An installation structure suitable for transverse stopper of steel anchor beam of cable-stayed bridge

Abstract

The present application relates to an installation structure suitable for a transverse stopper of a steel anchor beam of a cable-stayed bridge, comprising a steel anchor beam; a concrete transverse stopper, comprising a pre-cast section and a post-cast section, wherein the post-cast section is located between the pre-cast section and the steel anchor beam; an embedded steel plate, which is arranged between the concrete transverse stopper and the steel anchor beam and fits with the steel anchor beam, wherein the embedded steel plate is fixedly connected with the post-cast section; and a temporary connector, which is used to temporarily connect the steel anchor beam and the embedded steel plate. The present application can improve the installation efficiency of the steel anchor beam and reduce the difficulty of hoisting by dividing the concrete transverse stopper into a pre-cast section and a post-cast section, and arranging the embedded steel plate and the temporary connector to be temporarily connected with the steel anchor beam, thereby improving the installation efficiency of the steel anchor beam and reducing the difficulty of hoisting, and at the same time making the concrete transverse stopper fit completely and tightly with the steel anchor beam, making the concrete transverse stopper evenly stressed, and making the force transmission of each part of the steel anchor beam reasonable and clear, thereby improving the safety of the steel anchor beam.

Description

Technical Field

[0001] The present application relates to the technical field of bridge engineering, and in particular to an installation structure suitable for a transverse stopper of a steel anchor beam of a cable-stayed bridge. Background Art

[0002] At present, with the development of economy and society, a large number of cable-stayed bridges have been built in my country in recent years. In cable-stayed bridges, the cable force is getting bigger and bigger, and the anchorage structure of the cable in the bridge tower is also getting bigger and bigger. Therefore, the anchorage structure of the cable is a key part of the bridge design.

[0003] The most commonly used anchoring structure for the cable in the bridge tower is the steel anchor beam anchoring. Its force-bearing principle is that the vertical force of the cable is transmitted to the bridge tower by the bracket at the lower end of the steel anchor beam, and the in-plane horizontal force of the cable is balanced by the axial tension of the steel anchor beam. When the in-plane horizontal force of the cable on both sides of the tower column is unequal, the unbalanced force is transmitted to the bridge tower through the bracket.

[0004] For bridges where the central axis of the cable-stayed cables and the bridge towers are not in the same plane, that is, spatial cable-plane bridges, the magnitude of the out-of-plane horizontal component of the cable force can be as low as a dozen tons and as high as nearly a hundred tons. It is necessary to design corresponding transverse blocks to evenly transmit the out-of-plane horizontal component of the force to the bridge tower cross-section.

[0005] In the related technology, the common practice is to construct the concrete transverse block first, and then hoist the steel anchor beam. After the steel anchor beam is installed in place, the gap between the steel anchor beam and the transverse block is "filled" with a thin steel plate.

[0006] However, in the above construction method, the construction process of the padding is complicated, time-consuming and labor-intensive, and the padding may cause uneven force on the transverse block, and the padding effect cannot be tested. Therefore, it is necessary to design an installation structure suitable for the transverse block of the steel anchor beam of the cable-stayed bridge to overcome the above problems. Summary of the invention

[0007] The embodiment of the present application provides an installation structure for a transverse block of a steel anchor beam of a cable-stayed bridge, so as to solve the problem in the related art that the construction process of the transverse block structure is complicated and uneven force may be applied to the transverse block.

[0008] The technical solution adopted in this application is:

[0009] An installation structure for a transverse stopper of a steel anchor beam of a cable-stayed bridge, comprising:

[0010] Steel anchor beam;

[0011] A concrete transverse stopper, comprising a pre-cast section and a post-cast section, wherein the post-cast section is located between the pre-cast section and the steel anchor beam;

[0012] A pre-buried steel plate, which is arranged between the concrete transverse stopper and the steel anchor beam and is in contact with the steel anchor beam, and the pre-buried steel plate is fixedly connected to the post-casting section;

[0013] A temporary connecting piece is used to temporarily connect the steel anchor beam and the embedded steel plate.

[0014] In some embodiments, the temporary connecting part includes at least two connecting steel plates, one of which is parallel to and attached to the embedded steel plate, the embedded steel plate and the connecting steel plate parallel thereto are temporarily connected, and the other connecting steel plate is fixedly connected to the steel anchor beam, and the two connecting steel plates are fixedly connected.

