CN212956119U - Bridge guardrail base outsourcing structure - Google Patents

Abstract

The utility model discloses a bridge guardrail base outer-covering structure, a back pouring section is reserved at the end part of a beam body flange plate, the beam body flange plate also comprises a back pouring section reinforcing steel bar which is pre-embedded in the back pouring section and exposed, the guardrail base outer-covering structure is provided with an outer-covering part reinforcing steel bar, and the outer-covering part reinforcing steel bar is connected with the back pouring section reinforcing steel bar and is poured into a whole by a vertical mold; the guardrail base is provided with non-outer-wrapping part steel bars at the non-outer-wrapping part, and the non-outer-wrapping part steel bars are connected with the beam body flange plate steel bars; the outsourcing structure of guardrail base extends to and forms the extension in the decking, and the extension includes first vertical section, the vertical section of second and connects the smooth curve section of first vertical section and the vertical section of second, is parallel between first vertical section and the vertical section of second. The utility model can connect the guardrail or the guardrail base and the beam flange plate into a whole, thus improving the whole stability and safety of the guardrail; the construction template is convenient to manufacture, and the construction quality control of pouring and demolding of the guardrail or the guardrail base is facilitated.

Description

Bridge guardrail base outsourcing structure

Technical Field

The utility model relates to a bridge construction technical field, concretely relates to bridge guardrail base outsourcing structure.

Background

With the rapid development of traffic construction, the form of the anti-collision guardrail of the bridge is also changed day by day. The anti-collision guardrail is used as a bridge auxiliary structure, and the appearance quality of the anti-collision guardrail directly influences the driving safety and the durability of the bridge. In the past, most of bridge guardrails are in a traditional support type, namely, crash barriers are 'seated' on flange plates of upper beam bodies of bridges as shown in figure 1 (a).

In order to improve the durability of a bridge, beautify the appearance of the bridge and solve the erosion and corrosion of rainwater to a beam body on the upper part of the bridge, a structural form 1(b) that the bottom of a guardrail is wrapped outside a flange plate of the beam body is gradually adopted in the years, and the existing partially wrapped guardrail adopts a structural form that the bottom of the guardrail is wrapped outside the flange plate of the beam body, so that the appearance of the bridge can be beautified and the erosion and corrosion problem of rainwater to the beam body on the upper part of the bridge can be solved, but the following problems still exist: 1. the guardrails are deviated outwards, so that the bridge deck width and the occupied land width are increased, and the engineering cost is increased; 2. the structure of the guardrail is that the bottom outer wrapping part is separated from the flange plate of the beam body and is not integrated with the flange plate, the guardrail and the flange plate are connected at the bottom non-outer wrapping part, as shown in figure 1(c), the part circled in figure 1(c) is a connecting part, the outer wrapping part only plays the roles of beauty and water flow scouring prevention and does not participate in the stress of the guardrail structure; as shown in fig. 1(c), the outer shape of the bottom outer wrapping part of the existing outer wrapping type guardrail is either sharp in edge angle, as shown in fig. 1(d), or wide in bottom and narrow in upper part, which all have adverse effects on the quality control of guardrail construction. 1(c) the guardrail is easy to collide with edges and corners after being demoulded, which is unfavorable for the appearance of the guardrail and easy to expose ribs; 1(d) the bottom of the outer wrapping part of the guardrail is wide, the upper part of the outer wrapping part of the guardrail is narrow, the bottom template is difficult to manufacture and disassemble, and the outer wrapping part of the guardrail is easy to collide with the template during the template disassembly, so that the forming appearance of the guardrail is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims to provide a bridge railing base outsourcing structure. The utility model improves the whole structure layout of the guardrail, leads the guardrail or the guardrail base and the beam body flange plate to be connected into a whole, and improves the whole stability and safety of the guardrail; the appearance of the outer wrapping part is improved, the construction template is more convenient to manufacture, and the construction quality control of pouring and demolding of the guardrail or the guardrail base is more facilitated.

