CN216689081U - Device for safely removing temporary rod piece of steel truss girder bridge - Google Patents
Device for safely removing temporary rod piece of steel truss girder bridge Download PDFInfo
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- CN216689081U CN216689081U CN202220193301.0U CN202220193301U CN216689081U CN 216689081 U CN216689081 U CN 216689081U CN 202220193301 U CN202220193301 U CN 202220193301U CN 216689081 U CN216689081 U CN 216689081U
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- upper chord
- section upper
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- pipe fitting
- middle pipe
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Abstract
The utility model relates to the technical field of bridge construction, in particular to a device for safely dismantling a temporary rod of a steel truss bridge, which is characterized in that: comprises a connecting device and a slow-releasing device; the connecting device comprises a front section upper chord, a middle pipe fitting and a rear section upper chord; one end of the middle pipe fitting is detachably connected with the front section upper chord, and the other end of the middle pipe fitting is detachably connected with the rear section upper chord; the slow release device comprises two flange plates and a piercing jack; the flange plates are sleeved outside the front section upper chord and the rear section upper chord; the flange plate is provided with a slotted hole for the steel strand of the piercing jack to pass through and fix. The stress can be released by pulling the steel strand through the penetrating jack after the steel strand passes through the flange plate. The whole process has no vibration influence on the whole structure, and the construction process is safe and reliable.
Description
Technical Field
The utility model relates to the technical field of bridge construction, in particular to a device for safely dismantling a temporary rod of a steel truss bridge.
Background
With the development of bridge structures and forms, the construction difficulty is higher and higher, the investment of temporary structures in construction is not neglected more and more, and the safe dismantling of rods in the construction process also becomes a problem to be solved urgently. The steel bridge is largely used on bridges with large and medium spans due to the characteristics of high material strength, large elastic modulus and light components, wherein the steel truss bridge is composed of truss rods, each truss rod mainly bears axial force, the condition of rod removal occurs due to system conversion and other reasons in the construction process, the stress influence on the whole structure is complicated due to the rod removal, and the caused redistribution of the internal force of the structure has the characteristics of sudden change, unpredictability and uncontrollable. For the cutting of the steel structure rod, a mechanical cutting method is usually adopted on site, and the method ensures that the structural stress changes suddenly and the relaxation time is short, so that the vibration of the whole structure is likely to be caused, and the construction difficulty is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a device for safely dismantling a temporary rod piece of a steel truss girder bridge, which can realize stress release by stretching a steel strand through a piercing jack after the steel strand passes through a flange plate.
The embodiment of the utility model is realized by the following technical scheme:
a device for safely dismantling a temporary rod piece of a steel truss girder bridge comprises a connecting device and a slow release device; the connecting device comprises a front section upper chord, a middle pipe fitting and a rear section upper chord; one end of the middle pipe fitting is detachably connected with the front section upper chord, and the other end of the middle pipe fitting is detachably connected with the rear section upper chord; the slow release device comprises two flange plates and a piercing jack; the flange plates are sleeved outside the front section upper chord and the rear section upper chord; the flange plate is provided with a circular slotted hole for the steel strand of the through jack to pass through and fix; the center-penetrating jack is arranged between the two flange plates.
Furthermore, the front section upper chord, the rear section upper chord and the middle pipe fitting are all provided with screw holes in a matching mode, so that two ends of the middle pipe fitting are fixedly connected with the front section upper chord and the rear section upper chord through bolts respectively.
Furthermore, the front section upper chord, the rear section upper chord and the middle pipe fitting are all rectangular pipe fittings; the front section upper chord and the rear section upper chord and each connecting surface between the middle pipe fittings are provided with six first bolts, and the six first bolts are arranged in two rows and three rows.
Furthermore, the end of the first bolt is in a strip shape; the surfaces of the front section upper chord, the rear section upper chord and the middle pipe fitting are provided with elongated slotted holes for the end of the first bolt to pass through; the length of the end of the first bolt is greater than the width of the elongated slotted hole.
Further, the flange plate comprises two identical flange components; the two flange assemblies are spliced into the flange plate; connecting plates are arranged at the splicing positions of the two flange assemblies; the two connecting plates are mutually attached and connected through screws.
Furthermore, the flange assembly is formed by welding and splicing five assembly blocks.
Furthermore, stiffening ribs are respectively arranged on the two sides of the circular slotted hole of the flange assembly; the connecting plates are stiffening ribs.
