CN213476663U - Structure for continuously supporting and transversely reinforcing small box girder - Google Patents
Structure for continuously supporting and transversely reinforcing small box girder Download PDFInfo
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- CN213476663U CN213476663U CN202021834663.0U CN202021834663U CN213476663U CN 213476663 U CN213476663 U CN 213476663U CN 202021834663 U CN202021834663 U CN 202021834663U CN 213476663 U CN213476663 U CN 213476663U
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Abstract
一种连续支撑横向加固小箱梁结构构造，由小箱梁、连续横梁、撑杆系统和顶板相互连接组成连续横向加强结构，连续横梁水平布置于小箱梁的下方，并连续横跨2个以上小箱梁的截面位置，连续横梁与小箱梁的底板连接并固定，横向相邻的小箱梁的连续横梁与顶板之间设有撑杆系统，撑杆系统的上部与小箱梁的顶板或腹板连接，下部与连续横梁连接并固定，小箱梁、连续横梁、撑杆系统共同组成连续支撑横向加固小箱梁结构构造。该连续支撑用于加固桥梁，主要材料可预制、易标准化，大大提高了施工效率，通过设置连续支撑增加了桥梁横向联系，提高了小箱梁的共同工作能力，加强了桥梁的整体刚度。
A continuous support laterally reinforced small box girder structure structure, which is composed of a small box girder, a continuous beam, a strut system and a top plate connected to each other to form a continuous lateral reinforcement structure, the continuous beam is horizontally arranged below the small box girder, and continuously spans 2 The cross-sectional position of the above small box girder, the continuous beam is connected and fixed with the bottom plate of the small box girder, and a strut system is provided between the continuous beam and the top plate of the horizontally adjacent small box girder, and the upper part of the strut system is connected to the small box girder. The top plate or the web is connected, the lower part is connected and fixed with the continuous beam, and the small box beam, the continuous beam and the strut system together form the continuous support and transverse reinforcement of the small box beam structure. The continuous support is used to strengthen the bridge. The main materials can be prefabricated and easy to standardize, which greatly improves the construction efficiency. The continuous support increases the lateral connection of the bridge, improves the co-working ability of the small box girder, and strengthens the overall stiffness of the bridge.
Description
Technical Field
The utility model belongs to the civil engineering field, concretely relates to bridge reinforcement technique, especially a support in succession and transversely consolidate trabecula structure.
Background
On the expressway, the small reinforced concrete box girders are widely applied, and the small reinforced concrete box girders are transversely connected through wet joints or through diaphragm plates. However, in the application process, due to the long-term action of vehicle load, the wet joints and the diaphragm plates are easy to damage, and the connection between the small box girders becomes weak, so that the small box girders lose the capability of bearing load together, threaten the safety of the bridge and often need to face the reinforcement requirement.
Aiming at the requirements, a reinforcing method for increasing the diaphragm plate is often adopted, but the workload is large and the construction period is long. Researchers are also continuously developing new structural bridges, for example, chinese patent No. CN 204715224U, disclosing a box girder reinforcing structure based on i-beam diaphragm girders, which is respectively laid on a plurality of box girders by a plurality of steel plate-concrete combined reinforcing structures and connected into a whole by one or more transverse connecting structures; the transverse connecting structure is divided into a plurality of transverse partition beams, and each transverse partition beam is connected between two adjacent steel plate-concrete combined reinforcing structures. The utility model has reasonable design, simple construction and good reinforcement effect, can effectively improve the transverse connection rigidity of the box girder, and can not damage the box girder, but the utility model can not well transmit the load at the top plate between the box girders to the box girder, and still easily cause a series of diseases; for example, the Chinese patent No. CN 205421047U discloses a reinforcing structure for pasting FRP plates inside and outside the bottom of a box girder, newly-added inner FRP plates are pasted on the inner side and the outer side of the bottom plate of the box girder, and the FRP plates on the inner side and the outer side are anchored through high-strength bolts. However, the method only carries out conventional maintenance and reinforcement on the damaged part, and the whole stress system of the bridge is not changed. With the extension of the service time, the deflection of the middle part of the bridge is continuously developed, and the cracks reappear.
