Split steel caisson

Abstract

The utility model discloses a spliced steel sinking well, the spliced steel sinking well includes a plurality of prefabricated steel pipe piece monomer, the plurality of prefabricated steel pipe piece monomer splices and connects and encloses the cylindrical structure, and the connecting piece is connected or welded connection between two adjacent steel pipe piece monomers. The utility model makes steel sinking well can be transported and installed in pieces, and the installation and transportation are convenient, and simultaneously can adapt to the foundation pit of different size through the size of monomer and spliced quantity adjustment, saves the customization cost, and reduces the customization period.

Description

Technical Field

[0001] This utility model relates to the field of caisson technology for building construction, and in particular to a spliced ​​steel caisson. Background Technology

[0002] In the construction industry, caissons are generally divided into concrete caissons and steel caissons.

[0003] Traditional steel caissons are mostly monolithic cylindrical structures, formed in one piece, which have the following disadvantages:

[0004] 1. Existing steel caissons have a large overall structure, and on-site installation requires large hoisting equipment, which places high demands on the site and results in low construction efficiency.

[0005] 2. Existing steel caissons are formed in one piece and have fixed dimensions. When the geological conditions at the installation site change, on-site adjustments cannot be made accordingly.

[0006] 3. The overall structure is large, making transportation difficult.

[0007] 4. Traditional steel caissons are all custom-made, one caisson for one use. When the depth / width of the caisson changes, it needs to be re-customized, which is costly and time-consuming.

[0008] Therefore, existing technologies need to be improved. Utility Model Content

[0009] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a modular steel caisson, which is designed to facilitate installation and transportation, and can be adapted to foundation pits of different sizes by adjusting the size of the individual units and the number of units, thus saving customization costs.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] A modular steel caisson, wherein the modular steel caisson comprises multiple prefabricated steel pipe segments, which are spliced ​​together to form a cylindrical structure, and two adjacent steel pipe segments are connected by connectors or welding.

[0012] In some embodiments, each of the steel tube segments comprises:

[0013] Steel wall plate;

[0014] Circumferential ribs are respectively disposed at the upper and lower ends of the protective steel plate, and a plurality of first connecting holes are spaced apart on the circumferential ribs;

[0015] Longitudinal ribs are respectively disposed at the left and right ends of the protective steel plate, and multiple second connecting holes are spaced apart on the longitudinal ribs;

[0016] Two adjacent steel pipe segments are spliced ​​together through the first connecting hole and connector on two adjacent circumferential ribs.

[0017] Two adjacent steel pipe segments are spliced ​​together through the second connecting holes and connectors on the two adjacent longitudinal ribs.

[0018] In some embodiments, the length, height, and thickness of the steel tube segment can be pre-adjusted.

[0019] In some embodiments, the spliced ​​steel caisson is divided into multiple layers in the vertical direction, and each layer is formed by at least two steel pipe segments.

[0020] In some embodiments, each layer of the modular steel caisson is formed by eight individual steel segments.

[0021] In some embodiments, the longitudinal ribs of two adjacent steel pipe segments of the spliced ​​steel caisson are staggered.

[0022] In some embodiments, the connector is a high-strength connecting bolt.

[0023] In some embodiments, the height of the steel tube segment is 300 mm.

[0024] In some embodiments, the thickness of the circumferential ribs and longitudinal ribs is greater than the thickness of the retaining steel plate.

[0025] It should be understood that, within the scope of this utility model, the above-mentioned technical features of this utility model and the technical features specifically described below (such as embodiments) can be combined with each other to form new or preferred technical solutions. Due to space limitations, they will not be described in detail here.

[0026] Compared with the prior art, the beneficial effects of this utility model are:

[0027] 1. Flexible and adjustable: The individual steel pipe segments used for splicing can be freely spliced ​​and adjusted according to the width / depth of the foundation pit to meet the needs of different depths from 2 to 10m, reducing customization costs.

[0028] 2. Lightweight and efficient construction: The materials are lightweight, making them easy to transport and quickly assembled manually. Combined with mechanized operations, this significantly improves construction efficiency.

