Combined impact-resistant pile cap

Abstract

The utility model discloses a combined type shock-resistant pile cap, which relates to the technical field of building precast piles, and comprises a stand column, a hammer cap pile cap structure is arranged at the inner side attaching part of a diesel hammer and a precast pile, and the hammer cap pile cap structure consists of a split type hammer cap part and a pile cap part. Through cooperation of a hammer cap bottom steel plate screw connecting hole, a pile cap connecting steel plate, a screw hole, a hammer cap and pile cap structure, a precast pile and a diesel hammer, hammering is started for 1-3 times at the minimum falling distance, then perpendicularity of two directions (90 degrees) is adjusted once to coincide, and then formal hammering is conducted till the designed depth is reached. The pile driving method suitable for the combined impact-resistant hammer cap and pile cap comprises a hydraulic pile driving hammer pile driving method and a diesel pile driving hammer pile driving method, the method is easy and convenient to use, the perpendicularity of a pile can be guaranteed, penetration is convenient, popularization is convenient, and the good market prospect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of building prefabricated piles, in particular to a combined impact-resistant pile cap. Background Art

[0002] At present, the traditional hammer cap and pile cap used in prefabricated piles in building pile foundations are integrated. The hammer and pile cap elastic pad are generally clamped and placed with hard miscellaneous wood vertical grain. Due to the accumulation of vertical errors after each impact, the hammer, cap and pile are gradually not on the same center line. When the hammer is struck, the eccentric stress is concentrated on one side of the pile head, and the other side that is struck is very small or not stressed. The stressed side bears twice the impact stress, which exceeds the allowable stress value of the pile head concrete design and causes the pile head concrete to be damaged.

[0003] There is a pile cap device for a hydraulic pile hammer currently on the market. The pile cap used in the patent authorization publication number CN217399629U is in the form of a hammer and a pile cap integrated. The disadvantage is that it cannot adjust and restore the influence of the uneven elastic pad on the verticality of the pile caused by each pile driving. The pile damage rate caused by this type of pile cap in the pile driving process seriously exceeds the allowable 1% damage rate stipulated in the current industry standard JGJ94-2008 "Technical Specifications for Building Pile Foundations". Therefore, the purpose of this application is to apply for a pile driving method suitable for a new type of combined impact-resistant pile cap. This type of combined impact-resistant pile cap is suitable for diesel pile hammers and hydraulic pile hammers and has achieved good results in pile driving practice. The damage rate of the pile head is controlled within 0.5% stipulated in the specification and is well received by the owner. The combined impact-resistant pile cap is simple to make and low in cost, and has a good market and promotion prospect. Utility Model Content

[0004] The utility model aims to provide a combined impact-resistant pile cap to solve the problem that the verticality of the pile cannot be adjusted and restored due to the uneven elastic pad caused by each pile driving, because the disadvantage of the integrated hammer and pile cap mentioned in the above background technology is that the uneven elastic pad cannot be adjusted and restored.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A combined impact-resistant pile cap is designed, comprising a column, wherein a diesel hammer and a precast pile are respectively distributed on the upper and lower sides of the left part of the column, a hammer cap pile cap structure is installed on the inner fitting part of the diesel hammer and the precast pile, and the hammer cap pile cap structure consists of a split hammer cap part and a pile cap part.

[0007] Preferably, the hammer cap part is composed of a piston-shaped leveling steel plate under the hammer cap, a hammer cap steel ring, a hammer cap reinforcing rib and connecting holes, a hammer cap bottom steel plate, a hammer cap wire rope buffer pad, a hammer cap hard wood core and a hammer cap bottom steel plate screw connecting hole. A hammer cap steel ring is fixedly connected to the upper body of the screw connecting hole of the hammer cap bottom steel plate, and a plurality of hammer cap reinforcing ribs and connecting holes are fixedly connected to the outer wall of the hammer cap steel ring. A hammer cap wire rope buffer pad is arranged inside the hammer cap steel ring, and both sides of the hammer cap wire rope buffer pad are respectively connected to the piston-shaped leveling plate under the hammer cap and the main body of the screw connecting hole of the hammer cap bottom steel plate, and a hammer cap hard wood core is installed at the inner center of the hammer cap wire rope buffer pad.

[0008] Preferably, the pile cap part consists of a pile cap connecting steel plate and screw holes, a pile cap steel ring, a pile cap steel ring rib, a pile cap guide port, a pile cap hard wood core, a pile cap wire rope buffer pad, a pile cap compression movement balance plate and a limiting steel plate ring. The pile cap steel ring is fixedly connected to the inner side of the lower end of the main body of the pile cap connecting steel plate and the screw hole, a plurality of pile cap steel ring ribs are equidistantly fixed to the outer wall of the pile cap steel ring, a pile cap guide port is fixedly connected to the lower outer edge of the pile cap steel ring, a pile cap compression movement balance plate is provided on the inner wall of the pile cap steel ring, the upper outer side and center of the pile cap compression movement balance plate are respectively connected to the pile cap wire rope buffer pad and the pile cap hard wood core, and a limiting steel plate ring is distributed on the lower part of the inner wall of the pile cap steel ring.

