Bridge mounting and positioning steel box girder

Abstract

The utility model relates to the technical field of bridge installation, in particular to a bridge installation positioning steel box girder which comprises a plurality of box girder sections, and pre-positioning structures are arranged on the left side and the right side of each box girder section. The pre-positioning structure comprises a pre-positioning rod and a pre-positioning groove, the pre-positioning rod and the pre-positioning groove are arranged at the front end and the rear end of the box girder section respectively, the pre-positioning rod is fixed to the front end face of the box girder section and located on the inner side of the side face, the pre-positioning rod is parallel to the length direction of the box girder section, and the outer side face of the pre-positioning rod is flush with the side face of the box girder section. The pre-positioning groove is formed in the side face of the box girder section and matched with the pre-positioning rod, and the rear end of the pre-positioning groove penetrates through the rear end face of the box girder section. When a box girder section is installed and a non-installed box girder section is close to an installed box girder section, pre-positioning is conducted according to the positions of the pre-positioning rod and the pre-positioning groove, so that the pre-positioning rod is inserted into the pre-positioning groove from the end of the pre-positioning groove, and after the box girder section is installed in place, the pre-positioning rod is embedded into the pre-positioning groove, and the outer surface of the pre-positioning rod is flush with the side face of the box girder to form an integral structure.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge installation, and more specifically, particularly relates to a bridge installation positioning steel box girder. Background Art

[0002] The methods to improve the installation accuracy of bridge steel box girders mainly include accurate measurement and positioning device assistance. During installation, accurate measurement methods are first used, including level positioning, laser positioning and other measurements. However, when the steel box girder is hoisted, due to the influence of factors such as cranes and wind, the positioning accuracy cannot be guaranteed by the measurement method alone, and the positioning device assistance is required.

[0003] The existing positioning device assists a bridge installation positioning steel box girder disclosed in the utility model patent with announcement number CN220166642U, which includes multiple bridge sections, and each bridge section body is provided with a No. 1 connecting piece on the left and right sides respectively, and the bridge section is provided with a fixedly connected No. 2 connecting piece and a No. 3 connecting piece, and the front side of the No. 2 connecting piece is provided with a fixedly connected positioning rod, and the rear side of the No. 2 connecting piece is provided with a positioning hole corresponding to the positioning rod; the rear side of the No. 3 connecting piece is provided with a mounting hole, and the left and right sides of the mounting hole are symmetrically provided with two card slots, the front side of the No. 3 connecting piece is provided with a fixedly connected connecting protrusion, and the left and right sides of the connecting protrusion are symmetrically provided with card blocks, and the left and right sides of the connecting protrusion are provided with grooves, each groove is provided with a fixedly connected connecting rod, and the outer wall of the connecting rod is provided with a spring, one end of the spring is abutted against the groove, and the other end of the spring is fixedly connected to the card block.

[0004] The above-mentioned prior art has the following shortcomings: first, during installation, two adjacent bridge sections can be preliminarily positioned by using bolts or pins to penetrate No. 1 connectors set on both sides of the bridge section. The No. 1 connector is set on the outside of the bridge section. After installation, it affects the overall structural continuity and aesthetics of the bridge. Secondly, only one side of the bridge section is provided with connecting protrusions, clamping blocks and other structures, so that there is only a single connection node on one side between two adjacent bridge sections, and the stability needs to be improved. Utility Model Content

[0005] The utility model aims to overcome the existing problems of installing and positioning steel box girders on bridges and to provide a technical solution that can solve the above problems.

[0006] A bridge installation and positioning steel box girder comprises a plurality of box girder sections, and a pre-positioning structure is provided on the left and right sides of each box girder section; the pre-positioning structure comprises a pre-positioning rod and a pre-positioning groove, and the pre-positioning rod and the pre-positioning groove are respectively provided at the front and rear ends of the box girder section, the pre-positioning rod is fixed to the front end face of the box girder section and is located on the inner side of the side face, the pre-positioning rod is provided parallel to the length direction of the box girder section, the outer side face of the pre-positioning rod is flush with the side face of the box girder section, the pre-positioning groove is opened on the side face of the box girder section and is matched with the pre-positioning rod, and the rear end of the pre-positioning groove passes through the rear end face of the box girder section.

[0007] Furthermore, a first positioning rod is fixed to one end of the pre-positioning rod away from the box beam section, and a first positioning hole is provided at one end of the pre-positioning groove close to the pre-positioning rod, and the first positioning hole is adapted to the first positioning rod.

