Connecting structure of photovoltaic support steel stand column and cast-in-place pile

Abstract

The utility model belongs to the technical field of photovoltaic support steel stand column construction, and particularly relates to a photovoltaic support steel stand column and cast-in-place pile connecting structure which comprises a photovoltaic support steel stand column and a cast-in-place pile below the photovoltaic support steel stand column, a reinforcement cage matched with the cast-in-place pile is arranged in the cast-in-place pile, and the lower end of the photovoltaic support steel stand column extends into the reinforcement cage. The photovoltaic support steel stand column is connected with the cast-in-place pile through a steel stand column sleeve, the photovoltaic support steel stand column is sleeved with the steel stand column sleeve, at least three connecting steel bars are welded to the outer portion of the steel stand column sleeve, and the bottoms of the connecting steel bars are inserted into the cast-in-place pile. According to the utility model, stable and reliable connection between the photovoltaic support steel stand column and the cast-in-place pile is ensured, and the cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to photovoltaic support steel stand construction technical field, concretely relates to a kind of connecting structure of photovoltaic support steel stand and bored pile. BACKGROUND

[0002] In the connecting structure of photovoltaic support steel stand and bored pile, usually include three kinds of connecting structures, the analysis of the three connecting structures and their deficiencies is as follows,

[0003] 1) the first sleeve connecting structure: use steel stand sleeve 102 as the intermediate connecting piece of bored pile 103 and photovoltaic support steel stand 101, as shown in the specific, Figure 1 Photovoltaic support steel stand 101 is externally sleeved with steel stand sleeve 102, steel stand sleeve 102 is embedded when pouring concrete, concrete enters steel stand sleeve 102, and the bottom of steel stand sleeve 102 is located in the reinforcement cage 104 of bored pile 103;This method has the problems of insufficient concrete filling in steel stand sleeve 102 and the deepness of steel stand sleeve 102 into bored pile 103 (generally single-row pile reaches 1m), which increases the construction difficulty and cost, and the steel stand sleeve 102 and bored pile 103 are easy to separate under the action of horizontal dynamic load, thereby causing the whole photovoltaic support steel stand 01 to be overturned and safety problems.

[0004] 2) the second anchor bolt connecting structure: 4 anchor bolts 202 are used to connect upper photovoltaic support steel stand 201 and bottom bored pile 203, as shown in the specific, Figure 2 Photovoltaic support steel stand 201 is connected with stand bottom plate 205 at the bottom, and stand bottom plate 205 is located at the top of anchor bolt 202, anchor bolt 202 is embedded in bored pile 203 after being arranged in stand bottom plate 205, and the bottom of anchor bolt 202 is located in the reinforcement cage 204 of bored pile 203;The deficiencies of this method are: the thickness of anchor bolt 202 protective layer is required to be large, thereby causing the pile diameter of bored pile 203 to increase by about 100mm (the pile diameter of ordinary bored pile is 300mm, Figure 1 And Figure 3 The bored pile is ordinary bored pile, Figure 2 The pile diameter of bored pile 203 under anchor bolt connecting structure is 400mm), the hole diameter is also increased, and the increase of pile diameter and hole diameter leads to the increase of material and construction cost, and further causes unnecessary waste.

[0005] 3) the third embedded part connecting structure: use the top embedded part of bored pile 303 to connect upper photovoltaic support steel stand 301 and lower bored pile 303, as shown in the specific, Figure 3As shown, before the concrete pouring in the cast-in pile 303, a pre-embedded part is embedded in the top of the pile, the pre-embedded part adopts a pre-embedded plate 302, such as a steel plate, the bottom of the pre-embedded plate 302 is located in the reinforcement cage 304 of the cast-in pile 303, and after the concrete reaches the strength, the bottom of the photovoltaic support steel column 301 is welded with the pre-embedded plate 302; this method seriously affects the concrete pouring and vibrating of the cast-in pile 303, thereby seriously affecting the concrete construction quality and threatening the project safety, and meanwhile, the welding process is troublesome, fire is prone to occur, and the anticorrosive layer is damaged. Content of the utility model

[0006] The problem to be solved by the utility model is how to improve the stability and reliability of the connection between the photovoltaic support steel column and the cast-in pile and save cost.

