Stent attachment structure capable of releasing vertical constraint

Abstract

The utility model discloses a support attachment structure capable of releasing vertical constraint, which comprises a pre-buried finish rolling deformed steel bar, a connecting plate and an attachment horizontal rod, the pre-buried finish rolling deformed steel bar comprises a pre-buried part pre-buried in a pier column and a connecting part protruding out of the pier column, the connecting part of the pre-buried finish rolling deformed steel bar is detachably connected with the connecting plate through a threaded connecting structure, one end of the attached horizontal rod is fixedly connected with the middle of the connecting plate, and the other end of the attached horizontal rod is fixedly connected with the steel pipe stand column. The problems that an existing embedded part is a common steel bar embedded part, an embedded steel bar and an embedded plate are of an integrated structure, and consequently the embedded plate outside a pier stud cannot be dismantled in the later period are solved.

Description

Technical Field

[0001] The utility model relates to the field of structures for bridge construction, in particular to a bracket attachment structure capable of releasing vertical constraints. Background Technique

[0002] The beam-column combined bracket structure is widely used in the field of bridge construction. Generally, in order to improve the stability of steel pipe columns during design, it is necessary to consider connecting the steel pipe columns to the pier columns of the main structure. The current conventional method is to use ordinary steel bar embedded parts to be pre-embedded in the pier column steel bar framework in advance, and then the pier column concrete is poured. Then, attachment rods are welded to the embedded plate of the ordinary steel bar embedded part to connect with the steel pipe column. It is found during the construction process that there are still certain drawbacks in this attachment form. The main problem is that the embedded parts used are ordinary steel bar embedded parts, and the embedded steel bars and the embedded plate are an integral structure, resulting in the inability to remove the embedded plate outside the pier column in the later stage. This will affect the appearance of the concrete pier column and cause waste of materials at the same time. Content of the Utility Model

[0003] The purpose of the utility model is to provide a bracket attachment structure capable of releasing vertical constraints, and solve the problem that the existing embedded parts use ordinary steel bar embedded parts, and the embedded steel bars and the embedded plate are an integral structure, resulting in the inability to remove the embedded plate outside the pier column in the later stage.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A bracket attachment structure capable of releasing vertical constraints includes embedded fine rolled threaded steel, a connecting plate and an attachment horizontal bar. The embedded fine rolled threaded steel includes an embedded part embedded in the pier column and a connecting part protruding outside the pier column. The connecting part of the embedded fine rolled threaded steel is detachably connected to the connecting plate through a threaded connection structure. One end of the attachment horizontal bar is fixedly connected to the middle of the connecting plate, and the other end of the attachment horizontal bar is fixedly connected to the steel pipe column.

[0006] In this solution, the original ordinary steel bar embedded parts are changed to the structure of embedded fine rolled threaded steel and a connecting plate, and the two structures are detachably connected through a threaded connection structure. In this way, only the embedded fine rolled threaded steel is finally consumed, greatly saving the construction cost, having high economic benefits, and not overly affecting the appearance of the concrete pier column.

[0007] As a further preference of the utility model, the length of the connecting part of the embedded fine rolled threaded steel is 10 cm.

[0008] As a further preference of the present utility model, the threaded connection structure includes strip-shaped holes and nuts. The strip-shaped holes are opened at the four corners of the connecting plate, and the opening direction of the strip-shaped holes is perpendicular to the bottom surface of the connecting plate. The width of the strip-shaped holes is adapted to the diameter of the embedded precision rolled threaded steel. The connecting part of the embedded precision rolled threaded steel passes outward through the strip-shaped holes, and the nut is threadedly connected to the connecting part of the embedded precision rolled threaded steel. The nut is located outside the connecting plate.

