Steel box girder for positioning and mounting steel anchor box of cable-stayed bridge

Abstract

The utility model relates to the technical field of bridge anchoring and positioning devices, in particular to a steel box girder for positioning and mounting a steel anchor box of a cable-stayed bridge. The side webs are fixed to the two sides of the beam bottom plate in parallel in the length direction of the beam bottom plate, and the side webs are perpendicular to the beam bottom plate; the beam cover plate is parallel to the beam bottom plate and covers the upper portion of the side web plate, and the beam cover plate is provided with a first installation hole facilitating penetrating installation of the cable sleeve; the transverse partition plates are arranged in the containing space in parallel at intervals in the length direction of the beam bottom plate; a second mounting hole is formed in the transverse partition plate; and the positioning plate is used for positioning and mounting the steel anchor box. By arranging the positioning plates, when the steel box girder consisting of the girder bottom plate, the girder web plate and the girder cover plate is used for mounting the steel anchor box and the cable sleeve, the steel anchor box and the cable sleeve are positioned and mounted with the mounting holes according to the relative position of the positioning plates, so that the problems of accuracy and precision of the mounting angle and position of the steel anchor box are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge anchoring device technical field especially relates to a steel box girder for cable -stayed bridge steel anchor box positioning installation. BACKGROUND

[0002] In the construction of cable-stayed bridge, the positioning and installation of steel anchor box and cable sleeve pipe are extremely key links, and the installation precision directly influences the overall structural performance and safety of cable-stayed bridge.

[0003] Due to the complex structure of cable-stayed bridge and the severe stress condition, the steel anchor box needs to accurately bear cable force and transmit to the main structure of bridge. In the construction process of traditional installation mode, the installation position and angle of steel anchor box and cable sleeve pipe are determined by relying on manual measurement and experience judgment, which makes the installation precision difficult to guarantee. Therefore, the structural bearing capacity is easily reduced, the structural fatigue damage is accelerated, and the long-term stable operation of bridge is seriously threatened. SUMMARY

[0004] In order to solve the above at least one technical problem, the utility model provides a steel box girder for cable-stayed bridge steel anchor box positioning installation to solve the positioning and installation problems of steel anchor box and cable sleeve pipe.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A steel box girder for cable-stayed bridge steel anchor box positioning installation comprises:

[0007] A beam bottom plate is arranged on the bottom of the steel box girder.

[0008] Side web plates are arranged on both sides of the beam bottom plate in parallel with the length direction of the beam bottom plate, and the side web plates are perpendicular to the beam bottom plate.

[0009] A beam cover plate is arranged on the upper part of the side web plates in parallel with the beam bottom plate, and the beam cover plate is provided with a first installation hole for the installation of the cable sleeve pipe.

[0010] Transverse partitions are arranged in the accommodating space in parallel with the length direction of the beam bottom plate, and the transverse partitions are perpendicular to the beam bottom plate, the side web plates and the beam cover plate.

[0011] Positioning plates are arranged for positioning and installing the steel anchor box, and the two sides of the positioning plates are fixed perpendicularly to the inner sides of the side web plates and are perpendicular to the central axes of the steel anchor box and / or the cable sleeve pipe.

[0012] Preferably, the steel anchor box further comprises a reinforcing structure, wherein the reinforcing structure comprises:

[0013] A through-welding hole is arranged on the side of the transverse plate and vertically communicates with the beam bottom plate, the side web plate and the beam cover plate;

[0014] A first reinforcing member is arranged in the through-welding hole on one side of the side web plate along the length direction of the steel box girder and is vertically fixed to the side web plate;

[0015] A second reinforcing member is arranged in the through-welding hole on one side of the beam bottom plate along the length direction of the steel box girder and is vertically fixed to the beam bottom plate;

[0016] A third reinforcing member is arranged in the through-welding hole on one side of the beam cover plate along the length direction of the steel box girder and is vertically fixed to the beam cover plate.

[0017] Preferably, the through-welding hole comprises a straight section and an arc section connected to the straight section in a circular manner;

[0018] One side of the straight section is connected to the corresponding side web plate, beam bottom plate and beam cover plate, and the height of the straight section is greater than the thickness of the first reinforcing member, the second reinforcing member and the third reinforcing member arranged in the through-welding hole;

[0019] The sum of the length of the arc section and the length of the straight section is greater than the width of the first reinforcing member, the second reinforcing member and the third reinforcing member arranged in the through-welding hole.

