is uniformly distributed with screw teeth.

4. A combined connecting concrete uplift pile according to claim 1, wherein: the pagoda-type screw rod forms three sections of screw rods with different diameters, and screw teeth are arranged at the positions with the largest diameter and the smallest diameter respectively.

5. A combined connecting concrete uplift pile according to claim 1, wherein: the front end of the elastic sleeve with the cross-shaped opening is provided with internal threads, and the rear end of the elastic sleeve with the cross-shaped opening is provided with the cross-shaped opening.

6. A combined connecting concrete uplift pile according to claim 5, wherein: the rear ends form a quarter circle arc and are flared outwardly.

7. A combined connecting concrete uplift pile according to claim 1, wherein: and the outer surface of the non-return limiting ring is provided with screw teeth which are matched with the screw teeth in the concave lengthened sleeve.

Technical Field

The invention belongs to the technical field of concrete pile production and construction, and particularly relates to a combined type connecting concrete uplift pile.

Background

With the rapid development of the infrastructure of China, the wind power, railways, roads, bridge construction and the like in offshore areas and coastal areas need a pile product with better uplift resistance, corrosion resistance and durability to lay a foundation, and the demand of uplift resistance, corrosion resistance and durability piles is greatly increased. But the existing pile can not simultaneously have the characteristics of pulling resistance, corrosion resistance and good durability. The connection still adopts the technique of welding and manual connection card connection, so has had many problems, and the joint intensity fluctuation is big, connects unreliable, does not possess anticorrosive function, and the durability is poor. And the manual use amount is large during butt joint, raw materials are consumed, the efficiency is low, the alignment requirement is high, the safety is poor, the injury to constructors is easily caused, the disabilities are caused, the alignment success is not easy, and the influence on the construction efficiency and the potential safety hazard cannot be avoided.

CN204825873U discloses joggle formula concrete uplift pile, the both ends of the vertical reinforcing bar on its steel reinforcement cage are equipped with the pier nose respectively, the pier nose overcoat has the lock sleeve, be equipped with the step hole in the lock sleeve, the step hole blocks the pier nose, and the both ends of steel reinforcement cage are equipped with interior pinion rack and outer pinion rack respectively, all are equipped with countersunk head through-hole I on the axial direction of every internal tooth, all are equipped with countersunk head through-hole II on the axial direction of every external tooth, when implementing the butt joint of stake, counterpoint relatively easily, the operation is got up convenient and fast, has improved whole job schedule, but it does not adopt liquid curing agent, can not strengthen the resistance to plucking and the shear strength of junction.

Disclosure of Invention

Aiming at the defects, the invention aims to provide a combined type connecting concrete uplift pile which is simple in structure, easy to align, convenient and quick to connect, capable of improving construction efficiency, capable of enhancing uplift and shearing strength of a connecting part, safe and reliable.

Therefore, the technical scheme adopted by the invention is as follows: a combined type connecting concrete uplift pile comprises a steel reinforcement cage, wherein pier heads are respectively arranged at two ends of longitudinal steel bars on the steel reinforcement cage. One end of the pier head is sleeved with a concave sleeve, and the other end of the pier head is sleeved with a concave lengthening sleeve; a step hole is formed in the concave sleeve and clamps the pier head; the concave sleeve is provided with a pagoda-type screw, and a cross-shaped opening elastic sleeve is arranged at the position with the smallest diameter on the pagoda-type screw; a non-return limiting ring is arranged in the concave lengthening sleeve. A liquid curing agent which is epoxy resin is added into the concave lengthening sleeve.

Furthermore, the inner diameter surface of the concave lengthened sleeve is provided with screw teeth. The inner diameter surface of the concave sleeve is uniformly distributed with screw teeth.

Furthermore, the pagoda-type screw rod forms three sections of screw rods with different diameters, and screw teeth are arranged at the positions with the largest and smallest diameters respectively.

Furthermore, the front end of the elastic sleeve with the cross-shaped opening is provided with internal threads, the rear end of the elastic sleeve with the cross-shaped opening is provided with the cross-shaped opening, the rear end of the elastic sleeve forms a quartering arc and is expanded outwards to a certain extent, and a certain reducing force is achieved. After the butt joint is completed, the tight close engagement with other assemblies is kept.

Furthermore, the outer surface of the non-return limiting ring is provided with screw teeth which are matched with the screw teeth in the concave lengthened sleeve.

Compared with the prior art, the invention has the following beneficial effects:

1. the concrete pile connecting structure is simple in structure, and the construction efficiency and the construction safety are improved by adopting the structure to connect concrete piles. When the butt joint of the piles is implemented, a welding link is omitted, and environmental pollution caused by welding operation on a construction site is avoided. The joint is coated with the epoxy resin during butt joint, so that the joint is protected, and the corrosion resistance and the durability of the joint are improved by at least 50%. The operation is convenient and fast. The product can be more suitable for coastal engineering and project engineering with special requirements.

2. The special epoxy resin caulking, sealing and solidifying effectively ensures that the connecting piece cannot deform, and enhances the pulling resistance and the shearing resistance of the connecting part.

