CN103114524A - Light type wave-shaped steel and high-strength activity powder concrete composite bridge panel - Google Patents

Abstract

Translated fromChinese

本发明公开了一种轻型波形钢-高强活性粉末混凝土组合桥面板，在波形钢底板(1)的内部凹处竖直设有剪力钉(3)，在波形钢底板(1)的内部顶面横桥向布置有与波形钢底板(1)的凸起部分焊接的横向加强钢筋(4)，在横向加强钢筋(4)上方铺设与其垂直的纵桥向主钢筋(5)，在波形钢底板(1)内浇注有将剪力钉(3)、横向加强钢筋(4)和纵桥向主钢筋(5)浇注在内的混凝土。本发明的结构简单、工厂化生产质量可控，且结构轻型、承载性能高，耐久性能好，可以作为轻型桥面板直接应用在各种不同跨径的新建桥梁中，也可以直接替换受损伤的旧桥面板，由于自重减轻，活性粉末混凝土耐久性好，可以增强结构承载能力与耐久性能，并通过工厂化生产缩短工期，加快建造或桥面板更换速度。

The invention discloses a light-duty corrugated steel-high-strength active powder concrete composite bridge deck, in which shear nails (3) are vertically arranged in the inner recess of the corrugated steel bottom plate (1), and on the inner top of the corrugated steel Horizontal reinforcing bars (4) welded to the convex part of the corrugated steel bottom plate (1) are arranged in the transverse bridge direction, and vertical bridge direction main reinforcing bars (5) are laid on the top of the transverse reinforcing bars (4). The base plate (1) is poured with concrete poured into the shear studs (3), the transverse reinforcement bars (4) and the main reinforcement bars (5) of the longitudinal bridge. The invention has simple structure, controllable factory production quality, light structure, high bearing performance and good durability, and can be directly applied as a light bridge deck in various new bridges with different spans, and can also directly replace damaged ones. Due to the light weight of the old bridge deck, the active powder concrete has good durability, which can enhance the structural bearing capacity and durability, shorten the construction period through factory production, and speed up the construction or bridge deck replacement speed.

Description

Translated fromChinese

轻型波形钢-高强活性粉末混凝土组合桥面板Light corrugated steel-high-strength reactive powder concrete composite bridge deck

技术领域technical field

本发明涉及一种桥面板，特别是涉及一种轻型波形钢—高强活性粉末混凝土组合桥面板。The invention relates to a bridge deck, in particular to a light corrugated steel-high-strength active powder concrete composite bridge deck.

背景技术Background technique

目前我国交通业桥梁工程处于新建与维修改造并重的时期。为了完善基础设施建设，国家投入了大量的资金进行桥梁建设。在桥梁的长期使用过程中，外界自然环境、超载等因素造成混凝土构件不同程度的损伤，而桥面板又是直接承受车辆荷载和环境的作用，是受超载、腐蚀、疲劳等不利因素影响最直接的构件；一些旧桥，由于桥梁荷载等级提高，需要通过加固主梁或拱肋或是降低结构恒载来提升承载等级，而采用轻型桥面板是降低结构恒载的手段之一；在旧桥改造和维修期间，希望加快改造和维修速度，尽可能缩短道路交通的封闭时间，取得最大的经济效益；在一些突发灾害事件中，快速修复受损桥梁，抢通道路是十分重要的，这样能有效的降低灾害损失。At present, my country's traffic industry bridge projects are in a period of equal emphasis on new construction and maintenance. In order to improve infrastructure construction, the state has invested a lot of money in bridge construction. During the long-term use of the bridge, the external natural environment, overload and other factors cause different degrees of damage to the concrete components, and the bridge deck directly bears the vehicle load and the environment, and is most directly affected by overload, corrosion, fatigue and other adverse factors. For some old bridges, due to the increase in the load level of the bridge, it is necessary to increase the load-bearing level by strengthening the main girder or arch rib or reducing the dead load of the structure, and the use of a light bridge deck is one of the means to reduce the dead load of the structure; in the old bridge During the reconstruction and maintenance period, it is hoped to speed up the reconstruction and maintenance speed, shorten the closure time of road traffic as much as possible, and obtain the greatest economic benefits; in some sudden disasters, it is very important to quickly repair the damaged bridge and rush to clear the road. Can effectively reduce disaster losses.

