CN219343766U

CN219343766U - Reinforced subway prestress beam body

Info

Publication number: CN219343766U
Application number: CN202320808626.XU
Authority: CN
Inventors: 刘文珂; 陆民; 刘海泉; 杜振华; 王超
Original assignee: Tianjin No4 Municipal Building Engineering Co ltd; TIANJIN URBAN CONSTRUCTION GROUP CO Ltd
Current assignee: Tianjin No4 Municipal Building Engineering Co ltd; TIANJIN URBAN CONSTRUCTION GROUP CO Ltd
Priority date: 2023-04-13
Filing date: 2023-04-13
Publication date: 2023-07-14
Anticipated expiration: 2033-04-13

Abstract

The utility model belongs to the technical field of safety helmets, in particular to a reinforced subway prestressed girder body, which comprises a prestressed concrete girder, wherein a prestressed duct is formed in the prestressed concrete girder, prestressed ribs are arranged in the prestressed duct, the left end of the prestressed duct is connected with a plugging assembly in a clamping manner, and the right end of the prestressed duct is connected with a sealing assembly in a clamping manner; the sealing assembly comprises a second blocking head, a fixing plate, a blocking cover, a second fixing bolt, a grouting pipe and a sealing plug, wherein the second blocking head is connected to the right end of the prestressed duct in a clamping mode. In the use process of the subway prestressed girder, the end of the prestressed tendon is clamped and fixed in the first blocking head while one end of the prestressed duct is sealed through the first blocking head, and meanwhile, the prestressed tendon is clamped and fixed in a matched mode by matching with the second blocking head, so that the prestressed tendon is convenient to limit and fix, and the dislocation condition of the prestressed tendon caused by the grouting process is reduced.

Description

Reinforced subway prestress beam body

Technical Field

The utility model relates to the technical field of subway prestress beam bodies, in particular to a reinforced subway prestress beam body.

Background

Prestress beam, pre-applying force to the beam to make it generate negative bending moment in the midspan to partially offset positive bending moment of the beam in use, prestress concrete beam: the method comprises the steps of pre-applying a force to the beam, which causes the beam to generate a negative bending moment in the midspan, so as to partially offset the positive bending moment of the beam in use, and pre-stressing the concrete structure: the method avoids the premature occurrence of cracks of the reinforced concrete structure, fully utilizes high-strength steel bars and high-strength concrete, and can be said to ensure that the structural member generates precompression to reduce or offset the concrete tensile force caused by the load before the structural member is loaded, thereby ensuring that the tensile stress of the structural member is not large and even is in a compression state.

CN207538323U reinforced subway prestressed girder, which is provided with the reinforced subway prestressed girder, and is characterized in that insulating and reinforcing slurry is filled into the inner cavity of the prestressed duct cavity 3 through the reserved reinforcing hole 4; the insulating and reinforcing slurry forms a solid insulating protective layer 5 at normal temperature, protects the prestressed tendons from corrosion, and improves the durability of the structure. The reinforced subway prestress beam body provided by the utility model has the technical advantages of simple structure, convenience in manufacturing, stable and reliable structure, durability and the like.

In the actual use process, the grouting material in the prestressed beam body is easy to flow out due to the hydraulic pressure in the grouting process of the prestressed duct, and the grouting effect in the prestressed duct is affected, so that the sealing and sealing performance of the grouting material in the prestressed duct is ensured.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides a reinforced subway prestressed girder body, which has the characteristic of plugging tightness of grouting liquid in a prestressed duct.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the reinforced subway prestressed beam body comprises a prestressed concrete beam, wherein a prestressed duct is formed in the prestressed concrete beam, prestressed tendons are arranged in the prestressed duct, the left end of the prestressed duct is connected with a plugging assembly in a clamping manner, and the right end of the prestressed duct is connected with a sealing assembly in a clamping manner;

the sealing assembly comprises a second blocking head, a fixing plate, a blocking cover, a second fixing bolt, a grouting pipe and a sealing plug, wherein the second blocking head is connected to the right end of the prestressed duct in a clamping mode, the fixing plate is fixedly sleeved on the outer side of the second blocking head, the blocking cover is attached to the outer side of the second blocking head in a fitting mode, the second fixing bolt is connected to the surface of the blocking cover in a threaded mode, the grouting pipe is fixedly connected to the inner portion of the second blocking head, and the sealing plug is connected to the end head of the grouting pipe in a clamping mode.

