Precast pile cap

Abstract

The utility model discloses a precast pile cap which comprises a rectangular pile cap arranged on a concrete square pile body, and the top of the concrete square pile body penetrates into the rectangular pile cap. By means of the designed connecting mechanism, the end of the inserting block on the movable transverse column is inserted into the clamping groove in the concrete square pile body in the using process, and when pile sinking equipment drives a rectangular pile cap into the ground, the rectangular pile cap is inserted into the clamping groove due to the fact that the end of the inserting block is inserted into the clamping groove; force generated by pile sinking equipment when the rectangular pile cap is driven into the ground can be dispersed into the corresponding clamping grooves through the inserting blocks, so that the force is dispersed to the middle position of the concrete square pile body, and the situation that when pile driving is conducted through traditional pile sinking equipment, an L-shaped anti-skid rubber strip abuts against the outer wall of the concrete square pile body, and then the L-shaped anti-skid rubber strip moves downwards is avoided; and the force dispersed on the concrete square pile main body by the rectangular square pile is uniform, and the pile sinking effect of the rectangular pile cap on the concrete square pile main body is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pile caps, and in particular relates to a prefabricated pile cap. Background Art

[0002] Precast piles are piles of various materials and forms made in factories or construction sites. The piles are driven, pressed or vibrated into the soil using pile driving equipment. Concrete square piles are a type of precast pile and are often used in foundation construction. During pile foundation construction, precast concrete square piles need to be driven into the ground. However, in order to prevent the top of the concrete square pile from being damaged, a pile cap needs to be installed on the top of the square pile. The pile cap can provide a certain degree of protection for the top of the precast square pile.

[0003] A precast concrete square pile cap is disclosed in Chinese patent application No. 202223566369.8. The patent installs a rectangular pile cap on the top of the precast pile, and then drives the concrete square pile into the ground through pile driving equipment. The patent can disperse the force concentrated on the upper surface of the concrete square pile to a certain extent, so as to avoid the top of the concrete square pile from being broken. The rectangular pile cap is provided with a rectangular plate inside the rectangular pile cap. The side of the L-shaped anti-skid rubber strip on the connecting pad provided on the rectangular plate abuts against the outer wall of the concrete square pile. The friction between the L-shaped anti-skid rubber strip and the outer wall of the concrete square pile body disperses the force generated by the rectangular pile cap during use. To the outer wall of the concrete square pile, but in use, the rectangular pile cap is only fixed on the concrete square pile by the friction force generated by the contact between the L-shaped anti-skid rubber strip and the outer wall of the concrete square pile. Since the L-shaped anti-skid rubber strip has relatively soft performance, the contact connection between the L-shaped anti-skid rubber strip and the outer wall of the concrete square pile is unstable. When the rectangular pile cap is driven into the ground by a large force of the pile driving equipment, the rectangular pile cap is still prone to move downward. Finally, the force generated by the pile driving equipment during pile driving is still transmitted to the top of the concrete square pile, causing damage to the top of the concrete square pile, affecting the pile driving effect of the rectangular pile cap on the concrete square pile. For this reason, we propose a prefabricated pile cap. Utility Model Content

[0004] The utility model aims to provide a prefabricated pile cap to solve the problem that the rectangular pile cap proposed in the above-mentioned background technology is fixed on the concrete square pile only by the friction force generated by the abutment between the L-shaped anti-skid rubber strip and the outer wall of the concrete square pile. The abutment connection between the L-shaped anti-skid rubber strip and the outer wall of the concrete square pile is unstable. When the rectangular pile cap is driven into the ground by the pile driving equipment, the rectangular pile cap is still prone to move downward. Finally, the force generated by the pile driving equipment during pile driving is still transmitted to the top of the concrete square pile, causing damage to the top of the concrete square pile.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a prefabricated pile cap, comprising a rectangular pile cap arranged on a concrete square pile body, the top of the concrete square pile body penetrates into the interior of the rectangular pile cap, two groups of connection mechanisms are arranged around the rectangular pile cap and between the concrete square pile body, the connection mechanism comprises a movable cross column and a side block, a vertical stud is fixedly arranged on the top of one end of the movable cross column, a movable groove is provided inside the side block, the top of the vertical stud passes through the interior of the movable groove, an insertion block is fixedly arranged on the other end of the movable cross column, two groups of clamping grooves are provided on the surfaces around the top of the concrete square pile body, the ends of the clamping grooves penetrate into the interior of the clamping grooves, and locking members for fixing the vertical studs are arranged on the outside of the vertical studs.