[0007] In order to solve the above technical problems, the utility model provides the following technical scheme:

[0008] A connecting structure of a photovoltaic support steel column and a cast-in pile, comprising the photovoltaic support steel column, the cast-in pile below the photovoltaic support steel column, a matched reinforcement cage arranged in the cast-in pile, the lower end of the photovoltaic support steel column extending into the inside of the reinforcement cage, the photovoltaic support steel column being connected with the cast-in pile through a steel column sleeve, the steel column sleeve being sleeved on the outside of the photovoltaic support steel column, at least three connecting steels being welded on the outside of the steel column sleeve, and the bottom of the connecting steel being inserted into the cast-in pile.

[0009] Further, the connecting steels are uniformly arranged on the periphery of the steel column sleeve.

[0010] Further, the number of the connecting steels is three.

[0011] Further, the three connecting steels are arranged in an equilateral triangle.

[0012] Further, the diameter of the connecting steel is 10 mm.

[0013] Further, the connecting steel is welded on the bottom of the outside of the steel column sleeve.

[0014] Further, the length of the welding seam of the connecting steel is 60 mm, and the size of the welding leg is 3 mm.

[0015] Further, the total length of each connecting steel is 210 mm, and the anchoring length is 150 mm.

[0016] Further, the length of the steel column sleeve located in the cast-in pile is 300 mm.

[0017] Further, the connecting steel is an HRB400 steel.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model discloses utilize the better holding force between connecting reinforcement and concrete, and reliable welding connection between connecting reinforcement and steel column sleeve.

[0020] The utility model discloses compared with prior art has saved construction cost. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the first sleeve connecting structure schematic diagram of prior art;

[0022] Figure 2 It is the second anchor bolt connecting structure schematic diagram of prior art;

[0023] Figure 3 It is the third embedded part connecting structure schematic diagram of prior art;

[0024] Figure 4 It is the connecting structure schematic diagram of photovoltaic support steel column and cast-in-place pile of the utility model;

[0025] Figure 5 It is the connecting structure schematic diagram of photovoltaic support steel column and cast-in-place pile of the utility model; Figure 4 The sectional view of 1-1 direction of

[0026] Figure 6 It is the structure schematic diagram of cast-in-place pile and reinforcement cage of Figure 4

[0027] Figure 7 It is the steel column sleeve and connecting reinforcement welding schematic diagram of Figure 4

[0028] Reference Signs:

[0029] Prior Art Reference Signs:

[0030] Figure 1 In it: 101 is photovoltaic support steel column;102 is steel column sleeve;103 is cast-in-place pile;104 is reinforcement cage;

[0031] Figure 2 In it: 201 is photovoltaic support steel column;202 is anchor bolt;203 is cast-in-place pile;204 is reinforcement cage;205 is column bottom plate;

[0032] Figure 3 In it: 301 is photovoltaic support steel column;302 is embedded plate;303 is cast-in-place pile;304 is reinforcement cage.

[0033] The utility model discloses utilize the better holding force between connecting reinforcement and concrete, and reliable welding connection between connecting reinforcement and steel column sleeve. ​​

[0034] 401 is a photovoltaic support steel column; 402 is a steel column sleeve; 403 is a cast-in-place pile; 404 is a steel cage; and 405 is a connecting steel bar. DETAILED DESCRIPTION

[0035] The technical solutions of the present application will be described clearly below in combination with the drawings. Obviously, the described embodiments are not all the embodiments of the present application, and all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the protection scope of the present application.