[0029] 3. Reliable structure: It has good mechanical strength and bending resistance, and the strength of the spliced ​​pieces can resist lateral earth pressure, ensuring the safety of deep foundation pits.

[0030] 4. Wide applicability: Applicable to various deep foundation pit excavation scenarios, solving the limitation of traditional caissons being "one caisson for one purpose". Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0032] Figure 1 This is a structural schematic diagram of the first embodiment of the spliced ​​steel caisson of this utility model.

[0033] Figure 2 This is a structural schematic diagram of the steel pipe segment unit of this utility model.

[0034] Figure 3 for Figure 1 A schematic diagram of the structure unfolding.

[0035] Figure 4 This is a schematic diagram of one embodiment of the spliced ​​steel caisson of this utility model, showing the composition of the number of individual steel pipe segments in each layer.

[0036] Figure 5 This is a schematic diagram of another embodiment of the spliced ​​steel caisson of this utility model, showing the composition of the number of individual steel pipe segments in each layer.

[0037] Figure label:

[0038] 100-Steel caisson, 10-Steel segment unit, 11-Wall-protecting steel plate, 12-Circumferential rib, 121-First connecting hole, 13-Longitudinal rib, 131-Second connecting hole. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a quick-release connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0043] Example 1, please refer to Figures 1 to 3 This embodiment provides a modular steel caisson 100, which includes multiple prefabricated steel segment units 10, such as... Figure 1 As shown in the figure, the multiple prefabricated steel pipe segments 10 are spliced ​​and connected to form a cylindrical structure. Two adjacent steel pipe segments 10 are connected and fastened by connectors (not shown in the figure) or by welding, thus forming a structure as shown in the figure. Figure 1 The spliced ​​steel caisson 100 shown in the figure.

[0044] Since the modular steel caisson 100 of this embodiment is assembled from multiple prefabricated steel pipe segments 10, the entire steel caisson 100 can be prefabricated in sections before installation and then transported to the construction site in multiple loose parts. This facilitates both processing and transportation, and also makes it convenient for workers to assemble on-site. During on-site assembly, small hoisting equipment can be used for movement, positioning, and installation, eliminating the need for large hoisting equipment as required in existing technologies. Thus, the modular steel caisson 100 of this embodiment greatly improves construction efficiency.

[0045] Preferably, the length, height, and thickness of the steel segment unit 10 in this embodiment are prefabricated and adjustable. Because the steel segment unit 10 is a prefabricated component, its dimensions can be adjusted according to the size of the excavation pit on site. For example, for pits with diameters of 2 meters or 10 meters, the diameter difference is significant, therefore the required length and height of the steel segment unit 10 for the corresponding steel caisson will also differ. Furthermore, the thickness of the steel segment unit 10 can be adjusted according to the designed strength. Simultaneously, if the height of the excavation pit changes, the number of steel segment units 10 will also be adjusted accordingly. Thus, the spliced ​​steel caisson 100 of this embodiment can adapt to excavations of various widths and depths. During production, only the dimensions of the steel segment units 10 and the total number of steel segment units 10 need to be adjusted according to the actual dimensions of the excavation pit. This allows for flexible adjustment of the dimensions and number of steel segment units 10 to meet requirements when the excavation pit dimensions change, greatly reducing customization costs and time. Meanwhile, when the diameter of the foundation pit remains constant but the height changes—for example, foundation pit A has a diameter of 2 meters and a height of 5 meters, while foundation pit B has a diameter of 2 meters and a height of 8 meters—the requirements can be met simply by adding 10 steel pipe segments to the steel caisson design for foundation pit A. No redesign or customization is necessary, thus avoiding the limitation of traditional caissons being "one caisson, one use." In contrast, traditional monolithic steel caissons, because their dimensions cannot be flexibly adjusted, become unsuitable whenever the foundation pit size changes, requiring redesign, which is costly and time-consuming.

[0046] In this embodiment, the connector is a high-strength connecting bolt, which ensures the firmness of the connection between the steel pipe segments 10.

