RU188064U1 - The unit for coupling the reinforcement piles with the foundation plate - Google Patents

Abstract

The utility model relates to the field of construction, in particular to the field of strengthening the foundation slab with the help of piles, and can be used in industrial and civil construction during the reconstruction and restoration of buildings and structures. The design includes support elements designed to transfer loads from the foundation plate to the reinforcement pile and located at the bottom of the foundation plate. The support pipe with steel bends is welded to the outlets of the longitudinal reinforcement of the pile and to the steel grips attached by the supporting tables to the sole of the foundation plate. Reinforcing bar-shorties are welded to the outlets of the upper reinforcement of the plate and attached to the support pipe with steel bends using anchor rods. The technical result is the expansion of the arsenal of funds. 4 ill.

Description

Application area

The utility model relates to the field of construction, in particular to the field of strengthening the foundation slab with the help of piles, and can be used in industrial and civil construction during the reconstruction and restoration of buildings and structures.

State of the art

In the technique known construction of the interface node reinforced slab foundation with an injection reinforcement pile (patent RU No. 85499 publ. 10.12.2011), consisting of an anchor plate and anchors. An anchor plate is located in the plane of the upper edge of the foundation plate and is attached to the latter using two U-shaped anchors, which are inserted under the previously exposed top reinforcing rods of the foundation plate. The tip of the injection pile from the steel pipe rests against the bottom of the anchor plate. The anchor plate is reinforced from above with welded stiffeners from the corners.

The disadvantages of the above construction are as follows: relatively small bearing capacity for pulling (the upper reinforcement of the plate works in bending, for which it is not intended); the possibility of transferring only longitudinal pressing force from the foundation plate to the pile; the lack of connection of the pile head with the anchor plate (in this regard, it is possible to form a gap and turn off the pile from working together with the plate); lack of concrete embedment in the hole; dependence on the parameters of the upper working fittings (presence, depth, pitch, diameter, technical condition); the need for a screed device to hide the protruding elements of the node; the complexity of inclusion in the work due to the need to load the piles to the desired draft.

In the technique known is the design of the assembly of the reinforced slab foundation with the injection reinforcement pile (patent RU No. 85498 publ. 10.12.2011), consisting of an anchor plate, stiffeners and anchor rods. An anchor plate is located in the plane of the upper edge of the foundation plate and is attached to the latter using four wedging anchors that are inserted into the concrete of the foundation plate. In the center, the anchor plate has an opening through which the tip of the injection pipe from the steel pipe is passed. The head protrudes flush above the edge of the slab.

The disadvantages of the above construction are as follows. Firstly, due to the use of proppant anchors, the pulling capacity of the node is relatively small. Secondly, the load is transferred from the foundation plate to the pile due to the length of the welds of the pipe to the stiffening ribs, which can lead to a large protrusion of the assembly elements above the cut plane of the foundation plate and, as a result, to a large thickness of the leveling screed.

The closest analogue is the assembly design (patent RU No. 2592314 publ. 07/20/2016), consisting of a steel plate with a central hole screwed onto the pile head to the level of the bottom reinforcement of the base plate. After drilling a hole in the foundation plate and installing the drill injection piles using Ischebeck Titan technology, the excess part of the drill rod (steel pipe acting as a rigid reinforcement of the pile) is cut off. Next, a head plate is screwed onto the pile head, having a central threaded hole and welded reinforcing bars in mutually perpendicular directions. The plate is twisted to the level of the bottom reinforcement of the base plate. Reinforcing slab rods and plates are connected to each other by shorties, and then the hole is concreted.

Such a solution does not provide the transfer of momentum forces from the foundation plate to the pile; it is tied only to the injection piles using Ischebeck Titan technology. The use of other piles requires a threaded pipe head. The bottom reinforcement of the foundation slab must be retained after the opening of the hole; therefore, diamond drilling cannot be used, which is significantly less time-consuming compared to a pneumatic breaker, especially for thick slabs. There is also no possibility of inclusion in the work at the amplification stage, which is a serious drawback.

Utility Model Essence

The technical task of the claimed utility model is to eliminate the above drawbacks and provide the possibility of creating a rigid unit for pairing a reinforced foundation slab of any thickness with a prefabricated reinforced concrete reinforcing pile of any design, as well as including piles with a foundation plate in joint work at the stage of its strengthening.

The technical result of the claimed utility model is to expand the arsenal of technical means.