[0036] It should be noted that the terms "center", "upper", "lower", "horizontal", "left", "right", "front", "rear", "transverse", "longitudinal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0037] In combination with Figures 4-7 As shown in the drawings, the present application provides a connection structure of a photovoltaic support steel column and a cast-in-place pile, which comprises a photovoltaic support steel column 401 and a cast-in-place pile 403 below the photovoltaic support steel column 401. A matching steel cage 404 is arranged in the cast-in-place pile 403, and the lower end of the photovoltaic support steel column 401 penetrates into the inside of the steel cage 404 and is welded and connected with the steel cage 404. The pile diameter d1 of the cast-in-place pile 403 is 300 mm.

[0038] The height h1 of the photovoltaic support steel column 401 is 1150 mm, the height h2 of the cast-in-place pile 403 above the ground is 200 mm, the height h3 of the photovoltaic support steel column 401 below the ground is 100 mm, the height (h2+h3) of the photovoltaic support steel column 401 penetrating into the cast-in-place pile 403 is 300 mm, and the height h4 of the photovoltaic support steel column 401 above the cast-in-place pile 403 is 850 mm, h4=(h1-h2-h3).

[0039] The photovoltaic support steel column 401 and the cast-in-place pile 403 are connected through a steel column sleeve 402. The steel column sleeve 402 is sleeved outside the photovoltaic support steel column 401, and the two are of the same height. The outer diameter d2 of the steel column sleeve 402 is 159 mm, and the wall thickness of the steel column sleeve 402 is 4.5 mm.

[0040] Furthermore, at least three connecting steel bars 405 are welded outside the steel column sleeve 402.

[0041] The connecting steel bars 405 are uniformly arranged around the steel column sleeve 402.

[0042] AsFigure 5 As shown, in one specific embodiment, the number of connecting steel bars 405 is three, and the three connecting steel bars 405 are arranged in an equilateral triangle.

[0043] The diameter d3 of the connecting steel bars 405 is 10mm of HRB400 steel bars. HRB400 is the grade of steel bars, indicating the yield strength grade of the steel bars. HRB is the English abbreviation of hot-rolled ribbed steel bars, and 400 represents the standard value of the yield strength of the steel bars is 400MPa. HRB400 steel bars are a commonly used high-strength steel bar, widely used in various building structures.

[0044] The top of the connecting steel bars 405 is welded to the outside of the steel column sleeve 402, and the bottom of the connecting steel bars 405 is inserted into the bored pile 403, and the length of the connecting steel bars 405 in the bored pile 403 is a predetermined distance. The bored pile 403 is a concrete structure.

[0045] As shown Figure 4 In one specific embodiment, the connecting steel bars 405 are welded to the bottom of the steel column sleeve 402 outside, and the weld length L1 is 60mm, and the weld leg size of the weld is 3mm. The weld length refers to the actual length of the welded joint, while the weld leg size describes a key dimension of the weld cross section, which is usually used to evaluate the strength of the weld. This welding method ensures reliable connection between the connecting steel bars 405 and the steel column sleeve 402.

[0046] The total length (L1+L2) of each connecting steel bar 405 is 210mm, and the anchoring length L2 is 150mm. This ensures stable anchoring of the connecting steel bars 405 in the concrete, improving the reliability of the connection.

[0047] In one specific embodiment, the length of the steel column sleeve 402 in the bored pile 403 is 300mm.

[0048] The utility model utilizes the good gripping force between the connecting steel bars 405 and the concrete, and the reliable welding connection between the connecting steel bars 405 and the steel column sleeve 402. This connection method firmly connects the steel column sleeve 402 and the bored pile 403 together, and this connection can resist various external forces, ensuring stable connection between the photovoltaic support steel column and the bored pile 403.

[0049] Specific construction steps:

[0050] 1. Drilling: First, drill according to design requirements to lay the foundation for subsequent bored pile 403 construction.

[0051] 2. Place the steel reinforcement cage 404: Place the prefabricated steel reinforcement cage 404 into the drilled hole to ensure the strength and stability of the bored pile 403.

