CN210368655U

CN210368655U - Prefabricated integral sliding model of prestressed highway steel truss girder bridge deck

Info

Publication number: CN210368655U
Application number: CN201920960397.7U
Authority: CN
Inventors: 陈建军; 潘传伟; 林国辉; 莫孟; 刘成; 胡勇; 张营周
Original assignee: China Railway Erju Co Ltd; Xinyun Emgineering Co Ltd of China Railway No 2 Engineering Group Co Ltd
Current assignee: China Railway Erju Co Ltd; Xinyun Emgineering Co Ltd of China Railway No 2 Engineering Group Co Ltd
Priority date: 2019-06-24
Filing date: 2019-06-24
Publication date: 2020-04-21
Anticipated expiration: 2029-06-24

Abstract

The utility model discloses a prefabricated whole model of sliding of prestressing force highway steel truss girder decking, including prefabricated pedestal to and install the decking template on prefabricated pedestal, the decking template includes die block, side form and end mould, and die block and side form pass through the welding and form whole template, are equipped with glide machanism between decking template and the prefabricated pedestal, and glide machanism makes the decking template can take place to remove for prefabricated pedestal, and glide machanism department is equipped with stop gear, and stop gear makes the decking template along decking longitudinal movement, and the decking template still is connected with canceling release mechanical system. The utility model forms the whole template by welding the bottom die and the side die, thereby avoiding the template deformation caused by repeated assembling and disassembling installation of the template, improving the product quality and reducing the use frequency of hoisting equipment; the sliding mechanism and the limiting mechanism are arranged, so that the displacement generated in the releasing and stretching process of the bridge deck can be met, the product quality is improved, the template can be quickly reset by the resetting mechanism, and the working efficiency is improved.

Description

Prefabricated integral sliding model of prestressed highway steel truss girder bridge deck

Technical Field

The utility model relates to a bridge engineering technical field, especially a prefabricated whole model of sliding of prestressing force highway steel longeron bridge deck slab.

Background

The traditional highway bridge deck model generally adopts a sectional assembly mode, namely a bottom die and prefabricated platform embedded section steel are welded and then fixed, and in the production process, a side die and an end die are installed in a sectional assembly mode, and are dismantled section by section after concrete reaches strength.

The construction mode of sectional assembly mainly has the following defects:

1. the prefabricated pedestal is formed by welding and fixing the bottom die and the prefabricated platform embedded section steel, and the edges and corners of the bridge deck are more in size, so that the edges and corners of the bridge deck are easily extruded by pre-tensioning prestress in the process of releasing and tensioning by adopting a pre-tensioning construction process, so that the quality defects of corner missing, block falling and the like of a bridge deck product are caused, and the requirement of quality control is not met;

2. the side molds and the end molds are constructed in a section-by-section assembling mode, and the templates are easily deformed due to repeated use of the templates in the production process, so that the installation quality of the templates is not easy to control, and the requirement of quality control of the bridge deck is not met; the time for installing the template is long, the period for occupying a bridge deck production pedestal is long, the time for occupying hoisting equipment is long, equipment waste is caused, and the improvement of the flow process work efficiency is not facilitated; and the required workers are more, the labor intensity is higher, more cross operations exist, and the work efficiency and the installation quality control are not improved.

SUMMERY OF THE UTILITY MODEL

The invention of the utility model aims to: the problem that exists to prior art provides a whole model that slides of prestressing force highway steel truss girder bridge panel prefabrication.

In order to realize the purpose, the utility model discloses a technical scheme be:

the utility model provides a prefabricated whole model of sliding of prestressing force highway steel truss bridge deck board, includes prefabricated pedestal, and installs bridge deck board template on the prefabricated pedestal, bridge deck board template includes die block, side form and end mould, die block and side form pass through the welding and form whole template, bridge deck board template with be equipped with glide machanism between the prefabricated pedestal, glide machanism makes bridge deck board template can for prefabricated pedestal takes place to remove, glide machanism department is equipped with stop gear, stop gear makes bridge deck board template is along bridge deck board longitudinal movement, bridge deck board template still is connected with canceling release mechanical system.

The utility model is provided with a sliding mechanism and a limiting mechanism, and the bridge deck template can move longitudinally along the bridge deck in the releasing and opening process, thereby satisfying the displacement generated in the releasing and opening process of the bridge deck, avoiding the quality defects of concrete corner damage and the like caused by the constraint of the template, and improving the product quality; the reset mechanism can reset the whole bridge deck template, and the next production of the bridge deck is carried out, so that the bridge deck template can be repeatedly used, the resource waste is reduced, and the environment protection is facilitated.

Further, the utility model discloses pass through the welding with die block and side form and form the solid template, no longer dismantle in the use, can avoid the template to piece repeatedly and tear the template deformation that the installation caused open, improve the quality of product, simultaneously, can reduce lifting device's frequency of use, reach the demand of practicing thrift construction cost of enterprise and can accelerate construction flowing water beat simultaneously, improve the work efficiency.

As the utility model discloses an optimal scheme, glide machanism includes die block slide, side form slide and end mould slide, and die block, side form and end mould take place to slide for the slide respectively.

