CN212335791U - Connecting structure between top plate and corrugated steel web plate in bridge cantilever asynchronous construction - Google Patents
Connecting structure between top plate and corrugated steel web plate in bridge cantilever asynchronous construction Download PDFInfo
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- CN212335791U CN212335791U CN202020625643.6U CN202020625643U CN212335791U CN 212335791 U CN212335791 U CN 212335791U CN 202020625643 U CN202020625643 U CN 202020625643U CN 212335791 U CN212335791 U CN 212335791U
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Abstract
The utility model discloses a connection structure between roof and the wave form steel web in the asynchronous construction of bridge cantilever, especially in the asynchronous work progress of wave form steel web combination bridge cantilever for reduce the structure measure of the asynchronous construction roof front end stress of wave form steel web cantilever. The connecting structure comprises a perforated plate, a rubber ring and an upper flange plate fixed at the top of the web plate, the perforated plate is connected with the upper flange plate to form a perforated plate connecting piece, and holes of the perforated plate are used for penetrating steel bars; and before the top plate is cast with concrete, arranging a rubber ring in the foremost hole of the perforated plate positioned in the top plate at the end part of the cantilever. The utility model discloses utilize the characteristics that rubber circle rigidity is little, in the asynchronous work progress of cantilever, under the condition that does not influence steel and concrete faying face shear strength, can effectively reduce roof front end concrete stress, effectively improve the stress state of wave form steel web combination bridge joint portion in the asynchronous work progress of pouring, improve the security performance, be applicable to steel and concrete composite structure engineering.
Description
Technical Field
The utility model relates to a construction field especially relates to a connection structure between roof and the wave form steel web in the asynchronous construction of bridge cantilever.
Background
At present, the cantilever asynchronous pouring construction method is widely applied to construction of a large-span variable-section corrugated steel web composite bridge. The cantilever casting construction utilizing the bearing of the corrugated steel web bears the load of the cradle through the corrugated steel web, the construction operation surface is increased while the bearing capacity of the steel web is fully exerted, concrete of the top bottom plate of the same section can be separately cast, namely, the casting of the bottom plate of the nth section, the casting of the top plate of the (n-1) th section and the installation of the corrugated steel web of the (n + 1) th section are synchronously carried out, the construction period is greatly shortened, and the construction cost is saved.
However, in the construction process of asynchronous casting of the cantilever, when the load of the cradle acts on the corrugated steel web, the front end of the top plate cantilever often has the condition of larger concrete stress. For the corrugated steel web composite bridge, a common connection structure between the concrete top plate and the corrugated steel web is a perforated plate, and corresponding to the connection form, under the action of construction load, the problem that the local stress at the foremost end hole of the perforated plate in the top plate at the end part of the cantilever is large is prominent, so that the stress performance of the composite structure is seriously influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a novel connection structure between roof and the wave form steel web in being arranged in asynchronous construction of bridge cantilever can reduce the front end stress of wave form steel web combination bridge cantilever asynchronous construction roof to solve above-mentioned technical problem.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a connection structure between a top plate and a corrugated steel web plate in asynchronous construction of a bridge cantilever, which comprises a perforated plate, a rubber ring and an upper flange plate fixed at the top of the web plate, wherein the perforated plate is connected with the upper flange plate to form a perforated plate connecting piece, and a hole of the perforated plate is used for penetrating a reinforcing steel bar; and before the top plate is cast with concrete, the rubber ring is arranged in the foremost hole of the perforated plate positioned in the top plate at the end part of the cantilever.
Optionally, the apertured plate is welded to the upper flange plate.
Optionally, a steel bar is arranged in each hole of the perforated plate in a penetrating mode.
Optionally, a concave groove is formed in the outer edge of the rubber ring, and the rubber ring is clamped in the inner edge of the hole through the concave groove; and the flange at the inner side of the concave groove is attached to the perforated plate.
Optionally, the perforated plate is a perforated steel plate; the upper flange plate is an upper flange steel plate.
Optionally, in each construction segment, the rubber ring is arranged in a front end hole of the perforated plate located on the inner side of the transition of the top plate segment.
Optionally, one to two holes at the foremost end of the perforated plate are provided with the rubber ring.
Optionally, the reinforcing steel bar is a constructional reinforcing steel bar in the concrete top plate.
The utility model provides a connection structure between roof and the wave form steel web has gained following technological effect for prior art in the asynchronous construction of bridge cantilever:
the utility model provides a can reduce cantilever front end concrete stress's tectonic measure utilizes the characteristics that rubber circle rigidity is little, in the asynchronous work progress of cantilever, under the condition that does not influence steel and concrete faying face shear strength, can effectively reduce roof front end concrete stress, effectively improves the stress state of wave form steel web composite bridge joint portion in the asynchronous work progress of pouring, improves the security performance, is applicable to steel and concrete composite structure engineering.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic view of an application scenario of the connection structure provided by the present invention;
FIG. 2 is a schematic view of a part of the arrangement position of the rubber ring in the connection structure provided by the present invention;
fig. 3 is a schematic structural view of a rubber ring in the connection structure provided by the present invention;
wherein the reference numerals are: 1. the top plate to be poured of the previous section; 2. the current segment is to be poured into the bottom plate; 3. asynchronous construction hanging baskets; 4. a segment separation line; 5. a rubber ring; 6. a perforated plate; 7. a top flange steel plate; 8. and (4) holes.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
The first embodiment is as follows:
as shown in fig. 1 to 3, the present embodiment provides a connection construction measure for reducing stress at the front end of a top plate in asynchronous construction of a corrugated steel web composite bridge cantilever, which is used between the top plate and the corrugated steel web in asynchronous construction of a bridge cantilever, the construction measure is mainly directed at a connection portion between the corrugated steel web and a concrete top plate, and the positional relationship among a top plate 1 to be poured at a previous section, a bottom plate 2 to be poured at a current section, and an asynchronous construction hanging basket 3 is shown in fig. 1. The connecting structure comprises an upper flange steel plate 7, a perforated plate 6, a rubber ring 5 and a steel bar; trompil board 6 is the trompil floor, forms the trompil board connecting piece on being fixed in top flange steel sheet 7 through the welding, and every trompil board 6 is provided with a plurality of holes 8 along vertically, all wears to be equipped with the through reinforcement in all holes 8. Here, the through-reinforcement may be provided using a structural reinforcement in the concrete roof. And arranging a rubber ring 5 before concrete pouring of each section of the top plate, wherein the arrangement position is positioned at a section separation line 4 between the top plate 1 to be poured of the previous section and the next section, and holes at the foremost end of the perforated plate 6 in the top plate 1 to be poured of the previous section are arranged.
