Anti-sliding connecting device for diagonal bracing end steel enclosing purlin and diaphragm wall
By welding ribs on the outside of the main body of the steel purlin at the end of the oblique brace and connecting them with the anti-slip connection device of the ground connecting wall, the problem of sliding between the steel purlin and the ground connecting wall in deep foundation pit projects is solved, the construction efficiency and foundation pit stability are improved, and the cost and deformation risk are reduced.
Patent Information
- Application Number
- CN202421649682.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-07-12
AI Technical Summary
In deep foundation pit projects, the steel purlin at the oblique brace end needs to be removed after the foundation pit construction, which is time-consuming and labor-intensive and costly. At the same time, the steel purlin is prone to slip relative to the ground connection wall, resulting in stability problems.
A steel purlin at the oblique brace end is designed. By welding the ribs on the outside of the body as shear keys and connecting them with the anti-slip connection device of the ground connecting wall, the construction and removal process of the shear piers are avoided, and the ribs are directly welded to the body to ensure the stable connection between the steel purlin and the ground connecting wall.
It improves construction efficiency, reduces the exposure time of foundation pits, reduces the risk of foundation pit deformation, saves materials and construction costs, and effectively prevents uneven deformation of ground-connected walls and improves the stability of foundation pits.
Smart Images
Figure CN222771496U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steel enclosure purlins, and more specifically, to an anti-slip connection device for a steel enclosure purlin at an end of an inclined support and a ground-connected wall. Background Art
[0002] In the fields of civil engineering, building structure and subway construction, deep foundation pit engineering of two-story underground stations or open-cut sections is a common engineering project. In these projects, the stability of the foundation pit is crucial because it directly affects the safety and quality of the project. In order to ensure the stability of the foundation pit, a support system is usually required. One of the commonly used support systems is a support system with one concrete support and three steel supports. However, at the end of the foundation pit, diagonal braces need to be set because it is necessary to maintain the stability of the two perpendicular ground-connected walls at the same time.
[0003] In the prior art, in order to prevent uneven deformation of the ground-connected wall, a shear pier is usually set in the foundation pit, and one end of the diagonal brace is connected to the shear pier, and the other end is connected to the steel purlin. However, after the foundation pit construction is completed, the shear pier needs to be removed, which is time-consuming, labor-intensive, and costly. In addition, the axial force of the diagonal brace end is transmitted to the steel purlin. After the axial force is decomposed, the steel purlin tends to slide relative to the ground-connected wall. Therefore, how to keep the steel purlin stable and avoid or reduce its sliding tendency relative to the ground-connected wall is a technical problem to be solved by the present invention. Utility Model Content
[0004] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of the utility model does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.
[0005] In order to at least partially solve the above-mentioned problems, the utility model provides a steel purlin with an inclined brace end, comprising: a main body and a plurality of ribs arranged on one side of the main body, the other side of the main body is connected to the steel support, the ribs are arranged in a horizontal direction, the ribs are parallel to each other, one side of the ribs is connected to the main body, and the other side is inserted into the anti-slip connection device of the ground-connected wall.
[0006] Preferably, a purlin bracket is provided at the bottom of the steel purlin, and the purlin bracket is arranged on the ground-connected wall.
[0007] Preferably, the steel support and the main body are connected to the ground-connected wall via hangers.
[0008] Preferably, it also includes: a first plate, one side of the rib plate is connected to the first plate, and the other side is inserted into the ground-connected wall anti-slip connection device, a plurality of first holes are arranged on the first plate, a plurality of second holes are arranged on the main body, the number and position of the first holes and the second holes are adapted, a plurality of first connecting members are arranged on the first plate, the first connecting member passes through the first hole and is connected to the second hole, and the first plate is connected to the main body through the first connecting member.
[0009] Preferably, the second hole is a threaded hole, and the first connecting member is a screw.
[0010] Preferably, the rib is a rectangular steel plate, or a triangular steel plate, or a steel section.
[0011] A ground-connected wall anti-slip connection device comprises: a grooved steel plate embedded in the ground-connected wall, and embedded anchor bars for fixing the grooved steel plate to a reinforcement cage in the ground-connected wall, wherein a plurality of third holes are arranged on the grooved steel plate, the embedded anchor bars pass through the third holes and are connected to the reinforcement cage in the ground-connected wall, and the ribs of the steel purlins at the ends of the diagonal braces are located in the grooved steel plate and are connected to the grooved steel plate.
