CN-121992717-A - Reinforced-free composite bridge deck with bidirectional buckles

Abstract

The invention discloses a reinforced-free composite bridge deck with two-way buckles, which comprises a plurality of U-shaped channel steels, longitudinal limit buckles, transverse limit buckles and a concrete layer, wherein the U-shaped channel steels are arranged side by side in a transverse direction along a bridge deck, the longitudinal limit buckles are used for limiting longitudinal displacement, the transverse limit buckles are used for limiting transverse displacement, and the concrete layer is poured on a steel skeleton formed by the components. The U-shaped steel groove realizes longitudinal and transverse mechanical connection through a bidirectional buckle to form a stable space grid framework system. According to the invention, through the connection mode of the bidirectional buckle, the on-site welding and steel bar binding operation in the traditional bridge deck slab are completely avoided, and the complete prefabrication and rapid assembly construction of the components are realized. Concrete is poured on the steel skeleton to form an integral composite structure. According to the invention, the connection structure of the bidirectional buckle effectively ensures the integrity and the stress performance of the structure, and the pouring of the concrete top plate further improves the integrity and the durability of the structure. Meanwhile, the bridge deck is convenient and quick to construct and controllable in quality.

Inventors

• WU BIAO
• QI XIANGCHENG
• SU WEI
• GU LI
• LI QINGHUA
• TONG JINGZHONG
• GUI QIANG
• CHEN YUNLONG
• ZHANG XIANG
• YU CHENGDA
• Huo Liangliang
• Chai Jilong

Assignees

• 中国建筑第八工程局有限公司
• 浙江大学

Dates

Publication Date

20260508

Application Date

20251204

Claims (6)

1. 1. The utility model provides a take no muscle compound decking of two-way buckle which characterized in that includes: The U-shaped steel groove comprises two side webs and a steel bottom plate at the lower part; the longitudinal limiting buckle is used for limiting the longitudinal displacement of the U-shaped steel; the transverse limiting buckle is used for limiting the transverse displacement of the U-shaped steel, and the transverse limiting buckle is required to be provided with holes at the joint of the transverse limiting buckle and the U-shaped steel and is clamped into the U-shaped channel steel; and the concrete layer is poured on the bridge deck plate steel skeleton formed by the U-shaped channel steel, the longitudinal limit buckles and the transverse limit buckles.
2. 2. The reinforced-free composite bridge deck with two-way snap-in of claim 1, wherein said U-channel is perforated on a web at the junction with said longitudinal limit snap-in for snapping said longitudinal limit snap-in into said U-channel.
3. 3. The reinforced-free composite bridge deck with two-way buckles of claim 1, wherein the number of longitudinal limit buckles is multiple, the number of transverse limit buckles is multiple, and the longitudinal limit buckles and the transverse limit buckles are alternately arranged on a plurality of U-shaped channel steel.
4. 4. The reinforced-free composite deck slab with two-way snaps of claim 3, wherein said longitudinal and transverse spacing snaps are uniformly arranged on a plurality of U-shaped channels along the deck longitudinal spacing.
5. 5. The reinforced-free composite deck slab with two-way snaps of claim 1, wherein said longitudinal and transverse limit snaps are perpendicular to the web of said U-channel.
6. 6. The reinforced composite bridge deck with bi-directional locking according to claim 1, wherein the concrete layer has a thickness greater than the longitudinal and transverse limit locking.

Description

Reinforced-free composite bridge deck with bidirectional buckles Technical Field The invention relates to the technical field of structural engineering, in particular to a reinforced-free composite bridge deck with two-way buckles. Background Along with the sustainable development of the construction of the traffic infrastructure in China, the bridge engineering has higher requirements on the construction efficiency, the material economy and the structural durability. The steel-concrete combined bridge deck slab can fully exert the performance advantages of two materials, and is widely applied to modern bridge construction. The traditional combined bridge deck adopts a mode of combining a flat plate type steel plate and concrete, and realizes the combined action of the flat plate type steel plate and the concrete by welding studs, arranging reinforcing steel bars and the like. However, the conventional structure has a plurality of limitations that firstly, the flat plate type steel plate is limited in out-of-plane rigidity, and the longitudinal stiffening ribs and the transverse stiffening ribs are required to be additionally welded to improve the rigidity, so that the steel material consumption and the dead weight of a member are increased, a large number of field welding works are introduced, the construction period is prolonged, fatigue weak links are easy to form in a concentrated region of a welding line, secondly, a large number of bolts are required to be welded on the steel plate to ensure effective connection between the steel and the concrete, the number of bolts per square meter of bridge deck can reach tens to hundreds, the welding work amount and the material cost are greatly increased, and moreover, a reinforcing steel mesh is still required to be configured in the conventional design, the field binding operation is complicated, and the construction efficiency is low. In order to improve the above problems, some bridge deck forms employing section steel members for splicing have appeared in recent years. The method of connecting all prefabricated parts by using PBL (Perfobond Leiste) connecting pieces through perforated steel bars is applied to a certain extent. Although the method reduces the use of the bolts to a certain extent, the steel bar threading and fixing operation still needs to be carried out on site, the construction process is still complex, the requirement on the matching precision between the perforation and the steel bar is high, and the actual connection effect is difficult to ensure. More importantly, the problem of large field operation amount is not fundamentally solved by introducing the reinforcing steel bars, and meanwhile, quality hidden troubles such as non-compaction of pouring and the like are easy to occur in the concrete pouring process. Therefore, a novel composite bridge deck structure is urgently needed, complete prefabrication and modularization of components can be achieved, on-site welding and reinforcing steel bar operation are reduced to the greatest extent, construction efficiency is remarkably improved, comprehensive manufacturing cost is reduced on the premise that structural integrity and stress performance are guaranteed, and the composite bridge deck structure has excellent durability. Disclosure of Invention Aiming at the problems of large field welding workload, complicated binding of reinforcing steel bars, insufficient connection reliability and the like of the traditional steel-concrete combined bridge deck in the background art, the invention provides the reinforced-free composite bridge deck with the bidirectional buckle. The bridge deck realizes the rapid assembly of the prefabricated components in a unique mechanical connection mode, thoroughly avoids on-site welding and steel bar operation, and obviously improves the construction efficiency while ensuring the structural integrity. The reinforced-free composite bridge deck with the bidirectional buckles is characterized in that a completely prefabricated standardized component is adopted to realize quick connection through mechanical buckles. The structure comprises a plurality of U-shaped channel steels which are arranged side by side in a transverse direction of a bridge deck, a longitudinal limiting buckle for limiting longitudinal displacement, a transverse limiting buckle for limiting transverse displacement, and a concrete layer poured on a steel skeleton formed by the components. Further preferably, a reinforced-free composite deck slab with two-way buckles, comprising: The U-shaped steel groove comprises two side webs and a steel bottom plate at the lower part; the longitudinal limiting buckle is used for limiting the longitudinal displacement of the U-shaped steel; The transverse limiting buckle is used for limiting the transverse displacement of the U-shaped steel and is required to be opened at the joint of the transverse limiting buckle and the U-shaped steel and clamped into U-s