CN215052196U - Stiff skeleton for closure of corrugated steel web bridge - Google Patents

Abstract

The application discloses a strength nature skeleton for wave form steel web bridge closure, this a strength nature skeleton for wave form steel web bridge closure includes: the first cross braces are arranged in two groups and erected on the top plates of the sections on the two sides of the closure section; the second cross braces are arranged into two groups which correspond to the first cross braces up and down, and the second cross braces are erected on the bottom plates of the sections on the two sides of the closure section; the bracing, the bracing sets up to two, the upper end of bracing and the first stull fixed connection that corresponds, lower extreme and the second stull fixed connection that corresponds, two the incline direction of bracing is opposite. When this application had been solved strength nature skeleton among the correlation technique and was applied to wave form steel web bridge closure construction, the structure is comparatively complicated, leads to construction period extension, is unfavorable for the smooth problem of going on of closure.

Description

Stiff skeleton for closure of corrugated steel web bridge

Technical Field

The application relates to the technical field of bridge closure construction, in particular to a stiff skeleton for a corrugated steel web bridge closure.

Background

The bridge is an important traffic line component, and particularly in the construction of high-grade highways, railways and urban elevated roads, the bridge is often a key structure for ensuring the traffic of all lines. The bridge construction technology is rapidly developed along with the improvement of science and technology and the improvement of industrial level, and gradually forms a three-dimensional network of China traffic, thereby greatly improving the current traffic situation and promoting the forward development of national economy. In order to ensure the quality and safety of tower column construction, the auxiliary construction by using the stiff skeleton is the most common mode, and when the stiff skeleton in the related technology is applied to the closure construction of a corrugated steel web bridge, the structure is complex, so that the construction period is prolonged, and the smooth closure is not facilitated.

Aiming at the problems that when a stiff framework in the related technology is applied to closure construction of a corrugated steel web bridge, the structure is complex, the construction period is prolonged, and closure is not facilitated to be smoothly carried out, an effective solution is not provided at present.

SUMMERY OF THE UTILITY MODEL

The main aim of this application provides a strength nature skeleton for wave form steel web bridge closure to when solving the strength nature skeleton among the correlation technique and being applied to wave form steel web bridge closure construction, the structure is comparatively complicated, leads to construction period extension, is unfavorable for the smooth problem of going on of closure.

In order to achieve the above object, the present application provides a stiff skeleton for a corrugated steel web bridge closure, including: the first cross braces are arranged in two groups and erected on the top plates of the sections on the two sides of the closure section; the second cross braces are arranged into two groups which correspond to the first cross braces up and down, and the second cross braces are erected on the bottom plates of the sections on the two sides of the closure section; the bracing, the bracing sets up to two, the upper end of bracing and the first stull fixed connection that corresponds, lower extreme and the second stull fixed connection that corresponds, two the incline direction of bracing is opposite.

Furthermore, the two ends of the first cross brace are fixed on the top plates of the sections on the two sides of the closure section through the first embedded members.

Furthermore, the two ends of the second cross brace are fixed on the bottom plates of the sections on the two sides of the closure section through second embedded members.

Further, first stull and second stull all set up to double pin I-steel.

Furthermore, the upper end and the lower end of the double-spliced I-shaped steel are connected through a batten plate, and the two ends of the batten plate are welded and fixed on the double-spliced I-shaped steel.

Further, the batten plate is arranged to be a plurality of and fixed on the double-spliced I-shaped steel at intervals.

Further, first pre-buried component is the same with the pre-buried component structure of second, all includes pre-buried steel sheet and sets firmly the embedded steel bar on pre-buried steel sheet.