In conclusion, various existing bridge reinforcing schemes have a certain effect on repairing the damage, but most of the existing bridge reinforcing schemes cannot better improve a bridge stress system, and the problems are not fundamentally solved.
Disclosure of Invention
The utility model aims at providing a support in succession and transversely consolidate little case roof beam structure, the utility model discloses an innovation point lies in this support in succession and is used for consolidating the bridge, and the main material can be prefabricated, has improved the efficiency of construction greatly, has increased the horizontal contact of bridge through setting up the continuous support, with each case roof beam of even distribution of load that the bridge floor bore, the beam bottom work progress of every case roof beam goes on simultaneously, is showing and has improved the efficiency of construction for the construction process has strengthened the wholeness of bridge.
The technical scheme of the utility model is that: the utility model provides a support horizontal reinforcement little case roof beam structure in succession, by little case roof beam, continuous beam, vaulting pole system and roof board interconnect constitution continuous horizontal additional strengthening, continuous beam horizontal layout is in the below of little case roof beam, and span the cross-section position of 2 little case roof beams more than in succession, continuous beam is connected and is fixed with the bottom plate of little case roof beam, be equipped with the vaulting pole system between the continuous beam of horizontal adjacent little case roof beam and the roof board, the upper portion of vaulting pole system is connected with the roof board or the web of little case roof beam, the lower part is connected and is fixed with continuous beam, little case roof beam, continuous beam, vaulting pole system constitute continuous support horizontal reinforcement little case roof beam structure jointly.
The connection modes of the continuous beam, the brace rod system and the bridge top plate comprise one or more of bolt connection, adhesive connection, additional connecting piece connection and welding.
The continuous beam and the brace rod system are made of one or more of steel, glued bamboo, glued wood and FRP profiles, and the cross section of the continuous beam and the brace rod system is in a rectangular or circular shape.
The support rod system is composed of more than one rod piece and is in one or more of V-shaped, N-shaped, M-shaped, X-shaped and W-shaped.
The support rods are hollow members or composite concrete members, the core filling material is one of ultra-high performance concrete or light high-strength concrete, and the axial compressive strength of the core filling material is not less than 50 MPa.
The continuous beam and the brace rod system are arranged in one set or more than one set along the bridge direction, and a plurality of sets are arranged at intervals.
The utility model provides a support in succession and transversely consolidate trabecula structure, it is excellent to consolidate the effect, compares in traditional various reinforcement methods, the utility model discloses a support in succession and transversely consolidate the method, improved bridge structures's wholeness greatly on keeping the basis of original structure, have following apparent advantage:
(1) compared with the conventional bridge crack reinforcing methods such as carbon fiber cloth reinforcement, grouting, additional reinforcing steel bars and the like, the continuous supporting transverse reinforcing small box girder structure can uniformly distribute the load borne by the bridge deck on each small box girder, so that the phenomenon of overlarge local bearing load of the bridge is reduced, the occurrence of bridge diseases is reduced, and the service durability and the safety of the bridge structure are greatly improved.
(2) Related components can be prefabricated and finished by manufacturers, and can be directly installed and constructed after being transported to the site, so that the working efficiency is greatly improved.
(3) Construction procedures such as beam bottom reinforcing steel bar detection and concrete chiseling of each box girder and installation of components are independent and do not interfere with each other, construction can be carried out simultaneously, construction efficiency is remarkably improved, construction progress is accelerated, and guarantee is provided for project completion on schedule.
(4) The under-bridge construction does not need to have small influence on the on-bridge traffic.
