Cast-in-place CFG pile composite foundation structure

Abstract

The utility model provides a cast-in-place CFG pile composite foundation structure, including a base layer, a plurality of casting holes are arranged on the base layer, and a pile body is formed in the casting holes after casting, a pile cap located above the pile body is arranged on the top of the base layer, and also includes a telescopic adjustment rod, the external fixing sleeve of the pile cap is provided with an annular disk, and the disk surface of the annular disk is provided with anchor holes and connection holes evenly distributed in the circumference, and the connection holes are located on the inner side of the anchor holes, and the two ends of the telescopic adjustment rod are fixedly connected with hanging shafts plugged with the connection holes. The utility model further strengthens the tightness of the connection between a single pile body and the surface layer of the base layer by arranging an annular disk with anchor holes on the outside of the pile cap, and by arranging a telescopic adjustment rod with hanging shafts at both ends, and then arranging connection holes on the annular disk, it is convenient to support and limit the adjacent pile bodies, and compared with the prior art, the defect of the pile body tilting outward is eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of composite foundations, in particular to a cast-in-place CFG pile composite foundation structure. Background Art

[0002] The existing CFG pile is cast inside the foundation, while the top of the CFG pile is located outside the foundation and a pile cap is required. However, the foundation has poor compressive strength and is prone to deformation. In addition, the connection between the upper end of the CFG pile and the foundation is relatively fragile. When the foundation is subjected to force, the CFG pile is prone to dislocation, thereby failing to ensure the firmness of the CFG pile.

[0003] At present, the utility model with the publication number CN217419595U proposes an improved cast-in-place CFG pile composite foundation structure, including a base layer, a plurality of casting holes are provided on the upper surface of the base layer, a pile body is arranged in the casting holes, a pile cap is arranged on the upper end of the pile body, an annular groove is provided on the outer wall of the pile cap, a plurality of sliders are arranged in the annular groove, the sliders are slidably connected with the annular groove, and the sliders are engaged with the annular groove, and a fixed pointed cone is arranged on the reinforcing plate. In the utility model, the slider at one end of the reinforcing plate can be inserted into the annular groove outside the pile cap by the engagement of the sliders with the annular groove, and the slider at the other end of the reinforcing plate can be inserted into the annular groove of another pile cap, and according to the inclination angle between the two pile caps, the slider can slide in the annular groove with the reinforcing plate, so that the reinforcing plate can play a better role, and the fixed pointed cone is inserted into the base layer to fix the reinforcing plate, and the pile body can be prevented from deflecting by the support of the reinforcing plate between every two pile bodies.

[0004] However, the above-mentioned prior art still has the following deficiencies when used: 1. The reinforcing plate and the sliders located at both ends of the reinforcing plate only play the role of supporting the two adjacent pile bodies, and do not have the function of pulling the two adjacent pile bodies. Therefore, when the foundation is squeezed, the pile body is easy to tilt in the direction away from the slider, thereby making the anti-tilting effect of the pile body poor; 2. The reinforcing plate used can only limit the adjacent pile bodies, but cannot limit the relative pile bodies. That is to say, the limiting force on the relative pile bodies is relatively weak, which makes the relative pile bodies easy to tilt in opposite and reverse directions. Therefore, there is a defect of incomplete restriction on the pile bodies.

[0005] To this end, the utility model provides a cast-in-place CFG pile composite foundation structure. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a cast-in-place CFG pile composite foundation structure to solve the problems raised in the above-mentioned background technology. The present invention has the advantages of in-situ reinforcement of a single pile body, the function of supporting and pulling adjacent and relative pile bodies, and the advantage of comprehensive position limiting and fixing of the pile body.

[0007] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a cast-in-place CFG pile composite foundation structure, including a base layer, a plurality of casting holes are arranged on the base layer, a pile body is formed in the casting holes after casting, a pile cap located above the pile body is arranged on the top of the base layer, and also includes a telescopic adjustment rod, an external fixed sleeve of the pile cap is provided with an annular disk, and the disk surface of the annular disk is provided with anchor holes and connecting holes evenly distributed in the circumference, the connecting hole is located on the inner side of the anchor hole, and both ends of the telescopic adjustment rod are fixedly connected with hanging shafts plugged into and matched with the connecting holes.

[0008] Furthermore, the annular disk is located at the bottom of the pile cap, and anchor rods uniformly distributed in the circumferential direction are welded to the bottom of the annular disk.

[0009] Furthermore, a protective rubber sleeve is embedded in the anchor hole.

[0010] Furthermore, the telescopic adjustment rod includes a connecting rod and a locking bolt, the number of the connecting rods is two and a guide sleeve is welded on one side of the two connecting rods, the guide sleeve on one connecting rod is sleeved on the other connecting rod and is slidably arranged, the locking bolt passes through the outer peripheral wall of the screwed guide sleeve and one end of the locking bolt cooperates with one side of the connecting rod, and one end of the connecting rod is welded to the hanging shaft.

