CN219386034U - Steel-concrete combined truss girder positioning and adjusting device - Google Patents
Steel-concrete combined truss girder positioning and adjusting device Download PDFInfo
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- CN219386034U CN219386034U CN202320603369.6U CN202320603369U CN219386034U CN 219386034 U CN219386034 U CN 219386034U CN 202320603369 U CN202320603369 U CN 202320603369U CN 219386034 U CN219386034 U CN 219386034U
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Abstract
The utility model discloses a steel-concrete combined truss girder positioning and adjusting device, which relates to the technical field of bridge construction and comprises the following components: the distribution beams are arranged in a rectangular structure; a lower connecting rod, each distribution beam is connected with a lower connecting rod; one end of each lower connecting rod, which is far away from the distribution beam, is connected with an upper connecting rod through a double-head screw rod in a threaded manner; one end of each upper connecting rod, which is far away from the double-headed screw, is connected with a supporting plate; one end of the supporting leg is connected with a bottom plate, and the bottom plate is connected with the supporting plate; the upper cross beam is connected with one end of the supporting leg, which is far away from the bottom plate, and a reinforcing rib is arranged at the connection position of the supporting leg and the upper cross beam and used for connecting the supporting leg and the upper cross beam. The utility model can solve the technical problems that the steel truss girder is inaccurate in positioning, inaccurate in measurement, free of operation space for constructors, incapable of closing a lower road and incapable of fine adjustment of the upper, lower, left and right directions of the steel truss girder.
Description
Technical Field
The utility model relates to the technical field of bridge construction, in particular to a steel-concrete combined truss girder positioning and adjusting device.
Background
Steel-concrete composite truss beams are a new structure developed in recent years, which is essentially a composite structure of truss and trough beams. The upper chord and the lower chord are both of concrete structures, so that the steel consumption is greatly reduced, the rigidity of the structure is obviously enhanced compared with that of the steel truss girder, the engineering cost is obviously reduced, and the workload of later maintenance is greatly reduced because only the web members are of steel structures. Compared with the tied arch bridge, the building height can be reduced by 1.5-2.0m, the construction is more convenient, and the influence on ground road traffic can be greatly reduced. The structure also has the advantages of novel structure, steel saving, large span, thin beam surface and the like, and can obtain larger under-bridge clearance compared with other bridges with concrete structures, so that the structure has remarkable advantages in bridge construction height-limited and bridge clearance-limited overpasses. The steel-concrete combined structure is a new technology introduced from abroad in recent years, but the span is smaller, and 1-80m spans in domestic bridges and belongs to the largest span. The steel-concrete combined truss girder installation and positioning problems in the form belong to new technologies, the similar technologies can be referred to in the construction of the lower bearing type simply supported steel truss girder, the bridge deck system, the upper and lower parallel connection and the cross beam of the structure all adopt high-strength bolt bolting forms, and the on-site hoisting adopts a hoisting device and an in-situ support method.
Problems with analysis related art:
1. when the in-situ support method is erected, the hoisting equipment is arranged below, the road below is semi-closed or completely closed, and traffic is restricted.
2. When the single rod piece of the steel truss girder is hoisted, the steel truss girder belongs to single rod piece suspension assembly, no positioning support is arranged on the bridge deck, the positioning difficulty is high, and constructors do not have operation space, so that the safety risk is high.
3. When the steel truss girder is installed and lifted, each rod piece needs to be measured, and the measurement is inaccurate due to dynamic measurement.
4. After the steel truss beam is installed, the steel truss beam is not provided with a height and longitudinal and transverse adjusting device, and cannot be finely adjusted.
Therefore, how to provide a steel-concrete combined truss girder positioning and adjusting device is a problem which needs to be solved by the technicians in the bridge field at present.
