Elliptical assembly type supporting module rigid connection system

Abstract

The utility model relates to a rigid connection system for oval assembly type supporting modules, and belongs to the technical field of foundation pit supporting. The supporting structure is of an oval annular closed structure composed of a plurality of supporting modules and comprises channel steel, channel end plates, C-shaped keels, arc-shaped lining plates, rectangular lining plates, side connecting plates and H-shaped steel. The groove-shaped steel, the groove-shaped end plates and the C-shaped keels are welded to form the framework and serve as main stress components, the groove-shaped steel is welded to the upper end and the lower end of the framework, the groove-shaped end plates are welded to the left side and the right side of the framework, the stiffening ribs are the C-shaped keels and welded into the framework, and the arc-shaped lining plates and the rectangular lining plates are welded to the outer side of the framework and play a role in soil body maintenance. The H-shaped steel is connected to the bottoms of the lining plates and the side connecting plates through bolts, the groove-shaped steel, the groove-shaped end plates, the C-shaped keels, the arc-shaped lining plates and the rectangular lining plates are welded to form a supporting module, and the side connecting plates are connected with the groove-shaped end plates through bolts. The utility model can effectively solve the problems of connection, rigidity, construction and period of the support module.

Description

Technical Field

[0001] The utility model relates to an elliptical assembled support module rigid connection system, belonging to the technical field of foundation pit support. Background Art

[0002] In recent years, in the pipe jacking projects of municipal, water supply and drainage, electricity, gas and other pipelines, the shaft excavation method is a common way to deal with buildings encountered in the pipe jacking project, and the support design of the shaft is the focus of the shaft design. With the needs of social development, the buried depth of the support structure is getting deeper and deeper, and the construction technology requirements are becoming simpler and simpler. The assembled support structure is widely used. For example, CN212742573U discloses an assembled support structure for the pipe jacking work well and CN207673349U discloses an assembled support structure of a chessboard distributed anchor cable and a concrete slab. The assembled support system faces the problem of connection between modules. The current connection methods include bolt connection, welding connection, sleeve grouting connection, self-locking connection node and other connection methods. Bolt connection and welding connection require pre-embedded parts in the prefabricated board, which is relatively simple during construction; sleeve grouting connection technology is relatively mature, but the construction period is long, and accurate alignment is required during construction, and the construction is complicated; self-locking connection node is to insert the upper and lower modules at the corresponding positions to achieve reliable connection, without additional connection operation, but the connection part may be displaced. The traditional support steel liner connection has the disadvantages of poor overall structural stiffness, complex construction, and long period. Therefore, it is necessary to design a prefabricated support module rigid connection system to solve the above problems. Utility Model Content

[0003] In view of the above problems existing in the prior art, the utility model proposes an elliptical assembled support module rigid connection system to solve the problems of assembled support module connection, rigidity, construction and cycle.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A rigid connection system for elliptical assembled support modules, the rigid connection system includes a multi-layer support structure, each layer of the support structure includes channel steels and channel end plates welded to both sides of the channel steels connected in sequence from top to bottom, a C-shaped keel is welded between the upper and lower channel steels, the channel steels, the channel end plates and the C-shaped keel are welded to form a skeleton, an arc lining plate or a rectangular lining plate is welded to the outside of the skeleton, and the outer walls of the arc lining plate and the rectangular lining plate are fitted with the inner wall of the foundation pit; the upper and lower support structures are connected by upper and lower bolts through the channel steel at the lower part of the skeleton and the channel steel at the upper part of the next skeleton; each layer of adjacent channel end plates is bolted together by side connecting plates; the arc lining plate, the rectangular lining plate and the bottom of the side connecting plate of each layer of the support structure are bolted to H-shaped steel, and the upper and lower ends of the side connecting plate are respectively connected to the H-shaped steel.

[0006] Furthermore, the grooves on the upper and lower channel steels are arranged opposite to each other; and the grooves on the channel end plates on both sides are arranged opposite to each other.

[0007] Furthermore, a plurality of bolts are provided on the side connecting plate and the channel steel.