As the utility model discloses a preferred scheme, the die block slide is including setting up pre-buried shaped steel on the prefabricated pedestal, pre-buried shaped steel vertically sets up along the decking, usually the quantity of pre-buried shaped steel is two, sets up the both sides at the vertical central line of pre-buried pedestal respectively.

As the utility model discloses an optimal scheme, stop gear is including setting up respectively the limit stop of pre-buried shaped steel both sides, limit stop also can directly be pre-buried on the prefabricated pedestal, limit stop's height is higher than slightly pre-buried shaped steel.

As the utility model discloses an optimal scheme, the side form slide is including setting up the first steel pipe on the side form support, the end mould slide is including setting up the second steel pipe on the end mould support.

As the utility model discloses an optimal scheme, the lower part of first steel pipe and second steel pipe all is connected with a plurality of adjustment top and holds in the palm, every the height-adjustable who holds in the palm in the adjustment top for the fine setting of elevation.

As the utility model discloses an optimal scheme, the side form is equipped with the draft, the size of draft is 1/50 ~ 1/30, can effectively reduce the frictional resistance that the decking caused to the template, realizes the mesh of decking integral hoisting, the drawing of patterns of the decking of being convenient for simultaneously.

As the utility model discloses an optimal scheme, side form support and end mould support all include a plurality of montant and connect all the horizontal pole of montant, the both sides of side form support still are equipped with the diagonal brace, can also set up the down tube between horizontal pole and montant to ensure the rigidity and the stability of support, thereby ensure the stability of whole model.

As the utility model discloses an optimal scheme, canceling release mechanical system includes hoist engine and wire rope, only needs the dilatory decking template can accomplish and resets, need not to use lifting device, has that equipment is simple, with low costs, convenient operation's advantage. Preferably, the resetting structure is installed on the prefabricated pedestal, and anchoring points are embedded in the prefabricated pedestal.

As the preferred scheme of the utility model, the end mould with the detachable connection of whole template is usually connected through the bolt.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model is provided with a sliding mechanism and a limiting mechanism, and the bridge deck template can move longitudinally along the bridge deck in the releasing and opening process, thereby satisfying the displacement generated in the releasing and opening process of the bridge deck, avoiding the quality defects of concrete corner damage and the like caused by the constraint of the template, and improving the product quality; the reset mechanism can reset the whole bridge deck template, and the next production of the bridge deck is carried out, so that the bridge deck template can be repeatedly used, the resource waste is reduced, and the environment protection is facilitated.

2. The utility model discloses pass through the welding with die block and side form and form the whole template, no longer dismantle in the use, can avoid the template to piece repeatedly and tear the template deformation that the installation caused open, improve the quality of product, simultaneously, can reduce lifting device's frequency of use, reach the demand of practicing thrift construction cost of enterprise and can accelerate construction flowing water beat simultaneously, improve the work efficiency.

3. The upper opening and the lower opening of the side mold are provided with the draft angles, so that the friction resistance of the bridge deck to the template can be effectively reduced, the integral hoisting purpose of the bridge deck is realized, the demoulding of the bridge deck is facilitated, and the product quality is improved.

Drawings

FIG. 1 is a structural schematic diagram of a prefabricated integral sliding model of a prestressed highway steel truss girder bridge deck.

Fig. 2 is a schematic structural diagram of the prefabricated pedestal according to the present invention.

Fig. 3 is a side view of fig. 2.

Fig. 4 is a schematic structural view of the side mold bracket of the present invention.

Fig. 5 is a side view of fig. 4.

Fig. 6 is a schematic structural view of the end mold bracket according to the present invention.

The labels in the figure are: 1-prefabricating a pedestal, 11-embedded steel, 12-limit stop, 2-bridge deck slab, 21-bottom die, 22-side die, 3-winch, 4-steel wire rope, 5-side die support, 51-first vertical rod, 52-first cross rod, 53-diagonal support rod, 54-first adjusting top support, 55-first steel pipe, 6-end die support, 61-second vertical rod, 62-second cross rod, 63-second adjusting top support and 64-second steel pipe.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example 1

As shown in figure 1, the prefabricated whole model that slides of prestressing force highway steel truss bridge deck board, including prefabricated pedestal 1, and install bridge deck board template 2 on the prefabricated pedestal 1, bridge deck board template 2 includes die block 21, side form 22 and end mould (not drawn in the figure), side form 22 is equipped with the draft, the size of draft is 1/50 ~ 1/30. Die block 21 and side form 22 form whole template through the welding, the end mould with whole template detachable connection.

Decking template 2 with be equipped with glide machanism between the prefabricated pedestal 1, glide machanism includes die block slide, side form slide and end mould slide, glide machanism makes decking template 2 can for prefabricated pedestal 1 takes place to remove, glide machanism department is equipped with stop gear, stop gear makes decking template 2 is along decking longitudinal movement.

