Simply supported beam of post-tensioned prestressed concrete railroad bridge

Abstract

The utility model discloses a post-tensioned prestressed concrete railroad bridge simply-supported beam which comprises a simply-supported beam body, four matching holes are formed in the simply-supported beam body and are divided into two groups, the two groups of matching holes are symmetrically formed relative to the simply-supported beam body, a fixing sleeve is fixedly connected to the interior of each matching hole, and the fixing sleeve is fixedly connected to the interior of each matching hole. A supporting column is arranged in the fixing sleeve, the lower end of the supporting column is fixedly connected with a limiting column, and the end, close to the center of the simply supported beam body, of the limiting column is fixedly connected with a limiting sleeve. In the utility model, the three pre-stressed plates are all made of corrugated steel materials, so that the pre-stress for improving the main body of the simply supported beam can be effectively provided, and the simply supported beam can be effectively reinforced, therefore, the problems of sinking, cracking and the like of old bridges and dangerous bridges can be solved, meanwhile, the bending-resistant and shearing-resistant bearing capacity of the bridges is improved, and the reinforcing effect is obvious.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a post-tensioning prestressed concrete railway bridge simply supported beam. Background Art

[0002] A simply supported beam bridge is a beam bridge with a beam supported at both ends on piers as the main load-bearing structure. It is a statically determinate structure. It is the earliest and most widely used type of beam bridge. It is suitable for various geological conditions, has a simple structure, is easy to make into standardized and assembled components, and is convenient to manufacture and install. It is the most widely used beam bridge.

[0003] Due to the increasing traffic pressure and the increasing service life of existing bridges, a large number of simply supported beam bridges on my country's highways and local roads have seen a continuous reduction in prestress due to long-term use, resulting in a large number of old and dangerous bridges, leading to a significant reduction in simply supported beam bridges. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a post-tensioned prestressed concrete railway bridge simply supported beam, the device is provided with three prestressed plates, the three prestressed plates are arranged between four pillars, and are all made of corrugated steel materials, which can effectively provide prestressing to improve the main body of the simply supported beam, and effectively reinforce the simply supported beam, so as to solve the problems of sinking and cracks of the bridge body of old bridges and dangerous bridges, and at the same time improve the bending and shear bearing capacity of the bridge, and the reinforcement effect is remarkable;

[0005] The device is provided with a corrugated pipe, spiral ribs and an anchor plate. The anchor plate can support the corrugated pipe. The setting of the spiral ribs and the corrugated pipe can effectively increase the prestress of the simply supported beam, thereby increasing the service life of the simply supported beam bridge.

[0006] The utility model also provides a post-tensioned prestressed concrete railway bridge simply supported beam, comprising: a simply supported beam body, four matching holes are arranged inside the simply supported beam body, the four matching holes are divided into two groups, the two groups of matching holes are symmetrically arranged about the simply supported beam body, each matching hole is fixedly connected to a fixing sleeve inside, a pillar is arranged inside the fixing sleeve, the lower end of the pillar is fixedly connected to a limiting column, one end of the limiting column close to the center of the simply supported beam body is fixedly connected to the limiting sleeve, three limiting grooves are arranged on one side of the limiting sleeve close to the center of the simply supported beam body, and the limiting sleeve is installed with a first prestressed plate, a second prestressed plate and a third prestressed plate through the limiting grooves;

[0007] The left and right walls of the simply supported beam body are both fixedly connected with two anchor plates, and the anchor plates on the left and right walls correspond to each other one by one. A corrugated tube is fixedly connected between the two anchor plates, and a plurality of spiral ribs are arranged inside the corrugated tube, and the spiral ribs pass through the anchor plates on both sides thereof.

[0008] According to the post-tensioned prestressed concrete railway bridge simply supported beam, the upper side wall of each pillar is fixedly connected with a limit plate for supporting the pillar 2, the limit plate cooperates with the upper side wall of the fixed sleeve, and the limit plate is located inside the upper side wall of the simply supported beam body.