目前，已有的钢—混凝土组合桥面板的构造形式一般是将普通混凝土、钢纤维混凝土、浇注式沥青混凝土、沥青玛蹄脂混凝土(SMA)或环氧沥青混凝土浇注在平钢板上，为了控制结构刚度，已有的组合桥面板的厚度较厚，因此自重一般较大。此外，钢底板与混凝土或各种浇注式材料之间的界面粘结性能也是使用期间的关键问题，通常会出现界面粘结破坏、纵向疲劳裂缝、层间滑移、局部鼓包、脱层等病害。At present, the structure of the existing steel-concrete composite bridge deck is generally to pour ordinary concrete, steel fiber concrete, poured asphalt concrete, asphalt mastic concrete (SMA) or epoxy asphalt concrete on the flat steel plate. Structural rigidity, the thickness of the existing composite bridge deck is relatively thick, so the self-weight is generally large. In addition, the interface bonding performance between the steel base plate and concrete or various castable materials is also a key issue during the service period. Usually, there will be damage to the interface bond, longitudinal fatigue cracks, interlayer slippage, local bulging, delamination and other diseases .

新型高强活性粉末混凝土具有较高的强度，良好的耐腐蚀和抗疲劳性能。本发明将高强活性粉末混凝土与波形钢底板结合在一起，开发出轻质高强、施工便利、安全耐久、经济适用的新型波形钢—高强混凝土组合桥面板。The new high-strength reactive powder concrete has high strength, good corrosion resistance and fatigue resistance. The invention combines high-strength active powder concrete and corrugated steel bottom plate to develop a novel corrugated steel-high-strength concrete composite bridge deck that is lightweight, high-strength, convenient for construction, safe, durable, economical and applicable.

发明内容Contents of the invention

本发明所要解决的技术问题是提供一种能满足桥梁结构轻型化、建造和维修加固的快速化的轻型波形钢—高强活性粉末混凝土组合桥面板。The technical problem to be solved by the present invention is to provide a light-weight corrugated steel-high-strength active powder concrete composite bridge deck that can meet the requirements of light bridge structure and rapid construction, maintenance and reinforcement.

为了解决上述技术问题，本提供的轻型波形钢-高强活性粉末混凝土组合桥面板，包括钢底板和混凝土，所述的钢底板为波形钢底板，在所述的波形钢底板的内部凹处设有剪力钉，在所述的波形钢底板的内部顶面横桥向布置有与所述的波形钢底板的凸起部分焊接的横向加强钢筋，在所述的横向加强钢筋上方铺设与其垂直的纵桥向主钢筋，在所述的波形钢底板内浇注有将所述的剪力钉、横向加强钢筋和纵桥向主钢筋浇注在内的所述的混凝土。In order to solve the above-mentioned technical problems, the light corrugated steel-high-strength reactive powder concrete composite bridge deck provided herein includes a steel base plate and concrete, the steel base plate is a corrugated steel base plate, and a For shear studs, horizontal reinforcing bars welded to the raised part of the corrugated steel base plate are arranged on the inner top surface of the corrugated steel base plate in the transverse bridge direction, and longitudinal reinforcement bars perpendicular to it are laid above the transverse reinforcing bars. As for the main reinforcing bar towards the bridge, the concrete poured with the shear studs, the transverse reinforcing bars and the main reinforcing bars towards the longitudinal bridge is poured in the corrugated steel bottom plate.

所述的混凝土为高强活性粉末混凝土。The concrete is high-strength active powder concrete.

所述的波形钢底板内每间隔2米～3米设置有一道横隔板。The corrugated steel bottom plate is provided with a transverse partition every 2 meters to 3 meters.

所述的波形钢底板上的所述的剪力钉的高度超过所述的加强钢筋。The height of the shear studs on the corrugated steel bottom plate exceeds the reinforcement bars.

采用上述技术方案的轻型波形钢—高强活性粉末混凝土组合桥面板，本发明具有以下特点：The light-duty corrugated steel-high-strength reactive powder concrete composite bridge deck adopting the above-mentioned technical scheme has the following characteristics:

波形钢底板在工厂制作，作为高强活性粉末混凝土浇筑的模板使用，组合桥面板在工厂养护成形、因此便于保证质量，实现工地的快速、安全施工。The corrugated steel bottom plate is made in the factory and used as a formwork for high-strength reactive powder concrete pouring. The composite bridge deck is maintained and formed in the factory, so it is easy to ensure the quality and realize the rapid and safe construction on the construction site.

