Pile cap structure

Abstract

The utility model relates to the field of pile foundation construction, in particular to a pile cap structure which is characterized in that a pile cap body comprises an upper-layer annular plate, vertical rods and a lower-layer annular plate, the upper-layer annular plate is connected with the lower-layer annular plate through the vertical rods, a top plate is arranged at the top of the upper-layer annular plate, a protective basket is detachably connected to the top plate, and a hanging ring is arranged on the protective basket. The working platform is connected with the lower-layer annular plate, at least one vertical rod is provided with a lifting strip set, in the operation implementation process, the pile cap body is arranged on a pile foundation in a sleeving mode, and the protective basket is arranged at the top of the pile cap body, so that a space for an operator to conduct auxiliary operation at the top of the pile cap body can be provided for the operator; meanwhile, the safety of operators during operation at the top of the pile foundation can be protected, an operation area is provided at the bottom of the pile cap main body by arranging the operation platform, the operators can conveniently carry out auxiliary operation and the like at the middle lower part of the pile foundation, and the ladder stand is formed by a plurality of ladder strips which are vertically arranged at intervals; therefore, operators can conveniently move from the protective basket to the working platform through the ladder strips, and the working face is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of pile cap construction, in particular to a pile cap structure. Background Art

[0002] A pile cap is a concrete or steel component installed on the top of a pile to protect the top of the pile from erosion and damage by the external environment. It can provide waterproofing, corrosion resistance, and increase the bearing capacity of the pile top. The pile cap is usually cast in concrete but can also be made of steel. The design and construction of the pile cap needs to consider factors such as the type of pile, load requirements, and environmental conditions to ensure its stability and durability.

[0003] In the construction of port terminals, pile caps are important connecting parts between pile foundations and upper beam and slab structures. Traditional pile foundation terminals generally use cast-in-place pile caps to cover pile foundations and can well adapt to the deviation of pile foundation sinking. However, cast-in-place pile caps are often accompanied by a large number of bottom formworks and side formworks for fixing, installing and removing, and the construction cost is relatively high. At present, steel pile caps are often used. For example, a Chinese patent with patent publication number CN214783821U discloses a steel pipe pile cap and a steel pipe pile combination structure, which covers the steel pile cap on the top of the steel pipe pile. However, in the actual operation process, operators are often required to perform other auxiliary operations on the pile caps, such as reinforcing the middle and lower parts of the pile foundation or connecting rods between adjacent pile foundations, etc., and most of the pile caps currently do not have the conditions for operators to perform auxiliary operations. Utility Model Content

[0004] The invention purpose of the utility model is to provide a pile cap structure in view of the problem that most of the pile caps in the background technology are often not suitable for operators to perform auxiliary operations.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A pile cap structure comprises a guard basket, a pile cap body and a working platform connected in sequence from top to bottom, wherein the pile cap body is provided with at least one lifting bar group, the lifting bar group comprises a plurality of ladder bars, and adjacent ladder bars in the same lifting bar group are arranged vertically at intervals.

[0007] The pile cap structure described in the utility model includes a guard basket, a pile cap body and a working platform connected in sequence from top to bottom. During the implementation of the operation, the pile cap body is put on the pile foundation. By arranging the guard basket on the top of the pile cap body, space can be provided for the operators to perform auxiliary operations on the top of the pile cap body, and the safety of the operators when working on the top of the pile foundation can also be protected. By arranging the working platform, a working area is provided at the bottom of the pile cap body, which is convenient for the operators to perform auxiliary operations in the middle and lower parts of the pile foundation, etc., and at least one lifting bar group is arranged on the pile cap body, and the lifting bar group includes a plurality of ladder bars. Adjacent ladder bars in the same lifting bar group are arranged vertically at intervals. A ladder is formed by the ladder bars arranged vertically at intervals, so that the operators can move from the guard basket to the working platform through the ladder bars to make the working surface wider.