[0009] According to the post-tensioned prestressed concrete railway bridge simply supported beam, the outer side wall of the fixing sleeve is fixedly connected to the limiting side edge, and the limiting side edge and the fixing sleeve are made by an integrated molding technology, thereby improving the connection strength between the fixing sleeve 101 and the limiting side edge 102.

[0010] According to the post-tensioned prestressed concrete railway bridge simply supported beam, the first prestressed plate, the second prestressed plate and the third prestressed plate are all made of corrugated steel material, thereby increasing the prestress of the prestressed plate.

[0011] According to the post-tensioned prestressed concrete railway bridge simply supported beam, the first prestressed plate, the second prestressed plate and the third prestressed plate are all arranged between four pillars.

[0012] According to the post-tensioned prestressed concrete simply supported beam of a railway bridge, the curvatures of the first prestressed plate, the second prestressed plate and the third prestressed plate decrease successively, which can solve the problems of bridge body sinking and cracks in old and dangerous bridges, and at the same time improve the bending and shear bearing capacity of the bridge, with a significant reinforcement effect.

[0013] According to the post-tensioned prestressed concrete railway bridge simply supported beam, the support column, the limit column and the limit sleeve are made by an integrated molding technology, thereby improving the connection strength among the three.

[0014] According to the post-tensioned prestressed concrete railway bridge simply supported beam, the corrugated tubes are distributed in a sinusoidal shape inside the simply supported beam body, thereby increasing the prestress of the corrugated tubes 601 .

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0017] Figure 1This is a structural schematic diagram of a post-tensioned prestressed concrete railway bridge simply supported beam of the utility model;

[0018] Figure 2 This is a schematic diagram of the interior of a post-tensioned prestressed concrete railway bridge simply supported beam of the utility model;

[0019] Figure 3 It is a top view schematic diagram of a post-tensioned prestressed concrete railway bridge simply supported beam of the utility model;

[0020] Figure 4 The utility model is a cross-sectional schematic diagram of a post-tensioned prestressed concrete railway bridge simply supported beam.

[0021] Legend:

[0022] 1. Simply supported beam body; 101. Fixed sleeve; 102. Limiting side edge; 2. Pillar; 201. Limiting column; 202. Limiting sleeve; 2021. Limiting groove; 203. Limiting plate; 3. First prestressed plate; 4. Second prestressed plate; 5. Third prestressed plate; 6. Anchor plate; 601. Corrugated pipe; 602. Spiral reinforcement. DETAILED DESCRIPTION

[0023] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0024] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] Reference Figure 1-4The utility model embodiment is a post-tensioned prestressed concrete railway bridge simply supported beam, which includes a simply supported beam body 1, and four matching holes are arranged inside the simply supported beam body 1. The four matching holes are divided into two groups, and the two groups of matching holes are symmetrically arranged about the simply supported beam body 1. The inside of each matching hole is fixedly connected to a fixing sleeve 101, and the outer wall of the fixing sleeve 101 is fixedly connected to a limiting side edge 102. The limiting side edge 102 and the fixing sleeve 101 are made of an integrated molding technology, which improves the connection strength of the fixing sleeve 101 and the limiting side edge 102.

[0026] The fixing sleeve 101 is provided with pillars 2 inside. The upper side wall of each pillar 2 is fixedly connected with a limit plate 203 for supporting the pillar 2. The limit plate 203 cooperates with the upper side wall of the fixing sleeve 101. The limit plate 203 is located inside the upper side wall of the simply supported beam body 1.

[0027] The lower end of the pillar 2 is fixedly connected to the limiting column 201, and one end of the limiting column 201 close to the center of the simply supported beam body 1 is fixedly connected to the limiting sleeve 202. The limiting sleeve 202 is provided with three limiting grooves 2021 on one side close to the center of the simply supported beam body 1. The limiting sleeve 202 is installed with the first prestressed plate 3, the second prestressed plate 4 and the third prestressed plate 5 through the limiting grooves 2021. The first prestressed plate 3, the second prestressed plate 4 and the third prestressed plate 5 are all made of corrugated steel material to improve the prestress of the prestressed plate. The first prestressed plate 3, the second prestressed plate 4 and the third prestressed plate 5 are all arranged between the four pillars 2. The curvatures of the first prestressed plate 3, the second prestressed plate 4 and the third prestressed plate 5 decrease successively, which can solve the problems of sinking and cracks in old bridges and dangerous bridges, and at the same time improve the bending and shear bearing capacity of the bridge, and the reinforcement effect is remarkable.

