Adjustable prefabricated steel pile cap for energy storage battery cabin foundation construction

Abstract

The utility model discloses an adjustable prefabricated steel pile cap for energy storage battery cabin foundation construction, which relates to the technical field of energy storage power station foundation engineering design, and comprises a steel pile cap body, an adjusting component and an anchoring steel bar component, the steel pile cap body comprises a steel pile cap bottom plate and a steel pile cap side plate arranged below the steel pile cap bottom plate; the adjusting assembly is used for adjusting the distance between the steel pile cap body and the square pile head and is arranged on the steel pile cap bottom plate, and the anchoring steel bar assembly is arranged above the steel pile cap bottom plate; a prefabricated straining beam is further placed on the steel pile cap bottom plate, a plurality of prefabricated straining beam reserved ribs are arranged in the prefabricated straining beam, the prefabricated straining beam reserved ribs extend out of the prefabricated straining beam to the interior of the anchoring steel bar assembly, and concrete is poured into the steel pile cap body. Standardized prefabrication production of the foundation is facilitated, and the on-site construction process is simplified.

Description

Technical Field

[0001] The utility model relates to an adjustable prefabricated steel pile cap used for the construction of an energy storage battery cabin foundation, and belongs to the technical field of foundation engineering design of energy storage power stations. Background Art

[0002] At present, new energy storage has entered the stage of large-scale development from the initial stage of commercialization, and the construction period of energy storage power stations has been greatly shortened. Among them, the battery cabin in the energy storage area is the most important construction part of the energy storage power station, and its foundation construction has the highest cost and takes the longest time in the construction process.

[0003] Currently, the combination of prefabricated piles and foundation caps and tension beams can speed up construction, reduce excavation, and reduce the use of reinforced concrete. It can also adapt to harsh site conditions such as deep, uneven soft soil, and meet the vertical bearing capacity and settlement stability requirements of the energy storage battery compartment. However, during the foundation construction phase of the energy storage power station, the production of the battery compartment foundation caps and tension beams involves a large amount of repetitive and tedious on-site work. This requires first tying steel bars, then welding embedded parts, then fabricating and securing wooden formwork, and finally pouring concrete. This is time-consuming and labor-intensive.

[0004] Furthermore, when internal adjustments are made to the energy storage battery compartment equipment but the pile foundation work is already completed, the on-site pile top elevation may not meet the requirements for the battery compartment structure, falling below the required design elevation. Alternatively, the completed pile foundation work may have significant construction errors, resulting in inconsistent pile top elevations. In such cases, pile splicing is necessary, increasing the amount of construction work and time, hindering schedule and cost control. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies in the prior art and provide an adjustable prefabricated steel pile cap for the construction of an energy storage battery compartment foundation, which facilitates standardized prefabrication production of the foundation and simplifies the on-site construction process.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] The utility model provides an adjustable prefabricated steel pile cap for the construction of an energy storage battery cabin foundation, comprising a steel pile cap body, an adjustment assembly and an anchoring steel bar assembly. The steel pile cap body is sleeved on the pile head of a square pile, and the steel pile cap body comprises a steel pile cap bottom plate and a steel pile cap side plate provided below the steel pile cap bottom plate.

[0008] The adjusting assembly is used to adjust the distance between the steel pile cap body and the square pile head, and is arranged on the steel pile cap bottom plate. The anchoring steel bar assembly is arranged above the steel pile cap bottom plate.

[0009] A prefabricated tension beam is also placed on the bottom plate of the steel pile cap. A plurality of prefabricated tension beam reinforcement bars are provided in the prefabricated tension beam. The prefabricated tension beam reinforcement bars extend from the prefabricated tension beam to the inside of the anchoring steel bar assembly. Concrete is poured in the area formed by the steel pile cap body, the adjustment assembly and the anchoring steel bar assembly.

[0010] Furthermore, the number of the steel pile cap side plates is 4, which are arranged to form a square, and the square pile heads extend into the interior of the square.

[0011] Furthermore, the steel pile cap body also includes a steel pile cap stiffening plate. There are multiple steel pile cap stiffening plates, which are evenly distributed at the connection between the steel pile cap bottom plate and the steel pile cap side plates.

[0012] Furthermore, the steel pile cap bottom plate and the square pile head are both square, and the side length of the steel pile cap bottom plate is 250 mm wider than the side length of the square pile head, and the width of the steel pile cap side plate is 10 mm wider than the side length of the square pile head.

[0013] Furthermore, silicone weather-resistant sealant is filled between the square pile head and the steel pile cap side plate.