Disclosure of Invention
In view of the above, the utility model provides a positioning and adjusting device for a steel-concrete combined truss girder, which aims to solve the problems in the prior art, and solves the technical problems that the steel truss girder is positioned inaccurately, the measurement inaccurately, constructors have no operation space, a lower road cannot be closed, and the four directions of the steel truss girder can not be finely adjusted.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a steel-concrete combined truss girder positioning and adjusting device, which comprises:
the distribution beams are arranged in a rectangular structure;
a lower connecting rod, each distribution beam is connected with one lower connecting rod;
one end of each lower connecting rod far away from the distribution beam is connected with one upper connecting rod through a double-head screw rod in a threaded manner;
one end of each upper connecting rod, which is far away from the double-headed screw rod, is connected with one supporting plate;
the support leg is connected with a bottom plate at one end, and the bottom plate is connected with the support plate;
the upper beam, the upper beam with the landing leg is kept away from the one end of bottom plate is connected, the landing leg with the position that the upper beam is connected is provided with the strengthening rib, the strengthening rib is used for connecting landing leg and upper beam.
The steel-concrete combined truss girder positioning and adjusting device provided by the utility model further comprises a lower connecting plate, wherein the supporting legs are connected with the upper cross beam through the lower connecting plate, and the reinforcing ribs are arranged between the lower connecting plate and the supporting legs.
The steel-concrete combined truss girder positioning and adjusting device provided by the utility model further comprises a horizontal support, wherein adjacent lower connecting rods are connected through the horizontal support, and two ends of the horizontal support are respectively detachably connected with the lower connecting rods.
According to the steel-concrete combined truss girder positioning and adjusting device provided by the utility model, the supporting legs comprise the first sub-legs and the second sub-legs, the first sub-legs and the second sub-legs are of V-shaped structures, one ends of the first sub-legs and the second sub-legs, which are close to the bottom plate, are mutually connected, and the other ends of the first sub-legs and the second sub-legs are arranged in an opening manner and are respectively connected with the lower connecting plate.
According to the steel-concrete combined truss girder positioning and adjusting device provided by the utility model, the supporting legs are arranged between the first sub-legs and the second sub-legs.
The steel-concrete combined truss girder positioning and adjusting device provided by the utility model further comprises an upper connecting plate, wherein the upper connecting plate is fixedly arranged on one side, far away from the supporting leg, of the upper cross beam.
The steel-concrete combined truss girder positioning and adjusting device provided by the utility model further comprises a horizontal support, wherein the horizontal support is fixedly arranged on the upper connecting plate.
Compared with the prior art, the utility model discloses the steel-concrete combined truss girder positioning and adjusting device, which can realize height adjustment of the device by connecting the lower connecting rod and the upper connecting rod through the double-headed screw, and meanwhile, the lower connecting rod is arranged by utilizing the bridge deck rainwater hole, so that the concrete bridge deck is not damaged; the distribution beam is connected with the bailey beam at the lower part of the bridge deck through nuts and U-shaped clamps, so that the disassembly is convenient; the positioning and adjusting device avoids the positions of the lower chord node steel bars and the templates, has large space and meets the operation requirements of constructors; the positioning adjusting device is detachable and is connected through bolts, nuts and double-headed screws, so that the positioning adjusting device is convenient to operate, novel in structure and reusable; the positioning adjusting device is quick and simple in construction, the adjusting precision is improved, the line shape of the steel truss girder is ensured, and a theoretical basis is provided for the subsequent bridge construction of the same type; saving the use cost of manpower, materials and machines.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural view of a steel-concrete composite truss girder positioning and adjusting device provided by the utility model;
FIG. 2 is a left side view of FIG. 1 provided by the present utility model;
FIG. 3 is a cross-sectional view taken along the direction A-A in FIG. 1, in accordance with the present utility model;
FIG. 4 is an enlarged view of part of B of FIG. 1 provided by the present utility model;
fig. 5 is a partial enlarged view of C in fig. 2 provided by the present utility model.