3. The front end of the cross-shaped opening elastic sleeve is provided with threads, the rear end of the cross-shaped opening elastic sleeve is provided with a cross-shaped opening, the rear end of the cross-shaped opening elastic sleeve forms a quartered circular arc, and the cross-shaped opening elastic sleeve has a certain outward expansion and a certain reduction force. After the butt joint is finished, the joint can be kept to be tightly attached and locked with other assembling parts, so that the joints form a mutually locked whole.

Drawings

Fig. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a concave elongated sleeve.

Fig. 3 is a female jacket.

Fig. 4 and 5 are schematic connection diagrams of the combined connection concrete uplift pile.

FIG. 6 is a pagoda screw.

Fig. 7 is a cross-shaped open elastic sleeve.

FIG. 8 is a check and stop collar.

In the figure, 1 is a reinforcement cage, 2 is a longitudinal reinforcement, 3 is a pier head, 4 is a concave lengthening sleeve, 5 is a concave sleeve, 6 is a pagoda-type screw rod, 7 is a cross-shaped opening elastic sleeve, 8 is a non-return limiting ring, and 9 is epoxy resin.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

As shown in fig. 1, a combined type connection concrete uplift pile comprises a steel reinforcement cage 1, wherein pier heads 3 are respectively arranged at two ends of a longitudinal steel bar 2 on the steel reinforcement cage 1, a concave sleeve 5 is sleeved outside one end of each pier head 3, and a concave lengthening sleeve 4 is sleeved at the other end of each pier head 3. A step hole is formed in the concave sleeve 5, and the pier head 3 is clamped in the step hole.

As shown in fig. 2, the inner diameter surface of the concave elongated sleeve 4 is provided with screw threads.

As shown in fig. 3, the female socket 5 has threads on the inner diameter surface thereof.

As shown in fig. 4, a pagoda screw 6 is mounted on the female housing 5. And a cross-shaped opening elastic sleeve 7 is arranged at the position with the smallest diameter on the pagoda-type screw 6. And a non-return limiting ring 8 is arranged in the concave lengthening sleeve 4.

As shown in fig. 5, before connection, a liquid curing agent, which is a special epoxy resin 9, is added to the concave elongated sleeve 4.

As shown in fig. 6, the pagoda screw 6 is formed with three sections of screws with different diameters, and the screw threads are respectively arranged at the positions with the largest and the smallest diameters.

As shown in fig. 7, the cross-shaped opening elastic sleeve 7 has a screw thread at the front end, a cross-shaped opening at the rear end, and a quartered arc at the rear end, and has a certain expansion and a certain reduction force outward. After the butt joint is finished, the tight fit and locking with other combined parts can be kept. So that the joints form a whole body locked with each other.

As shown in fig. 8, the outer surface of the non-return limit ring 8 is provided with threads, which are matched with the threads in the concave elongated sleeve 4.

When in connection, the hinge-type screw 6 provided with the cross-shaped opening elastic sleeve 7 extrudes and penetrates through the non-return limiting ring 8, so that the cross-shaped opening elastic sleeve 7 completely penetrates through the non-return limiting ring 8, and the cross-shaped opening elastic sleeve 7 restores the natural state and is occluded with the non-return limiting ring 8. The special liquid curing agent epoxy resin 9 plays a role in filling gaps in the connection process, and the special liquid curing agent epoxy resin 9 is caulked, sealed and solidified, so that the connecting piece cannot deform, and the effects of enhancing the pulling resistance and the shearing strength of the connecting part are achieved.

During construction, when one end of a first section of pile with a concave sleeve 5 is pressed downwards to the ground and the pile head is in butt joint with a second section of pile on the flat ground, surface dust at one end with the concave lengthening sleeve 4 is cleaned, a non-return limiting ring 8 is installed in the concave lengthening sleeve 4, and then special epoxy resin 9 is brushed on the surface of the pile head for caulking and sealing. A pagoda-type screw 6 and a cross-shaped opening elastic sleeve 7 are arranged at one end of a concave sleeve 5 of a second section of pile to be butted. The second section of pile is vertically lifted by the crane, one end of the second section of pile, which is provided with the pagoda-type screw 6 and the cross-shaped opening elastic sleeve 7, is downward, the crane rotates the suspension arm to enable the lower end of the second section of pile to be aligned with and driven into the concrete pile provided with the underground non-return limiting ring 8, the concrete pile provided with the pagoda-type screw 6 and the cross-shaped opening elastic sleeve 7 is slowly and vertically put down, the pagoda-type screw 6 provided with the cross-shaped opening elastic sleeve 7 is extruded to penetrate through the non-return limiting ring 8, the cross-shaped opening elastic sleeve 7 completely penetrates through the non-return limiting ring 8, and then the natural state is restored to be meshed with the non-return limiting ring 8. The special epoxy resin 9 caulking, sealing and solidifying effectively ensures that the connecting piece cannot deform, and plays a role in enhancing the pulling resistance and the shearing strength of the connecting part. So that the two piles are connected into a whole.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.