Installation structure of assembled corrugated steel plate arch bridge abutment

Abstract

The utility model relates to an installation structure of an assembled corrugated steel plate arch bridge abutment, and relates to the field of bridge engineering, and particularly to an installation structure of an assembled corrugated steel plate arch bridge abutment. The utility model mainly consists of components such as a prefabricated abutment foundation, a prefabricated abutment body, a foot guard, a corrugated steel plate arch ring, a connecting angle steel, a connecting bolt, an anchor bolt, a built-in sleeve, a hoisting hole, a steel template, a cushion layer, a leveling layer, and a post-casting section. The prefabricated abutment foundation and the prefabricated abutment body are fixed on the cushion layer by the leveling layer, and the cushion layer, the leveling layer, the prefabricated abutment foundation, the prefabricated abutment body, and the steel template are used to form the outer template of the post-casting section, and the post-casting section is cast on site, and finally the installation of the assembled corrugated steel plate arch bridge abutment is completed. During construction, no welding connection is required, only a small amount of binding connection and a small amount of cement-based grouting material are needed to complete the installation of the assembled corrugated steel plate arch bridge abutment, and the utility model has the advantages of convenient installation, low-carbon construction, accurate positioning, and strong fault tolerance.

Description

Technical Field

[0001] The utility model relates to an installation structure of an assembled corrugated steel plate arch bridge abutment, relates to the field of bridge engineering, and particularly relates to an installation structure of an assembled corrugated steel plate arch bridge abutment. Background Art

[0002] The corrugated steel plate bridge and culvert structure has two major advantages: superior mechanical properties and considerable economic benefits, and has a high promotion value. At present, the application of corrugated steel plate structures in my country's highway, municipal and railway transportation projects is still in the early development stage. In municipal engineering, the existing municipal corrugated steel plate arch bridges all use cast-in-place abutments and piers. There are many problems such as large on-site construction workload, excessive carbon emissions, difficulty in ensuring quality, long construction period, high pressure to ensure traffic, and high cost. In order to adapt to high-quality development, we propose an installation structure for assembled corrugated steel plate arch bridge abutments to solve the above problems. Summary of the invention

[0003] The purpose of the utility model is to propose an installation structure for an assembled corrugated steel plate arch bridge abutment, which can reduce the amount of on-site concrete pouring work, shorten the construction period, improve construction accuracy, and ensure the construction quality and beautiful appearance of the corrugated steel plate arch bridge by prefabricating the abutment in advance.

[0004] The utility model is realized by the following technologies: the installation structure of the assembled corrugated steel plate arch bridge abutment is mainly composed of a cushion layer 1, a leveling layer 2, a prefabricated abutment foundation 3, a prefabricated abutment body 4, a foot guard 5, a corrugated steel plate arch ring 6, a connecting angle steel 7, a connecting bolt 8, an anchor bolt 9, a built-in sleeve 10, a lifting hole 11, a steel formwork 12, abutment body vertical steel bars 13, abutment body horizontal steel bars 14, foundation vertical steel bars 15, foundation horizontal steel bars 16, a post-casting section 17 and other components.

[0005] The prefabricated abutment foundation 3 and prefabricated abutment body 4 are prefabricated in sections in advance in the prefabrication plant, each section is 2700 mm long, the seam width between sections is 300 mm, the prefabricated abutment foundation 3 is 1740 mm wide, and the prefabricated abutment body 4 is 540 mm wide.

[0006] The built-in sleeve 10 is arranged on the side walls of the prefabricated abutment foundation 3 and the prefabricated abutment body 4. The built-in sleeve 10 is circular, with a diameter of 16 mm and a length of 170 mm.

[0007] The hoisting holes 11 are arranged on the body of the prefabricated abutment body 4. The hoisting holes 11 are circular, with a diameter of 60 mm and a spacing of 2200 mm. The hole-forming material is UPVC pipe, and the distance to the top surface of the prefabricated abutment body 4 is 500 mm.