[0009] If the original steel bar embedded parts are used for the setting of this structure, the following problems still exist: Since the length of the attached horizontal bar is low and its vertical bending stiffness is large, when the steel pipe column bears a large load and undergoes vertical deformation, due to the inability of the embedded parts to release the vertical constraint, the shear force borne by the attached bar is very large and it is easy to cause damage, and there is a certain safety risk during use. However, after adopting the structure in this solution, the above problems can be well solved. Specifically, when the steel pipe column undergoes vertical compression deformation due to loading, it will drive the attached bar to displace downward. Due to the existence of the strip-shaped holes on the connecting plate, the vertical constraint of the connecting plate will be released, thus avoiding the attached bar from being damaged due to the secondary internal force generated by vertical deformation. Also, since the anchor bar uses embedded precision rolled threaded steel, its tensile strength is high, which can ensure that the tensile force transmitted from the steel pipe column is effectively transmitted to the pier column. If the column transmits horizontal pressure, it will cause the connecting plate to be in close contact with the pier column, which can ensure that the horizontal pressure is transmitted to the pier column. Therefore, the stability of the entire support structure can be greatly improved.

[0010] As a further preference of the present utility model, an installation anchor backing plate is further provided between the connecting plate and the nut.

[0011] In the above system, the strip-shaped holes are the key to ensuring that the embedded plate can release the vertical constraint. When installing the nut, no pre-tightening force needs to be applied. Just twist until the anchor backing plate slightly touches the connecting plate to avoid excessive pre-tightening force generating friction and causing the attached bar to bear vertical force.

[0012] Compared with the prior art, the present utility model can achieve at least one of the following beneficial effects:

[0013] 1. In this solution, the original ordinary steel bar embedded parts are changed to the structure of embedded precision rolled threaded steel and connecting plate, and the two structures are detachably connected through a threaded connection structure. In this way, only the embedded precision rolled threaded steel buried is finally consumed, greatly saving the construction cost, having high economic benefits, and not overly affecting the appearance of the concrete pier column.

[0014] 2. Strip-shaped holes are opened on the connecting plate to release the vertical constraint on the connecting plate, so that the connecting plate does not bear internal force due to the vertical deformation of the column and only bears horizontal force.

[0015] 3. The anchoring system uses precision rolled threaded steel, anchor backing plate and nut. This system has high tensile strength, a wide range of applicable supports, clear force transmission of the anchoring system, and easy inspection and control of quality.

[0016] 4. It solves the problem that the processing quality of ordinary steel bar embedded parts is not easy to control. The main stress point is the weld between the anchor bars and the anchor plate, and the quality of the weld directly affects the stress performance of the attachment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the present invention.

[0018] Figure 2 It is a schematic structural diagram when the present invention is applied. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the present invention to be protected, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0021] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0022] It should be noted that: similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0023] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present invention is normally placed, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Specific Embodiment 1:

[0026] Figure 1 、 Figure 2 There is shown a bracket attachment structure capable of releasing vertical constraints, including a pre-embedded high-strength steel bar 1, a connecting plate 2, and an attached horizontal bar 3. The pre-embedded high-strength steel bar 1 includes a pre-embedded part embedded in the pier and a connecting part protruding outside the pier. The connecting part of the pre-embedded high-strength steel bar 1 is detachably connected to the connecting plate 2 through a threaded connection structure. One end of the attached horizontal bar 3 is fixedly connected to the middle of the connecting plate 2, and the other end of the attached horizontal bar 3 is fixedly connected to the steel pipe column 4.

[0027] In this solution, the original ordinary steel bar embedded part is changed to a structure of a pre-embedded high-strength steel bar and a connecting plate, and the two structures are detachably connected through a threaded connection structure. In this way, only the pre-embedded high-strength steel bar buried is finally consumed, greatly saving the construction cost, having high economic benefits, and not overly affecting the appearance of the concrete pier. Specific Embodiment 2:

[0029] This embodiment further describes the pre-embedded high-strength steel bar 1 on the basis of Specific Embodiment 1. The length of the connecting part of the pre-embedded high-strength steel bar 1 is 10 cm. Specific Embodiment 3:

[0031] This embodiment further describes the threaded connection structure on the basis of Specific Embodiment 1. The threaded connection structure includes a strip hole 5 and a nut 6. The strip holes 5 are opened at the four corners of the connecting plate 2, and the opening direction of the strip holes 5 is perpendicular to the bottom surface of the connecting plate 2. The width of the strip holes 5 is adapted to the diameter of the pre-embedded high-strength steel bar 1. The connecting part of the pre-embedded high-strength steel bar 1 passes through the strip hole 5 outward, and the nut 6 is threadedly connected to the connecting part of the pre-embedded high-strength steel bar 1, and the nut 6 is located outside the connecting plate 2.

[0032] If the original steel bar embedded parts are used for the setting of this kind of structure, the following problems still exist: Since the length of the attached horizontal bar is relatively low and its vertical flexural stiffness is large, when the steel pipe column bears a large load and undergoes vertical deformation, because the embedded parts cannot release the vertical constraint, the shear force borne by the attached bar is very large and it is easy to cause damage, and there is a certain safety risk during use. However, when the structure in this scheme is adopted, the above problems can be well solved. Specifically, when the steel pipe column undergoes vertical compression deformation due to loading, it will drive the attached bar to displace downward. Due to the existence of the strip holes on the connecting plate, the vertical constraint of the connecting plate will be released, thus avoiding the damage caused by the secondary internal force generated by the vertical deformation of the attached bar. Also, because the anchor rod uses pre-embedded precision rolled thread steel, its tensile strength is high, which can ensure that the tensile force transmitted from the steel pipe column is effectively transmitted to the pier column. If the column transmits horizontal pressure, it will cause the connecting plate to be in close contact with the pier column, which can ensure that the horizontal pressure is transmitted to the pier column. Therefore, the stability of the entire support structure can be greatly improved. Specific Embodiment 4:

[0034] This embodiment further describes the connecting plate 2 on the basis of Specific Embodiment 3. An installation anchor backing plate 7 is also provided between the connecting plate 2 and the nut 6.

[0035] In the above system, the strip holes are the key to ensuring that the embedded plate can release the vertical constraint. When installing the nut, no pre-tightening force needs to be applied. Just twist it until the anchor backing plate slightly contacts the connecting plate to avoid excessive pre-tightening force generating friction and causing the attached bar to bear vertical force.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A bracket attachment structure capable of releasing vertical constraints, characterized in that: The invention comprises a pre-embedded fine-rolled threaded steel bar (1), a connecting plate (2) and an attached horizontal rod (3); the pre-embedded fine-rolled threaded steel bar (1) comprises an embedded portion embedded in a pier column and a connecting portion protruding from the pier column; the connecting portion of the pre-embedded fine-rolled threaded steel bar (1) is detachably connected to the connecting plate (2) via a threaded connection structure; one end of the attached horizontal rod (3) is fixedly connected to the middle portion of the connecting plate (2), and the other end of the attached horizontal rod (3) is fixedly connected to a steel pipe column (4).

2. The bracket attachment structure capable of releasing vertical restraint according to claim 1, characterized in that: The length of the connection portion of the embedded fine-rolled threaded steel bar (1) is 10 cm.

3. The bracket attachment structure with releasable vertical restraint according to claim 1, characterized in that: The threaded connection structure comprises a strip hole (5) and a nut (6); the strip hole (5) is opened at four corners of the connection plate (2); the direction in which the strip hole (5) is opened is perpendicular to the bottom surface of the connection plate (2); the width of the strip hole (5) is adapted to the diameter of the embedded fine-rolled threaded steel (1); the connection portion of the embedded fine-rolled threaded steel (1) passes outward through the strip hole (5); the nut (6) is threadedly connected to the connection portion of the embedded fine-rolled threaded steel (1); and the nut (6) is located on the outside of the connection plate (2).

4. The bracket attachment structure capable of releasing vertical restraint according to claim 3, characterized in that: An installation anchor plate (7) is also provided between the connecting plate (2) and the nut (6).

Images