[0009] Preferably, the upper part of the piston-shaped leveling plate under the hammer cap is processed with a notch that fits with the piston under the hammer, and the upper part of the piston-shaped leveling plate under the hammer cap fits with the end of the diesel hammer through the piston under the hammer.

[0010] Preferably, the limiting steel plate ring is sleeved on the outer wall of the precast pile, and the lower surface of the pile cap compression moving balance plate is in contact with the end of the precast pile.

[0011] The utility model provides a combined impact-resistant pile cap, which has the following beneficial effects:

[0012] Through the cooperation between the screw connection holes of the hammer cap bottom steel plate, the pile cap connection steel plate and the screw holes, the hammer cap pile cap structure, the prefabricated pile and the diesel hammer, when using the diesel pile hammer and the hydraulic pile hammer, the straightening instrument in two directions should be installed on the pile driver column before the pile is erected. The verticality of the column in two directions should be straightened before the allowable error is within 1% and the diesel hammer, the hammer cap and the pile cap, and the prefabricated pile are adjusted to a vertical line or the distance between the parallel lines of the prefabricated pile, the diesel hammer, the hammer cap and the pile cap and the parallel lines of the column are equal before the hammering is started. After the hammering starts with the minimum drop distance for 1-3 times, it is adjusted again once the verticality in the two directions (90°) coincides before the formal driving is started to the designed depth. During use, the upper hammer cap is a fixed part that does not change, and the lower pile cap is replaced according to the size of the pile. The pile driving methods applicable to the combined impact-resistant hammer cap and pile cap are: hydraulic pile hammer piling and diesel pile hammer piling methods. This method is easy to use, can ensure the verticality of the pile for easy penetration, is easy to promote and has good market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the utility model when vertical adjustment is in use;

[0014] Figure 2 It is a structural schematic diagram of the combined impact-resistant hammer cap and pile cap of the utility model.

[0015] In the figure: 1. Piston-shaped leveling plate under hammer cap, 2. Steel ring of hammer cap, 3. Reinforced ribs and connecting holes of hammer cap, 4. Steel plate at bottom of hammer cap, 5. Buffer pad for steel wire rope of hammer cap, 6. Hard wooden core of hammer cap, 7. Screw connecting holes of steel plate at bottom of hammer cap, 8. Piston under hammer, 9. Connecting steel plate and screw holes of pile cap, 10. Steel ring of pile cap, 11. Ribs of steel ring of pile cap, 12. Guide opening of pile cap, 13. Hard wooden core of pile cap, 14. Buffer pad for steel wire rope of pile cap, 15. Compression moving balance plate of pile cap, 16. Limiting steel plate ring, 17. Pile cap structure of hammer cap, 18. Precast pile, 19. Diesel hammer, 20. Column. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the accompanying drawings:

[0017] Embodiment 1:

[0018] See attached Figure 1-2 In the present embodiment, a combined impact-resistant pile cap includes a column 20, characterized in that a diesel hammer 19 and a precast pile 18 are respectively distributed on the upper and lower sides of the left part of the column 20, the diesel hammer 19 serves as a power hammering part, and the precast pile 18 is used to drive piles into the ground, and a hammer cap pile cap structure 17 is installed on the inner fitting part of the diesel hammer 19 and the precast pile 18, and the hammer cap pile cap structure 17 consists of a split hammer cap part and a pile cap part.

[0019] See attached Figure 1-2 In this embodiment, the hammer cap part is composed of a piston-shaped leveling steel plate 1 under the hammer cap, a hammer cap steel ring 2, a hammer cap reinforcing rib and a connecting hole 3, a hammer cap bottom steel plate 4, a hammer cap wire rope buffer pad 5, a hammer cap hard wood core 6 and a hammer cap bottom steel plate screw connecting hole 7. A hammer cap steel ring 2 is fixedly connected to the upper part of the main body of the hammer cap bottom steel plate screw connecting hole 7, and a plurality of hammer cap reinforcing ribs and connecting holes 3 are fixedly connected to the outer wall of the hammer cap steel ring 2. A hammer cap wire rope buffer pad 5 is arranged inside the hammer cap steel ring 2, and the hammer cap wire rope buffer pad 5 is used to protect To ensure the impact buffering process, the two sides of the hammer cap wire rope buffer pad 5 are respectively connected to the piston-shaped leveling plate 1 under the hammer cap and the main body of the screw connecting hole 7 of the hammer cap bottom steel plate, and the inner center of the hammer cap wire rope buffer pad 5 is installed with a hammer cap hard wood core 6. The hammer cap hard wood core 6 realizes the damping effect to slow down the shaking of the hammer cap wire rope buffer pad 5. The upper part of the piston-shaped leveling plate 1 under the hammer cap is processed with a notch that fits with the hammer lower piston 8. The upper part of the piston-shaped leveling plate 1 under the hammer cap fits with the end of the diesel hammer 19 through the hammer lower piston 8.