[0008] The post-casting section 17 is cast with cement-based grouting material and has a width of 300 mm.

[0009] The steel formwork 12 constitutes the lateral outer formwork of the post-casting section 17, and the thickness of the steel formwork 12 is 8 mm and the width is 700 mm.

[0010] When the post-casting section 17 is cast on site, the anchor bolts 9, the vertical reinforcements 13 of the abutment body, and the vertical reinforcements 15 of the foundation should be installed in advance, and the steel formwork 12, the precast abutment foundation 3, the precast abutment body 4, and the cushion layer 1 together constitute the outer formwork of the post-casting section 17.

[0011] The leveling layer 2 is made of dry hard cement mortar with a thickness of 20 mm.

[0012] The beneficial effects of the utility model are that the corrugated steel plate arch bridge abutments are prefabricated in the prefabrication plant in advance, the abutments are accurately hoisted into place using the reserved hoisting holes, and the prefabricated abutments, cushion layers, steel formworks and other components are used to form the outer formwork of the post-cast section at the construction site. A large amount of on-site wet concrete work is not required, on-site welding of steel bars is avoided, the use of concrete formworks on the construction site is greatly reduced, low-carbon green construction is achieved, and it has the advantages of quick installation, accurate positioning, strong fault tolerance, low cost, and ensured project quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional schematic diagram of the utility model;

[0014] Figure 2 for Figure 1 AA cross-section diagram.

[0015] In the figure: 1- cushion layer, 2- leveling layer, 3- precast abutment foundation, 4- precast abutment body, 5- foot guard, 6- corrugated steel plate arch ring, 7- connecting angle steel, 8- connecting bolt, 9- anchor bolt, 10- built-in sleeve, 11- lifting hole, 12- steel formwork, 13- vertical steel bars of abutment body, 14- horizontal steel bars of abutment body, 15- vertical steel bars of foundation, 16- horizontal steel bars of foundation, 17- post-casting section. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present utility model are described in detail below.

[0017] At the construction site, the foundation is first treated. After the foundation bearing capacity test is passed, the cushion layer 1 is constructed on site with a thickness of 200mm and a width of 2140mm. The material is concrete. Only after the concrete strength of the cushion layer 1 meets the requirements can the next step of construction be carried out.

[0018] The prefabricated abutment foundation 3 and the prefabricated abutment body 4 are prefabricated in sections in advance in the prefabrication plant. It should be noted that the built-in sleeves 10 are reserved on the side walls of the prefabricated abutment foundation 3 and the prefabricated abutment body 4, and the lifting holes 11 are reserved on the body of the prefabricated abutment body 4.

[0019] The length of each section of the precast abutment foundation 3 and the precast abutment body 4 is 2700 mm, the width of the precast abutment foundation 3 is 1740 mm, and the width of the precast abutment body 4 is 540 mm.

[0020] The steel template 12 is made in advance, with a thickness of 8mm and a width of 700mm. The shape of the steel template 12 should be consistent with the shape of the prefabricated abutment foundation 3 and the prefabricated abutment body 4 to ensure that it is tightly fitted and has no gaps after installation. When making the steel template 12, a hole corresponding to the position of the built-in sleeve 10 should be reserved on the steel plate, and the hole diameter is 16mm.

[0021] The prefabricated abutment foundation 3 and the prefabricated abutment body 4 that have passed the acceptance inspection are transported to the construction site, and the prefabricated abutment foundation 3 and the prefabricated abutment body 4 are hoisted to a temporary storage location using small hoisting equipment. During hoisting, the steel wire rope passes through the hoisting hole 11, and hole protection measures are taken to avoid damaging the hole concrete.

[0022] After the concrete strength of the cushion layer 1 reaches the requirement, the leveling layer 2 is applied. The leveling layer 2 uses dry hard cement mortar with a thickness of 20 mm. Then the prefabricated abutment foundation 3 and the prefabricated abutment body 4 are hoisted onto the leveling layer 2 to ensure a close fit without hollows.

