CN211922288U - Grouting sleeve connection assembly type reinforced concrete central anti-collision guardrail - Google Patents
Grouting sleeve connection assembly type reinforced concrete central anti-collision guardrail Download PDFInfo
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- CN211922288U CN211922288U CN202020380898.0U CN202020380898U CN211922288U CN 211922288 U CN211922288 U CN 211922288U CN 202020380898 U CN202020380898 U CN 202020380898U CN 211922288 U CN211922288 U CN 211922288U
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Abstract
The utility model discloses a grouting sleeve connection assembly type reinforced concrete central anti-collision guardrail, which comprises a connecting steel bar, a guardrail main body, a corrugated pipe and an embedded block prefabricated on a girder bridge deck plate, wherein the bottom of the guardrail main body is provided with an embedded groove matched with the embedded block, and the embedded block is embedded into the embedded groove; the two sides of the guardrail main body are provided with mutually symmetrical anti-collision surfaces, the corrugated pipe is arranged in the middle of the guardrail main body and is communicated with the lower end and the upper end of the guardrail main body, and the corrugated pipe is positioned right above the embedded groove; the connecting reinforcement includes extension section and pre-buried section in the girder decking, extension section and embedded section integrated into one piece, just the upper end of extension section stretches into in the bellows after passing girder decking and embedded piece in proper order, the bellows intussuseption is full of the grout material. The utility model discloses a connected mode is firm reliable, and stability is high, and difficult emergence is toppled.
Description
Technical Field
The utility model relates to a guardrail technique, concretely relates to grout muffjoint assembled reinforced concrete central authorities anticollision barrier.
Background
Set up anti-collision guardrail be the most effectual safeguard measure of driving safety on guaranteeing the bridge, meanwhile, anti-collision guardrail is the important component part of bridge, traditional reinforced concrete guardrail often adopts on-the-spot reinforcement, the cast-in-place construction of concrete, a large amount of reinforcing bar transportation, the processing operation is wasted time and energy, construction period and cost have been increased, and construction quality is difficult to control, easily cause guardrail steel bar protective layer thickness to satisfy standard requirement, thereby lead to concrete surface fracture, the decoration risk of inside reinforcing bar increases, seriously influenced the durability of guardrail, and the cast-in-place causes the pollution great, be not conform to the requirement of the development of national green building.
Adopt the cast-in-place anticollision barrier of solution that prefabricated assembled central authorities anticollision barrier can be fine to the drawback that brings for the bridge construction. The core problem with fabricated structures is represented by poor integrity. When the assembled central anti-collision guardrail is installed, the guardrail and the bridge floor are required to be connected in a proper connection mode, the connection strength is ensured, meanwhile, enough anti-overturning capacity is required to be provided, namely, the connection part is required to provide enough strength and rigidity when a vehicle collides with the guardrail, and the assembled central anti-collision guardrail can be conveniently and quickly installed by workers during construction.
The vertical connection form of the current assembled central anti-collision guardrail mainly comprises an embedded foundation (safety analysis of concrete guardrails of central separation belts of embedded foundation of bridge & zhang men taimen & gt, urban road bridge & flood control, 2018). The guard bar is embedded and fixed between the flange plates, and two sides of the bottom are embedded and fixed through the bridge flange plates. The embedded guardrail has poor connection strength in practical application, is easy to overturn integrally under the impact load of a vehicle, and is not suitable for an integral main beam.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the deficiencies of the prior art, providing a grout muffjoint assembled reinforced concrete central authorities anticollision barrier. The grouting sleeve connecting assembly type reinforced concrete central anti-collision guardrail is reliable in connection and high in stability.
The purpose of the utility model is realized through the following technical scheme: the grouting sleeve connection assembly type reinforced concrete central anti-collision guardrail comprises connecting steel bars, a guardrail main body, a corrugated pipe and an embedded block prefabricated on a main beam bridge deck, wherein an embedded groove matched with the embedded block is formed in the bottom of the guardrail main body, and the embedded block is embedded into the embedded groove; the two sides of the guardrail main body are provided with mutually symmetrical anti-collision surfaces, the corrugated pipe is arranged in the middle of the guardrail main body and is communicated with the lower end and the upper end of the guardrail main body, and the corrugated pipe is positioned right above the embedded groove; the connecting reinforcement includes extension section and pre-buried section in the girder decking, extension section and embedded section integrated into one piece, just the upper end of extension section stretches into in the bellows after passing girder decking and embedded piece in proper order, the bellows intussuseption is full of the grout material.