[0015] In some embodiments, the two connecting steel plates are perpendicular to each other.

[0016] In some embodiments, the embedded steel plate is fixed to the connecting steel plate by bolts.

[0017] In some embodiments, a plurality of pre-opened holes are formed on the connecting steel plate temporarily connected to the embedded steel plate.

[0018] In some embodiments, the two connecting steel plates are connected by a chamfered steel plate.

[0019] In some embodiments, a side of the embedded steel plate away from the steel anchor beam is connected to a plurality of shear nails, and the plurality of shear nails are embedded in the post-casting section.

[0020] In some embodiments, a plurality of horizontal stiffening ribs are provided on the web of the steel anchor beam, and the connecting steel plate connected to the steel anchor beam is attached to and fixed to one of the horizontal stiffening ribs.

[0021] In some embodiments, a plurality of vertical stiffening ribs are provided on the web of the steel anchor beam, and the connecting steel plate connected to the steel anchor beam is attached to and fixed to one of the vertical stiffening ribs.

[0022] In some embodiments, the post-casting section has a length of 3-5 cm.

[0023] The beneficial effects of the technical solution provided by this application include:

[0024] The embodiment of the present application provides an installation structure for a transverse stopper of a steel anchor beam of a cable-stayed bridge, wherein a transverse space is reserved for the hoisting of the steel anchor beam through the setting of a post-cast section, the steel anchor beam is temporarily connected to the embedded steel plate through a temporary connecting piece, and after the hoisting of the steel anchor beam is completed, the post-cast section is cast and connected to the embedded steel plate, and after the strength of the post-cast section reaches the requirement, the embedded steel plate is disconnected from the steel anchor beam, thereby completing the construction of the transverse stopper, and the steel anchor beam is kept in close fit with the transverse stopper, the construction plan is simple, the concrete transverse stopper is evenly stressed, the force transmission of each part of the steel anchor beam is reasonable and clear, thereby improving the safety of the steel anchor beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 A schematic diagram of the structure of the installation structure of the transverse stopper of the steel anchor beam of the cable-stayed bridge provided in the embodiment of the present application;

[0027] Figure 2 A schematic diagram of the structure of a temporary connecting piece in the installation structure of a transverse stopper of a steel anchor beam of a cable-stayed bridge provided in an embodiment of the present application;

[0028] Figure 3 A side view schematic diagram of an installation structure for a transverse stopper of a steel anchor beam of a cable-stayed bridge provided in an embodiment of the present application;

[0029] Figure 4 A schematic top view of an installation structure for a transverse stopper of a steel anchor beam of a cable-stayed bridge provided in an embodiment of the present application.

[0030] In the figure: 1. Steel anchor beam; 101. Horizontal stiffening rib; 102. Vertical stiffening rib; 2. Concrete transverse block; 201. Post-cast section; 202. Pre-cast section; 3. Embedded steel plate; 4. Temporary connecting piece; 401. Connecting steel plate; 402. Chamfered steel plate; 403. Pre-opening hole; 5. Shear nail. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0032] The embodiment of the present application provides an installation structure suitable for a transverse block of a steel anchor beam of a cable-stayed bridge, which can solve the problem that the current transverse block structure has a complicated construction process and may cause uneven force on the transverse block.

[0033] Reference Figure 1-4 As shown, the installation structure suitable for the transverse block of the steel anchor beam of the cable-stayed bridge includes: a steel anchor beam 1, a concrete transverse block 2, an embedded steel plate 3 and a temporary connecting piece 4, wherein the concrete transverse block 2 includes a pre-cast section 202 and a post-cast section 201, the post-cast section 201 is located between the steel anchor beam 1 and the pre-cast section 202, the embedded steel plate 3 is arranged between the steel anchor beam 1 and the concrete transverse block 2 and fits with the steel anchor beam 1, and the embedded steel plate 3 is fixedly connected to the post-cast section 201, and the embedded steel plate 3 and the steel anchor beam 1 are temporarily connected by the temporary connecting piece 4.