[0008] Furthermore, the outer side surface of the pre-positioning rod is coated with a first indicator coating, and the side surface of the box beam section and the surrounding side of the pre-positioning groove are coated with a second indicator coating.

[0009] Furthermore, it also includes a positioning connection structure arranged between the two box beam sections, the positioning connection structure includes a positioning limit piece and a positioning anchor piece, wherein a connecting end of one of the box beam sections is provided with a positioning groove, the positioning limit piece is fixed in the positioning groove, the vertical cross-section of the positioning limit piece is a structure that is thick at the front and rear ends and thin in the middle, and the positioning limit piece is open at one end close to the adjacent box beam section, the positioning anchor piece includes an anchor rod fixed to the connecting end of the other box beam section and a limit head fixed to the other end of the anchor rod, the anchor rod is inserted in the positioning limit piece, and the limit head is located at the end of the positioning limit piece away from the opening.

[0010] Furthermore, at least one positioning limiter and one positioning anchor are provided at the same end of the box beam section.

[0011] Furthermore, the positioning and limiting member is made of an elastic steel plate.

[0012] Furthermore, the positioning limit piece and the positioning anchor piece are fixedly connected to the box beam section via a fixed steel plate.

[0013] Furthermore, the fixing steel plate is integrally formed with the box beam section or connected by welding.

[0014] Furthermore, the vertical cross-section of the positioning and limiting member is in the shape of an hourglass with one end open.

[0015] Furthermore, when the positioning and limiting member is not inserted into the positioning anchor member, the width of the inner middle portion of the positioning and limiting member is equal to or smaller than the diameter of the anchor rod.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The bridge installation and positioning steel box girder in the utility model is provided with a pre-positioning structure on both sides of the left and right sides of the box girder section, the pre-positioning structure includes a pre-positioning rod and a pre-positioning groove, by fixing the pre-positioning rod on the front end face of the box girder section and being located on the inner side of the side face, the pre-positioning rod is arranged parallel to the length direction of the box girder, and the outer side face of the pre-positioning rod is flush with the side face of the box girder, and the rear end of the box girder section is provided with a pre-positioning groove adapted to the pre-positioning rod. When the box girder section is installed, since the pre-positioning rod is at the front end of the box girder section and has a certain length, it can be pre-positioned according to the positions of the pre-positioning rod and the pre-positioning groove when the uninstalled box girder section is close to the installed box girder section, so that the pre-positioning rod is inserted into the pre-positioning groove from the end face of the pre-positioning groove, and after being installed in place, the pre-positioning rod is embedded in the pre-positioning groove, and the outer surface is flush with the side face of the box girder to form an integral structure.

[0018] The bridge installation positioning steel box girder in the utility model is provided with a positioning connection structure between two adjacent box girder sections, and the positioning anchor is inserted into the positioning limiter so that the limiter head is embedded in the positioning limiter and cannot be disengaged, thereby limiting and connecting the two adjacent box girder sections. At least one positioning limiter and one positioning anchor are provided at the same end of the box girder section, so that the connection nodes between the two box girder sections are distributed in the two box girder sections, thereby enhancing the connection stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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:

[0020] Figure 1 It is a schematic diagram of the overall structure of a bridge installation positioning steel box girder in an embodiment of the utility model.

[0021] Figure 2 It is a schematic diagram of the connection state of the bridge installation positioning steel box girder in the embodiment of the utility model.

[0022] Figure 3 It is a schematic diagram of a vertical section of a steel box girder for bridge installation and positioning in an embodiment of the utility model.

[0023] Figure 4 It is a schematic diagram of the cross section of the bridge installation positioning steel box girder in the embodiment of the utility model.

[0024] Figure 5 yes Figure 2 Cross-sectional view of the structure in the middle.