[0020] Preferably, the number of the first reinforcing members is 4, and the first reinforcing members are symmetrically distributed on both sides of the transverse plate; the number of the second reinforcing members and the third reinforcing members is 7 respectively, and the second reinforcing members and the third reinforcing members are symmetrically distributed on the lower part and the upper part of the transverse plate respectively.

[0021] Preferably, the steel box girder further comprises a plurality of reinforcing ribs arranged in parallel between the positioning plate and the transverse plate; the reinforcing ribs are located on both sides of the second mounting hole and / or the third mounting hole.

[0022] Preferably, the number of the reinforcing ribs is 2.

[0023] Preferably, the first mounting hole is an inclined cylindrical hole, and the central axis of the first mounting hole coincides with the central axis of the cable sleeve.

[0024] Preferably, the transverse plate comprises a first transverse plate and a second transverse plate, and the center of the second mounting hole is located on the central axis of the cable sleeve.

[0025] The first transverse partition plate is connected with the lower part of the positioning plate, and a second mounting hole provided on the first transverse partition plate is a square hole; the second transverse partition plate is arranged on the side of the first transverse partition plate away from the positioning plate, and a second mounting hole provided on the second transverse partition plate is an inclined cylindrical hole.

[0026] Preferably, the third mounting hole is a square hole, and the center of the third mounting hole is located on the central axis of the cable sleeve.

[0027] Preferably, the positioning plate is located between the second reinforcing member and the third reinforcing member.

[0028] Compared with the prior art, the utility model has the following beneficial effects:

[0029] 1. The utility model discloses a positioning plate is arranged, so that the steel box girder composed of the beam bottom plate, the beam web and the beam cover plate is positioned and installed with the steel anchor box and the cable sleeve according to the relative position of the positioning plate when installing the steel anchor box and the cable sleeve, so that the installation angle and the position accuracy and precision of the steel anchor box are ensured.

[0030] 2. The embodiment is provided with a welding hole with an arc segment, so that when the welding hole is subjected to external force, stress can be distributed along the arc line more smoothly, avoiding excessive stress concentration at sharp corners, causing fatigue cracks or even breaking. Thus, the fatigue resistance and overall strength of the welded structure are effectively improved, and the service life of the structure is prolonged. At the same time, by arranging the welding hole on the side of the transverse partition plate for the first reinforcing member, the second reinforcing member and the third reinforcing member to pass through and fix, the strength of each main component of the steel box girder is effectively improved, the weak link that may occur when bearing the weight of the steel anchor box, cable force and other external forces is compensated for, the overall structure of the steel box girder is more solid and durable, and the positioning and installation of the steel anchor box and the stability in long-term use of the cable-stayed bridge can be better guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a structural schematic view of the steel box girder for positioning and installing the steel anchor box of the cable-stayed bridge.

[0032] Figure 2 It is a perspective view of the steel box girder for positioning and installing the steel anchor box of the cable-stayed bridge.

[0033] Figure 3 It is a front view of the steel box girder for positioning and installing the steel anchor box of the cable-stayed bridge.

[0034] Figure 4 It is a rear view of the steel box girder for positioning and installing the steel anchor box of the cable-stayed bridge.

[0035] Figure 5 It is Figure 4 It is an enlarged view of A in the middle.

[0036] Figure 6 A side view of the steel box girder for positioning and installing the steel anchor box of a cable-stayed bridge;

[0037] Figure 7 A side view of the steel box girder for positioning and installing the steel anchor box of a cable-stayed bridge; Figure 6 An enlarged view at B in the middle.

[0038] In the figure: 10, beam bottom plate; 20, side web; 30, beam cover plate; 301, first mounting hole; 40, transverse partition plate; 401, first transverse partition plate; 402, second transverse partition plate; 403, second mounting hole; 50, positioning plate; 501, third mounting hole; 60, over-welding hole; 601, straight section; 602, arc section; 70, first reinforcing member; 80, second reinforcing member; 90, third reinforcing member; 100, reinforcing rib; 110, cable sleeve. DETAILED DESCRIPTION

[0039] In order for those skilled in the art to better understand the technical solutions in the utility model, the technical solutions in the utility model embodiments will be clearly and completely described below in combination with the accompanying drawings in the utility model embodiments. Obviously, the described embodiments are only some of the embodiments in the utility model, rather than all the embodiments in the utility model.