[0008] As a preferred embodiment of the utility model, the pile cap body includes an upper annular plate, a vertical rod and a lower annular plate, the upper annular plate is connected to the lower annular plate through the vertical rod, a top plate is arranged on the top of the upper annular plate, the guard basket is detachably connected to the top plate, a lifting ring is arranged on the guard basket, the working platform is connected to the lower annular plate, and the lifting bar group is arranged on at least one of the vertical rods.

[0009] The pile cap body comprises an upper annular plate, a vertical rod and a lower annular plate, the upper annular plate is connected to the lower annular plate by the vertical rod, and a top plate is arranged on the top of the upper annular plate. Compared with the traditional use of a long steel pipe as a pile cap, the weight of the pile cap body is effectively reduced; the guard basket is detachably connected to the top plate, and a lifting ring is arranged on the guard basket. When the pile cap structure described in the utility model is hoisted, the lifting ring on the guard basket can be used as a hoisting point to avoid directly hoisting the pile cap body, thereby protecting the pile cap body structure. At the same time, since the guard basket is detachably connected to the top plate of the upper annular plate, it is convenient for the operator to disassemble the guard basket after completing the work; the working platform is connected to the lower annular plate, thereby providing a working area at the bottom of the pile cap body, which is convenient for the operator to perform auxiliary work in the middle and lower part of the pile foundation, etc., and a lifting bar group is arranged on at least one vertical rod, so that at least one vertical rod has ladder bars arranged at vertical intervals, so that at least one vertical rod has the effect of climbing a ladder.

[0010] As a preferred solution of the utility model, it also includes a fastening device, which is arranged along the circumference of the upper annular plate and is used to fix the pile cap body on the pile foundation. Fixing the pile foundation by the fastening device facilitates the installation of the pile cap body on the pile foundation.

[0011] As a preferred solution of the utility model, the fastening device includes a fastening bolt and a fastening nut, the fastening nut is arranged along the circumference of the upper annular plate, the fastening bolt is threadedly matched with the fastening nut, and the end of the fastening bolt passes through the upper annular plate, and the fastening bolt is used to abut and fix the pile foundation. The pile cap body is fixed on the pile foundation by tightening the fastening bolt, which effectively improves the assembly efficiency of the pile cap structure.

[0012] As a preferred solution of the utility model, the fastening device further comprises a first strip plate, which is located inside the upper annular plate and connected to the end of the fastening bolt. The first strip plate is provided to increase the contact area between the fastening bolt and the pile foundation, thereby increasing the contact area between the fastening bolt and the concrete, and achieving a better fixing effect of the fastening bolt.

[0013] As a preferred solution of the utility model, it also includes a connecting device, which is arranged along the circumference of the pile cap body, and the connecting device includes a connecting bolt, and the connecting bolt can rotate horizontally relative to the pile cap body. By setting the connecting device, the connecting device includes a connecting bolt, so that it is convenient for subsequent auxiliary components to be connected to the pile cap body through the connecting bolt. Further, the connecting bolt can rotate horizontally relative to the pile cap body, so that when the subsequent auxiliary components are connected to the pile cap body, the angle of the auxiliary components in the horizontal direction can be adjusted through the connecting bolt, so that the connection between the auxiliary components and the pile cap body is more convenient.

[0014] As a preferred solution of the utility model, the connection device further comprises a fixing plate and a pin shaft, two fixing plates are arranged on the pile cap body at intervals, the connecting bolt is installed between the two fixing plates, and the pin shaft penetrates the fixing plate and the connecting bolt. The connecting bolt is installed between the two fixing plates through the pin shaft so that the connecting bolt can rotate horizontally around the pin shaft.

[0015] As a preferred solution of the utility model, the connecting bolt includes a screw rod and a rotating plate connected to each other, the rotating plate is installed between the two fixed plates, and the pin shaft passes through the fixed plate and the rotating plate.

[0016] As a preferred solution of the utility model, the connecting device is arranged on the upper annular plate, and / or the connecting device is arranged on the lower annular plate.