[0034] The setting of the post-casting section 201 reserves space for the hoisting of the steel anchor beam 1, thereby improving the hoisting construction efficiency of the steel anchor beam 1. The temporary connector 4 is set to keep the steel anchor beam 1 and the embedded steel plate 3 in a close fit state. After the construction of the post-casting section 201 is completed, the steel anchor beam 1 and the embedded steel plate 3 are separated. Since the embedded steel plate 3 is fixed to the post-casting section 201, the steel anchor beam 1 and the concrete transverse block 2 are kept in close fit, and the relative sliding of the steel anchor beam 1 and the concrete transverse block 2 is not affected.

[0035] Specifically, a plurality of shear nails 5 are fixedly connected to the side of the embedded steel plate 3 away from the steel anchor beam 1, and the plurality of shear nails 5 are embedded in the post-casting section 201; the length of the post-casting section 201 is set to 3-5 cm, which can be set according to actual construction, and is set to 5 cm in this embodiment. The setting of the shear nails 5 can improve the connection strength between the embedded steel plate 3 and the post-casting section 201, so that the support of the concrete transverse block 2 to the steel anchor beam 1 is more stable.

[0036] The temporary connecting part 4 includes at least two connecting steel plates 401, and one of the connecting steel plates 401 is parallel to and fixed to the embedded steel plate 3. This connecting steel plate 401 is temporarily connected to the embedded steel plate 3, and the other connecting steel plate 401 is fixed to the steel anchor beam 1. The two connecting steel plates 401 are fixedly connected, thereby realizing the temporary connection between the steel anchor beam 1 and the embedded steel plate 3.

[0037] In this embodiment, two connecting steel plates 401 are provided, and the two connecting steel plates 401 are perpendicular to each other. In order to improve the structural strength of the temporary connecting piece 4, the two connecting steel plates 401 are fixedly connected by a chamfered steel plate 402, and the chamfered steel plate 402 serves as the chamfered edges of the two connecting steel plates 401; this makes the processing and manufacturing of the temporary connecting piece 4 simple, the cost is low, and the structural strength is high.

[0038] The temporary connection piece 4 is welded and fixed to the steel anchor beam 1, and the temporary connection piece 4 is bolted and fixed to the embedded steel plate 3, that is, the embedded steel plate 3 and the connecting steel plate 401 connected thereto are bolted and fixed. Specifically, a plurality of pre-opened holes 403 are provided on the connecting steel plate 401, and screw holes for bolting are provided on the embedded steel plate 3. The bolts pass through the pre-opened holes 403 and are bolted and fixed to the embedded steel plate 3, thus realizing the temporary connection between the steel anchor beam 1 and the embedded steel plate 3. In this embodiment, two pre-opened holes 403 are provided on the connecting steel plate 401, and ordinary tapping bolts can be used as bolts. The connecting steel plate 401 is connected to the embedded steel plate 3 by bolts, so that the connection and disconnection of the temporary connection piece 4 and the embedded steel plate 3 are relatively convenient, which can improve the construction efficiency.

[0039] A plurality of horizontal stiffening ribs 101 and a plurality of vertical stiffening ribs 102 are arranged on the web of the steel anchor beam 1. The temporary connector 4 can be fixedly connected to the horizontal stiffening ribs 101 or to the vertical stiffening ribs 102, which can be selected according to actual needs. When the temporary connector 4 is connected to the horizontal stiffening rib 101, the connecting steel plate 401 connected to the steel anchor beam 1 is horizontally arranged, and the connecting steel plate 401 is attached to the horizontal stiffening rib 101 and is welded and fixed thereto; when the temporary connector 4 is connected to the vertical stiffening rib 102, the connecting steel plate 401 connected to the steel anchor beam 1 is vertically arranged, and the connecting steel plate 401 is attached to the vertical stiffening rib 102 and is welded and fixed thereto; in this embodiment, the temporary connector 4 is connected to the horizontal stiffening rib 101 for illustration.

[0040] The connection position between the temporary connector 4 and the steel anchor beam 1 is designed in combination with the actual position of the concrete transverse stopper 2, preferably near the actual anchoring point of the inclined cable.

[0041] In order to improve the connection strength between the embedded steel plate 3 and the steel anchor beam 1, a plurality of temporary connecting parts 4 are arranged between the embedded steel plate 3 corresponding to each concrete transverse block 2 and the steel anchor beam 1, and the temporary connecting parts 4 are selected according to actual construction needs; in this embodiment, two temporary connecting parts 4 are arranged between each embedded steel plate 3 and the steel anchor beam 1.