[0040] Please refer to Figures 1-7 A steel box girder for positioning and installing the steel anchor box of a cable-stayed bridge, comprising:

[0041] a beam bottom plate 10;

[0042] a side web 20, which is fixed to both sides of the beam bottom plate 10 in parallel along the length direction of the beam bottom plate 10, and which is perpendicular to the beam bottom plate 10;

[0043] a beam cover plate 30, which is parallel to the beam bottom plate 10 and covers the upper part of the side web 20, and which is provided with a first mounting hole 301 for the installation of a cable sleeve;

[0044] a transverse partition plate 40, which is arranged in the accommodating space in parallel at intervals along the length direction of the beam bottom plate 10, and which is perpendicular to the beam bottom plate 10, the side web 20 and the beam cover plate 30; the transverse partition plate 40 is provided with a second mounting hole 403;

[0045] a positioning plate 50, which is used for positioning and installing the steel anchor box, and which is fixed to the inner side of the side web 20 at both sides in perpendicular, and is perpendicular to the central axis of the steel anchor box and / or the cable sleeve; the lower part of the positioning plate 50 is connected with the transverse partition plate 40, and is provided with a third mounting hole 501 for the installation of the steel anchor box.

[0046] The embodiment sets the positioning plate 50, so that the steel box girder composed of the beam bottom plate 10, the beam web plate and the beam cover plate 30 can realize the positioning installation of the steel anchor box (not shown in the figure) and the cable sleeve 110 with the installation holes according to the relative position of the positioning plate 50 when the steel anchor box and the cable sleeve are installed, thereby ensuring the accuracy and precision of the installation angle and position of the steel anchor box.

[0047] It should be noted that the positioning plate 50 in the embodiment can be pre-determined by a total station to determine the installation line of the positioning plate 50 on both sides of the web plate 20 during installation, and then the positioning plate 50 is welded and fixed between the both sides of the web plate 20 by welding.

[0048] Please refer to Figure 1 , Figure 3 and Figure 4 , the steel anchor box further comprises a reinforcing structure, and the reinforcing structure comprises:

[0049] The welding hole 60 is arranged on the side of the transverse plate 40 and vertically communicates with the beam bottom plate 10, the side web plate 20 and the beam cover plate 30;

[0050] The first reinforcing member 70 is fixed in the welding hole 60 on one side of the side web plate 20 in the length direction of the steel box girder and is vertically fixed with the side web plate 20;

[0051] The second reinforcing member 80 is fixed in the welding hole 60 on one side of the beam bottom plate 10 in the length direction of the steel box girder and is vertically fixed with the beam bottom plate 10;

[0052] The third reinforcing member 90 is fixed in the welding hole 60 on one side of the beam cover plate 30 in the length direction of the steel box girder and is vertically fixed with the beam cover plate 30.

[0053] It can be understood that the embodiment sets the welding hole 60 on the side of the transverse plate 40 to facilitate the fixing of the first reinforcing member 70, the second reinforcing member 80 and the third reinforcing member 90, which effectively improves the strength of each main component of the steel box girder, makes up for the weak link that may occur when the steel anchor box weight, cable force and other external forces are borne, makes the overall structure of the steel box girder more solid and durable, and better guarantees the positioning installation of the steel anchor box and the stability in long-term use of the cable-stayed bridge.

[0054] It should be noted that the number of the first reinforcing member 70 in the embodiment is 4 and is symmetrically distributed on both sides of the transverse plate 40; the number of the second reinforcing member 80 and the third reinforcing member 90 is 7 respectively and is symmetrically distributed on the lower part and the upper part of the transverse plate 40. Obviously, the number of the first reinforcing member 70, the second reinforcing member 80 and the third reinforcing member 90 can be selected according to the construction needs.

[0055] Please refer to Figure 4 and Figure 5As shown, the through-welding hole 60 comprises a straight section 601 and an arc section 602 connected with the straight section 601 in a circular manner;

[0056] The straight section 601 is connected with the corresponding side web plate 20, beam bottom plate 10 and beam cover plate 30 respectively on one side, and the height of the straight section 601 is greater than the thickness of the first reinforcing member 70, second reinforcing member 80 and third reinforcing member 90 fixed inside the through-welding hole 60;

[0057] The sum of the length of the arc section 602 and the straight section 601 is greater than the width of the first reinforcing member 70, second reinforcing member 80 and third reinforcing member 90 fixed inside the through-welding hole 60.

[0058] It should be noted that, in the embodiment, the through-welding hole 60 is provided with the arc section 602, so that when the through-welding hole 60 is subjected to external force, the stress can be distributed along the arc line more smoothly, avoiding excessive concentration of stress at sharp corners, causing fatigue cracks or even breakage. Thus, the fatigue resistance and overall strength of the welded structure are effectively improved, and the service life of the structure is prolonged.