[0025] In the figure: 1. box girder section; 2. pre-positioning rod; 3. pre-positioning groove; 4. first positioning rod; 5. first positioning hole; 6. first indicator coating; 7. second indicator coating; 8. positioning limit member; 9. positioning groove; 10. anchor rod; 11. limit head; 12. fixed steel plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figure 1 , Figure 2 As shown, the bridge installation and positioning steel box girder in this embodiment includes a plurality of box girder sections 1, and a pre-positioning structure is provided on the left and right sides of each box girder section 1, i.e., both sides of the box girder as a whole. The pre-positioning structure includes a pre-positioning rod 2 and a pre-positioning groove 3, and the pre-positioning rod 2 and the pre-positioning groove 3 are respectively arranged at the front and rear ends of the box girder section 1, i.e., the connecting ends with other box girder sections 1. The pre-positioning rod 2 is fixed to the front end face of the box girder section 1 and is located on the inner side of the side face. The pre-positioning rod 2 is arranged parallel to the length direction of the box girder section 1, and the outer side face of the pre-positioning rod 2 is flush with the side face of the box girder section 1. The pre-positioning groove 3 is opened on the side face of the box girder section 1 and is adapted to the pre-positioning rod 2, and the rear end of the pre-positioning groove 3 passes through the rear end face of the box girder section 1.

[0028] The bridge installation and positioning steel box girder in this embodiment has a pre-positioning structure on both sides of the box girder section 1, and the pre-positioning structure includes a pre-positioning rod 2 and a pre-positioning groove 3. The pre-positioning rod 2 is fixed to the front end face of the box girder section 1 and is located on the inner side of the side face. The pre-positioning rod 2 is arranged parallel to the length direction of the box girder, and the outer side face of the pre-positioning rod 2 is flush with the side face of the box girder. The rear end of the box girder section 1 is provided with a pre-positioning groove 3 adapted to the pre-positioning rod 2. When the box girder section 1 is installed, since the pre-positioning rod 2 is at the front end of the box girder section 1 and has a certain length, it can be pre-positioned according to the positions of the pre-positioning rod 2 and the pre-positioning groove 3 when the uninstalled box girder section 1 is close to the installed box girder section 1, so that the pre-positioning rod 2 is inserted into the pre-positioning groove 3 from the end of the pre-positioning groove 3, and after being installed in place, the pre-positioning rod 2 is embedded in the pre-positioning groove 3, and the outer surface is flush with the side face of the box girder to form an integral structure.

[0029] In this embodiment, preferably, Figure 3As shown, a first positioning rod 4 is fixed to one end of the pre-positioning rod 2 away from the box beam section 1, and a first positioning hole 5 is provided at one end of the pre-positioning groove 3 close to the pre-positioning rod 2, and the first positioning hole 5 is adapted to the first positioning rod 4. By providing the first positioning rod 4, the connection strength between the pre-positioning rod 2 and the adjacent box beam section 1 is enhanced.

[0030] In this embodiment, the outer side of the pre-positioning rod 2 is coated with a first indicator coating 6, which refers to the side of the pre-positioning rod 2 that is exposed when the pre-positioning rod 2 is embedded in the pre-positioning groove 3, and the side of the box beam section 1 and the part located around the pre-positioning groove 3 are coated with a second indicator coating 7. The provision of the first indicator coating 6 and the second indicator coating 7 makes the position of the pre-positioning rod 2 and the pre-positioning groove 3 more obvious, which is convenient for the staff to observe whether the box beam section 1 is aligned. In specific operation, the first indicator coating 6 and the second indicator coating 7 are coated with paints with a large color difference from the steel box beam body, and the first indicator coating 6 and the second indicator coating 7 can be selected in the same color or different colors.

[0031] The bridge installation positioning steel box girder in this embodiment also includes a positioning connection structure arranged between the two box girder sections 1, such as Figure 4 , Figure 5 As shown, the positioning connection structure includes a positioning stopper 8 and a positioning anchor, wherein a positioning groove 9 is provided at the connection end of one box beam section 1, and the positioning stopper 8 is fixed in the positioning groove 9. The vertical section of the positioning stopper 8 is thick at the front and rear ends and thin in the middle, and the positioning stopper 8 is open at one end close to the adjacent box beam section 1, and the positioning stopper 8 is made of an elastic steel plate. The positioning anchor includes an anchor rod 10 fixed to the connection end of another box beam section 1 and a stopper head 11 fixed to the other end of the anchor rod 10, and the anchor rod 10 is inserted in the positioning stopper 8, and the stopper head 11 is located at the end of the positioning stopper 8 away from the opening of the positioning groove 9.

[0032] Preferably, at least one positioning stopper 8 and one positioning anchor are provided at the same end of the box beam section 1. In this embodiment, two positioning stoppers 8 and two positioning anchors are provided at the same end of the box beam section 1, and the positioning stoppers 8 and the positioning anchors are alternately provided. The vertical section of the positioning stopper 8 is in the shape of an hourglass with one end open. When the positioning stopper 8 is not inserted into the positioning anchor, the width of the inner middle part of the positioning stopper 8 is equal to or less than the diameter of the anchor rod 10.