The technical scheme of the embodiment of the utility model at least has the following advantages and beneficial effects:
when the steel strand tensioning jack is used, the two flange plates are fixed to the front and rear upper chords respectively, then the jack is fixed to the flange plates, and the steel strand penetrates through the flange plates and is tensioned through the jack to release stress. After the middle pipe fitting is removed, the axial force is slowly released by the jack until the axial force of the rod piece is zero, and at the moment, the connecting device and the slow-release device are removed. The whole process has no vibration influence on the whole structure, and the construction process is safe and reliable.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a steel girder bridge to which an apparatus for safely dismantling a temporary bar of the steel girder bridge according to the present invention is applied;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 3 is a schematic view of a flange plate structure of a device for safely removing a temporary member of a steel truss girder bridge according to the present invention;
fig. 4 is a schematic view of a first bolt in the device for safely removing the temporary rod of the steel truss girder bridge provided by the utility model;
fig. 5 is a schematic top view of a first bolt and a connecting surface of the device for safely removing a temporary rod of a steel truss girder bridge provided by the utility model;
fig. 6 is a schematic view of a first bolt and a connecting surface of the device for safely removing a temporary member of a steel truss bridge according to the present invention;
icon: 11-front section upper chord, 12-rear section upper chord, 13-middle pipe fitting, 14-elongated slotted hole, 15-first bolt, 2-flange plate, 21-flange component, 22-stiffening rib, 23-connecting plate, 24-screw, 25-circular slotted hole, 3-center-penetrating jack, 4-electric oil pump and 5-steel strand.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of this application is used, the description is merely for convenience and simplicity of description, and it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
According to the figures 1-6, the utility model provides a device for safely removing a temporary rod piece of a steel truss girder bridge, which comprises a connecting device and a slow release device. The connecting device comprises a front section upper chord 11, a middle pipe piece 13 and a rear section upper chord 12. When the integral pushing construction method is adopted in the steel truss bridge engineering, one end of the front section upper chord 11 is connected with the steel truss bridge, and the other end of the front section upper chord is in bolted connection with the middle pipe fitting 13; one end of the middle pipe fitting 13, which is far away from the front section upper chord 11, is in bolted connection with the rear section upper chord 12; one end of the rear upper chord 12, which is far away from the middle pipe fitting 13, is connected with the adjacent span of the steel truss bridge connected with the front upper chord 11. The connecting device enables the steel truss girder bridge to be integrally connected. The slow release device comprises a flange plate 2 and a piercing jack 3. The outer parts of the front section upper chord 11 and the rear section upper chord 12 are both sleeved with a flange plate 2. The flange plates 2 are oppositely provided with two circular slotted holes 25 for the penetrating jacks 3 to pass through and fix the steel strands 5, the penetrating jacks 3 are arranged between the two flange plates 2, and the penetrating jacks 3 are connected with the electric oil pump 4. After the pushing is in place, one flange plate 2 is sleeved at the designated position of the front section upper chord 11 and is welded, and the other flange plate 2 is sleeved at the designated position of the rear section upper chord 12 and is welded. And a penetrating jack 3 is fixedly arranged between the two flange plates 2, the tension of the intermediate pipe fitting 13 is released by tensioning the steel strand 5, then the intermediate pipe fitting 13 is disassembled, and finally the tension of the steel strand 5 is slowly released by using the penetrating jack 3 until the whole structure reaches a safe cutting state.
In this embodiment, the front upper chord 11, the rear upper chord 12 and the middle pipe fitting 13 are all provided with screw holes in a matching manner, so that two ends of the middle pipe fitting 13 are respectively fixedly connected with the front upper chord 11 and the rear upper chord 12 through bolts. The bolt fixed connection is convenient for disconnecting the middle pipe fitting 13 from the front section upper chord 11 and the rear section upper chord 12 after pushing in place.
In this embodiment, the front upper chord 11, the rear upper chord 12 and the middle pipe 13 are all rectangular steel pipes. There are four connection faces between anterior segment upper chord 11 and middle pipe fitting 13, have four connection faces between posterior segment upper chord 12 and middle pipe fitting 13, and eight connection faces all set up six first bolts 15, and six first bolts 15 set up according to two lines of three rows. In order to make the connection between the middle pipe member 13 and the front and rear upper chords 11 and 12 more comprehensive and secure.
In this embodiment, the end of the first bolt 15 is in a long strip shape, and the surfaces of the front-section upper chord 11, the rear-section upper chord 12 and the middle pipe 13 are provided with a long strip-shaped slotted hole 14 through which the end of the first bolt 15 passes. The length of the end of the first bolt 15 is greater than the width of the elongated slotted hole 14. When the installation is carried out, the first bolt 15 is directly aligned to the elongated slotted hole 14, the end of the first bolt is placed inside the elongated slotted hole 14, then the first bolt is rotated by 90 degrees to enable the first bolt to be incapable of passing through the elongated slotted hole 14, and then the nut is screwed up to enable the first bolt to be fixed. When the nut is unscrewed for disassembly, the first bolt 15 is turned so that the end of the first bolt 15 is aligned with the elongated slotted hole 14, and then the first bolt 15 is taken out of the elongated slotted hole 14. This arrangement makes it easier to install and remove the middle pipe 13, the front upper chord 11 and the rear upper chord 12.