[0011] Furthermore, one side of the connecting rod is provided with an anti-slip thread opposite to the locking bolt.

[0012] Furthermore, a reinforcing plate is welded to one side of the connecting rod, and the upper end surface of the reinforcing plate is provided with connecting holes distributed along the length direction of the connecting rod, and the connecting holes are plug-connected to the hanging shaft.

[0013] Furthermore, shock-absorbing rubber pads are bonded to both the upper and lower sides of the reinforcement plate.

[0014] The beneficial effects of the utility model are as follows:

[0015] 1. The utility model further strengthens the tightness of the connection between a single pile body and the surface layer of the foundation by arranging an annular disk with anchor holes on the outside of the pile cap. A telescopic adjustment rod with hanging shafts at both ends is arranged, and then a connection hole is arranged on the annular disk, so that the adjacent pile bodies can be supported and pulled to limit the position. Compared with the prior art, the defect of the pile body tilting outward is eliminated.

[0016] 2. The utility model provides a reinforcing plate on the connecting rod and then provides a connecting hole on the reinforcing plate to facilitate the limiting of the telescopic adjustment rod, so that the relative pile body is also pulled and supported. Compared with the prior art, the range of pile body restriction is increased and the anti-tilt strength of the pile body is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a structural schematic diagram of the cast-in-place CFG pile composite foundation structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the pile body and the base layer of the cast-in-place CFG pile composite foundation structure of the utility model after separation;

[0019] Figure 3 for Figure 1 The enlarged schematic diagram of the part "a" in the middle;

[0020] In the figure: 1. foundation layer; 2. casting hole; 3. pile body; 4. pile cap; 5. annular plate; 51. anchor rod; 6. anchor hole; 61. protective rubber sleeve; 7. connecting hole; 8. telescopic adjustment rod; 81. connecting rod; 811. guide sleeve; 812. reinforcement plate; 8121. connecting hole; 8122. shock-absorbing rubber pad; 813. anti-slip thread; 82. locking bolt; 9. hanging shaft. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] See also Figures 1 to 3 The utility model provides a technical solution: a cast-in-place CFG pile composite foundation structure, including a base layer 1, a plurality of casting holes 2 are arranged on the base layer 1, and a pile body is formed in the casting holes 2 by casting. The technical solution is an improvement on the reinforcement plate and pile cap 4 in the prior art.

[0023] A pile cap 4 located above the pile body 3 is provided on the top of the foundation layer 1. When in use, the pile cap 4 is sleeved on the top of the formed pile body 3 and also includes a telescopic adjustment rod 8. The external fixed sleeve of the pile cap 4 is provided with an annular disk 5. The disk surface of the annular disk 5 is provided with anchor holes 6 and connecting holes 7 evenly distributed in the circumferential direction. The function of the anchor holes 6 is to install anchors. After a number of anchors are inserted into the foundation layer 1 through the anchor holes 6, the formed pile body 3 will be reinforced in situ.

[0024] Furthermore, the connection hole 7 is located inside the anchor hole 6, and the two ends of the telescopic adjustment rod 8 are fixedly connected with the hanging shaft 9 plugged into the connection hole 7. When in use, the adjacent and opposite pile bodies 3 can be pulled and limited by the telescopic adjustment rod 8. Specifically, after adjusting the length of the telescopic adjustment rod 8, the hanging shaft 9 can be inserted into the connection hole 7. Therefore, under the restriction of the annular disk 5 and the anchor, the connection between the single pile body 3 and the foundation 1 is more tightly, and the problem of skewness is not easy to occur. The distance between the adjacent and opposite pile bodies 3 is kept constant by limiting the telescopic adjustment rod 8, which has the advantage of greatly improving the stability of the pile body 3 compared with the prior art.

[0025] In this embodiment, the annular disk 5 is located at the bottom of the pile cap 4. Anchor rods 51 uniformly distributed circumferentially are welded to the bottom of the annular disk 5. When in use, the annular disk 5 contacts the upper surface of the foundation layer 1. The anchor rods 51 are conical and inserted into the foundation layer 1. This arrangement can improve the stability of the annular disk 5 when the anchor is knocked into the foundation layer 1 through the anchor hole 6.

[0026] Furthermore, a protective rubber sleeve 61 is embedded in the anchor hole 6, and the anchor and the protective rubber sleeve 61 are interference fit. When the anchor is knocked downward, the anchor will vibrate, and the protective rubber sleeve 61 can eliminate the vibration to prevent the vibration from being transmitted to the annular disk 5.

