Rigidity-adjustable self-positioning channel steel connecting piece

Abstract

The utility model discloses a rigidity-adjustable self-positioning channel steel connecting piece, which belongs to the technical field of bridge engineering and comprises a steel structure flange plate. Web plates of the channel steel are fixedly arranged on the steel flange plates in parallel; and the anti-shearing rod is connected to the steel flange plate on the outer side of at least one side flange plate of the channel steel in a screwed mode, and the top of the anti-shearing rod is provided with an oval nut which abuts against and acts on the outer side face of the side flange plate during screwing. The rigidity-adjustable self-positioning channel steel connecting piece is simple in connecting structure, convenient to operate, adjustable in connection and good in stability.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge engineering, and particularly relates to an adjustable-rigidity self-positioning channel steel connector. Background Technique

[0002] The steel-concrete composite beam is a new structure that connects steel and concrete materials through shear connectors, enabling steel and concrete to each exert their mechanical properties. The shear connector is an important part of the steel-concrete composite structure, and a reasonable design of the shear connector is the key to ensuring the combined stress of the steel-concrete composite structure. Compared with stud connectors, the channel steel connector has a high single bearing capacity and large stiffness, so it does not need to be arranged in a large area. At the same time, due to the easy availability of channel steel and the absence of special welding equipment, it has been widely used in engineering practice. However, with the development of composite structures, as an important part of composite structures, higher requirements are put forward for the shear capacity of connectors. In the composite structure, the channel steel and the steel flange plate are usually connected by welding, and the welding length and height directly affect the shear bearing capacity of the channel steel connector. On the other hand, during the application of composite structures in bridge engineering, it is inevitable to be affected by dynamic loads such as vehicles, and problems such as welding fatigue are prominent. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide an adjustable-rigidity self-positioning channel steel connector with a simple connection structure, convenient operation, adjustable connection and good stability.

[0004] To achieve the above purpose, the utility model is implemented by the following technical solutions.

[0005] The utility model provides an adjustable-rigidity self-positioning channel steel connector, including:

[0006] Steel flange plate;

[0007] Channel steel, the web of which is fixedly arranged parallel to the steel flange plate;

[0008] Shear rod, screwed and connected to the steel flange plate on the outside of at least one side flange of the channel steel, and an elliptical nut is arranged at the top of the shear rod, which abuts against the outer side of the side flange during screwing.

[0009] Further, the steel flange plate is provided with a long strip-shaped special-shaped hole matching the shear rod, and the special-shaped hole includes a first positioning hole and a second positioning hole that communicate with each other. The first positioning hole is located at one end close to the channel steel, and the second positioning hole is located at one end far from the channel steel.

[0010] Further, four of the special-shaped holes are formed in the steel flange plate, and two of the special-shaped holes are respectively arranged on the outer sides of the two side flange plates of the channel steel in parallel with each other.

[0011] Further, at least one matching pin hole is formed in each of the channel steel and the steel flange plate, and a steel pin is inserted into the pin hole.

[0012] Further, the pin hole is formed at the centroid of the web of the channel steel.

[0013] Further, the steel pin is a self-locking bolt.

[0014] Further, the shear rod further includes an external thread screw rod connected to the elliptical nut, and the screw rod is screwed and connected to the internal thread screw hole of the steel flange plate.

[0015] Further, the two ends of the web of the channel steel are welded to the steel flange plate.

[0016] Further, two of the shear rods are arranged on the outer side of the upper side flange plate of the channel steel.

[0017] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows: for the self-positioning channel steel connector with adjustable stiffness of the present utility model, the web of the channel steel is placed parallel to the steel flange plate, which increases the contact surface between the channel steel and the steel flange plate, thereby increasing the stiffness of the steel flange plate and reducing the deformation of the steel flange plate during concrete pouring; cylindrical pin holes are provided on the web of the channel steel and the steel flange plate. After the pin holes of the channel steel and the steel flange plate are aligned, steel pins are inserted to resist horizontal shear force; at the same time, screw holes are provided on one side of the steel flange plate close to the side flange plate of the channel steel for fixing the screw rod, and the abutting and spacing between the elliptical nut and the side flange plate of the channel steel are adjusted by screwing the screw rod to control the shear force transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic three-dimensional structure diagram of a self-positioning channel steel connector with adjustable stiffness according to an embodiment of the present utility model.