[0017] As a preferred solution of the utility model, a plurality of reinforcing hoops are vertically spaced apart between the vertical rods.

[0018] As a preferred solution of the utility model, the working platform includes an annular member and a reinforcing rod, the reinforcing rod is arranged along the circumference of the lower annular plate, one end of the reinforcing rod is connected to the lower annular plate, and the other end of the reinforcing rod is connected to the annular member, and a circular plate is laid on the top of the annular member and the reinforcing rod.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0020] 1. The pile cap structure described in the utility model includes a guard basket, a pile cap body and a working platform connected in sequence from top to bottom. During the implementation of the operation, the pile cap body is put on the pile foundation. By arranging the guard basket on the top of the pile cap body, a space for the operators to perform auxiliary operations on the top of the pile cap body can be provided, and the safety of the operators when working on the top of the pile foundation can also be protected. By arranging the working platform, a working area is provided at the bottom of the pile cap body, which is convenient for the operators to perform auxiliary operations in the middle and lower parts of the pile foundation, etc., and at least one lifting bar group is arranged on the pile cap body, and the lifting bar group includes a plurality of ladder bars. Adjacent ladder bars in the same lifting bar group are arranged vertically at intervals. A ladder is formed by the ladder bars arranged vertically at intervals, so that it is convenient for the operators to move from the guard basket to the working platform through the ladder bars, so that the working surface is wider.

[0021] 2. The pile cap structure described in the utility model comprises an upper annular plate, a vertical rod and a lower annular plate, the upper annular plate is connected to the lower annular plate by the vertical rod, and a top plate is arranged on the top of the upper annular plate, which effectively reduces the weight of the pile cap body compared with the traditional use of a long steel pipe as a pile cap; the guard basket is detachably connected to the top plate, and a lifting ring is arranged on the guard basket. When the pile cap structure described in the utility model is hoisted, the lifting ring on the guard basket can be used as a hoisting point to avoid directly hoisting the pile cap body, thereby protecting the pile cap body structure. At the same time, since the guard basket is detachably connected to the top plate of the upper annular plate, it is convenient for the operator to disassemble the guard basket after completing the work; the working platform is connected to the lower annular plate, thereby providing a working area at the bottom of the pile cap body, which is convenient for the operator to perform auxiliary work in the middle and lower part of the pile foundation, etc., and at least one vertical rod is provided with a lifting bar group, so that at least one vertical rod has ladder bars arranged at intervals vertically, so that at least one vertical rod has the effect of climbing a ladder. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model.

[0023] Figure 2 yes Figure 1 A partial enlarged view of point B.

[0024] Figure 3 It is a schematic diagram of a connecting device of the present utility model.

[0025] Figure 4 yes Figure 1 Sectional view at AA.

[0026] Markings in the figure: 1-guard basket, 11-rail, 12-guard basket annular rod, 13-lifting ring, 14-guard basket bottom plate, 15-guard basket connecting bolt, 2-pile cap body, 21-upper annular plate, 22-vertical rod, 23-lower annular plate, 24-reinforcement hoop, 25-top plate, 3-working platform, 31-annular member, 32-reinforcement rod, 33-circular plate, 4-lifting bar group, 41-ladder bar, 5-fastening device, 51-fastening bolt, 52-fastening nut, 53-first strip plate, 6-connecting device, 61-connecting bolt, 611-screw, 612-rotating plate, 62-fixed plate, 63-pin shaft, 64-connecting nut, 7-pile foundation. DETAILED DESCRIPTION

[0027] The utility model is described in detail below in conjunction with the accompanying drawings.

[0028] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0029] Example 1

[0030] like Figure 1 As shown, a pile cap structure described in this embodiment includes a guard basket 1, a pile cap body 2 and a working platform 3 connected in sequence from top to bottom, and at least one lifting bar group 4 is arranged on the pile cap body 2, and the lifting bar group 4 includes a plurality of ladder bars 41, and adjacent ladder bars 41 in the same lifting bar group 4 are vertically spaced.