As shown in fig. 2-3, prefabricating pedestal 1 is the concrete pedestal, the die block slide is including setting up pre-buried shaped steel 11 on prefabricating pedestal 1, pre-buried shaped steel 11 vertically sets up along the decking, puts when opening the operation, die block 21 slides along pre-buried shaped steel 11. And the limit stops 12 are arranged on two sides of the embedded steel 11, the limit stops 12 limit the sliding direction of the bottom die 21, and the limit stops 12 are the limit mechanism.

As shown in fig. 4-5, two sides of the side mold 22 are provided with side mold supports 5, each side mold support 5 includes a plurality of first vertical rods 51 and a first cross rod 52 connecting the first vertical rods 51, and two sides of the side mold support 5 are further provided with oblique stay bars 53. First adjustment top support 54 is installed at the top of first montant 51, every first adjustment top support 54's height-adjustable first adjustment top support 54 go up welded fastening has first steel pipe 55, first steel pipe 55 uses as the side form slide, when putting an operation, side form 22 along first steel pipe 55 slides.

As shown in fig. 6, both sides of end mould all are equipped with end mould support 6, end mould support 6 includes a plurality of second montant 61 and connects all the second horizontal pole 62 of second montant 61 second adjustment top support 63, every are installed at the top of second montant 62 the height-adjustable that second adjustment top supported be welded fastening has second steel pipe 64 on the second adjustment top support 63, second steel pipe 64 uses as the end mould slide, when putting the operation, the end mould along second steel pipe 64 slides.

The bridge deck slab is characterized by further comprising a resetting mechanism connected with the bridge deck slab template 2, wherein the resetting mechanism comprises a winch 3 and a steel wire rope 4, and preferably, the winch 3 is fixed on the prefabricating pedestal 1.

Bridge deck plate 2 adopt batch production preparation, transport to the scene and assemble, at first install die block 21 on prefabricated pedestal 1, weld into whole template with side form 22 and die block 21 again, assemble the end mould on whole template at last to set up the prestressing force preformed hole on the end mould.

The bridge deck prefabricating construction process comprises the following steps: hoisting a reinforcement cage (a pipeline is reserved for installation and post-tensioning); installing a bridge deck formwork 2; tensioning the pretensioned steel strand; pouring and maintaining concrete; performing prestress relaxation; demolding; the bridge deck formwork 2 is reset.

The bridge deck is prefabricated by adopting a long-line method, prestress tensioning construction is carried out by applying prestress to the anchoring cross beams arranged at the two ends of the long-line pedestal, the tensioning cross beams and the tensioning jacks arranged between the anchoring cross beams, and then the steel strands are anchored on the anchoring cross beams by the locking nuts, so that the aim of pre-stressing is fulfilled.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a prefabricated whole model of sliding of prestressing force highway steel longeron decking, includes the prefabricated pedestal, and installs decking template on the prefabricated pedestal, decking template includes die block, side form and end mould, its characterized in that: die block and side form whole template through the welding, the decking template with be equipped with glide machanism between the prefabricated pedestal, glide machanism makes the decking template can for the prefabricated pedestal takes place to remove, glide machanism department is equipped with stop gear, stop gear makes the decking template is along decking longitudinal movement, the decking template still is connected with canceling release mechanical system.

2. The prefabricated integral sliding model of the prestressed highway steel truss bridge deck according to claim 1, wherein the sliding mechanism comprises a bottom die slideway, a side die slideway and an end die slideway.

3. The prefabricated integral sliding model of the prestressed highway steel truss girder bridge deck as claimed in claim 2, wherein the bottom die slideway comprises embedded section steel arranged on the prefabricated pedestal, and the embedded section steel is arranged along the longitudinal direction of the bridge deck.

4. The pre-fabricated integral sliding model of the prestressed highway steel truss girder bridge deck according to claim 3, wherein the limiting mechanism comprises limiting stoppers respectively arranged at two sides of the embedded steel.

5. The prefabricated integral sliding model of the prestressed highway steel truss bridge deck as claimed in claim 2, wherein the side mould slideways comprise first steel pipes arranged on the side mould supports, and the end mould slideways comprise second steel pipes arranged on the end mould supports.

6. The pre-fabricated integral sliding model of a prestressed highway steel truss girder bridge deck according to claim 5, wherein the lower parts of the first steel pipe and the second steel pipe are respectively connected with a plurality of adjusting jacking supports, and the height of each adjusting jacking support is adjustable.

7. The pre-fabricated integral sliding model of the prestressed highway steel truss bridge deck according to any one of claims 1-6, wherein the side molds are provided with draft angles, and the draft angles are 1/50-1/30.

8. The pre-fabricated integral sliding model of prestressed steel truss girder bridge deck slab of highway according to any one of claims 5-6, wherein each of said side-form and end-form supports comprises a plurality of vertical rods and cross rods connecting all of said vertical rods, and said side-form support is further provided with diagonal braces at both sides thereof.

9. The prefabricated integral sliding model of the prestressed highway steel truss bridge deck as claimed in any one of claims 1-6, wherein said restoring mechanism comprises a winch and a wire rope, and said restoring mechanism is mounted on said prefabricated pedestal.

10. The prefabricated integral sliding model of the prestressed highway steel truss bridge deck according to any one of claims 1-6, wherein the end forms and the integral formworks are detachably connected.