Wherein: 1 is a distribution beam; 2 is a lower connecting rod; 3 is an upper connecting rod; 4 is a supporting plate; 5 is a supporting leg; 51 is a first sub-leg; 52 is a second sub-leg; 6 is an upper cross beam; 7 is a double-ended screw; 8 is a bottom plate; 9 is a lower connecting plate; 10 is a horizontal support; 11 is a reinforcing rib; 12 is a reinforcing rib; 13 is a supporting leg; 14 is an upper connecting plate; 15 is a horizontal support; 16 is a baffle.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-5, the embodiment of the utility model discloses an aspect, and the utility model provides a steel-concrete combined truss girder positioning and adjusting device, which comprises:
the distribution beams 1, the distribution beams 1 are four, and the four distribution beams 1 are arranged in a rectangular structure;
a lower connecting rod 2, each distribution beam 1 is connected with one lower connecting rod 2;
the upper connecting rods 3, and one end of each lower connecting rod 2 far away from the distribution beam 1 is connected with one upper connecting rod 3 through a double-head screw rod 7 in a threaded manner;
the support plates 4 are connected with one end of each upper connecting rod 3 far away from the double-headed screw 7;
the support legs 5, one end of the support legs 5 is connected with a bottom plate 8, and the bottom plate 8 is connected with the support plate 4;
the upper cross beam 6, the upper cross beam 6 is connected with one end of the supporting leg 5 far away from the bottom plate 8, the position where the supporting leg 5 is connected with the upper cross beam 6 is provided with a reinforcing rib 11, and the reinforcing rib 11 is used for connecting the supporting leg 5 and the upper cross beam 6.
It should be noted that: the lower connecting rod 2 is connected with the distribution beam 1 below the bridge deck by utilizing a bridge deck rainwater hole, the distribution beam 1 is connected with the bailey beam below the bridge deck by nuts and U-shaped clamps, the concrete bridge deck is not damaged, the disassembly is convenient, the distribution beam 1 is formed by connecting two channel steels, the open ends of the two channel steels are arranged in a back way, the end parts of the two channel steels are connected by end plates, the bottom end of the lower connecting rod 2 is connected with a screw rod, nuts matched with screw threads are welded between the two channel steels, the upper connecting rod 3 and the lower connecting rod 2 are connected by the double-end screw rod 7, the height of the steel-concrete combined truss girder positioning and adjusting device can be adjusted by rotating the double-end screw rod 7, preferably, the length of the double-end screw rod 7 is 390mm, screw areas with 175mm are respectively arranged at two ends, the screw areas at two ends are opposite in rotation direction, the upper cross beam 6 is used for placing jacks, the positioning and adjusting device avoids the positions of lower chord joint steel bars and templates, the space is large, and the operating requirements of constructors are met; the positioning and adjusting device is detachable and is connected through bolts, nuts and double-headed screws 7, so that the positioning and adjusting device is convenient to operate, novel in structure and reusable; the positioning adjusting device is quick and simple in construction, the adjusting precision is improved, the line shape of the steel truss girder is ensured, and a theoretical basis is provided for the subsequent bridge construction of the same type; saving the use cost of manpower, materials and machines.
The steel-concrete combined truss girder positioning and adjusting device provided by the utility model further comprises a lower connecting plate 9, wherein the supporting legs 5 are connected with the upper cross beam 6 through the lower connecting plate 9, and reinforcing ribs 11 are arranged between the lower connecting plate 9 and the supporting legs 5. Through the setting of lower connecting plate 9 and strengthening rib 11, can promote the joint strength between landing leg 5 and the entablature 6, utilize lower connecting plate 9 can provide bigger holding surface for entablature 6.
The steel-concrete combined truss girder positioning and adjusting device provided by the utility model further comprises a horizontal support 10, wherein adjacent lower connecting rods 2 are connected through the horizontal support 10, and two ends of the horizontal support 10 are respectively and detachably connected with the lower connecting rods 2. Through the setting of horizontal support 10, horizontal support 10 can strengthen the joint strength between the lower connecting rod 2, provides more stable holding power for steel and concrete combination truss girder positioning adjustment device, and the dismouting of whole device is convenient for to the mode of detachable connection, helps used repeatedly.