[0031] The pile cap structure described in this embodiment includes a protective basket 1, a pile cap body 2 and a working platform 3 connected in sequence from top to bottom. During the operation, the pile cap body 2 is placed on the pile foundation 7. By arranging the protective basket 1 on the top of the pile cap body 2, a space can be provided for the operators to perform auxiliary operations on the top of the pile cap body 2, and the safety of the operators when working on the top of the pile foundation 7 can also be protected. By arranging the working platform 3, a working area is provided at the bottom of the pile cap body 2, which is convenient for the operators to perform auxiliary operations in the middle and lower parts of the pile foundation 7, etc., and at least one lifting bar group 4 is provided on the pile cap body 2. The lifting bar group 4 includes a plurality of ladder bars 41. Adjacent ladder bars 41 in the same lifting bar group 4 are arranged vertically at intervals, and a ladder is formed by the ladder bars 41 arranged vertically at intervals, so that the operators can move from the protective basket 1 to the working platform 3 through the ladder bars 41 to make the working surface wider.

[0032] like Figure 1As shown, the pile cap body 2 includes an upper annular plate 21, a vertical rod 22 and a lower annular plate 23, the upper annular plate 21 is connected to the lower annular plate 23 through the vertical rod 22, a top plate 25 is provided on the top of the upper annular plate 21, the guard basket 1 is detachably connected to the top plate 25, a lifting ring 13 is provided on the guard basket 1, the working platform 3 is connected to the lower annular plate 23, and the lifting bar group 4 is provided on at least one of the vertical rods 22.

[0033] The pile cap body 2 includes an upper annular plate 21, a vertical rod 22 and a lower annular plate 23. The upper annular plate 21 is connected to the lower annular plate 23 through the vertical rod 22. A top plate 25 is arranged on the top of the upper annular plate 21. Compared with the traditional use of a long steel pipe as a pile cap, the weight of the pile cap body 2 is effectively reduced; the guard basket 1 is detachably connected to the top plate 25, and the guard basket 1 is provided with a lifting ring 13. When the pile cap structure described in this embodiment is hoisted, the lifting ring 13 on the guard basket 1 can be used as a hoisting point to avoid directly hoisting the pile cap body 2, thereby protecting the pile cap structure. The cap body 2 has a structure. At the same time, since the protective basket 1 is detachably connected to the top plate 25 of the upper annular plate 21, it is convenient to disassemble the protective basket 1 after the operator completes the operation; the working platform 3 is connected to the lower annular plate 23, thereby providing a working area at the bottom of the pile cap body 2, which is convenient for the operator to perform auxiliary operations in the middle and lower part of the pile foundation 7, etc., and at least one vertical rod 22 is provided with a lifting bar group 4, so that at least one vertical rod 22 has ladder bars 41 arranged at vertical intervals, so that at least one vertical rod 22 has the effect of climbing a ladder.

[0034] A preferred method is as follows Figure 1 , Figure 2 As shown, it also includes a fastening device 5, which is arranged circumferentially along the upper annular plate 21. The fastening device 5 is used to fix the pile cap body 2 on the pile foundation 7. After the pile cap body 2 is sleeved on the pile foundation 7, the pile foundation 7 is fixed by the fastening device 5, thereby facilitating the installation of the pile cap body 2 on the pile foundation 7, thereby improving the installation efficiency of the pile cap body 2.

[0035] A preferred method is as follows Figure 2 As shown, the fastening device 5 includes a fastening bolt 51 and a fastening nut 52. Figure 1 As shown, the fastening nut 52 is arranged along the circumference of the upper annular plate 21, the fastening bolt 51 is threadedly matched with the fastening nut 52, and the end of the fastening bolt 51 passes through the upper annular plate 21, and the fastening bolt 51 is used to abut and fix the pile foundation 7. By tightening the fastening bolt 51, the end of the fastening bolt 51 abuts the pile foundation 7, and the pile cap body 2 is fixed on the pile foundation 7 by tightening the fastening bolt 51 to prevent displacement, which effectively improves the assembly efficiency of the pile cap structure;

[0036] Furthermore, the fastening nuts 52 are arranged in multiple rows along the circumference of the upper annular plate 21, and each row has no less than 3 fastening nuts 52, all of which are arranged vertically.