[0008] Furthermore, the bolts include bolts at three different positions, wherein two rows of bolts are arranged in the middle of the side connecting plate, which are respectively connected to the channel-shaped end plates; a row of bolts are arranged on the upper and lower sides of the channel-shaped steel, which are respectively connected to the upper and lower H-shaped steels; a row of bolts are arranged on the upper and lower sides of the side connecting plate, which are respectively connected to the upper and lower H-shaped steels.

[0009] Furthermore, the channel steel includes straight and curved shapes. The straight channel steel, the channel end plate, the C-shaped keel and the rectangular liner constitute a straight support module; the curved channel steel, the channel end plate, the C-shaped keel and the curved liner constitute a curved support module; the straight support module and the curved support module together constitute a layer of elliptical prefabricated support module rigid connection system; the upper and lower multi-layer elliptical prefabricated support module rigid connection system are connected into a whole by bolts.

[0010] Furthermore, the channel steel is hot-rolled steel, which is connected to the C-shaped keel and the channel end plate through welds.

[0011] Furthermore, the grooved end plate is made of hot-rolled steel, and no bolt holes are arranged on the outer side of the grooved end plate, but bolt holes are arranged on the inner side.

[0012] Furthermore, the side connecting plates are connected to the inner side of each layer of the supporting structure by bolts.

[0013] Furthermore, the channel steel is connected and fixed to the middle web of the H-shaped steel by bolts.

[0014] The utility model can achieve the following technical effects:

[0015] The utility model proposes an elliptical assembled support module rigid connection system, which has the following advantages:

[0016] 1. Compared with the traditional construction method, the utility model adopts an assembled structure, which is easy to install and disassemble, and improves the on-site construction efficiency.

[0017] 2. The setting of the C-shaped keel of the utility model improves the overall stability of the structure, is light in weight, high in strength, and saves steel. At the same time, the setting of the H-shaped steel can further improve the stability of the supporting structure.

[0018] 3. The grooved end plates arranged on both sides of the grooved steel of the utility model realize a rigid connection compared with the connection of the traditional support module, and the setting of the side connecting plates effectively improves the bending rigidity of the connection part of the support module. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the rigid connection system of the elliptical assembled support module of the utility model;

[0020] Figure 2 This is a schematic diagram of arc-shaped frame welding of the utility model;

[0021] Figure 3 This is a schematic diagram of the welding of a rectangular frame of the utility model;

[0022] Figure 4 This is a schematic diagram of the arc-shaped frame welding completion of the utility model;

[0023] Figure 5 This is a schematic diagram of the completion of welding of the rectangular frame of the utility model;

[0024] Figure 6 This is a schematic diagram of welding the arc lining plate and the arc frame of the utility model;

[0025] Figure 7 This is a schematic diagram of welding a rectangular lining plate and a rectangular frame of the utility model;

[0026] Figure 8 This is a schematic diagram of the arc lining plate and arc frame being welded together in the utility model;

[0027] Fig. 9 This is a schematic diagram of the welding of the rectangular lining plate and the rectangular frame of the utility model;

[0028] Fig.10 This is a detailed schematic diagram of the bolt connection of the side connecting plate of the utility model;

[0029] Fig.11 This is a schematic diagram of the bolt connection completion of the side connecting plate of the utility model;

[0030] Fig.12 This is a schematic diagram of the installation of the H-shaped steel bolt of the utility model;

[0031] Fig.13 This is the installation completion diagram of the H-shaped steel bolt of the utility model;

[0032] Fig.14 This is a diagram showing the overall assembly of the elliptical support structure of the utility model. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-14The utility model is further described in detail with specific implementations to facilitate a clear understanding of the utility model, but they do not constitute a limitation on the utility model.

[0034] As attached Figure 1-14 As shown, an elliptical assembled support module rigid connection system of this embodiment includes a multi-layer support structure, each layer of the support structure includes a channel steel 1 and a channel end plate 2 welded to both sides of the channel steel 1, the grooves on the upper and lower channel steels 1 are arranged oppositely, and the grooves on the channel end plates 2 on both sides are arranged oppositely. A C-shaped keel 3 is welded between the upper and lower channel steels 1, and the channel steel 1, the channel end plate 2 and the C-shaped keel 3 are welded to form a skeleton, such as Figure 1-5 As shown, it is divided into an arc-shaped skeleton and a rectangular skeleton.