[0023] After the precast abutment foundation 3 and the precast abutment body 4 are installed in place and passed the inspection, the vertical reinforcement 13 of the abutment body, the vertical reinforcement 15 of the foundation and the anchor bolts 9 are installed within the scope of the post-casting section 17, and the steel formwork 12 is attached to the outer surface of the precast abutment foundation 3 and the precast abutment body 4. Bolts with a diameter of 16 mm are screwed into the holes corresponding to the built-in sleeve 10 and the steel formwork 12 to form the lateral outer formwork of the post-casting section 17. Then, the cement-based grouting material within the scope of the post-casting section 17 is poured on site and the cement-based grouting material of the post-casting section 17 is cured. The next step of construction can be carried out only after the strength reaches the requirement.

[0024] Install the connecting angle steel 7 at the corresponding position of the anchor bolt 9, install the corrugated steel plate arch ring 6 at the corresponding position of the connecting bolt 8, cast the foot guard 5 on site after passing the acceptance, and cure the concrete of the foot guard 5 to complete the installation of the assembled corrugated steel plate arch bridge abutment.

Claims

1. An installation structure for an assembled corrugated steel plate arch bridge abutment, characterized in that: It includes a cushion layer (1), a leveling layer (2), a prefabricated abutment foundation (3), a prefabricated abutment body (4), a foot guard (5), a corrugated steel plate arch ring (6), a connecting angle steel (7), a connecting bolt (8), an anchor bolt (9), an internal sleeve (10), a lifting hole (11), a steel formwork (12), abutment body vertical steel bars (13), foundation vertical steel bars (15), and a post-casting section (17); A leveling layer (2) is arranged above the cushion layer (1), and a prefabricated abutment foundation (3) and a prefabricated abutment body (4) are arranged above the leveling layer (2); each section of the prefabricated abutment foundation (3) and the prefabricated abutment body (4) is 2700 mm long, the prefabricated abutment foundation (3) is 1740 mm wide, and the prefabricated abutment body (4) is 540 mm wide; built-in sleeves are arranged on the side walls of the prefabricated abutment foundation (3) and the prefabricated abutment body (4) (10), the built-in sleeve (10) is circular, with a diameter of 16 mm and a length of 170 mm; the prefabricated abutment body (4) is provided with a hoisting hole (11), which is circular, with a diameter of 60 mm and a spacing of 2200 mm. The hole-forming material is a UPVC pipe, and the distance to the top surface of the prefabricated abutment body (4) is 500 mm; the outer surfaces of the prefabricated abutment foundation (3) and the prefabricated abutment body (4) are attached A steel template (12) is provided, the shape of the steel template (12) is consistent with the shape of the precast abutment foundation (3) and the precast abutment body (4), the thickness of the steel template (12) is 8 mm, and the width is 700 mm; bolts with a diameter of 16 mm are screwed into the holes of the built-in sleeve (10) and the steel template (12), thereby forming a lateral outer template of the post-cast section (17); the cushion layer (1), the precast abutment foundation (3), the precast abutment body (4), the steel template (12) and the anchor bolts (9), the body vertical steel bars (13), and the foundation vertical steel bars (15) together constitute the outer template of the post-cast section (17); wherein a connecting angle steel (7) is provided on the upper part of the anchor bolt (9), a connecting bolt (8) is provided in the vertical direction of the connecting angle steel (7), and a corrugated steel plate arch ring (6) is installed at the corresponding position of the connecting bolt (8); a foot guard (5) is cast above the precast abutment body (4).

2. The installation structure of an assembled corrugated steel plate arch bridge abutment according to claim 1 is characterized by: The leveling layer (2) is made of dry hard cement mortar with a thickness of 20 mm.

3. The installation structure of the assembled corrugated steel plate arch bridge abutment according to claim 1 is characterized by: The post-casting section (17) is cast using cement-based grouting material and has a width of 300 mm.

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