[0006] Preferably, two groups of through grooves are provided on the four sides of the rectangular pile cap, and the ends of the movable cross columns pass through the interior of the through grooves.

[0007] Preferably, a support column is fixedly provided on the top of the other end of the movable horizontal column, and the top of the support column is in contact with the top of the inner wall of the rectangular pile cap.

[0008] Preferably, the locking member comprises an upper nut and a lower nut, the upper nut, the lower nut and the side block are all connected via threads, and the upper nut and the lower nut are respectively located at the top and bottom of the side block.

[0009] Preferably, a protective steel plate is provided on the top of the rectangular pile cap, and the bottom of the protective steel plate is in contact with the top of the rectangular pile cap.

[0010] Preferably, vertical plates are fixedly provided on the front and back sides of the protective steel plate, and the vertical plates are fixedly connected to the rectangular pile caps by bolts.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) The utility model adopts a connection mechanism designed so that, during use, the end of the plug block on the movable cross column is inserted into the slot on the concrete square pile body. When the pile driving equipment drives the rectangular pile cap into the ground, the end of the plug block is inserted into the slot. The force generated by the pile driving equipment on driving the rectangular pile cap into the ground can be dispersed into the corresponding slot through the plug block, and then dispersed to the middle position of the concrete square pile body. This avoids the situation in which the L-shaped anti-skid rubber strip abuts against the outer wall of the concrete square pile body and then moves downward when the pile is driven by the conventional pile driving equipment, so that the force dispersed from the rectangular square pile to the concrete square pile body is uniform, thereby improving the pile driving effect of the rectangular pile cap on the concrete square pile body.

[0013] (2) The utility model has designed protective steel plates, vertical plates and bolts. When the protective steel plates are installed on the top of the rectangular pile cap, the pile driving equipment contacts the protective steel plates, thereby reducing the direct contact between the pile driving equipment and the upper surface of the rectangular pile cap. The upper surface of the rectangular pile cap is affected by the impact of the pile driving equipment and is deformed and damaged, thereby improving the service life of the rectangular pile cap. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the movable horizontal column and side blocks of the utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the rectangular pile cap and the concrete square pile body of the utility model when viewed from above;

[0017] Figure 4 This is a schematic diagram of a rectangular pile cap structure of the utility model;

[0018] Figure 5 This is a schematic diagram of the main structure of the concrete square pile of the utility model;

[0019] In the figure: 100, concrete square pile body; 101, rectangular pile cap; 200, through groove; 201, movable horizontal column; 202, vertical stud; 203, side block; 204, upper nut; 205, movable groove; 206, lower nut; 207, support column; 208, plug block; 209, slot; 300, protective steel plate; 301, vertical plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example 1