In this embodiment, the rubber ring 5 is disposed at each construction section, a hole is formed in the front end of the perforated plate 6 at the inner side of the transition of the top plate section, and the corrugated steel web composite bridge cantilever is symmetrically arranged in a spanning manner in the asynchronous construction process.
As shown in fig. 3, the outer edge of the rubber ring 5 is provided with a concave groove, the rubber ring 5 is clamped at the inner edge of the hole of the perforated plate at the foremost end of the cantilever through the concave groove, and the outer flange of the rubber ring 5 is attached to the perforated plate 6 and tightly combined with the perforated plate. The size parameters of the rubber ring 5 mainly comprise the inner diameter of the rubber ring, the thickness of the rubber ring and the diameter of the external flange. In the asynchronous casting construction process of the cantilever, the rubber rings 5 can be arranged in one to two holes 8 at the foremost ends of the perforated plates at the positions of the partition lines 4 of each construction section and on the inner side of the top plate to be cast, and the arrangement number can be further determined by actual engineering. And after the rubber ring 5 is arranged, binding the steel bars in the top plate to be poured, and pouring concrete.
Above-mentioned, the utility model discloses a can reduce cantilever front end concrete stress's tectonic measure has following beneficial effect:
1. the stress at the front end of the top plate in the asynchronous cantilever pouring construction process is effectively reduced;
2. the applying efficiency of the prestress of the concrete top plate in the corrugated steel web composite bridge is effectively improved;
3. the construction safety is improved, and the structure stress performance is good.
It should be noted that, as is obvious to a person skilled in the art, the invention is not limited to details of the above-described exemplary embodiments, but can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. 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, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (8)
1. The utility model provides a connection structure between roof and corrugated steel web in asynchronous construction of bridge cantilever which characterized in that: the steel bar-reinforced composite plate comprises a perforated plate, a rubber ring and an upper flange plate fixed at the top of a web plate, wherein the perforated plate is connected with the upper flange plate to form a perforated plate connecting piece, and holes of the perforated plate are used for penetrating steel bars; and before the top plate is cast with concrete, the rubber ring is arranged in the foremost hole of the perforated plate positioned in the top plate at the end part of the cantilever.
2. The connection structure between the top plate and the corrugated steel web plate in the asynchronous construction of the bridge cantilever according to claim 1, characterized in that: the perforated plate is welded on the upper flange plate.
3. The connection structure between the top plate and the corrugated steel web plate in the asynchronous construction of the bridge cantilever according to claim 1, characterized in that: and reinforcing steel bars are arranged in each hole of the perforated plate in a penetrating manner.
4. The connection structure between the top plate and the corrugated steel web plate in the asynchronous construction of the bridge cantilever according to claim 1, characterized in that: the outer edge of the rubber ring is provided with a concave groove, and the rubber ring is clamped at the inner edge of the hole through the concave groove; and the flange at the inner side of the concave groove is attached to the perforated plate.
5. The connection structure between the top plate and the corrugated steel web plate in the asynchronous construction of the bridge cantilever according to claim 1, characterized in that: the perforated plate is a perforated steel plate; the upper flange plate is an upper flange steel plate.
6. The connection structure between the top plate and the corrugated steel web plate in the asynchronous construction of the bridge cantilever according to claim 1, characterized in that: and in each construction section, the rubber ring is arranged in a front end hole of the perforated plate positioned on the inner side of the transition of the top plate section.
7. The connection structure between the top plate and the corrugated steel web plate in the asynchronous construction of the bridge cantilever according to claim 6, characterized in that: one to two holes at the foremost end of the perforated plate are distributed with the rubber rings.
8. The connection structure between the top plate and the corrugated steel web plate in the asynchronous construction of the bridge cantilever according to claim 1, characterized in that: the reinforcing steel bars are structural reinforcing steel bars in the concrete top plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020625643.6U CN212335791U (en) | 2020-04-23 | 2020-04-23 | Connecting structure between top plate and corrugated steel web plate in bridge cantilever asynchronous construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020625643.6U CN212335791U (en) | 2020-04-23 | 2020-04-23 | Connecting structure between top plate and corrugated steel web plate in bridge cantilever asynchronous construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212335791U true CN212335791U (en) | 2021-01-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020625643.6U Active CN212335791U (en) | 2020-04-23 | 2020-04-23 | Connecting structure between top plate and corrugated steel web plate in bridge cantilever asynchronous construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212335791U (en) |
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2020
- 2020-04-23 CN CN202020625643.6U patent/CN212335791U/en active Active
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