[0019] Figure 2 Schematic diagram of an elliptical nut and a screw rod according to an embodiment of the present utility model.

[0020] Figure 3 Schematic diagram of a steel flange plate according to an embodiment of the present utility model.

[0021] Figure 4 Schematic diagram of a channel steel according to an embodiment of the present utility model.

[0022] Figure 5 Top view of a self-positioning channel steel connector with adjustable stiffness according to an embodiment of the present utility model.

[0023] Figure 6 Side view of an adjustable stiffness self - positioning channel steel connector according to an embodiment of the present utility model.

[0024] Figure 7 Front view of an adjustable stiffness self - positioning channel steel connector according to an embodiment of the present utility model.

[0025] Figure 8 Schematic diagram of a channel steel and a special - shaped hole according to an embodiment of the present utility model.

[0026] In the figure: 1, steel flange plate; 2, channel steel; 3, shear - resistant rod; 4, steel pin; 5, pin hole; 6, special - shaped hole; 7, nut; 8, weld seam; 9, external thread; 10, first positioning hole; 11, second positioning hole. Detailed implementation manners

[0027] The present utility model will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model and cannot be used to limit the protection scope of the present utility model.

[0028] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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, so it cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "connected" 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 elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0030] Such as Figure 1As shown in the figure, in the embodiment of the present utility model, an adjustable stiffness self-aligning channel steel 2 connecting piece is provided, including:

[0031] Steel flange plate 1;

[0032] Channel steel 2, the web of the channel steel 2 is fixedly arranged in parallel on the steel flange plate 1;

[0033] Shear-resistant rod 3, screwed and connected to the steel flange plate 1 on the outside of at least one side flange of the channel steel 2, and an elliptical nut 7 that abuts against the outer side surface of the side flange when screwed is arranged at the top of the shear-resistant rod 3, so as to realize the adjustment of the stiffness between each other and form.

[0034] In this embodiment, at least one matching pin hole 5 is respectively opened on the channel steel 2 and the steel flange plate 1, and a steel pin 4 is inserted into the pin hole 5. A pin hole 5 penetrating the web is opened at the centroid of the web of the channel steel 2. A non-penetrating pin hole 5 matching the pin hole 5 on the web is opened on the steel flange plate 1, and a steel pin 4 is inserted into the two pin holes 5, as Figure 4 and Figure 6 shown.

[0035] It should be noted that two or three pin holes can also be set, located at the centroid or non-centroid, for example, evenly spaced along the length direction of the web of the channel steel at the trisecting line, etc., and no examples are given one by one here.

[0036] In this embodiment, the steel pin 4 can be a self-locking bolt.

[0037] As Figure 2 , Figure 3 , Figure 7 and Figure 8 shown, a long strip-shaped special-shaped hole 6 matching the shear-resistant rod 3 is opened on the steel flange plate 1, and the special-shaped hole 6 includes a first positioning hole 10 and a second positioning hole 11 that communicate with each other. The first positioning hole 10 is located at one end close to the channel steel 2, and the second positioning hole 11 is located at one end far from the channel steel.

[0038] Four special-shaped holes 6 are opened on the steel flange plate 1, and two special-shaped holes 6 are respectively arranged in parallel on the outside of the two side flanges of the channel steel 2.

[0039] In this embodiment, as Figure 5 and Figure 6 shown, two shear-resistant rods 3 are arranged on the outside of one side flange of the channel steel 2; the two shear-resistant rods 3 are respectively located in the first positioning holes 10 of a special-shaped hole 6.