[0020] See attached Figure 1-2 In this embodiment, the pile cap part is composed of a pile cap connecting steel plate and screw holes 9, a pile cap steel ring 10, a pile cap steel ring rib 11, a pile cap guide port 12, a pile cap hard wood core 13, a pile cap wire rope buffer pad 14, a pile cap compression movement balance plate 15 and a limit steel plate ring 16. The pile cap steel ring 10 is fixedly connected to the inner side of the lower end of the main body of the pile cap connecting steel plate and the screw holes 9, and a plurality of pile cap steel ring ribs 11 are fixedly connected to the outer wall of the pile cap steel ring 10 at equal intervals. The lower outer edge of the pile cap steel ring 10 is fixedly connected to the pile cap guide port 12, and the inner wall of the pile cap steel ring 10 is provided with a pile cap. The pile cap compresses and moves the balancing plate 15, and the pile cap wire rope buffer pad 14 is used to ensure the impact buffering process. The pile cap hard wood core 13 realizes the damping effect to slow down the shaking of the pile cap wire rope buffer pad 14. The upper outer side and the center of the pile cap compress and move the balancing plate 15 are respectively connected to the pile cap wire rope buffer pad 14 and the pile cap hard wood core 13. The lower part of the inner wall of the pile cap steel ring 10 is distributed with a limited steel plate ring 16, and the limited steel plate ring 16 is sleeved on the upper part of the outer wall of the precast pile 18. The lower surface of the pile cap compresses and moves the balancing plate 15 and fits with the end of the precast pile 18;

[0021] Through the cooperation between the hammer cap pile cap structure 17, the prefabricated pile 18 and the diesel hammer 19, when using the diesel pile hammer and the hydraulic pile hammer, the verticality of the column in two directions should be adjusted before the pile driver column is installed with the straightening instrument in two directions. After the verticality of the column in two directions is adjusted to within the allowable error of 1%, the diesel hammer, the hammer cap and the pile cap, and the prefabricated pile are adjusted to a vertical line or the prefabricated pile, the diesel hammer, the hammer cap and the pile cap parallel line are equal to the parallel line of the column before starting the hammering. After starting the hammering with the minimum drop distance 1-3 times, adjust the verticality of the two directions (90°) to coincide and then officially start to drive to the designed depth. During use, the upper hammer cap is a fixed part that is not replaced, and the lower pile cap is replaced according to the size of the pile. The pile driving methods applicable to the combined impact-resistant hammer cap and pile cap are: hydraulic pile hammer piling and diesel pile hammer piling methods. The method is easy to use, can ensure the verticality of the pile, is easy to penetrate, and is easy to promote and has a good market prospect.

[0022] Working principle:

[0023] The piston-shaped leveling plate 1 under the hammer cap is placed inside the hammer cap steel ring 2 and is connected to the hammer cap steel ring 2 and the hammer cap wire rope buffer pad 5. The hammer cap wire rope buffer pad 5 is placed between the piston-shaped leveling plate 1 under the hammer cap and the hammer cap bottom middle plate 4. The hammer cap hard wood core 6 is placed at the center of the hammer cap wire rope buffer pad 5 and between the piston-shaped leveling plate 1 under the hammer cap and the hammer cap bottom middle plate 4. The hammer cap reinforcing ribs and connecting holes 3 are welded to the hammer cap steel ring 2 in the vertical direction and to the hammer cap bottom middle plate 4 in the horizontal direction. The hammer cap bottom steel plate screw connecting holes are in the hammer cap bottom middle plate 4, which are used to connect the hammer cap bottom middle plate 4 and the pile cap connecting steel plate and screw holes 9 with screws.