Preferably, the corrugated pipes are multiple and are uniformly distributed along the axial direction of the embedded groove; the number of the connecting steel bars is equal to the number of the corrugated pipes, and the extension section of each connecting steel bar is inserted into the corresponding corrugated pipe after the anti-collision guardrail precast block is hoisted.
Preferably, the embedded section is bent at an angle with respect to the extension section.
Preferably, an epoxy resin adhesive layer is arranged between the guardrail main body and the main beam bridge deck.
Preferably, the height of the upper end of the extension section extending out of the main beam bridge deck is 600 mm-1000 mm.
Preferably, the depth of the embedded section embedded into the bridge deck of the main beam is 60 mm-150 mm, and the length of the embedded section is 200 mm-400 mm.
Preferably, the section of the embedded block is rectangular or square.
The utility model discloses for prior art have following advantage:
1. the grouting sleeve connection assembly type reinforced concrete central anti-collision guardrail mainly comprises connecting steel bars, a guardrail main body, corrugated pipes and an embedding block (embedding system), wherein the guardrail main body adopts a symmetrical structure (namely, the left side and the right side are both collision-facing surfaces and can bear vehicle impact load from a left main beam and a right main beam), an embedding groove matched with the embedding block is arranged at the bottom of the guardrail main body, the guardrail main body and a bridge deck of the main beams adopt embedded connection between the embedding block and the embedding groove, and reinforced connection between the connecting steel bars and the corrugated pipes is also used between the guardrail main body and the bridge deck of the main beams, so that the connection mode between the guardrail main body and the bridge deck of the main beams is firm and reliable, the embedded connection and the reinforced connection are effectively combined, so that the guardrail main body and the bridge deck of the main beams form a whole body, and the stability of the guardrail main body is of the symmetrical structure is, the whole overturn is not easy to happen.
2. The grouting sleeve connected assembled reinforced concrete central anti-collision guardrail is hoisted and butted with connecting steel bars through the corrugated pipe during construction, and the butting precision can be controlled by changing the diameter of the corrugated pipe sleeve, so that the butting precision is convenient to control; and directly pour into grouting material into the bellows after the hoist and mount is accomplished, this construction is convenient, and the degree of assemblization is high.
3. This grout muffjoint assembled reinforced concrete central authorities anticollision barrier adopts connecting reinforcement, bellows and grout material etc. to strengthen the connection, and not only the construction is convenient, and used engineering material is simple cheap, has reduced construction cost.
4. The embedding groove of the grouting sleeve connection assembly type reinforced concrete central anti-collision guardrail is filled with epoxy resin glue, so that the connection strength between the guardrail precast block and the girder can be ensured, and the construction error of an embedding system generated during prefabrication can be effectively compensated.
Drawings
Fig. 1 is a schematic structural view of the grouting sleeve connection assembly type reinforced concrete central anti-collision guardrail of the utility model.
Fig. 2 is the utility model discloses a grout muffjoint assembled reinforced concrete central authorities anticollision barrier's prefabricated construction structure sketch map.
Fig. 3 is a schematic structural view of the guardrail main body of the present invention.
Fig. 4 is a front view of the assembled reinforced concrete central crash barrier connected by the grouting sleeve of the present invention.
Wherein, 1 is the guardrail main part, 2 is the joint reinforcement, 3 is the bellows, 4 are the consolidation block, 5 are the consolidation groove, 6 are crashproof face, 7 are the extension, 8 are the section of burying, 9 are the grout material, 10 are girder decking, 11 are the epoxy glue film.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
The grouting sleeve connection assembly type reinforced concrete central anti-collision guardrail shown in figures 1 to 3 comprises connecting steel bars, a guardrail main body, a corrugated pipe and an embedded block prefabricated on a main beam bridge deck, wherein an embedded groove matched with the embedded block is formed in the bottom of the guardrail main body, and the embedded block is embedded into the embedded groove; the two sides of the guardrail main body are provided with mutually symmetrical anti-collision surfaces, the corrugated pipe is arranged in the middle of the guardrail main body and is communicated with the lower end and the upper end of the guardrail main body, and the corrugated pipe is positioned right above the embedded groove; the connecting reinforcement includes extension section and pre-buried section in the girder decking, extension section and embedded section integrated into one piece, just the upper end of extension section stretches into in the bellows after passing girder decking and embedded piece in proper order, the bellows intussuseption is full of the grout material.
