CN211596390U - A crashproof wall is assembled in prefabrication for old bridge is changed - Google Patents
A crashproof wall is assembled in prefabrication for old bridge is changed Download PDFInfo
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- CN211596390U CN211596390U CN201921801982.9U CN201921801982U CN211596390U CN 211596390 U CN211596390 U CN 211596390U CN 201921801982 U CN201921801982 U CN 201921801982U CN 211596390 U CN211596390 U CN 211596390U
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Abstract
The utility model provides a crashproof wall is assembled in prefabrication for old bridge is changed. This anticollision wall is assembled in prefabrication includes prefabricated concrete anticollision wall main part and steel railing, and concrete anticollision wall main part becomes the shaping when the preparation and goes out lifting hole and a plurality of crashproof face sand grip. Precast steel plates and anchor bars are embedded in the top of the concrete anti-collision wall main body, and reserved overhanging steel bars are embedded in the bottom of the concrete anti-collision wall main body. The bottom of the steel railing is welded with the top of the prefabricated steel plate. The utility model discloses a crashproof wall is assembled in prefabrication in the mill, but the scale production, component quality and outward appearance molding homoenergetic obtain better control. The hoisting holes are convenient to hoist and transport, and the anti-collision surface convex strips can achieve a good visual effect. The steel railing and the prefabricated assembled anti-collision wall are connected into a whole, so that the beautifying effect is further increased. The utility model discloses a prefabricated crashproof wall of assembling appearance is pleasing to the eye, simple structure, safe and reliable, makes things convenient for the dismouting to change, and the construction is convenient, and construction period is short, and the work progress is little to the influence of traffic, and economic benefits is good.
Description
Technical Field
The utility model belongs to the technical field of bridge design construction, especially, relate to a prefabricated crashproof wall of assembling for old bridge is changed.
Background
With the construction of a large number of interchange bridges and viaducts in cities, the bridges become a landscape line of urban landscapes. People not only require the bridge to have safe and quick functions, but also put higher requirements on the aesthetics of the bridge. The anti-collision wall is used as important safety protection facilities on two sides of the bridge, can play a role in buffering, reduce collision damage of vehicles, reduce harm and influence generated after the vehicles are subjected to accidents, and is also an important reason for influencing the appearance quality of the bridge. The early-built bridge anti-collision wall is long-term, and the current ubiquitous problems that the current traffic safety facility standard is not met, the appearance modeling is poor, part of the bridge anti-collision wall is damaged and the like seriously influence the use and the aesthetic feeling of the bridge anti-collision wall. Especially, the peripheral landscape requirement of the bridge in the urban core area is very high, the appearance effect of the old anti-collision wall is poor, the anti-collision wall is not coordinated with the peripheral landscape, and the anti-collision wall of the old bridge needs to be replaced and optimized.
In addition, in modern city construction, the speed and quality of the project directly affect the operation and development of modern cities. The prefabrication and assembly technology has the advantages of high construction speed, easy guarantee of component quality, low requirement on construction sites and the like. The anti-collision wall adopts a prefabricated and assembled construction method, so that the construction period of replacing the anti-collision wall of the existing bridge can be shortened, the adverse effect of the construction process on traffic is reduced, and the manufacturing quality and the appearance shape of the anti-collision wall prefabricated in a factory can be well controlled.
Therefore, need urgently need utility model a have and can prefabricate the assembly, simple to operate, the novel bridge anticollision wall structure that outward appearance effect and economic benefits are good.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a prefabricated crashproof wall of assembling for old bridge is changed is provided, aims at solving the unsatisfied existing traffic safety facility standard of old bridge crashproof wall among the prior art, and the outward appearance is modelled poorly, and partial bridge crashproof wall is damaged, but is not convenient for pour the problem of crashproof wall concrete in situ.