[0028] The left and right walls of the simply supported beam body 1 are fixedly connected with two anchor plates 6, and the anchor plates 6 on the left and right walls correspond to each other one by one. A corrugated tube 601 is fixedly connected between the two anchor plates 6, and a plurality of spiral ribs 602 are arranged inside the corrugated tube 601, and the spiral ribs 602 pass through the anchor plates 6 on both sides thereof. The pillar 2, the limit column 201 and the limit sleeve 202 are made of one-piece molding technology to improve the connection strength among the three. The corrugated tube 601 is sinusoidally distributed inside the simply supported beam body 1 to improve the prestress of the corrugated tube 601.

[0029] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A post-tensioned prestressed concrete railway bridge simply supported beam, characterized in that: include: A simply supported beam body (1), wherein four matching holes are arranged inside the simply supported beam body (1), and the four matching holes are divided into two groups. The two groups of matching holes are symmetrically arranged about the simply supported beam body (1), and the interior of each matching hole is fixedly connected to a fixing sleeve (101). The interior of the fixing sleeve (101) is provided with a pillar (2), and the lower end of the pillar (2) is fixedly connected to a limiting column (201), and one end of the limiting column (201) close to the center of the simply supported beam body (1) is fixedly connected to a limiting sleeve (202), and three limiting grooves (2021) are arranged on one side of the limiting sleeve (202) close to the center of the simply supported beam body (1), and the limiting sleeve (202) is installed with a first prestressed plate (3), a second prestressed plate (4) and a third prestressed plate (5) through the limiting grooves (2021); The left side wall and the right side wall of the simply supported beam body (1) are both fixedly connected with two anchor plates (6), the anchor plates (6) on the left side wall and the right side wall correspond to each other one by one, a corrugated tube (601) is fixedly connected between the two anchor plates (6), a plurality of spiral ribs (602) are arranged inside the corrugated tube (601), and the spiral ribs (602) penetrate the anchor plates (6) on both sides thereof.

2. A post-tensioned prestressed concrete railway bridge simply supported beam according to claim 1, characterized in that: The upper side wall of each support (2) is fixedly connected to a limit plate (203), the limit plate (203) cooperates with the upper side wall of the fixing sleeve (101), and the limit plate (203) is located inside the upper side wall of the simply supported beam body (1).

3. A post-tensioned prestressed concrete railway bridge simply supported beam according to claim 1, characterized in that: The outer side wall of the fixing sleeve (101) is fixedly connected to a limiting side edge (102), and the limiting side edge (102) and the fixing sleeve (101) are made by an integral molding technology.

4. A post-tensioned prestressed concrete railway bridge simply supported beam according to claim 1, characterized in that: The first prestressed plate (3), the second prestressed plate (4) and the third prestressed plate (5) are all made of corrugated steel material.

5. The post-tensioned prestressed concrete railway bridge simply supported beam according to claim 1, characterized in that: The first prestressed plate (3), the second prestressed plate (4) and the third prestressed plate (5) are all arranged between four pillars (2).

6. A post-tensioned prestressed concrete railway bridge simply supported beam according to claim 1, characterized in that: The curvatures of the first prestressed plate (3), the second prestressed plate (4) and the third prestressed plate (5) decrease in sequence.

7. The post-tensioned prestressed concrete railway bridge simply supported beam according to claim 1, characterized in that: The support column (2), the limiting column (201) and the limiting sleeve (202) are manufactured using an integrated molding technology.

8. The post-tensioned prestressed concrete railway bridge simply supported beam according to claim 1, characterized in that: The bellows (601) are distributed in a sinusoidal shape inside the simply supported beam body (1).

Images