In this embodiment, the flange 2 comprises two identical flange assemblies 21. The two flange assemblies 21 are spliced to form the flange plate 2, and connecting plates 23 are arranged at the splicing positions of the two flange assemblies 21. The two connecting plates 23 are attached to each other and connected by screws 24. When the first flange plate 2 and the second flange plate 2 are sleeved on the front upper chord 11 or the rear upper chord 12 by the design, the two flange assemblies 21 can be sleeved on the front upper chord 11 or the rear upper chord 12, then connected into one flange plate 2 by bolts, and finally welded on the front upper chord 11 or the rear upper chord 12 after confirming the positions. When in use, the installation is carried out again, and the installation in advance is avoided. If the flange 2 is mounted in advance, it needs to be detached and then remounted if it is damaged before use, so that the operation is very cumbersome and wasteful.
In this embodiment, the flange assembly 21 is formed by welding and splicing five assembly blocks. So that it can be stronger than an integrally formed one and can withstand greater stresses.
In this embodiment, the circular slot 25 is disposed in the middle of the arc-shaped section of the flange assembly 21, and the flange assembly 21 is provided with the stiffening ribs 22 on both sides of the circular slot 25. The connecting plates 23 of the flange assembly 21 are stiffening ribs 22. The structure aims to ensure that the structure can be locally stable and transmit concentrated force at the position with concentrated load, and the stability and torsion resistance of the structure are improved. The flange plate 2 can better bear tension in the tensioning process of the center-penetrating jack 3, and cannot be damaged in the tensioning process.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a device that is used for interim member of steel truss bridge to demolish safely which characterized in that: comprises a connecting device and a slow-releasing device; the connecting device comprises a front section upper chord (11), a middle pipe fitting (13) and a rear section upper chord (12); one end of the middle pipe fitting (13) is detachably connected with the front section upper chord (11), and the other end of the middle pipe fitting is detachably connected with the rear section upper chord (12); the slow release device comprises two flange plates (2) and a piercing jack (3); the flange plates (2) are sleeved outside the front section upper chord (11) and the rear section upper chord (12); the flange plate (2) is provided with a circular slotted hole (25) for the steel strand (5) of the through jack (3) to pass through and fix; the piercing jack (3) is arranged between the two flange plates (2).
2. The device for safely dismantling a temporary rod of a steel girder bridge according to claim 1, wherein: and the front section upper chord (11), the rear section upper chord (12) and the middle pipe fitting (13) are provided with screw holes in a matching way, so that two ends of the middle pipe fitting (13) are respectively fixedly connected with the front section upper chord (11) and the rear section upper chord (12) through bolts.
3. The device for safely dismantling a temporary rod of a steel girder bridge according to claim 2, wherein: the front section upper chord (11), the rear section upper chord (12) and the middle pipe fitting (13) are all rectangular pipe fittings; every connection face between anterior segment upper chord (11) and back end upper chord (12) and middle pipe fitting (13) all sets up six first bolt (15), and six first bolt (15) set up according to two rows of three columns.
4. The device for safely dismantling a temporary rod of a steel girder bridge according to claim 3, wherein: the end of the first bolt (15) is in a strip shape; the surfaces of the front section upper chord (11), the rear section upper chord (12) and the middle pipe fitting (13) are provided with elongated slotted holes (14) for the end of the first bolt (15) to pass through; the length of the end of the first bolt (15) is larger than the width of the elongated slotted hole (14).
5. The device for safely dismantling a temporary rod of a steel girder bridge according to claim 4, wherein: the flange plate (2) comprises two identical flange components (21); the two flange assemblies (21) are spliced into the flange plate (2); connecting plates (23) are arranged at the splicing positions of the two flange assemblies (21); the two connecting plates (23) are mutually attached and connected through a screw (24).
6. The device for safely dismantling a temporary rod of a steel girder bridge according to claim 5, wherein: the flange assembly (21) is formed by welding and splicing five assembly blocks.
7. The device for safely dismantling a temporary rod of a steel girder bridge according to claim 6, wherein: stiffening ribs (22) are respectively arranged on the two sides of the circular slotted hole (25) of the flange component (21); the connecting plates (23) are stiffening ribs (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220193301.0U CN216689081U (en) | 2022-01-24 | 2022-01-24 | Device for safely removing temporary rod piece of steel truss girder bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220193301.0U CN216689081U (en) | 2022-01-24 | 2022-01-24 | Device for safely removing temporary rod piece of steel truss girder bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216689081U true CN216689081U (en) | 2022-06-07 |
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ID=81826939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220193301.0U Active CN216689081U (en) | 2022-01-24 | 2022-01-24 | Device for safely removing temporary rod piece of steel truss girder bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216689081U (en) |
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2022
- 2022-01-24 CN CN202220193301.0U patent/CN216689081U/en active Active
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