The utility model discloses a realized like this, a prefabricated crashproof wall of assembling for old bridge is changed, it includes prefabricated concrete crashproof wall main part and steel railing, concrete crashproof wall main part becomes the shaping when making and goes out lifting hole and a plurality of crashproof face sand grips that interval distributes, a plurality of crashproof face sand grips are located the face of meeting a bus of concrete crashproof wall main part; the top of the concrete anti-collision wall main body is embedded with a prefabricated steel plate and an anchor bar during manufacturing, wherein the bottom of the prefabricated steel plate is welded with the top of the anchor bar, and the top of the prefabricated steel plate is exposed out of the top surface of the concrete anti-collision wall main body; the bottom of the concrete anti-collision wall main body is embedded with reserved overhanging steel bars firstly during manufacturing, one end of each reserved overhanging steel bar is embedded in the concrete anti-collision wall main body, and the other end of each reserved overhanging steel bar extends out of the vehicle-facing surface of the concrete anti-collision wall main body; and the bottom of the steel rail is welded with the top of the prefabricated steel plate.
Further, the steel railing includes horizontal pole and montant, the length direction of horizontal pole is followed the length direction of prefabricated concrete anticollision wall main part extends, the top of montant with the horizontal pole welding, the bottom of montant with the prefabricated steel sheet welding.
Furthermore, the hoisting hole is arranged in the middle of the prefabricated concrete anti-collision wall main body.
Further, the diameter of the hoisting hole is 50 mm.
Further, the cross section of anticollision face sand grip is trapezoidal, the height of anticollision face sand grip is 30 mm.
Compared with the prior art, the utility model, following beneficial effect has at least:
1. the prefabricated assembled anti-collision wall is prefabricated in a factory, large-scale production can be realized, and the quality and the appearance of components can be well controlled.
2. The prefabricated anticollision wall of assembling is equipped with the hole for hoist in advance, makes things convenient for the prefabricated hoist and mount and the transportation of assembling the anticollision wall.
3. The prefabricated anticollision wall of assembling is equipped with crashproof face sand grip in advance, can play the function of beautifying, promotes the anticollision wall quality.
4. The steel railing and the prefabricated assembled anti-collision wall are connected into a whole, so that the beautifying effect is further increased.
5. The prefabricated overhanging reinforcing bar of reserving of assembling anticollision wall bottom establishes the reinforcing bar and the layer reinforcing bar overlap joint of mating formation of former bridge through adding fixedly, and when the anticollision wall received the vehicle striking, the vehicle front wheel pressed on the prefabricated overhanging reinforcing bar of reserving of assembling anticollision wall bottom, can play the effect of self-balancing, prevents that the anticollision wall from toppling.
6. The prefabricated assembled anti-collision wall is simple in structure, convenient and fast to construct, short in construction period, small in influence of the construction process on traffic and good in economic benefit.
Drawings
Fig. 1 is a schematic structural view of a prefabricated assembled anti-collision wall for replacing an old bridge according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of a portion of the vehicle-facing side of the prefabricated crash wall assembly of FIG. 1;
FIG. 3 is a cross-sectional view of the concrete impact wall body of the prefabricated, assembled impact wall of FIG. 1;
fig. 4 is a schematic structural diagram of the prefabricated assembled anti-collision wall and the beam body assembled and connected in the embodiment.
In the figure: 100-beam body structure; 1-a concrete anti-collision wall main body; 2-a steel railing; 21-a cross bar; 22-a vertical rod; 3-hoisting holes; 4-bump surface convex strips; 5, prefabricating a steel plate; 6-anchor bars; 7-reserving overhanging reinforcing steel bars; 8-an original bridge pavement layer; 9-reinforcing steel bars of the original bridge pavement layer; 10-additionally arranging steel bars; 111-a first part of epoxy fine stone concrete; 112-a second part of epoxy fine stone concrete; 113-a third part of epoxy fine stone concrete; 12-mortar cushion layer; 13-reinforcing steel bars; 14-asphalt waterproof layer and asphalt concrete pavement layer.
Detailed Description
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 merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not 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; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 and 2, a preferred embodiment of the present invention provides a prefabricated assembled crash wall for replacing an old bridge, which includes a prefabricated concrete crash wall body 1 and a steel rail 2.