As a preferable technical scheme of the reinforced subway prestress beam body, one end of the grouting pipe is communicated with the inner cavity of the prestress pore canal, and the other end of the grouting pipe is connected with the sealing plug in a clamping manner.

As a preferable technical scheme of the reinforced subway prestress beam body, the outer side surface of the plugging cover is provided with a threaded cavity, the threaded cavity is in threaded connection with a threaded column fixedly connected with the right side of the sealing plug, and the right end surface of the threaded column is provided with a straight groove.

As a preferable technical scheme of the reinforced subway prestress beam body, the number of the second fixing bolts is a plurality, and the tail ends of the second fixing bolts sequentially penetrate through the plugging cover and the fixing plate to be in threaded connection with the surface of the prestress concrete beam.

As a preferable technical scheme of the reinforced subway prestressed girder body, the plugging assembly comprises a first plugging head, a plugging plate and a first fixing bolt, wherein the first plugging head is connected in a clamping manner in an inner cavity of a prestressed duct, the left end of the first plugging head is fixedly connected with the plugging plate, and the plugging plate is fixedly connected with a prestressed concrete girder through the first fixing bolt.

As a preferable technical scheme of the reinforced subway prestressed girder body, the first blocking head is connected with one end of the prestressed rib in a clamping way, the other end of the prestressed rib penetrates through the second blocking head, and the end head of the prestressed rib is connected with the side surface of the blocking cover in a clamping way.

Compared with the prior art, the utility model has the beneficial effects that:

in the use process of the subway prestressed girder, the end of the prestressed tendon is clamped and fixed in the first blocking head while one end of the prestressed duct is sealed through the first blocking head, and meanwhile, the prestressed tendon is clamped and fixed in a matched mode by matching with the second blocking head, so that the prestressed tendon is convenient to limit and fix, and the dislocation condition of the prestressed tendon caused by the grouting process is reduced.

In the use process of the subway prestressed girder, the right end of the prestressed duct is sealed through the second blocking head, meanwhile, the grouting pipe penetrates through the side surface of the second blocking head, grouting liquid is conveniently added into the cavity of the prestressed duct through the grouting pipe, the blocking cover is covered on the surface of the second blocking head, the end head of the grouting pipe added with grouting liquid is sealed through the sealing plug, the blocking cover and the fixing plate are fixed on the surface of the prestressed concrete girder through the second fixing bolt, the fixation stability is improved, the sealing plug is ensured to be stably sealed in the grouting pipe through threaded connection of the threaded column and the threaded cavity, and the grouting sealing effect is improved.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is an enlarged schematic view of FIG. 1 at A;

FIG. 3 is a schematic overall cross-sectional view of the present utility model;

fig. 4 is a schematic view of the right side surface of the second plugging plate.

In the figure: 1. a prestressed concrete beam; 2. a prestressed duct; 3. prestress rib; 4. a first blocking head; 5. a plugging plate; 6. a first fixing bolt; 7. a second blocking head; 8. a fixing plate; 9. a blocking cover; 10. a second fixing bolt; 11. grouting pipes; 12. a sealing plug; 13. a threaded column; 1301. a straight slot.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples

Referring to fig. 1-4, the present utility model provides the following technical solutions: the reinforced subway prestressed girder comprises a prestressed concrete girder 1, wherein a prestressed duct 2 is formed in the prestressed concrete girder 1, a prestressed rib 3 is arranged in the prestressed duct 2, the left end of the prestressed duct 2 is connected with a plugging component in a clamping manner, and the right end of the prestressed duct 2 is connected with a sealing component in a clamping manner;

in one embodiment, as shown in fig. 2 and 3, specifically, the sealing assembly includes a second blocking head 7, a fixing plate 8, a blocking cover 9, a second fixing bolt 10, a grouting pipe 11 and a sealing plug 12, the second blocking head 7 is connected to the right end of the prestressed duct 2 in a clamping manner, the fixing plate 8 is fixedly sleeved on the outer side of the second blocking head 7, the blocking cover 9 is attached to the outer side of the second blocking head 7, the second fixing bolt 10 is connected to the surface of the blocking cover 9 in a threaded manner, the grouting pipe 11 is fixedly connected to the second blocking head 7, and the sealing plug 12 is connected to the end head of the grouting pipe 11 in a clamping manner.

In this embodiment, seal the prestressing force pore 2 right-hand member through second shutoff head 7, grout pipe 11 runs through second shutoff head 7 side surface simultaneously, be convenient for carry out grout liquid to prestressing force pore 2 inner chamber through grout pipe 11 and add, cover shutoff lid 9 at second shutoff head 7 surface, the grout pipe 11 end after will adding the grout liquid is sealed through sealing plug 12, fix shutoff lid 9 and fixed plate 8 on prestressing force concrete beam 1 surface through second fixing bolt 10, improve fixedly stable, through screw thread post 13 and screw thread chamber threaded connection, guarantee sealing plug 12 stable seal in grout pipe 11, improve the grout sealing effect.

In one embodiment, referring to fig. 3 and fig. 4, specifically, one end of the grouting pipe 11 is communicated with the inner cavity of the prestressed duct 2, and the other end of the grouting pipe 11 is in snap connection with the sealing plug 12.

In this embodiment, grouting and plugging of the grouting pipe 11 is facilitated.

In one embodiment, as shown in fig. 2 and fig. 3, specifically, the outer surface of the plugging cover 9 is provided with a threaded cavity, the threaded cavity is in threaded connection with a threaded column 13 fixedly connected to the right side of the sealing plug 12, and a linear groove 1301 is formed on the right end surface of the threaded column 13.

In this embodiment, the worker inserts the tool into the straight groove 1301, and drives the screw column 13 to rotate, thereby facilitating connection and separation of the screw column 13 and the screw cavity.

In one embodiment, as shown in fig. 3, specifically, the number of the second fixing bolts 10 is several, and the ends of the several second fixing bolts 10 sequentially penetrate through the plugging cover 9 and the fixing plate 8 to be in threaded connection with the surface of the prestressed concrete beam 1, so that the plugging cover 9 and the fixing plate 8 are fixed on the surface of the prestressed concrete beam 1.

In one embodiment, as shown in fig. 1 and 3, specifically, the plugging assembly includes a first plug 4, a plug board 5 and a first fixing bolt 6, where the first plug 4 is connected to the inner cavity of the prestressed duct 2 in a clamping manner, the left end of the first plug 4 is fixedly connected with the plug board 5, and the plug board 5 is fixedly connected with the prestressed concrete beam 1 through the first fixing bolt 6.

In this embodiment, through with the sealed block of first shutoff head 4 in prestressing force pore 2 end inner chamber, under the cooperation of shutoff board 5, be convenient for improve the shutoff effect, simultaneously under the fixed action of through first fixing bolt 6, be convenient for stably fix the shutoff board 5 of shutoff, first shutoff head 4 is stable to be placed, improves sealed effect.

In one embodiment, referring to fig. 3, specifically, the first blocking head 4 is connected with one end of the tendon 3 in a clamping manner, the other end of the tendon 3 penetrates through the second blocking head 7, and the end of the tendon 3 is connected with the side surface of the blocking cover 9 in a clamping manner.

In this embodiment, when sealing one end of the prestressed duct 2 through the first blocking head 4, the end head of the prestressed tendon 3 is clamped and fixed in the first blocking head 4, and meanwhile, the second blocking head 7 is matched and clamped with the prestressed tendon 3, so that the prestressed tendon 3 is convenient to limit and fix, and the dislocation condition of the prestressed tendon 3 caused by the grouting process is reduced.