The technical result is achieved by the fact that the node connecting the reinforcement piles to the foundation plate consists of support elements designed to transfer loads from the foundation plate to the reinforcement pile and located in the lower part of the foundation plate, while the support pipe with steel bends is welded to the outlets of the longitudinal reinforcement of the pile and steel grips attached by supporting tables to the bottom of the base plate, and short reinforcing bars are welded to the outlets of the upper reinforcement of the plate and attached to the supporting pipe when omoschi anchor rods.

The use of supporting elements allows us not to depend on the presence and parameters of the bottom reinforcement of the foundation plate, to provide rigid sealing of piles with the foundation plate and to include it in joint work with the foundation plate at the stage of its reinforcement. Reliable transmission of the longitudinal pressing force from the foundation plate to the reinforcement pile is ensured through support tables located under the base of the plate and does not require a subsequent screed device on top of the plate due to the absence of elements protruding above the upper edge of the plate.

The utility model is industrially applicable, since it can be repeatedly implemented with the achievement of the specified technical result.

The authors and applicants have not identified technical solutions from modern technology that contain the totality of all the claimed features characterizing a utility model, which confirms its novelty. The utility model is illustrated by drawings.

In FIG. 1 shows a General view of the node pairing reinforcement piles with a foundation plate, and in FIG. 2-4, respectively, sections aa, bb and bb.

The node pair reinforcement piles with a foundation plate includes:

1 - support pipe with steel bends;

2 - steel grips;

3 - rods - shortys;

4 - anchor rods;

5 - monolithic concrete;

6 - longitudinal reinforcement piles;

7 - foundation plate;

8 - hole;

9 - concrete preparation;

10 - pit;

11 - reinforced concrete pile;

12 - shtraby;

13 - fittings.

Utility Model Implementation

The support pipe 1 with steel bends is welded to the outlets of the longitudinal reinforcement of the pile 6 and to the steel grips 2, which are fixed by the supporting tables to the bottom of the base plate 7. Reinforcing bars-shorty 3 are welded to the outlets of the upper reinforcement of the plate and attached to the support pipe with steel bends 1 when using anchor rods 4.

The process of the device node pair reinforcement piles with the existing base plate 7 is as follows. In the existing base plate 7, a hole 8 is made by diamond drilling. Under concrete preparation 9 or directly under the foundation slab 7, the soil is developed with a hand drill with expansion knives, providing a hole 10 that is sufficient for the assembly of the unit. Through the hole 8, the precast reinforced concrete pile 11 of reinforcement is immersed in any way: driving, indentation, vibration-pressing, while the piles are provided with the release of longitudinal reinforcement 6. In the wall of the drilled hole at the foundation plate 7, with the help of a penalty 12, the trimmed upper working reinforcement 13 is exposed. The concrete surface of the foundation plates in the hole 8 and the stub 12 is dust-free by blowing with compressed air and is treated with a primer. Steel grippers 2 are installed in the hole 8, the support pipe 1 is installed on the pile head. The pile is included in the joint work with the plate by loading it through the support pipe 1. Next, the elements of the support pipe 1 are welded to the steel gripper plates, the outlets of the longitudinal reinforcement 6 of the pile are cut off place and also welded to the elements of the support pipe 1. The trimmed top working reinforcement of the base plate 7 is restored by installing reinforcing rods-shorties 3 for welding. Reconstructed reinforcement is anchored with elements 4 according to the site (Fig. 1, 4). The resulting design of the unit is concreted with class 5 concrete, not lower than the concrete class of the base plate 7, with compaction with a deep vibration damper.

Thus, the inventive design of the node provides the possibility of perception of momentary efforts of the reinforced plate by restoring its upper working reinforcement. Her joint work with the pile head is carried out using concrete, anchors and welds of the required length. The design of the unit allows it to be applied to foundation slabs of any thickness and prefabricated reinforced concrete piles of any design.

Claims (1)

The unit for coupling the reinforcement piles to the foundation plate, consisting of support elements designed to transfer loads from the foundation plate to the reinforcement pile and located at the bottom of the foundation plate, characterized in that the support pipe with steel bends is welded to the outlets of the longitudinal reinforcement of the pile and steel grippers, attached supporting tables to the bottom of the foundation plate, while the short reinforcing bars are welded to the outlets of the upper reinforcement of the plate and attached to the supporting pipe using anchor rods s.

Images