[0014] Furthermore, a grouting and adjustment hole is provided in the center of the steel pile cap bottom plate, and a grouting exhaust hole is provided at one corner. The grouting and adjustment hole is used to pour concrete into the steel pile cap body and manually adjust the adjustment component, and the grouting exhaust hole is used to exhaust when pouring concrete.

[0015] Furthermore, a pile end plate is provided on the top of the square pile head, and a plurality of adjustment bolt holes are opened on the bottom plate of the steel pile cap. The adjustment bolt holes are arranged around the grouting and adjustment holes and are arranged one-to-one with the adjustment components. The adjustment component includes an adjusting screw and an adjusting nut. The head end of the adjusting screw is welded to the pile end plate, and the tail end is threadedly connected to the adjusting nut and then passes through the adjusting bolt hole to extend above the adjusting bolt hole.

[0016] Furthermore, the number of the adjusting bolt holes is 3, and a lifting ring is provided between two adjacent adjusting bolt holes. The lifting ring is used to lift the steel pile cap body, and the angle between the lifting ring and the adjacent adjusting bolt hole is 60°.

[0017] Furthermore, the anchoring steel bar assembly includes anchoring long steel bars, anchoring short steel bars and stirrups. The number of the anchoring long steel bars is 8, which are respectively welded to the ends and the center of the steel pile cap side plates above the steel pile cap bottom plate. The anchoring short steel bars are connected to the upper ends of the anchoring long steel bars by welding, and the stirrups are connected between two adjacent anchoring long steel bars.

[0018] Furthermore, the diameter of the anchoring long steel bar is d and the length is 20d, the diameter of the anchoring short steel bar is d and the length is 5d, and the value range of d is 12~16mm.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The utility model can realize the assembled connection node of prefabricated square piles-steel pile caps-tension beams, facilitates the standardized prefabrication production of foundations, simplifies the on-site construction process, realizes the mechanical design concept of "strong nodes", can not only ensure the molding quality of components, but also can produce them in advance, reduce the on-site construction workload, and shorten the construction period.

[0021] The utility model utilizes three matching adjusting bolt components and has the ability to level the horizontal plane. It can handle pile top elevations that do not meet the requirements of the battery compartment, reduce the number of pile connections, and shorten the additional engineering workload and time cost of adjusting the pile top elevation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic side cross-sectional view of an adjustable prefabricated steel pile cap used for energy storage battery compartment foundation construction in one embodiment of the present utility model;

[0023] Figure 2 This is a schematic top view of the structure of an adjustable prefabricated steel pile cap used for the construction of an energy storage battery compartment foundation in one embodiment of the present utility model;

[0024] Figure 3 for Figure 2 Schematic diagram of the middle AA section;

[0025] Figure 4 for Figure 2 Schematic diagram of the middle BB section;

[0026] In the figure: 1-square pile head, 2-steel pile cap bottom plate, 3-steel pile cap side plate, 4-steel pile cap stiffener, 5-anchoring long steel bar, 6-anchoring short steel bar, 7-adjusting screw, 8-adjusting nut, 9-grouting and adjustment hole, 10-adjusting bolt hole, 11-grouting vent hole, 12-lifting ring, 13-silicone weatherproof sealant, 14-prefabricated tension beam, 15-prefabricated tension beam reinforcement, 16-side formwork, 17-stirrups, 18-pile end plate. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are not intended to limit the scope of protection of the present invention.

[0028] like Figure 1As shown, an embodiment of the present invention provides an adjustable prefabricated steel pile cap for the construction of an energy storage battery cabin foundation, comprising a steel pile cap body, an adjustment assembly and an anchoring steel bar assembly.

[0029] The steel pile cap body consists of a steel pile cap base plate 2 and steel pile cap side plates 3. The steel pile cap base plate 2 is 250mm wider than the pile body, conveniently serving as the bottom formwork and temporary support for the prefabricated tie beam 14 during concrete pouring of the prefabricated joint. Four steel pile cap side plates 3 are located below the steel pile cap base plate 2 and arranged in a square configuration. The clear inner width of the steel pile cap side plates 3 is 10mm wider than the square pile head 1. This gap ensures that the steel pile cap can accommodate dimensional deviations in the prefabricated square pile head 1 during installation. The height of the steel pile cap side plates 3 is determined based on height adjustment requirements and should not be less than the sum of the side length of the square pile head 1 and the adjustable height. This height is primarily determined to accommodate the bending moment at the end of the prefabricated tie beam 14, which can be transferred through the compression between the steel pile cap side plates 3 and the prefabricated square pile head 1. Furthermore, the nested structure of the steel pile cap body and the square pile head 1 strengthens the square pile head 1.