The utility model has the following application flow and working principle: when the grouting device is used, firstly, one end of a prestressed duct 2 is sealed through the first blocking head 4, the end head of the prestressed rib 3 is clamped and fixed in the first blocking head 4, meanwhile, the second blocking head 7 is matched and clamped with the prestressed rib 3, the prestressed rib 3 is convenient to limit and fix, the dislocation situation of the prestressed rib 3 caused by the grouting process is reduced, the right end of the prestressed duct 2 is sealed through the second blocking head 7, meanwhile, the grouting pipe 11 penetrates through the side surface of the second blocking head 7, grouting liquid is conveniently added into the inner cavity of the prestressed duct 2 through the grouting pipe 11, the blocking cover 9 is covered on the surface of the second blocking head 7, the end head of the grouting pipe 11 after grouting liquid addition is sealed through the sealing plug 12, the blocking cover 9 and the fixing plate 8 are fixed on the surface of the prestressed concrete beam 1 through the second fixing bolt 10, the fixing stability is improved, the sealing plug 12 is ensured to be stably sealed in the grouting pipe 11 through the threaded column 13 and the threaded cavity, and the grouting sealing effect is improved.

The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The utility model provides a reinforcement type subway prestressing force roof beam body, includes prestressed concrete roof beam (1), its characterized in that: a prestressed duct (2) is formed in the prestressed concrete beam (1), a prestressed rib (3) is arranged in the prestressed duct (2), a plugging component is connected with the left end of the prestressed duct (2) in a clamping manner, and a sealing component is connected with the right end of the prestressed duct (2) in a clamping manner;

the sealing assembly comprises a second blocking head (7), a fixing plate (8), a blocking cover (9), a second fixing bolt (10), a grouting pipe (11) and a sealing plug (12), wherein the second blocking head (7) is connected to the right end of a prestressed duct (2) in a clamping mode, the fixing plate (8) is fixedly sleeved on the outer side of the second blocking head (7), the blocking cover (9) is attached to the outer side of the second blocking head (7), the second fixing bolt (10) is connected to the surface of the blocking cover (9) in a threaded mode, the grouting pipe (11) is fixedly connected to the inner portion of the second blocking head (7), and the sealing plug (12) is connected to the end head of the grouting pipe (11) in a clamping mode.

2. A reinforced subway prestressed girder according to claim 1, wherein: one end of the grouting pipe (11) is communicated with the inner cavity of the prestressed duct (2), and the other end of the grouting pipe (11) is connected with the sealing plug (12) in a clamping mode.

3. A reinforced subway prestressed girder according to claim 1, wherein: the sealing plug is characterized in that a threaded cavity is formed in the outer side surface of the sealing plug cover (9), a threaded column (13) fixedly connected with the right side of the sealing plug (12) is in threaded connection in the threaded cavity, and a straight groove (1301) is formed in the right end surface of the threaded column (13).

4. A reinforced subway prestressed girder according to claim 1, wherein: the number of the second fixing bolts (10) is a plurality, and the tail ends of the second fixing bolts (10) sequentially penetrate through the plugging cover (9) and the fixing plate (8) to be in threaded connection with the surface of the prestressed concrete beam (1).

5. A reinforced subway prestressed girder according to claim 1, wherein: the plugging assembly comprises a first plugging head (4), a plugging plate (5) and a first fixing bolt (6), wherein the first plugging head (4) is connected to the inner cavity of the prestressed duct (2) in a clamping mode, the left end of the first plugging head (4) is fixedly connected with the plugging plate (5), and the plugging plate (5) is fixedly connected with the prestressed concrete beam (1) through the first fixing bolt (6).

6. The reinforced subway prestressed girder body according to claim 5, wherein: the first blocking head (4) is connected with one end of the prestressed rib (3) in a clamping mode, the other end of the prestressed rib (3) penetrates through the second blocking head (7), and the end head of the prestressed rib (3) is connected with the side surface of the blocking cover (9) in a clamping mode.