[0035] like Figure 6-9 As shown, an arc lining plate 4 or a rectangular lining plate 5 is welded on the outside of the frame, and the outer wall of the arc lining plate 4 and the rectangular lining plate 5 fits the inner wall of the foundation pit. The upper and lower supporting structures are connected by upper and lower bolts through the channel steel 1 of the lower part of the frame and the channel steel 1 of the upper part of the next frame.

[0036] like Figure 10-11 As shown, each layer of adjacent grooved end plates 2 is bolted together by side connecting plates 7. Figure 12-13 As shown, the bottom of the arc lining plate 4, the rectangular lining plate 5 and the side connecting plate 7 of each layer of the supporting structure are bolted to the H-shaped steel 6, and the upper and lower ends of the side connecting plate 7 are respectively connected to the H-shaped steel 6. Among them, a plurality of bolts are arranged on the side connecting plate 7 and the channel steel 1, including bolts at three different positions, wherein two rows of bolts are arranged in the middle of the side connecting plate 7, respectively connected to the channel end plate 2. A row of bolts are arranged on the upper and lower sides of the channel steel 1, respectively connected to the upper and lower H-shaped steel 6, especially connected and fixed together with the middle web of the H-shaped steel 6 by bolts. A row of bolts are arranged on the upper and lower sides of the side connecting plate 7, respectively connected to the upper and lower H-shaped steel 6.

[0037] In this embodiment, the channel steel 1 includes a straight line and an arc line. The straight line channel steel 1, the channel end plate 2, the C-shaped keel 3, and the rectangular liner 5 constitute a straight line support module. The arc line channel steel 1, the channel end plate 2, the C-shaped keel 3, and the arc line 4 constitute an arc line support module. The straight line support module and the arc line support module together constitute a layer of elliptical assembled support module rigid connection system. The upper and lower multi-layer elliptical assembled support module rigid connection system is connected into a whole by bolts, such as Fig.14 shown.

[0038] In this embodiment, the channel steel 1 is hot-rolled steel, which is connected to the C-shaped keel 3 and the channel end plate 2 by welding. The channel end plate 2 is also hot-rolled steel. Under the action of the foundation pit soil pressure, the outer side of the support system connection part is compressed and the inner side is tensile, so no bolt holes are set on the outer side of the channel end plate 2, and bolt holes are set on the inner side. In addition, the side connecting plate 7 is connected to the inner side of each layer of the support structure by bolts.

[0039] In this embodiment, the C-shaped keel 3 is light in weight, has excellent cross-sectional properties, and has high strength. Compared with traditional channel steel, the same strength can save materials and improve the overall stability of the structure. The arc liner 4 and the rectangular liner 5 are easier to process than the corrugated liner, saving materials. Compared with the traditional support module connection, the cross-sectional form of the support module connection part of the utility model presents an H-shaped cross-section. By increasing the cross-sectional inertia modulus of the connection part, the bending stiffness of the connection part can be improved, and the bending stiffness of the support system can be effectively enhanced.

[0040] Example 2

[0041] The installation process of the above embodiment 1 includes the following steps:

[0042] S1. Prefabricate components in the factory, and directly form the channel steel 1, the channel end plate 2, the C-shaped keel 3, the arc lining plate 4, the rectangular lining plate 5, the H-shaped steel 6 and the side connecting plate 7.

[0043] S2. The channel steel 1 is directly connected with the channel end plate 2 and the C-shaped steel 3 by welding in the factory to form a channel frame, and the arc lining plate 4 or the rectangular lining plate 5 is connected with the channel frame by welding to form a support plate, and a linear support module and an arc support module are formed.

[0044] S3. The assembled straight support modules and arc support modules, the side connecting plates 7 and the H-shaped steels 6 are transported to the construction site, and the H-shaped steels 6 are assembled.

[0045] S4. Align the bolt holes of the side connecting plate 7 with the bolt holes of the grooved end plates 2 at both ends of the supporting plate and perform bolt connection.

[0046] S5. Connect the linear support module and the arc support module connected with the side connection plate 7 to the assembled H-shaped steel 6 through bolts until an elliptical ring closed structure is formed, forming a layer of elliptical assembled support module rigid connection system. The upper and lower multi-layer elliptical assembled support module rigid connection system is connected as a whole through bolts to complete the assembly of the system.