钢底板设计成波形形状，能提高底板在高强混凝土浇注时的抗弯、抗剪能力，减少变形；在使用阶段，这样的设计也能降低自重，提高此组合结构的抗弯抗剪性能。The steel bottom plate is designed in a corrugated shape, which can improve the bending and shearing resistance of the bottom plate when high-strength concrete is poured, and reduce deformation; in the use stage, this design can also reduce the self-weight and improve the bending and shearing performance of the composite structure.

波形钢底板每间隔2米～3米应设置一道横隔板，这样能加强波形钢底板的横向受力性能。The corrugated steel bottom plate should be provided with a transverse partition every 2 meters to 3 meters, which can strengthen the transverse force performance of the corrugated steel bottom plate.

波形钢底板上设置剪力钉，横向加强钢筋与波形钢底板的焊接处理，可以有效抵抗钢底板与高强混凝土的分离。同时，横向加强钢筋能提高波形钢底板的横向受力性能。Shear nails are set on the corrugated steel base plate, and the welding treatment of the transverse reinforcement bars and the corrugated steel base plate can effectively resist the separation of the steel base plate and the high-strength concrete. At the same time, the transverse reinforcement can improve the transverse force performance of the corrugated steel base plate.

将波形钢底板和高强活性粉末混凝土结合在一起，形成钢混组合结构，充分利用了高强混凝土的抗压、抗弯性能和钢的抗拉性能。The corrugated steel base plate and high-strength active powder concrete are combined to form a steel-concrete composite structure, which makes full use of the compressive and flexural properties of high-strength concrete and the tensile properties of steel.

具有良好的耐久性能，后期维护费用少。It has good durability and less post-maintenance cost.

综上所述，本发明是一种能满足桥梁结构轻型化、建造和维修加固的快速化的轻型波形钢—高强活性粉末混凝土组合桥面板，加工成型的波形钢底板作为混凝土浇注时的模板，结构成形后，波形钢底板与混凝土形成组合桥面板，共同受力。可广泛应用于各种不同跨径的新建桥梁中，也可以直接替换受损伤的旧桥面板，加速桥梁的建造和维修替换效率，并改善结构承载，提高结构耐久性。To sum up, the present invention is a lightweight corrugated steel-high-strength reactive powder concrete composite bridge deck that can meet the requirements of light bridge structure, rapid construction, maintenance and reinforcement. After the structure is formed, the corrugated steel base plate and concrete form a composite bridge deck, which bears the force together. It can be widely used in new bridges with different spans, and can also directly replace damaged old bridge decks, speed up bridge construction and maintenance and replacement efficiency, and improve structural load-bearing and structural durability.

附图说明Description of drawings

图1为本发明的横截面示意图。Figure 1 is a schematic cross-sectional view of the present invention.

图2为本发明的波形钢底板示意图。Fig. 2 is a schematic diagram of the corrugated steel bottom plate of the present invention.

图3为本发明的整体结构示意图。Fig. 3 is a schematic diagram of the overall structure of the present invention.

图中：1.波形钢底板，2.高强混凝土，3.剪力钉，4.加强钢筋，5.主筋、6.横隔板。In the figure: 1. Corrugated steel base plate, 2. High-strength concrete, 3. Shear nails, 4. Reinforcing steel bars, 5. Main bars, 6. Diaphragm.

具体实施方式Detailed ways

下面结合附图对本发明作进一步说明。The present invention will be further described below in conjunction with accompanying drawing.

如图1、图2和图3所示，在波形钢底板1的内部凹处设有剪力钉3，在波形钢底板1的内部顶面横桥向布置有与波形钢底板1的凸起部分焊接的横向加强钢筋4，在横向加强钢筋4上方铺设与其垂直的纵桥向主钢筋5，在波形钢底板1内浇注有将剪力钉3、横向加强钢筋4和纵桥向主钢筋5浇注在内的高强活性粉末混凝土2，其中，横向加强钢筋4和纵桥向主钢筋5的直径和布置密度，可根据组合桥面板的受力情况进行计算来确定，高强活性粉末混凝土2浇注后需在工厂进行高温养护。As shown in Fig. 1, Fig. 2 and Fig. 3, a shear stud 3 is provided in the inner recess of the corrugated steel bottom plate 1, and a protrusion corresponding to the corrugated steel bottom plate 1 is arranged in the transverse bridge direction on the inner top surface of the corrugated steel bottom plate 1. Partially weldedtransverse reinforcement bars 4 are laid on the top of thetransverse reinforcement bars 4 to lay vertical bridge direction main reinforcement bars 5 perpendicular to it, and pouring shear nails 3,transverse reinforcement bars 4 and longitudinal bridge direction main reinforcement bars 5 in the corrugated steel bottom plate 1 The high-strengthreactive powder concrete 2 poured in, wherein, the diameter and arrangement density of the transverse reinforcingsteel bar 4 and the longitudinal bridge main steel bar 5 can be determined according to the stress situation of the composite bridge deck. After the high-strengthreactive powder concrete 2 is poured High temperature curing is required in the factory.