[0012] Preferably, the groove steel plate is composed of a first outer plate, a second outer plate, a first abutment plate, a second abutment plate, and a second plate, the first outer plate, the second outer plate, the first abutment plate, the second abutment plate, and the second plate are all arranged in a vertical direction, the first abutment plate and the second abutment plate are arranged on both sides of the second plate, the first outer plate is connected to one side of the second plate through the first abutment plate, the second outer plate is connected to the other side of the second plate through the second abutment plate, the rib plate is located between the first abutment plate and the second abutment plate, and the side wall of the body abuts against the first outer plate and the second outer plate.
[0013] Preferably, the first abutting plate and the second abutting plate are parallel, and the first outer plate, the second outer plate and the second plate are all arranged in a normal direction to the first abutting plate and the second abutting plate.
[0014] Preferably, the distance between the two opposite surfaces of the first abutting plate and the second abutting plate is T, and the distance between the two opposite side surfaces of the rib plate is t, wherein T is not less than t.
[0015] When T is greater than t, a filling piece is filled between the rib plate and the first abutment plate and the second abutment plate;
[0016] The distance between the two opposite surfaces of the two adjacent upper and lower ribs is d, and the distance between the upper and lower horizontal surfaces of the second plate is D, wherein D is greater than d.
[0017] Compared with the prior art, the present invention has at least the following beneficial effects:
[0018] The utility model welds ribs on the outside of the body as shear keys, and connects the ribs to the anti-slip connection device of the ground-connected wall, so as to avoid the body from slipping relative to the ground-connected wall under the action of horizontal force, thereby ensuring the stability of the support system provided by the utility model. Compared with the prior art, it is necessary to implement the construction of shear piers before the steel support and steel purlin are erected, and the shear piers need to be removed after the steel support and steel purlin are removed, which leads to the extension of the construction period, the increase of the exposure time of the foundation pit, and the problem of increased deformation of the foundation pit. The utility model adopts the method of welding the ribs to the body, avoiding the construction and removal process of the shear piers, greatly improving the construction efficiency, and also reducing the exposure time of the foundation pit, reducing the risk of deformation of the foundation pit, and at the same time, there is no need to set up large shear piers, thereby saving material costs and construction costs. The utility model pre-buries a groove steel plate in the ground-connected wall and sets ribs on the outside of the body, which can effectively prevent uneven deformation of the ground-connected wall, improve the stability of the foundation pit, and thus ensure the safety and quality of foundation construction.
[0019] The anti-slip connection device between the steel purlin at the end of the diagonal brace and the ground-connected wall described in the utility model, other advantages, objectives and features of the utility model will be partially reflected through the following description, and will also be partially understood by technical personnel in the field through research and practice of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0021] Figure 1 It is a structural schematic diagram of the anti-slip connection device between the steel purlin at the end of the diagonal brace (first embodiment) and the ground-connected wall described in the present invention.
[0022] Figure 2 It is an exploded view of the anti-slip connection device between the steel purlin at the end of the diagonal brace (first embodiment) and the ground-connected wall described in the utility model.
[0023] Figure 3 It is a schematic cross-sectional structure diagram of the anti-slip connection device between the steel purlin at the end of the diagonal brace (first embodiment) and the ground-connected wall described in the present invention.
[0024] Figure 4 It is a structural schematic diagram of the anti-slip connection device between the steel purlin at the end of the diagonal brace (second embodiment) and the ground-connected wall described in the present invention.
[0025] Figure 5It is an exploded view of the anti-slip connection device between the steel purlin at the end of the diagonal brace (second embodiment) and the ground-connected wall described in the present invention.
[0026] Figure 6 It is a schematic cross-sectional structure diagram of the anti-slip connection device between the steel purlin at the end of the diagonal brace (second embodiment) and the ground-connected wall described in the present invention.
[0027] Figure 7 This is a schematic diagram of the position between the steel purlin at the end of the diagonal brace and the ground-connected wall.
[0028] Figure 8 It is a schematic diagram of the connection between the steel purlin at the end of the diagonal brace and the anti-slip connection device of the ground-connected wall and the ground-connected wall described in the utility model.
[0029] In the figure: 1 main body, 2 rib plate, 3 steel support, 4 purlin bracket, 5 ground connecting wall, 6 hanger bar, 7 first plate, 8 first hole, 9 second hole, 10 first connecting piece, 11 groove steel plate, 12 embedded anchor bar, 13 third hole, 14a first outer side plate, 14b second outer side plate, 15a first abutting plate, 15b second abutting plate, 16 second plate. DETAILED DESCRIPTION
[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.
[0031] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.