[0047] In this embodiment, the installation and construction process can reduce the construction process compared to the traditional steel liner, and the operation is simple, the degree of industrialization is high, and the construction speed is fast. Each ribbed support steel liner is lighter than the traditional steel liner, which is convenient for workers to transport.

[0048] The above is only a preferred embodiment of the utility model, and does not impose any formal restrictions on the structure of the utility model. The layout type and the number of uses of the utility model are not limited to this example, and can be optimized and selected according to the actual project. Any modification, equivalent change and decoration of the above embodiment based on the technical principle of the utility model that does not deviate from the content of the technical solution of the utility model is still within the scope of the technical solution of the utility model.

Claims

1. An elliptical assembled support module rigid connection system, characterized in that: The rigid connection system comprises a multi-layer support structure, each layer of the support structure comprises channel steel (1) and channel end plates (2) welded to both sides of the channel steel (1) connected in sequence from top to bottom, a C-shaped keel (3) is welded between the upper and lower channel steels (1), the channel steel (1), the channel end plates (2) and the C-shaped keel (3) are welded to form a frame, an arc lining plate (4) or a rectangular lining plate (5) is welded to the outside of the frame, and the outer side of the arc lining plate (4) and the rectangular lining plate (5) are The wall is fitted with the inner wall of the foundation pit; the upper and lower supporting structures are connected by upper and lower bolts through the channel steel (1) at the lower part of the frame and the channel steel (1) at the upper part of the frame of the next layer; each layer of adjacent channel end plates (2) are bolted together through side connecting plates (7); the arc lining plate (4) and the rectangular lining plate (5) and the bottom of the side connecting plate (7) of each layer of the supporting structure are bolted to H-shaped steel (6), and the upper and lower ends of the side connecting plate (7) are respectively connected to the H-shaped steel (6).

2. The elliptical assembled support module rigid connection system according to claim 1, characterized in that: The grooves on the upper and lower channel steels (1) are arranged opposite to each other; and the grooves on the channel end plates (2) on both sides are arranged opposite to each other.

3. The elliptical assembled support module rigid connection system according to claim 1, characterized in that: A plurality of bolts are provided on the side connecting plate (7) and the channel steel (1).

4. The elliptical assembled support module rigid connection system according to claim 3, characterized in that: The bolts include bolts at three different positions, wherein two rows of bolts are arranged in the middle of the side connecting plate (7) and are respectively connected to the channel-shaped end plate (2); a row of bolts are arranged on the upper and lower sides of the channel-shaped steel (1) and are respectively connected to the upper and lower H-shaped steels (6); a row of bolts are arranged on the upper and lower sides of the side connecting plate (7) and are respectively connected to the upper and lower H-shaped steels (6).

5. The elliptical assembled support module rigid connection system according to claim 1, characterized in that: The channel steel (1) includes a straight-line type and an arc-line type. The straight-line channel steel (1) and the channel end plate (2), the C-shaped keel (3) and the rectangular lining plate (5) form a straight-line support module; the arc-line channel steel (1) and the channel end plate (2), the C-shaped keel (3) and the arc-shaped lining plate (4) form an arc-shaped support module; the straight-line support module and the arc-shaped support module together form a layer of elliptical assembled support module rigid connection system; the upper and lower multi-layer elliptical assembled support module rigid connection systems are connected into a whole by bolts.

6. The elliptical assembled support module rigid connection system according to claim 1, characterized in that: The channel steel (1) is hot-rolled steel and is connected to the C-shaped keel (3) and the channel end plate (2) via a weld.

7. The elliptical assembled support module rigid connection system according to claim 1, characterized in that: The grooved end plate (2) is made of hot-rolled steel, and no bolt holes are arranged on the outer side of the grooved end plate (2), but bolt holes are arranged on the inner side.

8. The elliptical assembled support module rigid connection system according to claim 1, characterized in that: The side connection plate (7) is connected to the inner side of each layer of the supporting structure by means of bolts.

9. The elliptical assembled support module rigid connection system according to claim 1, characterized in that: The channel steel (1) is connected and fixed to the middle web of the H-shaped steel (6) by means of bolts.

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