[0022] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The utility model provides a technical solution: a prefabricated pile cap, comprising a rectangular pile cap 101 arranged on a concrete square pile body 100, the top of the concrete square pile body 100 penetrates into the interior of the rectangular pile cap 101, and two sets of connecting mechanisms are arranged around the rectangular pile cap 101 and between the concrete square pile body 100, the connecting mechanism comprises a movable horizontal column 201 and a side block 203, when in use, the movable horizontal column 201 can move in the through groove 200, a vertical stud 202 is fixedly arranged on the top of one end of the movable horizontal column 201, a movable groove 205 is opened inside the side block 203, the vertical stud 202 moves in the movable groove 205 when moving, the top of the vertical stud 202 passes through the interior of the movable groove 205, and the movable horizontal column 201 can move in the through groove 200. 01 is fixedly provided with an insert block 208 at the other end, and two groups of slots 209 are provided on the four sides of the top of the concrete square pile body 100. When pouring the concrete square pile body 100, a protrusion is installed in advance at the position where the slot 209 needs to be opened. When the pouring is completed, the slot 209 is formed. When the concrete square pile body 100 is driven into the ground by the pile sinking equipment and the rectangular pile cap 101 is removed, concrete is filled into the slot 209 to block the slot 209 to prevent the slot 209 from affecting the use of the concrete square pile body 100 in the later stage. The insert block 208 can be inserted into the corresponding slot 209, and the end of the slot 209 is inserted into the interior of the slot 209. The outside of the vertical stud 202 is provided with a locking piece for fixing the vertical stud 202;

[0023] Two sets of through slots 200 are formed on the four sides of the rectangular pile cap 101, and the ends of the movable crossbars 201 pass through the interior of the through slots 200;

[0024] A support column 207 is fixedly provided on the top of the other end of the movable horizontal column 201. When in use, when the rectangular pile cap 101 is subjected to the downward force of the pile driving equipment, part of the force will be transmitted to the support column 207, and the force will be transmitted to the plug 208 through the support column 207. The top of the support column 207 contacts the top of the inner wall of the rectangular pile cap 101.

[0025] Example 2

[0026] Based on Example 1, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The locking member includes an upper nut 204 and a lower nut 206, which are all connected to the side block 203 through threads, and the upper nut 204 and the lower nut 206 are respectively located at the top and the bottom of the side block 203. After tightening the upper nut 204 and the lower nut 206, the vertical stud 202 and the side block 203 can be connected and fixed together.

[0027] The utility model adopts a designed connection mechanism. In use, the end of the plug block 208 on the mobile cross column 201 is inserted into the slot 209 on the concrete square pile body 100. When the pile driving equipment drives the rectangular pile cap 101 into the ground, the end of the plug block 208 is inserted into the slot 209. The force generated by the pile driving equipment on the rectangular pile cap 101 into the ground can be dispersed into the corresponding slot 209 through the plug block 208, and then dispersed to the middle position of the concrete square pile body 100, thereby avoiding the situation in which the L-shaped anti-skid rubber strip moves downward after contacting the outer wall of the concrete square pile body 100 when the pile is driven by the conventional pile driving equipment, so that the force dispersed by the rectangular square pile to the concrete square pile body 100 is uniform, and the pile driving effect of the rectangular pile cap 101 on the concrete square pile body 100 is improved.

[0028] Example 3

[0029] Based on Example 2, please refer to Figure 1 , Figure 2 and Figure 3 , a protective steel plate 300 is provided on the top of the rectangular pile cap 101, and the bottom of the protective steel plate 300 is in contact with the top of the rectangular pile cap 101;

[0030] Vertical plates 301 are fixedly provided on the front and back of the protective steel plate 300. The vertical plates 301 are fixedly connected to the rectangular pile cap 101 by bolts. The protective steel plate 300 can be disassembled and assembled by bolts, and a damaged protective steel plate 300 can be replaced.

[0031] The utility model uses a designed protective steel plate 300, a vertical plate 301 and bolts. When the protective steel plate 300 is installed on the top of the rectangular pile cap 101 during use, the prefabricated piles are driven by the pile driving equipment and come into contact with the protective steel plate 300, thereby reducing the direct contact between the pile driving equipment and the upper surface of the rectangular pile cap 101. The upper surface of the rectangular pile cap 101 is affected by the impact of the pile driving equipment and is deformed and damaged, thereby improving the service life of the rectangular pile cap 101.