[0032] like Figure 1-Figure 8 As shown, the utility model provides a steel purlin with an oblique brace end, comprising: a body 1 and a plurality of ribs 2 arranged on one side of the body 1, the other side of the body 1 is connected to a steel support 3, the ribs 2 are arranged in a horizontal direction and are equidistantly arranged from top to bottom, as shown in FIG. Figure 3As shown, each rib plate 2 is parallel to each other, one side of the rib plate 2 is connected to the body 1, and the other side is inserted into the anti-slip connection device of the ground-connected wall. The utility model welds the rib plate 2 on the outside of the body 1 as a shear key, and connects the rib plate 2 to the anti-slip connection device of the ground-connected wall, so as to avoid the body 1 from slipping relative to the ground-connected wall 5 under the action of horizontal force, thereby ensuring the stability of the support system provided by the utility model. Compared with the prior art, it is necessary to implement the construction of shear piers before the steel support and steel purlin are erected, and the shear piers need to be removed after the steel support and steel purlin are removed, resulting in an extension of the construction period, an increase in the exposure time of the foundation pit, and the problem of increased deformation of the foundation pit. The utility model adopts the method of welding the rib plate 2 to the body 1, avoiding the construction and removal process of the shear pier, greatly improving the construction efficiency, and also reducing the exposure time of the foundation pit, reducing the risk of deformation of the foundation pit, and at the same time, there is no need to set up large shear piers, thereby saving material costs and construction costs. A purlin bracket 4 is provided at the bottom of the steel purlin, and the purlin bracket 4 is provided on the ground-connected wall 5. The steel support 3 and the body 1 are connected to the ground-connected wall 5 through the hanging rod 6. During the construction process, the purlin bracket 4 and the hanging rod 6 can provide support for the body 1 in the vertical direction to avoid vertical displacement.
[0033] In the previous embodiment, we provide a connection method of welding the rib plate 2 to the main body 1. Because this embodiment needs to be welded on the main body 1, the installation accuracy requirements for the rib plate 2 are relatively high (the installation position of the rib plate 2 needs to be accurately calculated, otherwise there will either be a gap between the two adjacent main bodies 1, or they will be pressed together, resulting in the rib plate 2 being unable to be connected to the ground-connected wall anti-slip connection device). In addition, during the transportation of the main body 1, the rib plate 2 may be damaged by bumps. At the same time, the connection is made by welding, so the use scope of the main body 1 is limited to the ground-connected wall 5 provided with the ground-connected wall anti-slip connection device, and the use scope is relatively limited. To this end, we provide another embodiment, which also includes: a first plate 7, one side of the rib plate 2 (hereinafter referred to as the rear side of the rib plate 2) is connected to the first plate 7, usually by welding, and the other side (hereinafter referred to as the front side of the rib plate 2) is inserted into the anti-slip connection device of the ground-connected wall, a plurality of first holes 8 are provided on the first plate 7, and a plurality of second holes 9 are provided on the main body 1, and the number and position of the first holes 8 and the second holes 9 are adapted, a plurality of first connecting members 10 are provided on the first plate 7, the first connecting member 10 passes through the first hole 8 and is connected with the second hole 9, and the first plate 7 is connected to the main body 1 through the first connecting member 10. In this embodiment, the fixed connection between the rib plate 2 and the body 1 is changed from the previous embodiment to a detachable connection, so that the rib plate 2 and the body 1 can be transported separately, and can be assembled on site when in use, so that the body 1 is no longer limited to being applied to the ground-connected wall 5 equipped with the ground-connected wall anti-slip connection device, but can also be used as an ordinary steel purlin, which increases the scope of use of the body 1. Similarly, ordinary steel purlins can also be used as the body 1, and only a second hole 9 needs to be added thereon. The second hole 9 can be a threaded hole, and the first connecting member 10 can be a screw. The rib plate 2 is a rectangular steel plate, a triangular steel plate, or a steel section.