[0030] In some embodiments, the steel pile cap body also includes twelve steel pile cap stiffeners 4, evenly distributed along the connecting edges of the steel pile cap base plate 2 and the steel pile cap side plates 3. In this embodiment, these are located at both ends and the middle of each connecting edge. The height of the steel pile cap stiffeners 4 is 100 mm less than that of the steel pile cap side plates 3, primarily to provide out-of-plane support stiffness for the steel pile cap side plates 3. The height of the steel pile cap stiffeners 4 decreases as this support effect decreases, so their height can be appropriately reduced. The thickness of the steel pile cap base plate 2 and the steel pile cap side plates 3 is no less than 20 mm, given that the steel plates themselves should possess a certain degree of bending stiffness to constrain the pile heads 1.

[0031] The top of the square pile head 1 is provided with a pile end plate 18, combined with Figure 2 A 200mm diameter grouting and adjustment hole 9 is located in the center of the steel pile cap base plate 2, and a grouting vent hole 11 is located at one corner. Multiple adjustment bolt holes 10 are located around the grouting and adjustment hole 9. In this embodiment, there are three adjustment bolt holes 10, each of which contains an adjustment assembly.

[0032] like Figure 3As shown, the adjustment assembly includes an adjusting screw 7 and an adjusting nut 8. The diameter of the adjusting screw 7 is 5mm smaller than the adjusting bolt hole 10. The head end of the adjusting screw 7 is welded to the pile end plate 18, and the tail end is threadedly connected to the adjusting nut 8, extending through the adjusting bolt hole 10 to the top of the adjusting bolt hole 10. The length of the adjusting screw 7 can be 300mm longer than the height of the prefabricated square pile to be adjusted. This is mainly because this portion of the screw is encased in concrete, and the surface thread of the adjusting screw 7 has a strong anchoring effect on the concrete interface. The material strength and diameter of the adjusting screw 7 can be selected based on the support pressure and anchoring requirements during assembly and installation.

[0033] like Figure 4 As shown, a lifting ring 12 is provided between two adjacent adjusting bolt holes 10. Specifically, the lifting rings 12 and adjusting bolt holes 10 are spaced apart, with the line connecting the lifting rings 12 and adjusting bolt holes 10 forming a 60° angle with the center point of the base plate. This arrangement ensures stable installation of the steel pile cap and allows for horizontal leveling, facilitating the stable placement of the prefabricated tension beam 14. The diameter and hole size of the lifting rings 12 can be determined based on the lifting weight of the prefabricated steel pile cap.

[0034] The anchor bar assembly strengthens and secures the connection between the tension beam and the pile head. It includes eight long anchor bars 5, short anchor bars 6, and stirrups 17. Eight long anchor bars 5 are welded to the ends and center of the corresponding steel pile cap side plates 3 above the steel pile cap base plate 2. Short anchor bars 6 are welded to the upper ends of the long anchor bars 5, and stirrups 17 are connected between adjacent long anchor bars 5. Because the energy storage battery compartment does not require pullout resistance, the long anchor bars 5 have a diameter of d and a length of 20d. The short anchor bars 6 have a diameter of d and a length of 5d, with d ranging from 12 to 16 mm.

[0035] A prefabricated tension beam 14 is placed on the steel pile cap bottom plate 2. A plurality of prefabricated tension beam reinforcement bars 15 are arranged inside the prefabricated tension beam 14. The prefabricated tension beam reinforcement bars 15 extend from the prefabricated tension beam 14 to the inside of the anchor steel bar assembly. Concrete is poured inside the steel pile cap body through pouring and adjustment holes.

[0036] The construction process of this utility model includes:

[0037] The steel pile cap body and anchor steel bar components are processed and welded in the factory and then transported to the site;

[0038] Position and weld the adjusting screw 7 on the pile end plate 18 and screw in the adjusting nut 8;

[0039] Determine the elevation of the steel pile cap bottom plate according to the design elevation of the bottom of the prefabricated tension beam of the battery compartment, and initially tighten the adjusting nut 8 to this elevation;

[0040] Hoist the steel pile cap and buckle it onto the prefabricated square pile head 1. Adjust the three adjusting nuts 8 by grouting and adjusting holes 9 so that the top surface of the steel pile cap base plate 2 is at the specified elevation and level it. After completion, hoist and unhook it.