Specifically, in this embodiment, the guardrail body adopts a length of a standard section, and the length is 6 m. The guardrail main part mainly comprises concrete, bending resistance reinforcing bar and constructional steel bar, and the concrete forms the shape structure of guardrail main part promptly, and vertical reinforcing bar and bending resistance reinforcing bar set up in the concrete in order to improve intensity (form the framework of steel reinforcement of assembled anticollision barrier prefabricated section to bear external load when the concrete fracture). The bellows communicates the upper end and the lower extreme of guardrail main part, then when hoist and mount guardrail main part, docks easily between bellows and the connecting reinforcement, and can pour into grout material into the bellows fast after the hoist and mount is accomplished to accomplish and strengthen being connected between crashproof guardrail prefabricated section and the girder. The corrugated pipe is arranged right above the embedding groove, namely the axis of the corrugated pipe and the middle surface of the embedding groove are positioned on the same vertical surface. Meanwhile, the guardrail main body in the embodiment is of a symmetrical structure, the guardrail main body is composed of an anti-collision part with an isosceles trapezoid cross section, a transition part with an isosceles trapezoid cross section and a bottom with a rectangular cross section from top to bottom, the guardrail main body formed by the anti-collision part, the transition part and the bottom is bilaterally symmetrical, and the corrugated pipe and the embedding groove are both positioned on the middle line of the guardrail main body, so that the corrugated pipe, the connecting reinforcing steel bars, the grouting material and the like form a strengthened connection mode, and the embedding connection mode formed by the embedding groove and the embedding block and the corrugated pipe, the connecting reinforcing steel bars, the grouting material and the like form strengthened connection which can be effectively combined, the integral stability of the guardrail is ensured, and the overturning is not easy to occur. In order to further improve the anti-pulling performance and the anti-overturning strength, the ribbed steel bars with the diameter of more than 16mm are adopted as the connecting steel bars. The mechanical meshing action of the threads on the ribbed steel bars and the concrete has the anti-pulling performance, and the anti-overturning strength and the connection strength are increased to a certain extent.
As shown in fig. 4, the corrugated pipes are multiple, and the multiple corrugated pipes are uniformly distributed along the axial direction of the caulking groove; the number of the connecting reinforcing steel bars is equal to the number of the corrugated pipes, and the extension section of each connecting reinforcing steel bar is inserted into the corresponding corrugated pipe. The diameter of the corrugated pipe and the connecting steel bars can be adjusted according to the anticollision grade of the guardrail and the construction precision requirement. In the embodiment, the distance between the axes of 2 adjacent corrugated pipes is 700mm, the plurality of corrugated pipes are uniformly arranged along the length direction of the guardrail main body, and each corrugated pipe is internally inserted by the extension section in the corresponding connecting steel bar. The number of the corrugated pipes can be determined according to the length of the guardrail main body, the installation environment, the anti-collision grade of the load guardrail and other factors, so that the connection strength between the guardrail main body and the main beam bridge deck is further improved.
The embedded section is bent at a certain angle relative to the extending section. Specifically, the extension section is perpendicular to the main beam deck slab, and the embedded section can further strengthen the connection strength between the guardrail main body and the main beam deck slab when bending relative to the extension section, so as to better bear the impact load brought by vehicle impact. In this embodiment, the angle between the embedded section and the extending section is 90 °, that is, the embedded section is horizontally disposed.
An epoxy resin adhesive layer is arranged between the guardrail main body and the main beam bridge deck. The epoxy layer can further improve the joint strength between guardrail main part and the girder decking, has improved holistic stability to reduce the risk that takes place to topple, and compensate the error that the construction brought when prefabricating, guarantee the normal butt joint of consolidation system.