(5) The reinforcing component is easy to be standardized, the factory construction is easy to realize, and the integral structure is attractive after the reinforcing component is reinforced.
Description of the drawings:
FIG. 1 is a schematic exploded cross-sectional view of a continuously supported laterally stiffened trabecular structure configuration;
FIG. 2 is a cross-sectional view of a continuous support transverse reinforcement trabecular structure configuration (strut system is V-shaped);
FIG. 3 is a cross-sectional view of a continuous support transverse reinforcement trabecular structure configuration (the brace system is N-shaped);
FIG. 4 is a cross-sectional view of a continuous support transverse reinforcement trabecular structure configuration (the brace system is M-shaped);
FIG. 5 is a cross-sectional view of a continuous support transverse reinforcement trabecular structure configuration (the brace system is X-shaped);
FIG. 6 is a cross-sectional view of a continuous support transverse reinforcement trabecular structure configuration (the brace system is X-shaped);
FIG. 7 is a cross-sectional view of a continuous support transverse reinforcement trabecular structure configuration (the brace system is X-shaped);
FIG. 8 is a cross-sectional view of a continuous support transverse reinforcement trabecular structure configuration (the brace system is W-shaped);
in the attached drawings, 1 is a box girder; 2 is a continuous beam; 3 is a brace rod system; 31 is a brace rod; 4 is a top plate.
The specific implementation mode is as follows:
in order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings. The utility model provides a support in succession and transversely consolidate little case roof beam structure, by little case roof beam 1, continuous beam 2, vaulting pole system 3 and 4 interconnect of roof constitute continuous horizontal additional strengthening, continuous beam 2 level arranges in the below of little case roof beam 1, and continuously span the cross-section position of 2 above little case roof beams, continuous beam 2 is connected and is fixed with little case roof beam 1's bottom plate, be equipped with vaulting pole system 3 between horizontal adjacent little case roof beam 1's continuous beam 2 and the roof 4, the upper portion of vaulting pole system 3 is connected with little case roof beam 1's roof 4 or web, the lower part is connected and is fixed with continuous beam 2, little case roof beam 1, continuous beam 2, vaulting pole system 3 constitutes jointly and supports horizontal reinforcement little case roof beam structure in succession.
The connection mode among the continuous beam 2, the brace rod system 3 and the bridge roof 4 comprises one or more of bolt connection, adhesive connection, connection by adding connecting pieces and welding.
The materials of the continuous beam 2 and the brace rod system 3 are one or more of steel, glued bamboo, glued wood and FRP profiles, and the cross section forms are one or more of rectangular and circular.
The brace rod system 3 is composed of more than one rod piece 31, and the form of the brace rod system 3 is one or more of V-shaped, N-shaped, M-shaped, X-shaped and W-shaped.
The support rods 31 are hollow members or composite concrete members, the core filling material is one of ultra-high performance concrete or light high-strength concrete, and the axial compressive strength of the core filling material is not less than 50 MPa.
The continuous beam 2 and the brace rod system 3 are arranged in one or more sets along the bridge direction, a plurality of sets are arranged at intervals, and the continuous beam 2 and the brace rod system 3 are arranged continuously or at intervals along the bridge direction.
Example 1:
as shown in fig. 2, the continuous supporting transverse reinforcing small box girder structure comprises a small box girder 1, a continuous cross girder 2, a brace system 3 and a top plate 4, wherein the brace system 3 is composed of brace rods 31 and arranged between the continuous cross girder 2 and the top plate 4 in a V-shaped structure.
Example 2:
as shown in fig. 3, the continuous supporting transverse reinforced small box girder structure comprises a small box girder 1, a continuous cross girder 2, a brace system 3 and a top plate 4, wherein the brace system 3 is composed of braces 31 and arranged between the continuous cross girder 2 and the top plate 4 in an N-shaped structure.