[0059] Meanwhile, the size of the through-welding hole 60 is greater than the above-mentioned reinforcing members welded and fixed therein, so that the welder can have sufficient welding space during welding, facilitating the welding operation.

[0060] Please refer to Figure 6 and Figure 7 As shown, the steel box girder in the embodiment further comprises a plurality of reinforcing ribs 100 arranged in parallel between the positioning plate 50 and the cross partition plate 40; the reinforcing ribs 100 are located on both sides of the second mounting hole 403 and / or the third mounting hole 501.

[0061] It should be noted that the reinforcing ribs 100 strengthen the local reinforcement of the connection region of the positioning plate 50 and the cross partition plate 40, enhance the ability of this region to withstand the force generated during the installation of the steel anchor box and subsequent use, and help to maintain the accuracy of the installation position of the steel anchor box and the reliability of the entire structure.

[0062] Specifically, in the embodiment, the number of reinforcing ribs 100 is 2. Obviously, in actual construction, the number of reinforcing ribs 100 can be selected in combination with the structure space and the installation position of other components to realize the structural optimization of the connection region.

[0063] Please refer to Figure 1 and Figure 6 As shown, the cross partition plate 40 in the embodiment comprises a first cross partition plate 401 and a second cross partition plate 402, and the center of the second mounting hole 403 is located on the center axis of the cable sleeve;

[0064] The first transverse partition plate 401 is connected with the lower part of the positioning plate 50, and the second mounting hole 403 arranged on the first transverse partition plate 401 is a square hole; the second transverse partition plate 402 is arranged on the side of the first transverse partition plate 401 away from the positioning plate 50, and the second mounting hole 403 arranged on the second transverse partition plate 402 is an inclined cylindrical hole.

[0065] The first mounting hole 301 is an inclined cylindrical hole, and the central axis of the first mounting hole 301 coincides with the central axis of the cable sleeve.

[0066] The third mounting hole 501 is a square hole, and the center of the third mounting hole 501 is located on the central axis of the cable sleeve.

[0067] It should be noted that the inclined cylindrical hole in the embodiment can be understood as a hole cut on the beam cover plate 30 and the second transverse partition plate 402 with the outer circumferential circle of the cable sleeve as the contour and the straight line where the central axis of the cable sleeve is located as the path.

[0068] The four corners of the square hole are all rounded to avoid structural damage caused by stress concentration and affect the service life.

[0069] In order to facilitate the installation of the positioning plate 50, the positioning plate 50 is located between the second reinforcing member 80 and the third reinforcing member 90 in the embodiment.

[0070] The installation process of the steel box girder in the application is as follows:

[0071] S1, installing the beam bottom plate 10;

[0072] S2, installing the side web plate 20 parallel to each other and perpendicular to the beam bottom plate 10 on both sides of the beam bottom plate 10;

[0073] S3, installing the transverse partition plate 40 parallel to each other between the side web plates 20, and the transverse partition plate 40 is perpendicular to the beam bottom plate 10 and the side web plate 20 at the same time;

[0074] S4, using the total station to loft the installation line of the positioning plate 50 on the side web plates 20 on both sides, and installing the steel anchor box according to the installation line;

[0075] S5, installing the cable sleeve and the beam cover plate 30.

[0076] The application sets the positioning plate 50, so that the steel box girder composed of the beam bottom plate 10, the beam web plate and the beam cover plate 30 can realize the positioning and installation of the steel anchor box and the cable sleeve according to the relative position of the positioning plate 50 when the steel anchor box and the cable sleeve are installed, thereby ensuring the accuracy and precision of the installation angle and position of the steel anchor box.

[0077] The above describes the specific implementation of the embodiments of the present application, and it should be noted that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A steel box girder for positioning and installing steel anchor boxes in cable-stayed bridges, characterized in that, include: Beam bottom plate (10); Side webs (20) are fixed parallel to the two sides of the bottom plate (10) along the length of the bottom plate (10), and the side webs (20) are perpendicular to the bottom plate (10). A beam cover plate (30) is parallel to the bottom plate (10) and covers the upper part of the side web plate (20). The beam cover plate (30) has a first mounting hole (301) for easy installation of the cable sleeve. The bottom plate (10), the side web plate (20) and the beam cover plate (30) form a space for installing the steel anchor box and the cable sleeve. A diaphragm (40) is arranged parallel to each other along the length of the beam bottom plate (10) in the accommodating space. The diaphragm (40) is perpendicular to the beam bottom plate (10), the side web plate (20) and the beam cover plate (30). The diaphragm (40) is provided with a second mounting hole (403). The positioning plate (50) is used to position and install the steel anchor box. The two sides of the positioning plate (50) are fixed perpendicularly to the inner side of the side web plate (20) and perpendicular to the central axis of the steel anchor box and / or the cable sleeve. The lower part of the positioning plate (50) is connected to the transverse diaphragm (40) and is provided with a third mounting hole (501) to facilitate the installation of the steel anchor box.