[0041] Check and straighten the anchored long steel bars 5, and add stirrups 17 on site;

[0042] Place the prefabricated tension beam 14 on the steel pile cap bottom plate 2, 20 mm deep into the steel pile cap bottom plate 2, and extend the prefabricated tension beam reinforcement 15 into the steel pile cap;

[0043] Set up the assembled node side formwork 16 and pour concrete to the top elevation of the precast tension beam 14. The concrete flows into the cavity through the grouting and adjustment holes 9 of the steel pile cap bottom plate 2 and is poured densely. During this process, the side formwork 16 is placed on the side of the steel pile cap bottom plate 2 to assist in the pouring, and finally form an assembled node of precast square pile-steel pile cap-precast tension beam;

[0044] Anti-corrosion measures are taken on the outside of the steel pile cap body, and the gap between the steel pile cap body and the prefabricated square pile body is sealed with silicone weather-resistant sealant 13.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An adjustable prefabricated steel pile cap for energy storage battery cabin foundation construction, characterized in that: It includes a steel pile cap body, an adjustment assembly and an anchoring steel bar assembly. The steel pile cap body is sleeved on the pile head of the square pile. The steel pile cap body includes a steel pile cap bottom plate and a steel pile cap side plate provided below the steel pile cap bottom plate. The adjusting assembly is used to adjust the distance between the steel pile cap body and the square pile head, and is arranged on the steel pile cap bottom plate. The anchoring steel bar assembly is arranged above the steel pile cap bottom plate. A prefabricated tension beam is also placed on the bottom plate of the steel pile cap. A plurality of prefabricated tension beam reinforcement bars are provided in the prefabricated tension beam. The prefabricated tension beam reinforcement bars extend from the prefabricated tension beam to the inside of the anchoring steel bar assembly. Concrete is poured in the area formed by the steel pile cap body, the adjustment assembly and the anchoring steel bar assembly.

2. The adjustable prefabricated steel pile cap for energy storage battery compartment foundation construction according to claim 1 is characterized in that: The number of the steel pile cap side plates is 4, which are arranged to form a square, and the pile heads of the square piles extend into the interior of the square.

3. The adjustable prefabricated steel pile cap for energy storage battery compartment foundation construction according to claim 2 is characterized in that: The steel pile cap body further comprises a steel pile cap stiffening plate. There are a plurality of steel pile cap stiffening plates, which are evenly distributed at the connection between the steel pile cap bottom plate and the steel pile cap side plates.

4. The adjustable prefabricated steel pile cap for energy storage battery compartment foundation construction according to claim 2, characterized in that: The steel pile cap bottom plate and the square pile head are both square, and the side length of the steel pile cap bottom plate is 250 mm wider than the side length of the square pile head, and the width of the steel pile cap side plate is 10 mm wider than the side length of the square pile head.

5. The adjustable prefabricated steel pile cap for energy storage battery compartment foundation construction according to claim 2, characterized in that: The space between the square pile head and the steel pile cap side plate is filled with silicone weatherproof sealant.

6. The adjustable prefabricated steel pile cap for energy storage battery compartment foundation construction according to claim 1, characterized in that: A grouting and adjustment hole is provided in the center of the steel pile cap bottom plate, and a grouting exhaust hole is provided at one corner. The grouting and adjustment holes are used to pour concrete into the steel pile cap body and manually adjust the adjustment component. The grouting exhaust hole is used to exhaust when pouring concrete.

7. The adjustable prefabricated steel pile cap for energy storage battery cabin foundation construction according to claim 1, characterized in that: A pile end plate is provided on the top of the square pile head, and a plurality of adjusting bolt holes are opened on the bottom plate of the steel pile cap. The adjusting bolt holes are arranged around the grouting and adjustment holes and are arranged one-to-one in correspondence with the adjusting components. The adjusting component includes an adjusting screw and an adjusting nut. The head end of the adjusting screw is welded to the pile end plate, and the tail end is threadedly connected to the adjusting nut and then passes through the adjusting bolt hole to extend above the adjusting bolt hole.

8. The adjustable prefabricated steel pile cap for energy storage battery cabin foundation construction according to claim 7, characterized in that: The number of the adjusting bolt holes is 3, and a lifting ring is provided between two adjacent adjusting bolt holes. The lifting ring is used to lift the steel pile cap body, and the angle between the lifting ring and the adjacent adjusting bolt hole is 60°.

9. The adjustable prefabricated steel pile cap for energy storage battery cabin foundation construction according to claim 1, characterized in that: The anchoring steel bar assembly includes anchoring long steel bars, anchoring short steel bars and stirrups. The number of the anchoring long steel bars is 8, which are respectively welded to the ends and the center of the steel pile cap side plates above the steel pile cap bottom plate. The anchoring short steel bars are connected to the upper ends of the anchoring long steel bars by welding, and the stirrups are connected between two adjacent anchoring long steel bars.

10. The adjustable prefabricated steel pile cap for energy storage battery cabin foundation construction according to claim 9, characterized in that: The diameter of the anchoring long steel bar is d and the length is 20d. The diameter of the anchoring short steel bar is d and the length is 5d. The value range of d is 12~16mm.

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