The concrete anti-collision wall main body 1 is formed with a hoisting hole 3 and a plurality of anti-collision surface convex strips 4 distributed at intervals during manufacturing. Referring to fig. 3, in the present embodiment, the cross section of the bump surface protrusion 4 is trapezoidal, and the height of the bump surface protrusion 4 is 30 mm. Many interval distribution's crashproof face sand grip 4 all is located the face of meeting the car of concrete anticollision wall main part 1, and crashproof face sand grip 4 can play certain increase aesthetic feeling, the effect of promotion quality.
The bottom of concrete anticollision wall main part 1 buries earlier when the preparation and reserves overhanging reinforcing bar 7, in this embodiment, reserves overhanging reinforcing bar 7 and adopts the HRB400 hot rolling ribbed steel bar that the diameter is 20 mm. One end of the reserved overhanging reinforcing steel bar 7 is embedded in the concrete anti-collision wall main body 1, and the other end of the reserved overhanging reinforcing steel bar extends out of the vehicle-facing surface of the concrete anti-collision wall main body 1. The prefabricated overhanging reinforcing bar 7 of reserving of assembling anticollision wall bottom is fixed through adding and establishing reinforcing bar 10 and the 9 laps of layer reinforcing bar of former bridge formation, and when the anticollision wall received the vehicle striking, the vehicle front wheel pressed on prefabricated overhanging reinforcing bar 7 of reserving of assembling anticollision wall bottom, can play the effect of self-balancing.
The bottom of the steel rail 2 is welded to the top of the prefabricated steel plate 5, and in this embodiment, the prefabricated steel plate 5 is a galvanized steel plate with a thickness of 150 × 150 × 5 mm. The steel railing 2 and the concrete anti-collision wall main body 1 are connected into a whole, and the beautifying effect can be further increased.
The steel balustrade 2 comprises a cross bar 21 and a vertical bar 22. The length direction of horizontal pole 21 is followed the length direction of prefabricated concrete anticollision wall main part 1 extends, the top of montant 22 with horizontal pole 21 welding, the bottom of montant 22 with prefabricated steel sheet 5 welding. In this embodiment, the vertical rods 22 are made of 100 × 50 × 5mm galvanized steel plates, and the cross rods 21 are made of 5mm galvanized steel railings.
The hoisting hole 3 is arranged in the middle of the prefabricated concrete anti-collision wall main body 1. The diameter of the hoisting hole 3 is 50 mm. The prefabricated anticollision wall of assembling is equipped with hoisting hole 3 in advance, and the hoist and mount and the transportation of anticollision wall are assembled in the convenience prefabrication.
Therefore, the prefabricated assembled anti-collision wall can be prefabricated in a factory, large-scale production can be achieved, and both the component quality and the appearance shape can be well controlled.
Referring to fig. 4, the embodiment further provides a construction method of a prefabricated assembled anti-collision wall for replacing an old bridge, which includes the following specific steps:
s10, chiseling the original bridge pavement layer 8 within a range of 3m away from the old anti-collision wall, and reserving the reinforcing steel bars 9 of the original bridge pavement layer;
s20, removing the original old anti-collision wall, chiseling the surface of the beam body structure 100 to form a concave-convex surface not smaller than 6mm, and chiseling the bottom of a new prefabricated assembled anti-collision wall to a depth of 20 mm;
s30, cleaning the roughened surface of the beam body structure 100, and then coating a cement-based interface agent;
s40, after the additional steel bars 10 are welded and fixed with the original bridge pavement layer steel bars 9, pouring a first part of epoxy fine aggregate concrete 111, and embedding one end of the additional steel bars 10 into the first part of epoxy fine aggregate concrete 111; wherein, the additional steel bar 10 adopts HRB400 hot-rolled ribbed steel bar with the diameter of 20mm, the distance between the additional steel bars 10 is 200mm, the length is 2m, and the length of the epoxy fine aggregate concrete 111 embedded into the first part is 1.5 m;
s50, paving a mortar cushion layer 12 at the bottom position of the new prefabricated assembled anti-collision wall, installing the new prefabricated assembled anti-collision wall in place, and welding and fixing the reserved external extending steel bars 7 and the additional steel bars 10 of the prefabricated assembled anti-collision wall; the mortar cushion layer 12 adopts a TGM60 high-strength mortar cushion layer;
s60, pouring epoxy fine aggregate concrete 112 of the second part after the prefabricated assembled anti-collision wall is completely installed;
s70, after reinforcing steel bars 13 are paved in a two-way mode within the range of 0.5m of the bottom of the vehicle-facing surface of the prefabricated assembled anti-collision wall, the epoxy fine aggregate concrete 113 of the third part is poured; the reinforcing steel bars 13 adopt HRB400 hot-rolled ribbed steel bars with the diameter of 10mm, and the distance between the reinforcing steel bars 13 is 150 mm;
and S80, finally pouring an asphalt waterproof layer and an asphalt concrete pavement layer 14, namely finishing the construction of replacing the old anti-collision wall by the prefabricated assembled anti-collision wall.