[0040] In this embodiment, the shear rod 3 further includes an external thread screw rod connected to the elliptical nut 7, and the screw rod is screwed into the internal thread screw hole of the steel flange plate 1.

[0041] As Figure 1 shown, the two ends of the web of the channel steel 2 are welded to the steel flange plate 1, thereby enhancing the fixed connection between the channel steel 2 and the steel flange plate 1.

[0042] The construction operation of the adjustable stiffness positioning channel steel 2 connecting piece of the present utility model is described in the following steps:

[0043] Prepare a number of channel steels 2, steel flange plates 1, steel pins 4, and shear rods 3 with elliptical nuts 7. Taking the installation of the shear key of a certain section of channel steel 2 as an example:

[0044] Place the web of the channel steel 2 parallel to the steel flange plate 1, and align the pin holes 5 at the centroid of the web of the channel steel 2 with the pin holes 5 of the steel flange plate 1;

[0045] Insert the steel pin 4 (such as a self-locking bolt) into the pin holes 5 of the channel steel 2 and the steel flange plate 1; at the same time, weld and connect the joint of one side flange of the channel steel 2 and the steel flange plate 1 with an end weld;

[0046] Screw the external thread screw rod with the shear rod 3 into the internal thread screw hole of the first positioning hole 10 of the special-shaped hole 6 on one side of the side flange of the channel steel 2;

[0047] Adjust the gap and abutting relationship between the elliptical nut 7 and the side flange of the channel steel 2 by screwing the screw rod to achieve the further shear resistance effect; at the same time, for channel steels 2 of different lengths, the position of the shear rod 3 in the special-shaped hole 6 can also be adjusted, for example, adjusted and moved into the second positioning hole 11.

[0048] The above is only the preferred embodiment of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and deformations can be made, and these improvements and deformations should also be regarded as the protection scope of the present utility model.

Claims

1. An adjustable stiffness self-aligning channel steel connector, characterized in that Comprising: Steel flange plate; Channel steel, the web of which is fixedly arranged parallel to the steel flange plate; Shear resistance rod, screwed and connected to the steel flange plate outside at least one side flange plate of the channel steel, and an oval nut configured to abut against the outer side surface of the side flange plate during screwing is arranged at the top of the shear resistance rod.

2. The self-aligning channel steel connector with adjustable stiffness according to claim 1, characterized in that A long strip-shaped special-shaped hole matching the shear resistance rod is formed in the steel flange plate, the special-shaped hole comprises a first positioning hole and a second positioning hole which are communicated with each other, the first positioning hole is located at one end close to the channel steel, and the second positioning hole is located at one end far from the channel steel.

3. The self-aligning channel steel connector with adjustable stiffness according to claim 2, characterized in that, Four such special-shaped holes are formed in the steel flange plate, and two such special-shaped holes are respectively arranged parallel to each other outside the two side flange plates of the channel steel.

4. The self-aligning channel steel connector with adjustable stiffness according to claim 1, characterized in that, At least one matching pin hole is formed in the channel steel and the steel flange plate respectively, and a steel pin is inserted into the pin hole.

5. The self-aligning channel steel connector with adjustable stiffness according to claim 4, characterized in that The pin hole is formed at the centroid of the web of the channel steel.

6. The self-aligning channel steel connector with adjustable stiffness according to claim 5, wherein, The steel pin adopts a self-locking bolt.

7. The self-aligning channel steel connector with adjustable stiffness according to claim 1, characterized in that, The shear resistance rod further comprises an external thread screw rod connected to the oval nut, and the screw rod is screwed and connected to the internal thread screw hole of the steel flange plate.

8. The self-aligning channel steel connector with adjustable stiffness according to claim 1, characterized in that, The two ends of the web of the channel steel are welded to the steel flange plate.

9. The self-aligning channel steel connector with adjustable stiffness according to claim 1, characterized in that, Two such shear resistance rods are arranged outside the upper side flange plate of the channel steel.

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