The technical scheme of the utility model is that: a bridge guardrail base outer-wrapping structure is characterized in that a rear pouring section is reserved at the end part of a beam body flange plate, the beam body flange plate further comprises a rear pouring section steel bar pre-buried in the rear pouring section, the rear pouring section steel bar is exposed, the guardrail base outer-wrapping structure is provided with an outer-wrapping part steel bar, and the outer-wrapping part steel bar is connected with the rear pouring section steel bar and is integrally cast in a vertical mold; the guardrail base is provided with non-outer-wrapping part steel bars at the non-outer-wrapping part, and the non-outer-wrapping part steel bars are connected with the beam body flange plate steel bars;

the outer packing structure of guardrail base extends to and forms the extension in the decking, the extension includes first vertical section, the vertical section of second and connects the smooth curve section of first vertical section and the vertical section of second, it is parallel between first vertical section and the vertical section of second.

Through the scheme, the guardrail base outer covering structure and the beam body flange plate are arranged into a whole, and the guardrail base outer covering structure and the beam body flange plate are connected through the steel bars and poured into a whole, so that the guardrail or the guardrail base and the beam body flange plate are rigidly connected in the whole guardrail width range, the whole stability and safety of the guardrail are improved, the width of a bridge deck is not increased, the occupied area is not increased, and the engineering cost is saved. The outer structure of wrapping up of base extends to the decking and forms the extension, and the bottom end has adopted slick and sly, the smooth exterior shape design of lines, and not only the appearance is more pleasing to the eye, and the preparation of template and the drawing of patterns after pouring the completion are all more convenient moreover, do benefit to construction quality control more.

As a further optimization of the scheme, the first vertical section is located on the outer side of the beam body flange plate, the second vertical section is located on the inner side of the beam body flange plate, and the depth of the first vertical section extending to the position below the bridge deck is greater than that of the second vertical section. In this way, in order to further enhance the demolding after pouring, the pressure of the extension part is more biased to the inner side of the guardrail, and the fastening performance is further enhanced.

As a further optimization of the scheme, the width of the rear pouring section is 15-18 cm. Such back pouring section width scope has decided the width scope of guardrail base outsourcing structure, here can beautify the bridge outward appearance and solve the problem of the erosion and corrosion of rainwater to bridge upper portion roof beam body, can also save construction material under the prerequisite of guaranteeing the steadiness moreover.

According to the scheme, a bridge deck pavement layer is arranged on the upper portion of the bridge deck slab, a reinforcing mesh is paved on the bridge deck pavement layer, the reinforcing mesh is paved into the rear pouring section along the horizontal direction, and an asphalt concrete surface layer is arranged on the upper portion of the bridge deck pavement layer. The reinforcing bar net of mating formation improves the intensity on bridge deck pavement layer, improves the wholeness on bridge deck pavement layer and prevents the fracture, lays and also strengthens the steadiness of pouring the section to pouring in the section.

As a further optimization of the scheme, a first inclined plane, a second inclined plane and a vertical plane are arranged in the vertical direction of the guardrail on the inner side of the flange plate of the beam body, the included angle between the first inclined plane and the horizontal direction is 80-85 degrees, and the included angle between the second inclined plane and the horizontal direction is 50-55 degrees; the guardrail outside the beam body flange plate is gradually narrowed from bottom to top. This structure makes effort on the guardrail base disperse to the equidirectional not, guardrail base and bridge floor contact site bit wide, and upper portion is narrow, and the base steadiness is good like this. In addition, the first inclined plane and the second inclined plane are designed, and the inclination of the first inclined plane and the second inclined plane is limited, so that the situation that the bottom of the vehicle body collides first when the vehicle body is opened in a head-on mode is met, a warning effect and a blocking effect are achieved, and the damage degree of the vehicle body caused by accidents is reduced.

As a further optimization of the scheme, the guardrail is integrally made of concrete with the strength of above C30.

Compared with the prior art, the utility model, beneficial effect is:

1. the utility model improves the whole structure layout of the guardrail, leads the guardrail or the guardrail base and the beam body flange plate to be connected into a whole, and improves the whole stability and safety of the guardrail; the appearance of the base outer-wrapping structure is improved, the construction template is more convenient to manufacture, and the construction quality control of pouring and demolding of the guardrail or the guardrail base is more facilitated.