The prefabricated assembled anti-collision wall of the embodiment is simple in structure, convenient to construct, short in construction period, small in influence of the construction process on traffic and good in economic benefit.
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 (5)
1. A prefabricated assembled anti-collision wall for replacing an old bridge is characterized by comprising a prefabricated concrete anti-collision wall main body and steel railings, wherein a hoisting hole and a plurality of anti-collision surface convex strips distributed at intervals are formed in the concrete anti-collision wall main body during manufacturing, and the plurality of anti-collision surface convex strips are positioned on the vehicle-facing surface of the concrete anti-collision wall main body; the top of the concrete anti-collision wall main body is embedded with a prefabricated steel plate and an anchor bar during manufacturing, wherein the bottom of the prefabricated steel plate is welded with the top of the anchor bar, and the top of the prefabricated steel plate is exposed out of the top surface of the concrete anti-collision wall main body; the bottom of the concrete anti-collision wall main body is embedded with reserved overhanging steel bars firstly during manufacturing, one end of each reserved overhanging steel bar is embedded in the concrete anti-collision wall main body, and the other end of each reserved overhanging steel bar extends out of the vehicle-facing surface of the concrete anti-collision wall main body; and the bottom of the steel rail is welded with the top of the prefabricated steel plate.
2. The prefabricated assembled crash wall for replacing old bridges as claimed in claim 1, wherein the steel balustrade comprises a cross bar and a vertical bar, the length direction of the cross bar extends along the length direction of the prefabricated concrete crash wall main body, the top of the vertical bar is welded with the cross bar, and the bottom of the vertical bar is welded with the prefabricated steel plate.
3. The prefabricated assembled crash wall for replacing old bridges of claim 1, wherein the hoisting holes are formed in the middle of the prefabricated concrete crash wall main body.
4. A prefabricated crash wall assembly for old bridge replacement as claimed in claim 1, wherein said lifting holes have a diameter of 50 mm.
5. The prefabricated assembled crash wall for replacing an old bridge as claimed in claim 1, wherein the cross section of the crash surface rib is trapezoidal, and the height of the crash surface rib is 30 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921801982.9U CN211596390U (en) | 2019-10-24 | 2019-10-24 | A crashproof wall is assembled in prefabrication for old bridge is changed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921801982.9U CN211596390U (en) | 2019-10-24 | 2019-10-24 | A crashproof wall is assembled in prefabrication for old bridge is changed |
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| CN211596390U true CN211596390U (en) | 2020-09-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110983964A (en) * | 2019-10-24 | 2020-04-10 | 深圳市综合交通设计研究院有限公司 | Prefabricated assembled anti-collision wall for replacing old bridge and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110983964A (en) * | 2019-10-24 | 2020-04-10 | 深圳市综合交通设计研究院有限公司 | Prefabricated assembled anti-collision wall for replacing old bridge and construction method thereof |
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Address after: Unit 1205, block C, building 1, Xinghe legend Garden Phase III, Longtang community, Minzhi street, Longhua District, Shenzhen City, Guangdong Province Patentee after: Shenzhen comprehensive transportation and municipal engineering design and Research Institute Co.,Ltd. Address before: 518000 No.9 Tianbei 4th Road, Luohu District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN TRANSPORTATION DESIGN & RESEARCH INSTITUTE Co.,Ltd. |