[0034] A ground-connected wall anti-slip connection device includes: a grooved steel plate 11 pre-buried in the ground-connected wall 5, and pre-buried anchor bars 12 for fixing the grooved steel plate 11 to the reinforcement cage in the ground-connected wall 5. Before casting the ground-connected wall 5, the grooved steel plate 11 is connected to the reinforcement cage of the ground-connected wall 5 in advance by the pre-buried anchor bars 12, so that after casting the ground-connected wall 5, the ground-connected wall 5 with the grooved steel plate 11 embedded therein can be obtained. The grooved steel plate 11 is provided with a plurality of third holes 13, the pre-buried anchor bars 12 pass through the third holes 13, are plugged and welded, and are connected to the reinforcement cage in the ground-connected wall 5, and the ribs 2 of the steel purlin at the end of the diagonal brace are located in the grooved steel plate 11 and are connected to the grooved steel plate 11. The groove steel plate 11 is composed of a first outer plate 14a, a second outer plate 14b, a first abutment plate 15a, a second abutment plate 15b, and a second plate 16. The first outer plate 14a, the second outer plate 14b, the first abutment plate 15a, the second abutment plate 15b, and the second plate 16 are all arranged in a vertical direction. The first abutment plate 15a and the second abutment plate 15b are arranged on both sides of the second plate 16. The first outer plate 14a is connected to one side of the second plate 16 through the first abutment plate 15a, and the second outer plate 14b is connected to the other side of the second plate 16 through the second abutment plate 15b. The rib plate 2 is located between the first abutment plate 15a and the second abutment plate 15b, and the side wall of the body 1 abuts against the first outer plate 14a and the second outer plate 14b. Because the first outer plate 14a and the second outer plate 14b need to abut against the side wall of the body 1, in order to ensure that the side wall of the body 1 can fit the wall surface of the ground connecting wall 5, the first outer plate 14a and the second outer plate 14b need to be embedded in the ground connecting wall 5, such as Figure 8 As shown. The first abutment plate 15a and the second abutment plate 15b are parallel, and the first outer plate 14a, the second outer plate 14b and the second plate 16 are all arranged normally to the first abutment plate 15a and the second abutment plate 15b. As a result, the grooved steel plate 11 is in an Ω shape. When the steel purlin at the end of the diagonal brace is connected to the anti-slip connection device of the ground-connected wall, the front side of the rib plate 2 is inserted into the groove formed by the first abutment plate 15a and the second abutment plate 15b until the front side of the rib plate 2 abuts against the second plate 16. The distance between the two opposite surfaces of the first abutment plate 15a and the second abutment plate 15b is T, and the distance between the two opposite side surfaces (left side and right side) of the rib plate 2 is t, where T is not less than t.
[0035] When T is equal to t, the precision requirement for the rib plate 2 and the groove steel plate 11 is high, the processing cost is also high, and it is basically difficult to achieve, so T is usually made greater than t;
[0036] When T is greater than t, the rib plate 2 and the first abutment plate 15a and the second abutment plate 15b can be conveniently plugged in, but correspondingly, there may be a situation where the left side (or right side) of the rib plate 2 cannot abut against the first abutment plate 15a (or the second abutment plate 15b). In order to ensure that the left side (or right side) of the rib plate 2 can achieve surface contact with the first abutment plate 15a (or the second abutment plate 15b) to avoid uneven force due to point contact, which may damage the first abutment plate 15a (or the second abutment plate 15b), after the rib plate 2 is fully inserted into the groove steel plate 11, a filling piece is provided between the rib plate 2 and the first abutment plate 15a and the second abutment plate 15b to increase the contact area between the rib plate 2 and the first abutment plate 15a and the second abutment plate 15b. Usually, a steel plate, an L-shaped angle iron, or any existing technology and commercially available product that can fill the gap and transmit force can be directly inserted.
[0037] The distance between the two opposite surfaces of the two adjacent ribs 2 (the bottom surface of the rib 2 located above and the top surface of the rib 2 located below) is d, and the distance between the two horizontal surfaces of the second plate 16 (i.e., the height of the second plate 16) is D, where D is greater than d. Figure 5 As shown, the grooved steel plate 11 can accommodate at least two ribs 2;
[0038] The distance between the two vertical surfaces of the first plate 7 (i.e., the left side and the right side of the first plate 7) is q, where q is not greater than T. Therefore, if the steel purlin at the end of the diagonal brace adopts the second embodiment, the first plate 7 can be embedded between the first abutment plate 15a and the second abutment plate 15b, thereby ensuring that the side wall of the main body 1 can fit on the surface of the ground-connected wall 5.
[0039] Through the design of the above structure, one or two grooved steel plates 11 can be embedded in each ground-connected wall 5. The embedded design of the grooved steel plates 11 allows the main body 1 and the ground-connected wall 5 to be installed closely, thereby effectively preventing the slippage between the ground-connected wall 5 and the main body 1 and improving the stability of the support system. Multiple layers of support (i.e., multiple layers of main body 1) can also be set on the inside of the ground-connected wall 5. Each ground-connected wall 5 can be supported by multiple steel supports 3 in the form of layered support to maintain the overall force stability of the ground-connected wall 5, which can effectively reduce the deformation of surrounding structures caused by foundation pit excavation and ensure the safety of foundation pit construction. The embedded grooved steel plates 11 can effectively disperse and absorb the load from the steel purlins at the ends of the diagonal braces, so that each section of the steel purlin can evenly bear the load. By pre-embedding the grooved steel plate 11 on the ground-connected wall 5 and welding the rib 2 as a shear key at the corresponding position of the steel purlin at the end of the diagonal brace, a reliable connection between the steel purlin and the ground-connected wall is achieved, effectively preventing slippage between the main body 1 and the ground-connected wall 5, thereby optimizing the support system and improving the stability of the foundation pit.