[0033] The bridge installation positioning steel box girder in this embodiment has a positioning connection structure set between two adjacent box girder sections 1, and the positioning anchor is inserted into the positioning limiter 8, so that the limiter head 11 is embedded in the positioning limiter 8 and cannot be removed, thereby limiting and connecting the two adjacent box girder sections 1. At least one positioning limiter 8 and one positioning anchor are set at the same end of the box girder section 1, so that the connection nodes between the two box girder sections 1 are distributed in the two box girder sections 1, and the connection stability is enhanced.

[0034] In this embodiment, the positioning limiter 8 and the positioning anchor are both fixedly connected to the box beam section 1 via a fixed steel plate 12 , and the fixed steel plate 12 and the box beam section 1 are integrally formed or welded.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A bridge installation and positioning steel box girder, characterized in that: include: A plurality of box beam sections (1), each of the box beam sections (1) being provided with a pre-positioning structure on both sides thereof; The pre-positioning structure comprises a pre-positioning rod (2) and a pre-positioning groove (3), wherein the pre-positioning rod (2) and the pre-positioning groove (3) are respectively arranged at the front and rear ends of the box beam section (1), the pre-positioning rod (2) is fixed to the front end face of the box beam section (1) and is located on the inner side of the side face, the pre-positioning rod (2) is arranged parallel to the length direction of the box beam section (1), the outer side face of the pre-positioning rod (2) is flush with the side face of the box beam section (1), the pre-positioning groove (3) is opened on the side face of the box beam section (1) and is matched with the pre-positioning rod (2), and the rear end of the pre-positioning groove (3) passes through the rear end face of the box beam section (1).

2. The bridge installation and positioning steel box girder according to claim 1, characterized in that: A first positioning rod (4) is fixed to one end of the pre-positioning rod (2) away from the box beam section (1), and a first positioning hole (5) is provided at one end of the pre-positioning groove (3) close to the pre-positioning rod (2), and the first positioning hole (5) is adapted to the first positioning rod (4).

3. The bridge installation and positioning steel box girder according to claim 2, characterized in that: The outer side surface of the pre-positioning rod (2) is coated with a first indicating coating (6), and the side surface of the box beam section (1) and the peripheral side of the pre-positioning groove (3) are coated with a second indicating coating (7).

4. The bridge installation and positioning steel box girder according to any one of claims 1 to 3, characterized in that: It also includes a positioning connection structure arranged between the two box beam sections (1), the positioning connection structure includes a positioning limit piece (8) and a positioning anchor piece, wherein a positioning groove (9) is arranged at the connection end of one of the box beam sections (1), the positioning limit piece (8) is fixed in the positioning groove (9), the vertical section of the positioning limit piece (8) is thick at the front and rear ends and thin in the middle, and the positioning limit piece (8) is open at one end close to the adjacent box beam section (1), the positioning anchor piece includes an anchor rod (10) fixed to the connection end of the other box beam section (1) and a limit head (11) fixed to the other end of the anchor rod (10), the anchor rod (10) is inserted in the positioning limit piece (8), and the limit head (11) is located at the end of the positioning limit piece (8) away from the opening.

5. The bridge installation and positioning steel box girder according to claim 4, characterized in that: At least one positioning and limiting member (8) and one positioning anchor member are arranged at the same end of the box beam section (1).

6. The bridge installation and positioning steel box girder according to claim 5, characterized in that: The positioning and limiting member (8) is made of an elastic steel plate.

7. The bridge installation and positioning steel box girder according to claim 4, characterized in that: The positioning and limiting member (8) and the positioning anchor member are both fixedly connected to the box beam section (1) via a fixed steel plate (12).

8. The bridge installation and positioning steel box girder according to claim 7, characterized in that: The fixing steel plate (12) and the box beam section (1) are integrally formed or welded together.

9. The bridge installation and positioning steel box girder according to claim 6, characterized in that: The vertical cross section of the positioning and limiting member (8) is in the shape of an hourglass with one end open.

10. The bridge installation and positioning steel box girder according to claim 9, characterized in that: When the positioning and limiting member (8) is not inserted into the positioning anchor member, the width of the inner middle portion of the positioning and limiting member (8) is equal to or smaller than the diameter of the anchor rod (10).

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