[0032] The working principle and use process of this utility model:

[0033] When the utility model is in use, the rectangular pile cap 101 is placed at the top position of the concrete square pile body 100, and the ends of the multiple plug blocks 208 on the connecting mechanism are aligned with the corresponding slots 209 on the concrete square pile body 100, and then the movable horizontal column 201 is moved in the direction close to the slot 209, and at the same time, the support column 207, the plug block 208 and the vertical stud 202 are driven to move, and the vertical stud 202 drives the upper nut 204 and the lower nut 206 to move. At this time, the vertical stud 202 will move in the movable groove 205, and then the end of the plug block 208 will penetrate into the interior of the slot 209, and at this time, the upper nut 204 and the lower nut 206 are respectively moved in opposite directions. The rectangular pile cap 101 is then connected and fixed to the concrete square pile body 100 by rotating and tightening. Then, the prefabricated concrete square pile body 100 is driven into the ground by the pile sinking equipment, and a downward force is generated on the rectangular pile cap 101. At this time, a part of the force is directly transmitted to the top of the concrete square pile body 100 through the rectangular pile cap 101, and another part of the force is transmitted to the corresponding card slot 209 in the concrete square pile body 100 through the plug block 208 on the connecting mechanism, thereby being dispersed into the concrete square pile body 100. After the concrete square pile body 100 is driven into the ground, the rectangular pile cap 101 can be removed according to the reverse principle mentioned above.

[0034] Before the concrete square pile body 100 is driven into the ground by the pile driving equipment, the protective steel plate 300 is placed at a suitable position above the rectangular pile cap 101. At this time, the vertical plate 301 on the protective steel plate 300 is fixed to the rectangular pile cap 101 by bolts. Then, when the concrete square pile body 100 is driven into the ground by the pile driving equipment, it will contact the surface of the protective steel plate 300 on the top of the rectangular pile cap 101. The protective steel plate 300 is used for protection to prevent the pile driving equipment from directly contacting the surface of the rectangular pile cap 101 and causing deformation and damage to it.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A prefabricated pile cap, comprising a rectangular pile cap (101) arranged on a concrete square pile body (100), wherein the top of the concrete square pile body (100) penetrates into the interior of the rectangular pile cap (101), characterized in that: Two groups of connection mechanisms are arranged around the rectangular pile cap (101) and between the concrete square pile body (100), and the connection mechanisms include a movable horizontal column (201) and a side block (203). A vertical stud (202) is fixedly arranged on the top of one end of the movable horizontal column (201), a movable groove (205) is provided inside the side block (203), and the top of the vertical stud (202) passes through the inside of the movable groove (205). An insert block (208) is fixedly arranged on the other end of the movable horizontal column (201). Two groups of slots (209) are arranged on the top and around the surface of the concrete square pile body (100), and the ends of the slots (209) pass into the inside of the slots (209). A locking piece for fixing the vertical stud (202) is provided outside the vertical stud (202).

2. The prefabricated pile cap according to claim 1, characterized in that: Two groups of through slots (200) are provided on the four sides of the rectangular pile cap (101), and the ends of the movable cross columns (201) pass through the interior of the through slots (200).

3. The prefabricated pile cap according to claim 2, characterized in that: A support column (207) is fixedly arranged on the top of the other end of the movable horizontal column (201), and the top of the support column (207) is in contact with the top of the inner wall of the rectangular pile cap (101).

4. The prefabricated pile cap according to claim 3, characterized in that: The locking member comprises an upper nut (204) and a lower nut (206); the upper nut (204), the lower nut (206) and the side block (203) are all connected via threads, and the upper nut (204) and the lower nut (206) are respectively located at the top and bottom of the side block (203).

5. The prefabricated pile cap according to claim 1, characterized in that: A protective steel plate (300) is provided on the top of the rectangular pile cap (101), and the bottom of the protective steel plate (300) is in contact with the top of the rectangular pile cap (101).

6. The prefabricated pile cap according to claim 5, characterized in that: Vertical plates (301) are fixedly arranged on the front and back sides of the protective steel plate (300), and the vertical plates (301) are fixedly connected to the rectangular pile cap (101) by bolts.

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