2. The utility model discloses guardrail or guardrail base all have reinforcing bar and roof beam body flange plate steel bar connection in outsourcing and non-outsourcing part, make guardrail or guardrail base and roof beam body flange plate at whole guardrail width within range rigid connection, both improved the whole steadiness and the security of guardrail, do not increase the bridge floor width again and take up an area of the width, practiced thrift the engineering cost.

Drawings

FIGS. 1(a), 1(b), 1(c), 1(d) are schematic views of a prior art guardrail base;

FIG. 2 is a structural view of a side rail of the present invention;

FIG. 3 is a side reinforcement diagram of the guardrail of the present invention;

in the figure: 1-guardrail, 2-beam body flange plate, 3-post-cast section, 4-outer wrapping structure, 5-non-outer wrapping structure, 6-first vertical section, 7-second vertical section, 8-reinforcing mesh, 9-asphalt concrete surface layer, 10-post-cast section reinforcing steel bar and 11-bridge deck pavement layer;

Detailed Description

The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that the functions, methods, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.

In the description of the present embodiments, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to a number of indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

The terms "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; 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 meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.

Example 1:

as shown in fig. 2-3, in the bridge guardrail base outer-wrapping structure, a rear pouring section 3 is reserved at the end of a beam body flange plate 2, the beam body flange plate 2 further comprises rear pouring section steel bars 10 pre-buried in the rear pouring section, the rear pouring section steel bars 10 are exposed, an outer-wrapping part steel bar is arranged on an outer-wrapping structure 4 of the guardrail base, and the outer-wrapping part steel bars are connected with the rear pouring section steel bars 10 and are vertically cast into a whole; the base of the guardrail 1 is provided with non-outer-wrapping part steel bars on a non-outer-wrapping structure 5, and the non-outer-wrapping part steel bars are connected with the beam body flange plate steel bars;

the outer packing structure of the guardrail base extends into the bridge deck plate to form an extension part, the extension part comprises a first vertical section 6, a second vertical section 7 and a smooth curve section which connects the first vertical section 6 and the second vertical section 7, and the first vertical section 6 and the second vertical section 7 are parallel.

The existing partial outer wrapping type guardrail adopts a structural form that the bottom of the guardrail is wrapped outside a flange plate of a beam body, so that the guardrail deflects outwards and the width of a bridge deck is increased; the outer wrapping part of the outer wrapping type guardrail bottom is clear in edge and corner or narrow in the wide upper part of the bottom, so that the bottom template is difficult to manufacture and disassemble, and is easy to collide with when the template is disassembled, and the forming appearance of the guardrail is influenced.

Through the scheme, the guardrail base outer covering structure and the beam body flange plate are arranged into a whole, and the guardrail base outer covering structure and the beam body flange plate are connected through the steel bars and poured into a whole, so that the guardrail or the guardrail base and the beam body flange plate are rigidly connected in the whole guardrail width range, the whole stability and safety of the guardrail are improved, the width of a bridge deck is not increased, the occupied area is not increased, and the engineering cost is saved. The outer structure of wrapping of base extends to the decking and forms the extension, and the bottom end has adopted slick and sly, the smooth arc external shape design of lines, and not only the appearance is more pleasing to the eye, and the preparation of template and the drawing of patterns after pouring the completion are sharp not have the edges and corners moreover, and the drawing of patterns face is slick and sly, and is more convenient, is favorable to construction quality control. The first vertical section is parallel to the second vertical section, and the bottom template is easier to manufacture compared with the structure of the prior art with a wide upper part or a narrow lower part.

Preferably, the first vertical section is located outside the beam body flange plate, the second vertical section 7 is located inside the beam body flange plate, and the depth of the first vertical section 6 extending to the lower part of the bridge deck is greater than that of the second vertical section. In this way, in order to further enhance the demolding after pouring, the pressure of the extension part is more biased to the inner side of the guardrail, and the fastening performance is further enhanced.

Preferably, the width of the rear casting section 3 is 15-18 cm. In this embodiment, 15cm is used.

Preferably, the bridge deck slab upper portion is equipped with bridge deck pavement layer 11, bridge deck pavement layer 11 paves reinforcing bar net 8, reinforcing bar net 8 is in the horizontal direction is laid to back pouring section 3, bridge deck pavement layer 11 upper portion is asphalt concrete surface course 9. The reinforcing bar net of mating formation improves the intensity on bridge deck pavement layer, improves the wholeness on bridge deck pavement layer and prevents the fracture, lays and also strengthens the steadiness of pouring the section to pouring in the section.