According to the steel-concrete combined truss girder positioning and adjusting device provided by the utility model, the supporting leg 5 comprises the first sub-leg 51 and the second sub-leg 52, the first sub-leg 51 and the second sub-leg 52 are of a V-shaped structure, one ends of the first sub-leg 51 and the second sub-leg 52, which are close to the bottom plate 8, are mutually connected, and the other ends of the first sub-leg 51 and the second sub-leg 52 are provided with openings and are respectively connected with the lower connecting plate 9. By arranging the legs 5 in a V-shaped structure formed by the first sub-legs 51 and the second sub-legs 52, the connection strength between the lower connecting rod 2 and the upper cross beam 6 can be improved, and in this embodiment, each upper cross beam 6 is connected and supported by four legs 5, that is, the lower connecting rod 2 and the upper cross beam 6 are supported by four first sub-legs 51 and four second legs 5, and thus stable support can be provided for the upper cross beam 6.
In this embodiment, preferably, the open ends of the first sub-leg 51 and the second sub-leg 52 are spaced apart along the length direction of the upper beam 6, the second sub-leg 52 is close to the end of the upper beam 6, the reinforcing rib 11 is disposed at the open end positions of the first sub-leg 51 and the second sub-leg 52, the open ends of the first sub-leg 51 and the second sub-leg 52 are connected by the reinforcing rib 11 to promote the overall strength of the first sub-leg 51 and the second sub-leg 52, and the reinforcing rib 11 and the lower connecting plate 9 are fixed by bolts in a detachable connection manner, and in addition, the reinforcing rib 12 is disposed at the connection region of the second sub-leg 52 and the lower connecting plate 9, and the reinforcing rib 12 connects the second sub-leg 52 and the lower connecting plate 9.
According to the steel-concrete combined truss girder positioning and adjusting device provided by the utility model, the supporting leg 13 is arranged between the first sub-leg 51 and the second sub-leg 52. By the arrangement of the support legs 13, the connection strength between the first sub-leg 51 and the second sub-leg 52 can be improved, and the support strength for the upper cross member 6 can be improved.
The steel-concrete combined truss girder positioning and adjusting device provided by the utility model further comprises an upper connecting plate 14, wherein the upper connecting plate 14 is fixedly arranged on one side of the upper cross beam 6 far away from the supporting leg 5. The provision of the upper connection plate 14 provides a stable support surface for the jack.
The steel-concrete combined truss girder positioning and adjusting device provided by the utility model further comprises a horizontal support 15, wherein the horizontal support 15 is fixedly arranged on the upper connecting plate 14. The jack can be limited through the setting of the horizontal support 15, and simultaneously, the baffle 16 is also arranged on the upper connecting plate 14, and the position of the jack is limited through the baffle 16 and the horizontal support 15.
The steel-concrete combined truss girder positioning and adjusting device is further explained by a steel-concrete combined truss girder positioning and adjusting method, which adopts the steel-concrete combined truss girder positioning and adjusting device and comprises the following specific steps:
nuts are respectively welded on the four distribution beams 1, nuts are respectively welded at one ends of the four lower connecting rods 2, screws are welded at the other ends of the four lower connecting rods 2, and one ends of the four lower connecting rods 2, which are welded, are in one-to-one correspondence with the nuts on the four distribution beams 1;
a nut is welded at one end of the upper connecting rod 3, and one end of the upper connecting rod 3, which is welded with the nut, is connected with one end of the lower connecting rod 2, which is far away from the distribution beam 1, through a double-headed screw 7;
the support plate 4 is welded at one end of the upper connecting rod 3 far away from the lower connecting rod 2, the bottom plate 8 is welded at one end of the supporting leg 5, the bottom plate 8 and the support plate 4 are connected through bolts, and one end of the supporting leg 5 far away from the bottom plate 8 is connected with the upper cross beam 6.