作为本发明的一种改进，波形钢底板1内每间隔2米～3米设置有一道横隔板6。As an improvement of the present invention, a transverse partition 6 is arranged in the corrugated steel bottom plate 1 at intervals of 2 to 3 meters.

作为本发明的一种改进，波形钢底板1上的剪力钉3的高度超过加强钢筋4。As an improvement of the present invention, the height of the shear studs 3 on the corrugated steel bottom plate 1 exceeds that of thereinforcement bars 4 .

Claims (5)

Translated fromChinese

1.一种轻型波形钢-高强活性粉末混凝土组合桥面板，包括钢底板和混凝土，其特征是：所述的钢底板为波形钢底板(1)，在所述的波形钢底板(1)的内部凹处竖直设有剪力钉(3)，在所述的波形钢底板(1)的内部顶面横桥向布置有与所述的波形钢底板(1)的凸起部分焊接的横向加强钢筋(4)，在所述的横向加强钢筋(4)上方铺设与其垂直的纵桥向主钢筋(5)，在所述的波形钢底板(1)内浇注有将所述的剪力钉(3)、横向加强钢筋(4)和纵桥向主钢筋(5)浇注在内的所述的混凝土。1. a light corrugated steel-high-strength active powder concrete composite bridge deck, comprising steel base plate and concrete, is characterized in that: described steel base plate is corrugated steel base plate (1), in the described corrugated steel base plate (1) Shear studs (3) are vertically arranged in the inner recess, and horizontal studs welded with the convex part of the corrugated steel bottom plate (1) are arranged on the inner top surface of the corrugated steel bottom plate (1) in the transverse bridge direction. Reinforcing steel bar (4), above described transverse reinforcing steel bar (4), lay the longitudinal bridge direction main steel bar (5) perpendicular to it, in described corrugated steel bottom plate (1), be poured with described shear nail (3), horizontal reinforcing steel bar (4) and longitudinal bridge are poured into the described concrete of main steel bar (5).2.根据权利要求1所述的轻型波形钢-高强活性粉末混凝土组合桥面板，其特征是：所述的混凝土为高强活性粉末混凝土(2)。2. The light corrugated steel-high-strength reactive powder concrete composite bridge deck according to claim 1, characterized in that: said concrete is high-strength reactive powder concrete (2).3.根据权利要求1或2所述的轻型波形钢-高强活性粉末混凝土组合桥面板，其特征是：所述的波形钢底板(1)内每间隔2米～3米设置有一道横隔板(6)。3. The light-duty corrugated steel-high-strength reactive powder concrete composite bridge deck according to claim 1 or 2, characterized in that: the corrugated steel bottom plate (1) is provided with a transverse partition every 2 meters to 3 meters (6).4.根据权利要求1或2所述的轻型波形钢-高强活性粉末混凝土组合桥面板，其特征是：所述的波形钢底板(1)上的所述的剪力钉(3)的高度超过所述的加强钢筋(4)。4. The light corrugated steel-high-strength active powder concrete composite bridge deck according to claim 1 or 2, characterized in that: the height of the shear studs (3) on the corrugated steel base plate (1) exceeds Described reinforcing bar (4).5.根据权利要求3所述的轻型波形钢-高强活性粉末混凝土组合桥面板，其特征是：所述的波形钢底板(1)上的所述的剪力钉(3)的高度超过所述的加强钢筋(4)。5. The light corrugated steel-high-strength active powder concrete composite bridge deck according to claim 3, characterized in that: the height of the shear studs (3) on the corrugated steel base plate (1) exceeds the reinforcement bars (4).

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