[0052] 3. Pour concrete to the top surface: Pour concrete into the hole until it reaches the design required top surface height.

[0053] 4. Vibration: Vibrate the poured concrete to eliminate air bubbles and improve its density and strength.

[0054] 5. Insert the steel column sleeve 402 with welded reinforcing bars: Insert the steel column sleeve 402 with the bottom welded reinforcing bars 405 into the cast-in-place pile 403, and ensure that the steel column sleeve 402 penetrates 300mm into the concrete to achieve a firm connection with the cast-in-place pile 403.

[0055] 6. Maintenance: Necessary maintenance treatments shall be carried out on the 403 cast-in-place piles to ensure that they meet the design requirements for strength and stability.

[0056] After adopting this design, compared to Figure 1 The existing technology described in this embodiment can bring significant economic benefits, as detailed below:

[0057] In terms of material conservation: compared to Figure 1 In this embodiment, the length of the 402 steel column sleeve for each pile is reduced by about 0.7m, saving about 12kg of steel; at the same time, 3 steel bars are added, which adds about 0.388kg of steel. According to the comprehensive calculation, each pile can save 11.61kg of steel.

[0058] For large-scale application effects: Taking a 1GW single-row photovoltaic project as an example, approximately 264,000 bushings are required. Based on the above-mentioned savings calculation, 11.61*264000 / 1000=3065.04t of steel can be saved.

[0059] Economic benefits: Considering a comprehensive cost of 0.8 million yuan per ton of steel, the steel saved can generate an economic benefit of approximately 3065.04 * 0.8 = 2452.032 million yuan.

[0060] The above technical features constitute the preferred embodiment of this utility model, which has strong adaptability and optimal implementation effect. Non-essential technical features can be added or removed according to actual needs to meet the needs of different situations.

[0061] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A connecting structure of a photovoltaic support steel column and a cast-in-place pile, comprising a photovoltaic support steel column and a cast-in-place pile below the photovoltaic support steel column, a matched steel reinforcement cage is arranged in the cast-in-place pile, characterized in that, The lower end of the photovoltaic support steel column extends into the inside of the steel reinforcement cage, the photovoltaic support steel column is connected with the cast-in-place pile through a steel column sleeve, the steel column sleeve is sleeved outside the photovoltaic support steel column, at least three connecting steels are welded outside the steel column sleeve, and the bottom of the connecting steel is inserted into the cast-in-place pile.

2. The photovoltaic support steel column and cast-in-place pile connecting structure according to claim 1, characterized in that, The connecting steels are uniformly arranged on the periphery of the steel column sleeve.

3. The connecting structure of the photovoltaic support steel column and the cast-in-place pile according to claim 2, characterized in that, The number of the connecting steels is three.

4. The connecting structure of the photovoltaic support steel column and the cast-in-place pile according to claim 3, characterized in that, The three connecting steels are arranged in an equilateral triangle.

5. The photovoltaic racking steel column and cast-in-place pile connection structure according to claim 1, characterized in that, The diameter of the connecting steel is 10 mm.

6. The photovoltaic racking steel column and cast-in-place pile connection structure according to claim 1, characterized in that, The connecting steel is welded on the bottom outside the steel column sleeve.

7. The photovoltaic racking steel column and cast-in-place pile connection structure according to claim 6, characterized in that, The length of the welding seam of the connecting steel is 60 mm, and the size of the welding leg is 3 mm.

8. The photovoltaic racking steel column and cast-in-place pile connection structure according to claim 6, characterized in that, The total length of each connecting steel is 210 mm, and the anchoring length is 150 mm.

9. The photovoltaic racking steel column and cast-in-place pile connection structure according to claim 1, characterized in that, The length of the steel column sleeve located in the cast-in-place pile is 300 mm.

10. The photovoltaic racking steel column and cast-in-place pile connection structure according to claim 1, characterized in that, The connecting steel is HRB400 steel.

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