[0037] A preferred method is as follows Figure 2 As shown, the fastening device 5 also includes a first strip plate 53, which is located inside the upper annular plate 21 and is connected to the end of the fastening bolt 51. The first strip plate 53 is provided to increase the contact area between the fastening bolt 51 and the pile foundation 7, thereby increasing the contact area between the fastening bolt 51 and the concrete, thereby improving the fixing effect of the fastening bolt 51.

[0038] A preferred method is as follows Figure 1 As shown, at least four vertical rods 22 are arranged between the upper annular plate 21 and the lower annular plate 23. Furthermore, a plurality of reinforcing hoops 24 are arranged at vertical intervals between the vertical rods 22, thereby reinforcing the vertical rods 22, and thus making the pile cap body 2 more solid. Furthermore, the diameter of the upper annular plate 21 and the lower annular plate 23 are the same. In the pile cap structure described in this embodiment, the structure of the pile cap body 2 is similar to a cylinder, which is easy to install and can realize modular assembly without the need for on-site construction. Furthermore, since the upper annular plate 21 and the lower annular plate 23 are connected by vertical rods 22, compared with the traditional use of sleeves, the weight of the pile cap body 2 is greatly reduced, the processing and manufacturing cost is low, and the hoisting is convenient.

[0039] like Figure 1-Figure 2 As shown, the guard basket 1 includes a plurality of circularly arranged railings 11, a plurality of guard basket circumferential rods 12 are vertically spaced between the railings 11, and a guard basket bottom plate 14 is connected to the bottom of the railings 11. When the guard basket 1 is connected to the pile cap body 2, the guard basket bottom plate 14 is placed on the top plate 25 of the pile cap body 2, and the guard basket bottom plate 14 is connected to the top plate 25 of the pile cap body 2 by the guard basket connecting bolts 15, or the guard basket bottom plate 14 and the top plate 25 of the pile cap body 2 can also be connected by a pin shaft, etc.;

[0040] Furthermore, a lifting ring 13 is provided on the railing 11 of the guard basket 1. When the pile cap structure of this embodiment needs to be lifted, the lifting ring 13 is selected as the lifting point to avoid directly lifting the pile cap body 2, thereby protecting the pile cap body 2 structure.

[0041] like Figure 1 , Figure 4 As shown, the working platform 3 includes an annular member 31 and a reinforcing rod 32. The reinforcing rod 32 is arranged along the circumference of the lower annular plate 23. One end of the reinforcing rod 32 is connected to the lower annular plate 23, and the other end of the reinforcing rod 32 is connected to the annular member 31. A circular plate 33 is laid on the top of the annular member 31 and the reinforcing rod 32. The reinforcing rod 32 is connected to the lower annular plate 23 by welding, and the reinforcing rod 32 is connected to the annular member 31 by welding.

[0042] Furthermore, the top of the annular member 31 is flush with the top of the reinforcing rod 32 , and the circular plate 33 is a steel plate welded to the annular member 31 and the reinforcing rod 32 .

[0043] A preferred method is as follows Figure 4 As shown, the working platform 3 includes an annular member 31 and a reinforcing rod 32. The reinforcing rod 32 is arranged along the circumference of the lower annular plate 23. One end of the reinforcing rod 32 is connected to the lower annular plate 23, and the other end of the reinforcing rod 32 is connected to the annular member 31. A circular plate 33 is laid on the top of the annular member 31 and the reinforcing rod 32.

[0044] In a preferred manner, the upper annular plate 21 is made of a steel plate rolled into a circle, the thickness of which is not less than 16 cm, and the height of which is not less than 30 cm. Furthermore, the top plate 25 is a steel plate welded to the top of the upper annular plate 21 .