[0047] Specifically, in this embodiment, as Figure 2 Each of the steel tube segments 10 shown includes:

[0048] The retaining steel plate 11 is used to support the sidewalls of the foundation pit. In this embodiment, the thickness of the retaining steel plate 11 is greater than or equal to 10mm, which is suitable for conventional foundation pit support. It is understood that in other embodiments, the thickness of the retaining steel plate 11 can be designed to be adapted to specific geological conditions, such as 15mm, 20mm, etc.

[0049] Circumferential ribs 12 are respectively disposed at the upper and lower ends of the retaining steel plate 11, and a plurality of first connecting holes 121 are spaced apart on the circumferential ribs 12. Longitudinal ribs 13 are respectively disposed at the left and right ends of the retaining steel plate 11, and a plurality of second connecting holes 131 are spaced apart on the longitudinal ribs.

[0050] Both the circumferential ribs 12 and the longitudinal ribs 13 are used to strengthen the wall steel plate 11. In this embodiment, the thickness of the circumferential ribs 12 and the longitudinal ribs 13 is greater than the thickness of the wall steel plate 11. Specifically, the circumferential ribs 12 strengthen the upper and lower ends of the wall steel plate 11, while the longitudinal ribs 13 strengthen the left and right ends of the wall steel plate 11. Thus, in the steel caisson 100 composed of multiple steel pipe segments 10, due to the effect of the circumferential ribs 12 and the longitudinal ribs 13, its overall strength is higher than that of a traditional integral steel caisson.

[0051] Simultaneously, the circumferential ribs 12 and longitudinal ribs 13 are also used for splicing adjacent steel pipe segments 10. For example... Figure 3 As shown, two adjacent steel pipe segments 10 are connected by first connecting holes 121 on two adjacent circumferential ribs 12 and connecting parts; two adjacent steel pipe segments 10 are connected by second connecting holes 131 on two adjacent longitudinal ribs 13 and connecting parts.

[0052] In this embodiment, the retaining steel plate 11, the circumferential rib plate 12, and the longitudinal rib plate 13 can be connected by welding. For example... Figure 2 As shown, the retaining steel plate 11 is welded to the outside of the circumferential rib plate 12 and the longitudinal rib plate 13.

[0053] The prefabricated steel segment unit 10 in this embodiment can be constructed by first prefabricating the wall-mounted steel plate 11, then transporting it to the site together with the circumferential ribs 12 and longitudinal ribs 13 for welding to form the steel segment unit 10, and then assembling it. Alternatively, the wall-mounted steel plate 11, circumferential ribs 12, and longitudinal ribs 13 can be prefabricated together to form the steel segment unit 10, and then transported to the site for assembly. Furthermore, the wall-mounted steel plate 11, circumferential ribs 12, and longitudinal ribs 13 can all be prefabricated at the installation site. In other words, the prefabrication of the steel segment unit 10 of this utility model can take many forms.

[0054] All components of the steel pipe segment unit 10 in this embodiment are made of Q235 carbon structural steel.

[0055] like Figure 2 As shown, the steel pipe segment 10 in this embodiment is arc-shaped, which allows it to be spliced ​​into the following configuration: Figure 1 The circular caisson is shown. In other embodiments, the steel pipe segment 10 can also be in the shape of a straight plate, which can be spliced ​​together to form a rectangular caisson.

[0056] The modular steel caisson 100 of this invention is divided into multiple layers in the vertical direction, with each layer consisting of at least two steel pipe segments 10. In this embodiment, the height of each steel pipe segment 10 is 300mm, which allows it to be adapted to steel caissons 100 of different conventional heights.

[0057] As one implementation method, such as Figure 4 As shown, each layer of the spliced ​​steel caisson 100 is formed by eight steel pipe segments 10. When the width of the circumferential rib plate 12 and the longitudinal rib plate 13 is 50 mm, and the inner diameter of the entire spliced ​​steel caisson 100 is 2000 mm, the outer diameter of the entire spliced ​​steel caisson 100 is 2100 mm. When each layer of the spliced ​​steel caisson 100 is formed by eight steel pipe segments 10, the arc length of each protective steel plate 11 is 824 mm.