In the embodiment of the application, by arranging the first cross braces, the first cross braces are arranged in two groups and erected on the top plates of the sections at two sides of the closure section; the second cross braces are arranged into two groups which correspond to the first cross braces up and down, and the second cross braces are erected on the bottom plates of the sections on the two sides of the closure section; the bracing, the bracing sets up to two, the upper end of bracing and the first stull fixed connection that corresponds, lower extreme and the second stull fixed connection that corresponds, two the slope opposite direction of bracing has reached and has simplified the structure purpose of strength nature skeleton when resisting the axial horizontal force that produces because of the case roof beam intensifies and resisting the bending moment that the case roof beam upwarps and downwarping produced to realized guaranteeing construction quality, improved the technological effect of efficiency of construction, and then when having solved strength nature skeleton among the correlation technique and being applied to wave form steel web bridge closure construction, the structure is comparatively complicated, leads to construction period extension, is unfavorable for the smooth problem of going on of closure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

FIG. 1 is a schematic structural diagram according to an embodiment of the present application;

FIG. 2 is a schematic diagram of an application side view structure according to an embodiment of the present application;

the steel plate comprises a first cross brace, 2 embedded steel bars, 3 embedded steel plates, 4 second cross braces, 5 second embedded components, 6 inclined struts, 7 batten plates, 8 first embedded components, 9 bottom plates and 10 top plates.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used.

In this application, the terms "upper", "lower", "inside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "disposed," "provided," "connected," "secured," and the like are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, the term "plurality" shall mean two as well as more than two.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to 2, an embodiment of the present application provides a stiff skeleton for a corrugated steel web bridge closure, including: the first cross braces 1 are arranged in two groups, and are erected on the top plates 10 of the sections on the two sides of the closure section; the second cross braces 4 are arranged into two groups which correspond to the first cross braces 1 up and down, and the second cross braces 4 are erected on the bottom plates 9 of the sections on the two sides of the closure section; bracing 6, bracing 6 sets up to two, the upper end and the first stull 1 fixed connection that corresponds of bracing 6, lower extreme and the 4 fixed connection of the second stull that correspond, the incline direction of two bracing 6 is opposite.

The temporary locking is the key of closure, the closure locking adopts an external stiff steel skeleton, the stiff skeleton in the embodiment adopts a three-section structure of 'embedded steel + connection section steel + embedded steel', and specifically comprises a first cross brace 1, a second cross brace 4, an inclined brace 6 and an embedded steel structure. The first cross brace 1 and the second cross brace 4 are identical in structure and are respectively fixed on a top plate 10 and a bottom plate 9 of sections on two sides of the closure section, and the two inclined braces 6 are used for connecting the corresponding first cross brace 1 and the corresponding second cross brace 4 to form a whole, so that the axial horizontal force generated by heating of the box girder is resisted, and the bending moment generated by upwarping and downwarping of the box girder is resisted as well. The stiff frameworks can be arranged into two groups and arranged transversely to the bridge direction according to the width of the bridge. Compared with the traditional stiff skeleton structure, the stiff skeleton in the embodiment is simpler and is more suitable for a corrugated steel web bridge, so that the construction efficiency of bridge closure can be improved.

As shown in fig. 1 to 2, two ends of the first cross brace 1 are fixed on the top plate 10 of the two side sections of the closure segment through the first embedded member 8. Two ends of the second cross brace 4 are fixed on the bottom plates 9 of the sections at two sides of the closure section through second embedded members 5. First stull 1 and second stull 4 all set up to double pin I-steel. The upper end and the lower end of the double-spliced I-shaped steel are connected through the batten plates 7, the two ends of the batten plates 7 are welded and fixed on the double-spliced I-shaped steel, and the two ends of the inclined struts 6 are fixed on the corresponding batten plates 7. First pre-buried component 8 is the same with the pre-buried component 5 structure of second, all includes pre-buried steel sheet 3 and sets firmly pre-buried reinforcing bar 2 on pre-buried steel sheet 3.