Example 2:

the differences between this example and example 1 are: the optimized design is made with the structure of guardrail, and satisfying above-mentioned guardrail base outsourcing performance and firm, difficult crack, when solving the erosion and corrosion problem of rainwater to the bridge upper portion roof beam body, the cushion effect of reinforcing guardrail itself also reduces the damage to guardrail outsourcing structure.

A first inclined plane, a second inclined plane and a vertical plane are arranged in the vertical direction of the guardrail on the inner side of the beam body flange plate, the included angle between the first inclined plane and the horizontal direction (shown by a dotted line in figure 2) is 80-85 degrees, and the included angle between the second inclined plane and the horizontal direction is 50-55 degrees; the guardrail outside the beam body flange plate is integrally inclined towards the inner side of the bridge deck from bottom to top. In this embodiment, the included angle between the first inclined plane and the horizontal direction is 84 degrees, the included angle between the second inclined plane and the horizontal direction is 55 degrees, and the height of the guardrail is 1050 mm.

This structure makes the not equidirectional dispersion of effort on the guardrail base, guardrail base and bridge floor contact site bit wide, and upper portion is narrow, and the base steadiness is good like this. In addition, so design first inclined plane and second inclined plane to its gradient restriction, be in order to satisfy when the automobile body head-on comes the automobile body bottom collision earlier, play alert effect and hindrance effect, reduce the damage degree that the accident caused the automobile body, also avoid damaging guardrail surrounding structure, influence the stability of guardrail and the erosion and corrosion problem of rainwater to bridge upper portion roof beam body.

The whole body is made of concrete with the strength of C30 and above C30.

The utility model discloses use the guardrail of different security levels, possess the commonality, like ss level and SA level all can.

The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (6)

1. A bridge guardrail base outer-wrapping structure comprises a bridge guardrail and a beam body flange plate on the upper portion of a bridge, and is characterized in that a rear pouring section is reserved at the end portion of the beam body flange plate, the beam body flange plate further comprises a rear pouring section steel bar pre-embedded in the rear pouring section, the rear pouring section steel bar is exposed, an outer-wrapping part steel bar is arranged on the outer-wrapping structure of the bridge guardrail base, and the outer-wrapping part steel bar is connected with the rear pouring section steel bar and is integrally poured in a vertical mold; the guardrail base is provided with non-outer-wrapping part steel bars at the non-outer-wrapping part, and the non-outer-wrapping part steel bars are connected with the beam body flange plate steel bars;

the outer packing structure of guardrail base extends to and forms the extension in the decking, the extension includes first vertical section, the vertical section of second and connects the smooth curve section of first vertical section and the vertical section of second, it is parallel between first vertical section and the vertical section of second.

2. The bridge railing base outer covering structure as claimed in claim 1, wherein the first vertical section is located outside the beam body flange plate, the second vertical section is located inside the beam body flange plate, and the first vertical section extends to a depth below the bridge floor greater than the second vertical section.

3. The bridge railing base outer covering structure as claimed in claim 1, wherein the rear casting section has a width of 15-18 cm.

4. The bridge guardrail base outer covering structure as claimed in claim 1, wherein a bridge deck is provided on the bridge deck, the bridge deck is paved with reinforcing mesh, the reinforcing mesh is paved into the post-pouring section along the horizontal direction, and the upper portion of the bridge deck is asphalt concrete surface layer.

5. The bridge guardrail base outer-covering structure as claimed in claim 1, wherein a first inclined plane, a second inclined plane and a vertical plane are arranged on the guardrail at the inner side of the beam body flange plate in the vertical direction, the included angle between the first inclined plane and the horizontal direction is 80-85 degrees, and the included angle between the second inclined plane and the horizontal direction is 50-55 degrees; the guardrail outside the beam body flange plate is gradually narrowed from bottom to top.

6. The bridge guardrail base envelope structure of claim 1, wherein the guardrail is integrally made of concrete with strength of C30 or more.

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