[0058] As another implementation method, such as Figure 5 As shown, each layer of the spliced ​​steel caisson 100 is formed by six steel pipe segments 10. Similarly, when the width of the circumferential rib 12 and the longitudinal rib 13 is 50mm, and the inner diameter of the entire spliced ​​steel caisson 100 is 2000mm, the outer diameter of the entire spliced ​​steel caisson 100 is 2100mm. When each layer of the spliced ​​steel caisson 100 is formed by six steel pipe segments 10, the arc length of each protective steel plate 11 is 1099mm.

[0059] It is understood that in other embodiments, each layer of the spliced ​​steel caisson 100 may also be composed of 4 or 5, 7, 9, 10 or other individual steel pipe segments 10.

[0060] Preferably, such as Figure 1 As shown in the figure, the longitudinal ribs 13 of two adjacent steel segment units 10 of the spliced ​​steel caisson 100 in this embodiment are staggered. As shown in 1, the longitudinal ribs 13 of the first layer of steel segment unit 10 and the longitudinal ribs 13 of the second layer of steel segment unit 10 are not on the same vertical line but are staggered, which can increase the compressive strength of the circumferential ribs 12 of each layer of steel segment unit 10.

[0061] The spliced ​​steel caisson 100 in this embodiment has the following specific features:

[0062] 1. Prefabrication in segments: Standardized steel pipe segments are manufactured in advance for easy transportation and storage.

[0063] 2. On-site assembly: Based on the actual dimensions of the foundation pit, steel pipe segments are assembled layer by layer on the ground or inside the pit and fixed with bolts or welding.

[0064] 3. Segmented sinking: After assembly, the steel segments are gradually sunk to the predetermined depth using mechanical or manual assistance. The number of individual steel segments can be adjusted at any time during the process to adapt to geological changes.

[0065] 4. Mechanized Collaboration: Combining small hoisting equipment or automated machinery to complete assembly and sinking reduces reliance on large cranes and improves construction flexibility.

[0066] The above description is merely an example to clearly illustrate the present utility model and is not intended to limit the patent scope of the present utility model. It is impossible to exhaustively list all the embodiments here. All equivalent structural transformations made using the content of the technical solution of the present utility model under the concept of the present utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A type of modular steel caisson, characterized in that, The spliced ​​steel caisson includes multiple prefabricated steel pipe segments, which are spliced ​​together to form a cylindrical structure. Two adjacent steel pipe segments are connected by connectors or welded together. Each of the aforementioned steel segment units comprises: Steel wall plate; Circumferential ribs are respectively disposed at the upper and lower ends of the protective steel plate, and a plurality of first connecting holes are spaced apart on the circumferential ribs; Longitudinal ribs are respectively disposed at the left and right ends of the protective steel plate, and multiple second connecting holes are spaced apart on the longitudinal ribs; Two adjacent steel pipe segments are spliced ​​together through the first connecting hole and connector on two adjacent circumferential ribs. Two adjacent steel pipe segments are spliced ​​together through the second connecting holes and connectors on the two adjacent longitudinal ribs.

2. The modular steel caisson according to claim 1, characterized in that, The length, height, and thickness of the individual steel pipe segments can be prefabricated and adjusted.

3. The modular steel caisson according to claim 1, characterized in that, The spliced ​​steel caisson is divided into multiple layers in the vertical direction, and each layer is composed of at least two steel pipe segments.

4. The modular steel caisson according to claim 3, characterized in that, Each layer of the spliced ​​steel caisson is composed of eight individual steel pipe segments.

5. The modular steel caisson according to claim 1, characterized in that, The longitudinal ribs of the two adjacent steel pipe segments of the spliced ​​steel caisson are staggered.

6. The spliced ​​steel caisson according to claim 1, characterized in that, The connector is a high-strength connecting bolt.

7. The modular steel caisson according to claim 1, characterized in that, The height of the steel pipe segment is 300mm.

8. The modular steel caisson according to claim 1, characterized in that, The thickness of the circumferential ribs and longitudinal ribs is greater than the thickness of the retaining steel plate.

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