The height of the upper end of the extension section extending out of the main beam bridge deck is 600 mm-1000 mm. The height that the girder decking was stretched out to the upper end of extension in this embodiment is 800mm, and this adopts the extension of appropriate length, has guaranteed joint strength, still saves reinforcing bar material to the at utmost when guaranteeing joint strength.
The depth of the embedded section embedded into the bridge deck slab of the main beam is 60 mm-150 mm, and the length of the embedded section is 200 mm-400 mm. In this embodiment, the degree of depth that the embedded section was buried in the girder decking is 100mm, and the length of embedded section is 300mm, and this suitable degree of depth and length have certain resistance to plucking performance, and guaranteed joint strength, have still saved reinforcing bar material, also convenient construction simultaneously.
The section of the embedded block is rectangular or square. The cross-section of the embedded block is square, so that the stress performance of the guardrail main body when the guardrail main body is collided is improved, the horizontal impact force caused when a vehicle collides the guardrail is effectively borne, and the guardrail main body is further ensured to be not prone to overturning.
The above-mentioned specific implementation is the preferred embodiment of the present invention, can not be right the utility model discloses the limit, any other does not deviate from the technical scheme of the utility model and the change or other equivalent replacement modes of doing all contain within the scope of protection of the utility model.
Claims (7)
1. Grout muffjoint assembled reinforced concrete central authorities anticollision barrier, its characterized in that: the corrugated pipe type bridge floor comprises connecting steel bars, a guardrail main body, corrugated pipes and embedded blocks prefabricated on a main beam bridge deck, wherein embedded grooves matched with the embedded blocks are formed in the bottom of the guardrail main body, and the embedded blocks are embedded into the embedded grooves; the two sides of the guardrail main body are provided with mutually symmetrical anti-collision surfaces, the corrugated pipe is arranged in the middle of the guardrail main body and is communicated with the lower end and the upper end of the guardrail main body, and the corrugated pipe is positioned right above the embedded groove; the connecting reinforcement includes extension section and pre-buried section in the girder decking, extension section and embedded section integrated into one piece, just the upper end of extension section stretches into in the bellows after passing girder decking and embedded piece in proper order, the bellows intussuseption is full of the grout material.
2. The grout muff-coupling assembled reinforced concrete center crash barrier of claim 1, wherein: the corrugated pipes are uniformly distributed along the axial direction of the embedding groove; the number of the connecting reinforcing steel bars is equal to the number of the corrugated pipes, and the extension section of each connecting reinforcing steel bar is inserted into the corresponding corrugated pipe.
3. The grout muff-coupling assembled reinforced concrete center crash barrier of claim 1, wherein: the embedded section is bent at a certain angle relative to the extending section.
4. The grout muff-coupling assembled reinforced concrete center crash barrier of claim 1, wherein: an epoxy resin adhesive layer is arranged between the guardrail main body and the main beam bridge deck.
5. The grout muff-coupling assembled reinforced concrete center crash barrier of claim 1, wherein: the height of the upper end of the extension section extending out of the main beam bridge deck is 600 mm-1000 mm.
6. The grout muff-coupling assembled reinforced concrete center crash barrier of claim 1, wherein: the depth of the embedded section embedded into the bridge deck slab of the main beam is 60 mm-150 mm, and the length of the embedded section is 200 mm-400 mm.
7. The grout muff-coupling assembled reinforced concrete center crash barrier of claim 1, wherein: the section of the embedded block is rectangular or square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020380898.0U CN211922288U (en) | 2020-03-24 | 2020-03-24 | Grouting sleeve connection assembly type reinforced concrete central anti-collision guardrail |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020380898.0U CN211922288U (en) | 2020-03-24 | 2020-03-24 | Grouting sleeve connection assembly type reinforced concrete central anti-collision guardrail |
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| CN211922288U true CN211922288U (en) | 2020-11-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113863132A (en) * | 2021-09-26 | 2021-12-31 | 广州机施建设集团有限公司 | Fabricated anti-collision wall and construction process |
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2020
- 2020-03-24 CN CN202020380898.0U patent/CN211922288U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113863132A (en) * | 2021-09-26 | 2021-12-31 | 广州机施建设集团有限公司 | Fabricated anti-collision wall and construction process |
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