2. The steel box girder for positioning and installing steel anchor boxes in cable-stayed bridges according to claim 1, characterized in that, The steel anchor box also includes a reinforcing structure, which comprises: Through-welding holes (60) are opened on the periphery of the transverse diaphragm (40) and are perpendicularly connected to the beam bottom plate (10), side web plate (20) and beam cover plate (30); The first reinforcing member (70) is inserted through and fixed in the weld hole (60) on one side of the side web plate (20) along the length direction of the steel box girder, and is fixed perpendicularly to the side web plate (20); The second reinforcing member (80) is inserted through and fixed in the weld hole (60) on one side of the bottom plate (10) of the beam along the length of the steel box girder, and is fixed perpendicularly to the bottom plate (10); The third reinforcing member (90) is inserted through and fixed in the weld hole (60) on one side of the beam cover plate (30) along the length of the steel box girder, and is fixed perpendicularly to the beam cover plate (30).

3. The steel box girder for positioning and installing steel anchor boxes in cable-stayed bridges according to claim 2, characterized in that, The through-hole (60) includes a straight segment (601) and an arc segment (602) that is smoothly connected to the straight segment (601). The straight segment (601) is connected to the corresponding side web plate (20), the beam bottom plate (10) and the beam cover plate (30) on one side respectively. The height of the straight segment (601) is greater than the thickness of the first reinforcing member (70), the second reinforcing member (80) and the third reinforcing member (90) fixed inside the weld hole (60). The sum of the lengths of the arc segment (602) and the straight segment (601) is greater than the widths of the first reinforcing member (70), the second reinforcing member (80), and the third reinforcing member (90) fixed inside the weld hole (60).

4. The steel box girder for positioning and installing steel anchor boxes in cable-stayed bridges according to claim 2, characterized in that, The number of the first reinforcing member (70) is 4, and they are symmetrically distributed on both sides of the transverse partition (40); the number of the second reinforcing member (80) and the third reinforcing member (90) is 7, and they are symmetrically distributed on the lower and upper parts of the transverse partition (40), respectively.

5. The steel box girder for positioning and installing steel anchor boxes in cable-stayed bridges according to claim 1, characterized in that, The steel box girder also includes a number of reinforcing ribs (100) arranged in parallel between the positioning plate (50) and the transverse diaphragm (40); the reinforcing ribs (100) are located on both sides of the second mounting hole (403) and / or the third mounting hole (501).

6. The steel box girder for positioning and installing steel anchor boxes in cable-stayed bridges according to claim 5, characterized in that, The number of reinforcing ribs (100) is 2.

7. The steel box girder for positioning and installing steel anchor boxes in cable-stayed bridges according to any one of claims 1-6, characterized in that, The first mounting hole (301) is an oblique cylindrical hole, and the central axis of the first mounting hole (301) coincides with the central axis of the cable sleeve.

8. The steel box girder for positioning and installing steel anchor boxes in cable-stayed bridges according to any one of claims 1-6, characterized in that, The diaphragm (40) includes a first diaphragm (401) and a second diaphragm (402), and the center of the second mounting hole (403) is located on the central axis of the cable sleeve; The first diaphragm (401) is connected to the lower part of the positioning plate (50), and the second mounting hole (403) provided on the first diaphragm (401) is a square hole; the second diaphragm (402) is located on the side of the first diaphragm (401) away from the positioning plate (50), and the second mounting hole (403) provided on the second diaphragm (402) is an oblique cylindrical hole.

9. The steel box girder for positioning and installing steel anchor boxes in cable-stayed bridges according to any one of claims 1-6, characterized in that, The third mounting hole (501) is a square hole, and the center of the third mounting hole (501) is located on the central axis of the cable sleeve.

10. The steel box girder for positioning and installing steel anchor boxes in cable-stayed bridges according to claim 2, characterized in that, The positioning plate (50) is located between the second reinforcing member (80) and the third reinforcing member (90).

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