[0024] Pile cap part: the pile cap connecting steel plate and screw holes 9 are connected with the hammer cap bottom middle plate 4 and screws, the pile cap steel ring rib plate 11 is welded with the pile cap connecting steel plate and screw holes 9 in the horizontal direction and welded with the pile cap steel ring 10 in the vertical direction, the pile cap compression movement balance plate 15 is connected with the pile cap steel ring 10, the pile cap wire rope buffer pad 14 is placed between the pile cap compression movement balance plates 15, the pile cap hard wood core 13 is placed in the center of the pile cap wire rope buffer pad 14, the limiting steel plate ring 16 is welded to the inner side of the pile cap steel ring 10, and the pile cap guide port 12 is welded with the pile cap steel ring rib plate 11 and the lower part of the pile cap steel ring 10;

[0025] Combined anti-impact pile cap and applicable piling method: When using diesel pile hammer and hydraulic pile hammer, the straightening instrument in two directions should be installed on the column of the pile driver before piling. The verticality of the column in two directions should be adjusted to within the allowable error of 1% and the diesel hammer, hammer cap and pile cap, prefabricated pile should be adjusted to a vertical line or the distance between the parallel lines of the prefabricated pile, diesel hammer, hammer cap and pile cap and the parallel line of the column should be equal before starting hammering. After starting hammering with the minimum drop distance 1-3 times, adjust the verticality in two directions (90°) to coincide and then officially start driving to the designed depth. During use, the upper hammer cap is a fixed part that does not change, and the lower pile cap is replaced according to the size of the pile. The pile driving methods applicable to the combined anti-impact hammer cap and pile cap are: hydraulic pile hammer piling and diesel pile hammer piling methods. This method is easy to use, can ensure the verticality of the pile for easy penetration, and is easy to promote and has a good market prospect.

[0026] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A combined impact-resistant pile cap, comprising a column (20), characterized in that: A diesel hammer (19) and a precast pile (18) are respectively arranged on the upper and lower sides of the left part of the column (20); a hammer cap and a pile cap structure (17) are installed on the inner fitting parts of the diesel hammer (19) and the precast pile (18); the hammer cap and the pile cap structure (17) are composed of a split hammer cap part and a pile cap part.

2. The combined impact-resistant pile cap according to claim 1, characterized in that: The hammer cap part is composed of a piston-shaped leveling plate (1) under the hammer cap, a hammer cap steel ring (2), a hammer cap reinforcing rib and a connecting hole (3), a hammer cap bottom steel plate (4), a hammer cap wire rope buffer pad (5), a hammer cap hard wood core (6) and a hammer cap bottom steel plate screw connecting hole (7), wherein the hammer cap steel ring (2) is fixedly connected to the upper body of the hammer cap bottom steel plate screw connecting hole (7), the outer wall of the hammer cap steel ring (2) is fixedly connected to a plurality of hammer cap reinforcing ribs and a connecting hole (3), a hammer cap wire rope buffer pad (5) is arranged inside the hammer cap steel ring (2), the two sides of the hammer cap wire rope buffer pad (5) are respectively connected to the piston-shaped leveling plate (1) under the hammer cap and the main body of the hammer cap bottom steel plate screw connecting hole (7), and the inner center of the hammer cap wire rope buffer pad (5) is installed with a hammer cap hard wood core (6).

3. The combined impact-resistant pile cap according to claim 1, characterized in that: The pile cap part is composed of a pile cap connecting steel plate and screw holes (9), a pile cap steel ring (10), a pile cap steel ring rib (11), a pile cap guide opening (12), a pile cap hardwood core (13), a pile cap wire rope buffer pad (14), a pile cap compression movement balance plate (15) and a limit steel plate ring (16). The pile cap steel ring (10) is fixedly connected to the inner side of the lower end of the main body of the pile cap connecting steel plate and the screw holes (9). The outer wall of the pile cap steel ring (10) is fixedly connected to the pile cap steel ring (10) at equal intervals. A plurality of pile cap steel ring ribs (11) are connected, a pile cap guide opening (12) is fixedly connected to the lower outer edge of the pile cap steel ring (10), a pile cap compression movement balance plate (15) is arranged on the inner wall of the pile cap steel ring (10), a pile cap steel wire rope buffer pad (14) and a pile cap hardwood core (13) are respectively connected to the upper outer side and the center of the pile cap compression movement balance plate (15), and a limited steel plate ring (16) is distributed on the lower part of the inner wall of the pile cap steel ring (10).

4. The combined impact-resistant pile cap according to claim 2, characterized in that: The upper part of the piston-shaped leveling plate (1) under the hammer cap is processed with a notch that fits with the piston (8) under the hammer, and the upper part of the piston-shaped leveling plate (1) under the hammer cap fits with the end of the diesel hammer (19) through the piston (8) under the hammer.

5. The combined impact-resistant pile cap according to claim 3 is characterized in that: The limiting steel plate ring (16) is sleeved on the outer wall of the precast pile (18), and the lower surface of the pile cap compression moving balance plate (15) is in contact with the end of the precast pile (18).

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