Example 3:
as shown in fig. 4, the continuous supporting transverse reinforced small box girder structure comprises a small box girder 1, a continuous cross girder 2, a brace system 3 and a top plate 4, wherein the brace system 3 is arranged between the continuous cross girder 2 and the top plate 4 in an M-shaped structure formed by brace rods 31.
Example 4:
as shown in fig. 5 to 7, a structure of a continuously supported and transversely reinforced small box girder comprises a small box girder 1, a continuous cross girder 2, a brace system 3 and a top plate 4, wherein the brace system 3 is formed by brace rods 31 to form an X-shaped structure arranged between the continuous cross girder 2 and the top plate 4, the upper end of the X-shaped structure can be located at different positions of the top plate 4 and the junction of a web of the small box girder 1 and the top plate 4, and the lower end of the X-shaped structure can be located at different positions of the continuous cross girder 2 and the junction of the web of the small box girder 1 and the continuous cross girder 2.
As shown in fig. 5 and fig. 8, the continuous supporting transverse reinforced small box girder structure comprises a small box girder 1, a continuous cross girder 2, a stay bar system 3 and a top plate 4, wherein the stay bar system 3 is composed of stay bars 31 and arranged between the continuous cross girder 2 and the top plate 4 in a W-shaped structure.
Claims (6)
1. The utility model provides a support horizontal reinforcement box girder structure in succession, by box girder (1), continuous beam (2), vaulting pole system (3) and roof (4) interconnect constitution horizontal additional strengthening in succession, continuous beam (2) level is arranged in the below of box girder (1), and continuously span the cross-section position of 2 above box girders, continuous beam (2) are connected and are fixed with the bottom plate of box girder (1), be equipped with vaulting pole system (3) between continuous beam (2) and roof (4) of horizontal adjacent box girder (1), the upper portion of vaulting pole system (3) is connected with roof (4) or the web of box girder (1), the lower part is connected and is fixed with continuous beam (2), box girder (1), continuous beam (2), vaulting pole system (3) constitute continuous support horizontal reinforcement box girder structure jointly.
2. A continuously supporting laterally stiffened girder construction as claimed in claim 1 wherein the continuous beam (2), brace system (3) and roof (4) are connected to each other by means of one or more of bolting, gluing, adding connecting members and welding.
3. The structure of continuously supported and transversely reinforced small box girder according to claim 1, wherein the continuous beam (2) and the brace rod system (3) are made of one or more of steel, glued bamboo, glued wood and FRP (fiber reinforced plastic) sections, and the cross section is one or more of rectangular and circular.
4. A continuously supporting laterally stiffened girder construction as claimed in claim 1 wherein said brace system (3) is comprised of more than one brace (31), the brace system (3) being in the form of one or more of V-shape, N-shape, M-shape, X-shape, W-shape.
5. The structure of a continuously supported and laterally reinforced trabecular member as claimed in claim 1, wherein said braces (31) are provided as hollow members or composite concrete members, the core filling material is one of ultra high performance concrete or lightweight high strength concrete, and the axial compressive strength of the core filling material is not less than 50 MPa.
6. A continuously supporting laterally stiffened girder construction as claimed in claim 1 wherein said continuous beam (2) and brace system (3) are mounted in one or more sets spaced apart along the length of the bridge.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021834663.0U CN213476663U (en) | 2020-08-21 | 2020-08-21 | Structure for continuously supporting and transversely reinforcing small box girder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021834663.0U CN213476663U (en) | 2020-08-21 | 2020-08-21 | Structure for continuously supporting and transversely reinforcing small box girder |
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| CN213476663U true CN213476663U (en) | 2021-06-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113512930A (en) * | 2021-07-05 | 2021-10-19 | 山西省交通科技研发有限公司 | Transverse reinforcing structure and construction method for assembled small box girder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113512930A (en) * | 2021-07-05 | 2021-10-19 | 山西省交通科技研发有限公司 | Transverse reinforcing structure and construction method for assembled small box girder |
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