[0042] The implementation principle of this embodiment is as follows: when constructing the transverse block, first cast the pre-cast section 202 and reserve the post-cast section 201; after the temporary connection piece 4 is connected and fixed to the steel anchor beam 1 and the embedded steel plate 3, the steel anchor beam 1 is hoisted, and the steel anchor beam 1 is accurately installed at the designed position by measuring and positioning; the post-cast section 201 is cast between the embedded steel plate 3 and the pre-cast section 202, and the shear nails 5 on the embedded steel plate 3 are buried in the post-cast section 201; after the post-cast section 201 reaches a certain strength, the bolts are loosened to disengage the embedded steel plate 3 from the temporary connection piece 4, and at this time, the temporary connection piece 4 is tightly fitted with the concrete transverse block 2, that is, the concrete transverse block 2 is tightly fitted with the steel anchor beam 1, and can slide relative to each other along the direction of the cable force.

[0043] In the description of the present application, it should be noted that the terms "upper", "lower", etc. 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 application 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 on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0044] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0045] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. An installation structure for a transverse stopper of a steel anchor beam of a cable-stayed bridge, characterized in that: include: Steel anchor beam (1); A concrete transverse stopper (2), comprising a pre-cast section (202) and a post-cast section (201), wherein the post-cast section (201) is located between the pre-cast section (202) and the steel anchor beam (1); A pre-buried steel plate (3), which is arranged between the concrete transverse stopper (2) and the steel anchor beam (1) and is in contact with the steel anchor beam (1), and the pre-buried steel plate (3) is fixedly connected to the post-casting section (201); A temporary connecting piece (4) is used to temporarily connect the steel anchor beam (1) and the embedded steel plate (3).

2. The installation structure of the transverse stopper for the steel anchor beam of a cable-stayed bridge according to claim 1 is characterized in that: The temporary connecting member (4) comprises at least two connecting steel plates (401), one of which is parallel to the embedded steel plate (3) and is attached to the embedded steel plate (3), the embedded steel plate (3) and the connecting steel plate (401) parallel thereto are temporarily connected, the other connecting steel plate (401) is fixedly connected to the steel anchor beam (1), and the two connecting steel plates (401) are fixedly connected.

3. The installation structure of the transverse stopper for the steel anchor beam of a cable-stayed bridge according to claim 2 is characterized in that: The two connecting steel plates (401) are perpendicular to each other.

4. The installation structure of the transverse stopper for the steel anchor beam of a cable-stayed bridge according to claim 2 is characterized in that: The embedded steel plate (3) is bolted and fixed to the connecting steel plate (401).

5. The installation structure of the transverse stopper for the steel anchor beam of a cable-stayed bridge according to claim 2 is characterized in that: The connecting steel plate (401) temporarily connected to the embedded steel plate (3) is provided with a plurality of pre-opened holes (403).

6. The installation structure of the transverse stopper for the steel anchor beam of a cable-stayed bridge according to claim 3 is characterized in that: The two connecting steel plates (401) are connected via a chamfered steel plate (402).

7. The installation structure of the transverse stopper for the steel anchor beam of a cable-stayed bridge according to claim 1 is characterized in that: A plurality of shear nails (5) are connected to a side of the embedded steel plate (3) away from the steel anchor beam (1), and the plurality of shear nails (5) are embedded in the post-casting section (201).

8. The installation structure of the transverse stopper for the steel anchor beam of a cable-stayed bridge according to claim 2 is characterized in that: A plurality of horizontal stiffening ribs (101) are arranged on the web of the steel anchor beam (1), and the connecting steel plate (401) connected to the steel anchor beam (1) is attached to and fixed to one of the horizontal stiffening ribs (101).

9. The installation structure of the transverse stopper for the steel anchor beam of a cable-stayed bridge according to claim 2 is characterized in that: A plurality of vertical stiffening ribs (102) are arranged on the web of the steel anchor beam (1), and the connecting steel plate (401) connected to the steel anchor beam (1) is attached to and fixed to one of the vertical stiffening ribs (102).

10. The installation structure of the transverse stopper for the steel anchor beam of a cable-stayed bridge according to claim 1 is characterized in that: The post-casting section (201) has a length of 3-5 cm.

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