In this embodiment, the h-beam is a hot-rolled light h-beam (the length can be adjusted appropriately according to the actual measurement length of the closure segment), and both the section steel and the steel plate are made of Q355C steel. The anchoring steel bars and the embedded steel plates 3 are welded on two sides. The flange of the I-shaped steel is fully welded with the periphery of the embedded steel plate 3, the periphery of the batten plate 7 is fully welded with the I-shaped steel, and the height of a welding line is not less than 10 mm. When the embedded steel plate 3 and the steel bars interfere with the box girder structure bars, the position of the structure bars can be properly adjusted, and if the embedded steel plate and the steel bars collide with the prestressed bars, the rigid connection structure can be properly translated. The batten plate 7 is arranged into a plurality of and fixed on the double-spliced I-shaped steel at intervals.

In order to shorten the temporary locking time as much as possible, welding I-shaped steel at one end (close to the approach bridge side) of a closure section in advance, welding the I-shaped steel at the other end after the minimum temperature of the day is stable (the temperature is 20 ℃ of the expected closure temperature) and the cantilever is pre-pressed stably to determine that the closure error of a beam body meets the requirement, welding a bottom plate 9 and a top plate 10 (adopting spot welding and then subsection discontinuous symmetrical welding), and when the embedded steel plate 3 cannot be closely attached to a stiff framework, padding the steel plate with a thin steel plate to fill up the gap, and fully piling up the welding line; concrete pouring should be carried out as soon as possible after the closure section is temporarily locked. In order to quickly complete the locking welding of the stiff skeleton, a plurality of welding machines (not less than 8) are arranged to simultaneously and symmetrically weld joints when closing. When the side span closure stiff skeleton is welded, the welding machines are all placed on the side span cast-in-place section, and when the mid span closure section is arranged, the welding machines are symmetrically placed on the sections on the two sides of the closure section.

After the welding of the stiff skeleton is finished, the connection between the steel bars at the closure section and the steel bars at the other end is immediately finished, the workload is high during construction, the connection is required to be finished within 2 hours after the stiff skeleton is locked, sufficient time is reserved for subsequent concrete pouring, and the welding time is short for night construction, so sufficient personnel and machinery, especially enough welders with good technology, are prepared in advance.

In order to counteract the influence of temperature force on the concrete of the closure section and reduce the temperature deformation of the beam body, the longitudinal prestressed closure beam is pretensioned after the temporary rigid connection (stiff framework) structure is installed, and the closure section is finally tensioned according to the design requirement after the closure section is poured.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (7)

1. A stiff skeleton for a corrugated steel web bridge closure, comprising:

the first cross braces are arranged in two groups and erected on the top plates of the sections on the two sides of the closure section;

the second cross braces are arranged into two groups which correspond to the first cross braces up and down, and the second cross braces are erected on the bottom plates of the sections on the two sides of the closure section;

the bracing, the bracing sets up to two, the upper end of bracing and the first stull fixed connection that corresponds, lower extreme and the second stull fixed connection that corresponds, two the incline direction of bracing is opposite.

2. A stiff skeleton for wave form steel web bridge closure of claim 1, characterized in that, the both ends of first stull are fixed on the roof of closure section both sides section through first pre-buried component.

3. A stiff skeleton for a corrugated steel web bridge closure according to claim 2, wherein both ends of the second cross-brace are fixed to the bottom plates of the segments at both sides of the closure section by second embedded members.

4. A stiff skeleton for a corrugated steel web bridge closure according to claim 3, wherein the first and second crossbrace are both provided as double-spliced I-steel.

5. A stiff skeleton for a wave-shaped steel web bridge closure according to claim 4, characterized in that the upper and lower ends of the double-spliced I-steel are connected through a batten plate, and the two ends of the batten plate are welded and fixed on the double-spliced I-steel.

6. A stiff skeleton for a wave steel web bridge closure according to claim 5, characterized in that the lacing plate sets up a plurality and fixes on the double H-steel at interval.

7. A stiff skeleton for wave form steel web bridge closure according to claim 6, characterized in that, first pre-buried component and second pre-buried component structure is the same, all includes pre-buried steel sheet and the embedded reinforcing bar of fixing on pre-buried steel sheet.

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