[0027] In this embodiment, the telescopic adjustment rod 8 includes a connecting rod 81 and a locking bolt 82. There are two connecting rods 81 and one side of the two connecting rods 81 is welded with a guide sleeve 811. The guide sleeve 811 on one connecting rod 81 is sleeved on the other connecting rod 81 and is slidably arranged. The locking bolt 82 penetrates the outer peripheral wall of the screwed guide sleeve 811 and one end thereof cooperates with one side of the connecting rod 81. One end of the connecting rod 81 is welded and connected to the hanging shaft 9. When the two connecting rods 81 move alternately, the length of the telescopic adjustment rod 8 can be changed. When the locking bolt 82 is tightened, one end of the locking bolt 82 will press against the adjacent connecting rod 81. At this time, the distance between the hanging shafts 9 at both ends of the telescopic adjustment rod 8 is fixed. One side of the connecting rod 81 is provided with an anti-skid thread 813 opposite to the locking bolt 82. The anti-skid thread 813 can increase the friction between the locking bolt 82 and the connecting rod 81.

[0028] Furthermore, a reinforcing plate 812 is welded to one side of the connecting rod 81, and the upper end surface of the reinforcing plate 812 is provided with connecting holes 8121 distributed along the length direction of the connecting rod 81. For example, in the pile body 3 located at the corner of the quadrilateral, the relative pile bodies 3 can be connected by a telescopic adjustment rod 8, so that the four pile bodies 3 and the telescopic adjustment rod 8 form a frame containing two triangles. The connecting holes 8121 are also used to install anchor nails, so that the telescopic adjustment rod 8 and the foundation layer 1 are firmly connected.

[0029] In this embodiment, shock-absorbing rubber pads 8122 are bonded to the upper and lower sides of the reinforcing plate 812. The function of the shock-absorbing rubber pads 8122 is to cushion the impact of the striking tool. In other words, the striking tool is likely to strike the reinforcing plate 812 during the striking process.

[0030] Working principle: Take the four pile bodies 3 located at the four corners of a square as an example. After the pile body 3 is cast, the pile cap 4 is set on the top of the pile body 3, and then the locking bolt 82 is loosened, and the hanging shaft 9 is inserted into the connecting hole 7 to achieve the connection between adjacent pile bodies 3. The two opposite pile bodies 3 are connected by a telescopic adjustment rod 8, and the locking bolt 82 is tightened to achieve the connection between the telescopic adjustment rod 8 and the pile body 3. Then, insert the anchor nail into the protective rubber sleeve 61, and knock the anchor nail so that the annular disk 5 and the foundation 1 around the pile body 3 are in a fastened connection state. At this time, the pile column 3 is in an all-round restricted state, and the anti-tilting ability is greatly improved. It should be noted that the anchor nail can also be installed first, and then the telescopic adjustment rod 8 is installed.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A cast-in-place CFG pile composite foundation structure, comprising a base layer (1), wherein the base layer (1) is provided with a plurality of casting holes (2), wherein a pile body (3) is formed in the casting holes (2) after casting, and a pile cap (4) located above the pile body (3) is provided on the top of the base layer (1), wherein the pile cap (4) is characterized in that: The pile cap (4) further comprises a telescopic adjustment rod (8), the outer fixed sleeve of which is provided with an annular disk (5), the disk surface of which is provided with anchor holes (6) and connection holes (7) evenly distributed in the circumferential direction, the connection holes (7) being located inside the anchor holes (6), and the two ends of the telescopic adjustment rod (8) being fixedly connected with hanging shafts (9) which are plugged and matched with the connection holes (7).

2. The cast-in-place CFG pile composite foundation structure according to claim 1, characterized in that: The annular disk (5) is located at the bottom of the pile cap (4), and anchor rods (51) uniformly distributed in the circumferential direction are welded to the bottom of the annular disk (5).

3. The cast-in-place CFG pile composite foundation structure according to claim 1, characterized in that: A protective rubber sleeve (61) is nested in the anchor hole (6).

4. The cast-in-place CFG pile composite foundation structure according to claim 1, characterized in that: The telescopic adjustment rod (8) comprises a connecting rod (81) and a locking bolt (82). There are two connecting rods (81) and one side of each of the two connecting rods (81) is welded with a guide sleeve (811). The guide sleeve (811) on one connecting rod (81) is sleeved on the other connecting rod (81) and is slidably arranged. The locking bolt (82) passes through the outer peripheral wall of the screwed guide sleeve (811) and one end of the locking bolt (82) is matched with one side of the connecting rod (81). One end of the connecting rod (81) is welded to the hanging shaft (9).

5. The cast-in-place CFG pile composite foundation structure according to claim 4, characterized in that: One side of the connecting rod (81) is provided with an anti-slip thread (813) opposite to the locking bolt (82).

6. The cast-in-place CFG pile composite foundation structure according to claim 4, characterized in that: A reinforcing plate (812) is welded to one side of the connecting rod (81), and the upper end surface of the reinforcing plate (812) is provided with connecting holes (8121) distributed along the length direction of the connecting rod (81), and the connecting holes (8121) are plug-connected to the hanging shaft (9).

7. The cast-in-place CFG pile composite foundation structure according to claim 6, characterized in that: Shock-absorbing rubber pads (8122) are bonded to both the upper and lower sides of the reinforcing plate (812).

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