[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0041] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0042] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.
Claims
1. A steel purlin with diagonal bracing ends, characterized in that: include: A main body (1) and a plurality of ribs (2) arranged on one side of the main body (1); the other side of the main body (1) is connected to a steel support (3); the ribs (2) are arranged in a horizontal direction; the ribs (2) are parallel to each other; one side of the ribs (2) is connected to the main body (1); and the other side is inserted into an anti-slip connection device for a ground-connected wall.
2. The steel purlin at the end of the diagonal brace according to claim 1, characterized in that: A purlin bracket (4) is provided at the bottom of the steel purlin, and the purlin bracket (4) is arranged on the ground-connected wall (5).
3. The steel purlin at the end of the diagonal brace according to claim 1, characterized in that: The steel support (3) and the main body (1) are both connected to the ground-connected wall (5) via suspension rods (6).
4. The steel purlin at the end of the diagonal brace according to claim 1, characterized in that: Also includes: A first plate (7), one side of the rib plate (2) is connected to the first plate (7), and the other side is inserted into the anti-slip connection device of the ground-connected wall, a plurality of first holes (8) are provided on the first plate (7), a plurality of second holes (9) are provided on the main body (1), the number and position of the first holes (8) and the second holes (9) are adapted to each other, a plurality of first connecting members (10) are provided on the first plate (7), the first connecting member (10) passes through the first hole (8) and is connected to the second hole (9), and the first plate (7) is connected to the main body (1) via the first connecting member (10).
5. The steel purlin at the end of the diagonal brace according to claim 4, characterized in that: The second hole (9) is a threaded hole, and the first connecting member (10) is a screw.
6. The steel purlin at the end of the diagonal brace according to claim 1, characterized in that: The rib plate (2) is a rectangular steel plate, or a triangular steel plate, or a steel section.
7. A ground-connected wall anti-slip connection device, characterized in that: include: A grooved steel plate (11) embedded in a ground-connected wall (5), and embedded anchor bars (12) for fixing the grooved steel plate (11) to a reinforcement cage inside the ground-connected wall (5); a plurality of third holes (13) are provided on the grooved steel plate (11); the embedded anchor bars (12) pass through the third holes (13) and are connected to the reinforcement cage inside the ground-connected wall (5); the ribs (2) of the steel purlin at the end of the diagonal brace as claimed in any one of claims 1 to 6 are located in the grooved steel plate (11) and are connected to the grooved steel plate (11).
8. The anti-slip connection device for ground-connected wall according to claim 7, characterized in that: The groove steel plate (11) is composed of a first outer plate (14a), a second outer plate (14b), a first abutting plate (15a), a second abutting plate (15b), and a second plate (16). The first outer plate (14a), the second outer plate (14b), the first abutting plate (15a), the second abutting plate (15b), and the second plate (16) are all arranged in a vertical direction. The first abutting plate (15a) and the second abutting plate (15b) are arranged on both sides of the second plate (16). The first outer plate (14a) is connected to one side of the second plate (16) through the first abutting plate (15a), and the second outer plate (14b) is connected to the other side of the second plate (16) through the second abutting plate (15b). The rib plate (2) is located between the first abutting plate (15a) and the second abutting plate (15b). The side wall of the body (1) abuts against the first outer plate (14a) and the second outer plate (14b).
9. The anti-slip connection device for ground-connected wall according to claim 8, characterized in that: The first abutment plate (15a) and the second abutment plate (15b) are parallel, and the first outer plate (14a), the second outer plate (14b) and the second plate (16) are all arranged in a normal direction to the first abutment plate (15a) and the second abutment plate (15b).
10. The anti-slip connection device for ground-connected wall according to claim 9, characterized in that: The distance between the two opposite surfaces of the first abutting plate (15a) and the second abutting plate (15b) is T, and the distance between the two opposite side surfaces of the rib plate (2) is t, wherein T is not less than t. When T is greater than t, a filling piece is filled between the rib plate (2) and the first abutment plate (15a) and the second abutment plate (15b); The distance between two opposite surfaces of two adjacent upper and lower rib plates (2) is d, and the distance between two upper and lower horizontal surfaces of the second plate (16) is D, wherein D is greater than d.