[0045] In a preferred manner, the lower annular plate 23 is made of a steel plate rolled into a circular shape, with a plate thickness of not less than 16 cm and a height of not less than 25 cm.

[0046] In a preferred manner, the annular member 31 is made by bending a channel steel into a circular ring.

[0047] In a preferred embodiment, the vertical rod 22 is a channel steel.

[0048] In a preferred embodiment, the pile foundation 7 includes PHC piles and steel pipe piles.

[0049] In a preferred manner, the auxiliary work described in the present application refers to reinforcing the lower part of the pile foundation 7 or connecting rods between adjacent pile foundations 7, etc.

[0050] Example 2

[0051] like Figure 1 , Figure 3As shown, on the basis of Example 1, the pile cap structure described in this embodiment further includes a connecting device 6, which is arranged along the circumference of the pile cap body 2, and includes a connecting bolt 61, and the connecting bolt 61 can rotate horizontally relative to the pile cap body 2. By providing the connecting device 6, the connecting device 6 includes the connecting bolt 61, so that it is convenient for subsequent auxiliary components to be connected to the pile cap body 2 through the connecting bolt 61. Further, the connecting bolt 61 can rotate horizontally relative to the pile cap body 2, so that when the subsequent auxiliary components are connected to the pile cap body 2, they can be connected through the connecting bolt 61. Adjust the angle of the accessory component in the horizontal direction to make it more convenient to connect the accessory component to the pile cap body 2. Furthermore, the pile cap structure described in this embodiment, by installing the pile cap body 2 on the pile foundation 7, is convenient to use the pile foundation 7 for support. The accessory component is connected to the pile cap body 2 through the connecting device 6, so that the pile cap structure described in this embodiment achieves the purpose of connection conversion, and the accessory component is indirectly connected to the pile foundation 7 through the pile cap structure, so that it is convenient to use the pile foundation 7 for support to meet some construction requirements, or connect multiple pile foundations 7 into one to provide the overall stability or strength of the pile foundation 7.

[0052] A preferred method is as follows Figure 3 As shown, the connecting device 6 also includes a fixing plate 62 and a pin 63. The two fixing plates 62 are arranged on the pile cap body 2 at intervals. The connecting bolt 61 is installed between the two fixing plates 62. The pin 63 runs through the fixing plate 62 and the connecting bolt 61. The connecting bolt 61 is installed between the two fixing plates 62 through the pin 63, so that the connecting bolt 61 can be horizontally rotated around the pin 63, so that when the subsequent auxiliary components are connected to the pile cap body 2, the angle of the auxiliary components in the horizontal direction can be adjusted through the connecting bolt 61, so that the connection between the auxiliary components and the pile cap body 2 is more convenient, wherein the auxiliary components are such as rods, trusses, etc.

[0053] like Figure 3 As shown, the connecting bolt 61 includes a screw rod 611 and a rotating plate 612 which are connected to each other. The rotating plate 612 is installed between two fixed plates 62 , and the pin shaft 63 passes through the fixed plate 62 and the rotating plate 612 .

[0054] In a preferred manner, the connecting device 6 is arranged on the upper annular plate 21, and / or the connecting device 6 is arranged on the lower annular plate 23, wherein the specific arrangement of the connecting device 6 is determined according to actual construction requirements.

[0055] Example 3

[0056] Based on Example 1 or Example 2, this embodiment further discloses a method for installing a pile cap structure, comprising the following steps:

[0057] Step 1: Before installing the pile cap structure, first check whether the pile head of the pile foundation 7 is cut flat and the elevation is consistent. After confirming that the installation conditions are met, add a 10mm rubber pad to the top surface of the pile foundation 7;

[0058] Step 2: First, connect the onshore protection basket 1 to the top of the pile cap body 2, install the working platform 3 at the bottom of the pile cap body 2, and weld the ladder bars 41 on the vertical rods 22 to facilitate the subsequent safe construction operations;

[0059] Step 3: Use the crawler pile cap structure, take the guard basket 1 as the lifting point, align vertically with the pile foundation 7, and slowly put the pile cap body 2 on the pile foundation 7, so that the top plate 25 is in contact with the top of the pile foundation 7, and then the construction personnel lock the fastening devices 5 around the top of the pile cap body 2, so that the fastening bolts 51 of the fastening devices 5 around the top are tightly against the side of the pile foundation 7 to fix the pile cap body 2 in position.