It should be noted that: in the process of the steel-concrete combined truss girder positioning adjustment method, eight groups of steel-concrete combined truss girder positioning adjustment devices are arranged, firstly, single elements are manufactured in a processing plant, the steel-concrete combined truss girder positioning adjustment devices are transported to a construction site for bridge deck assembly and are hung to a bridge deck, firstly, elevation is 5mm higher than design elevation, then, symmetrical eight groups of steel-concrete combined truss girder positioning adjustment devices are sequentially hung, an upper cross beam 6 is installed, bolts of an upper chord node and a lower chord node are screwed, initial screwing and final screwing are not needed, and the upper cross beam 6 is in a natural stress state. And then measuring the coordinates of each node of the lower chord node, the upper chord node, the central line, the left side line, the right side line and the starting point, and finding errors for adjustment. When carrying out elevation adjustment, double-end screw rod 7 is 0.8m apart from bridge floor bottom plate 8, highly suitable workman's operation, and the bridge floor does not have the reinforcing bar template, and construction space is big, and safety has the assurance.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The utility model provides a steel and concrete combination truss girder positioning adjustment device which characterized in that includes:
the distribution beams are arranged in a rectangular structure;
a lower connecting rod, each distribution beam is connected with one lower connecting rod;
one end of each lower connecting rod far away from the distribution beam is connected with one upper connecting rod through a double-head screw rod in a threaded manner;
one end of each upper connecting rod, which is far away from the double-headed screw rod, is connected with one supporting plate;
the support leg is connected with a bottom plate at one end, and the bottom plate is connected with the support plate;
the upper beam, the upper beam with the landing leg is kept away from the one end of bottom plate is connected, the landing leg with the position that the upper beam is connected is provided with the strengthening rib, the strengthening rib is used for connecting landing leg and upper beam.
2. The steel-concrete composite truss girder positioning and adjusting device according to claim 1, further comprising a lower connecting plate, wherein the supporting leg and the upper cross beam are connected through the lower connecting plate, and the reinforcing rib is arranged between the lower connecting plate and the supporting leg.
3. The steel-concrete composite truss girder positioning and adjusting device according to claim 1, further comprising a horizontal support, wherein adjacent lower connecting rods are connected through the horizontal support, and two ends of the horizontal support are detachably connected with the lower connecting rods respectively.
4. The steel-concrete composite truss girder positioning and adjusting device according to claim 2, wherein the supporting leg comprises a first sub-leg and a second sub-leg, the first sub-leg and the second sub-leg are of a V-shaped structure, one ends of the first sub-leg and the second sub-leg, which are close to the bottom plate, are mutually connected, and the other ends of the first sub-leg and the second sub-leg are arranged in an opening mode and are respectively connected with the lower connecting plate.
5. The steel-concrete composite truss girder positioning adjustment device of claim 4, wherein a supporting leg is arranged between the first sub-leg and the second sub-leg.
6. The steel and concrete composite truss girder positioning adjustment device according to claim 1, further comprising an upper connection plate fixedly installed at a side of the upper beam away from the supporting leg.
7. The steel and concrete composite truss girder positioning adjustment device of claim 6, further comprising a horizontal brace fixedly arranged on the upper connecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320603369.6U CN219386034U (en) | 2023-03-24 | 2023-03-24 | Steel-concrete combined truss girder positioning and adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320603369.6U CN219386034U (en) | 2023-03-24 | 2023-03-24 | Steel-concrete combined truss girder positioning and adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219386034U true CN219386034U (en) | 2023-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320603369.6U Active CN219386034U (en) | 2023-03-24 | 2023-03-24 | Steel-concrete combined truss girder positioning and adjusting device |
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| Country | Link |
|---|---|
| CN (1) | CN219386034U (en) |
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- 2023-03-24 CN CN202320603369.6U patent/CN219386034U/en active Active
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