[0060] Among them, in the process of lifting and installing the pile cap structure, we must pay attention to avoid damaging the pile foundation 7 structure, do a good job of protecting the finished product, and strictly prohibit oblique lifting.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pile cap structure, characterized in that: The utility model comprises a guard basket (1), a pile cap body (2) and a working platform (3) which are connected in sequence from top to bottom. The pile cap body (2) is provided with at least one lifting bar group (4). The lifting bar group (4) comprises a plurality of ladder bars (41). Adjacent ladder bars (41) in the same lifting bar group (4) are arranged vertically at intervals.

2. The pile cap structure according to claim 1, characterized in that: The pile cap body (2) comprises an upper annular plate (21), a vertical rod (22) and a lower annular plate (23); the upper annular plate (21) is connected to the lower annular plate (23) via the vertical rod (22); a top plate (25) is arranged on the top of the upper annular plate (21); the guard basket (1) is detachably connected to the top plate (25); a lifting ring (13) is arranged on the guard basket (1); the working platform (3) is connected to the lower annular plate (23); and the lifting bar group (4) is arranged on at least one of the vertical rods (22).

3. The pile cap structure according to claim 2, characterized in that: It also comprises a fastening device (5), which is arranged along the circumference of the upper annular plate (21), and is used to fix the pile cap body (2) on the pile foundation (7).

4. The pile cap structure according to claim 3, characterized in that: The fastening device (5) comprises a fastening bolt (51) and a fastening nut (52), wherein the fastening nut (52) is arranged along the circumference of the upper annular plate (21), the fastening bolt (51) is threadedly matched with the fastening nut (52), and the end of the fastening bolt (51) passes through the upper annular plate (21), and the fastening bolt (51) is used to abut and fix the pile foundation (7).

5. The pile cap structure according to claim 4, characterized in that: The fastening device (5) further comprises a first strip plate (53), wherein the first strip plate (53) is located inside the upper annular plate (21), and the first strip plate (53) is connected to the end of the fastening bolt (51).

6. The pile cap structure according to claim 2, characterized in that: It also comprises a connecting device (6), the connecting device (6) being arranged along the circumference of the pile cap body (2), the connecting device (6) comprising a connecting bolt (61), and the connecting bolt (61) being able to rotate horizontally relative to the pile cap body (2).

7. The pile cap structure according to claim 6, characterized in that: The connecting device (6) further comprises a fixing plate (62) and a pin shaft (63), wherein the two fixing plates (62) are arranged at intervals on the pile cap body (2), the connecting bolt (61) is installed between the two fixing plates (62), and the pin shaft (63) passes through the fixing plate (62) and the connecting bolt (61).

8. The pile cap structure according to claim 7, characterized in that: The connecting bolt (61) comprises a screw rod (611) and a rotating plate (612) connected to each other. The rotating plate (612) is installed between the two fixed plates (62), and the pin shaft (63) passes through the fixed plate (62) and the rotating plate (612).

9. The pile cap structure according to claim 8, characterized in that: The connecting device (6) is arranged on the upper annular plate (21), and / or the connecting device (6) is arranged on the lower annular plate (23).

10. The pile cap structure according to any one of claims 2 to 9, characterized in that: The working platform (3) comprises an annular member (31) and a reinforcing rod (32), wherein the reinforcing rod (32) is arranged along the circumference of the lower annular plate (23), one end of the reinforcing rod (32) is connected to the lower annular plate (23), and the other end of the reinforcing rod (32) is connected to the annular member (31), and a circular plate (33) is laid on the top of the annular member (31) and the reinforcing rod (32).

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