Concrete prestressed beam for low-carbon building

Abstract

The utility model discloses a concrete pre-stressed beam for a low-carbon building. The concrete pre-stressed beam comprises a concrete beam, pre-stressed tendons and an anti-corrosion plate, the concrete prestressed beam further comprises a reinforcing rib, wherein the outer wall of the reinforcing rib is fixedly connected with the inner wall of the concrete beam; the supporting mechanism is used for supporting the concrete beam, and the outer wall of the supporting mechanism is fixedly connected with the outer wall of the concrete beam; the supporting mechanism comprises steel bars, hexagonal frames are fixedly connected to the outer walls of the steel bars and are linearly arranged along the steel bars, and supporting rods are fixedly connected to the outer walls of the hexagonal frames; the utility model relates to the field of prestressed beams. According to the concrete prestressed beam, the supporting mechanism is arranged to form a stress system similar to a triangular truss, the stability is higher, and the problem that beams are not tightly connected when the beams are erected side by side due to the lack of the supporting mechanism is solved, so that a gap between the prestressed beam and a top plate is reduced, and the effect of improving the supporting effect is achieved.

Description

Technical Field

[0001] The utility model relates to the field of prestressed beams, in particular to a low-carbon concrete prestressed beam for construction. Background Art

[0002] Prestressed beams, or prestressed concrete beams, are a common form of beam construction in recent years. Prestressed concrete structural components are generally formed by the tensioning of prestressed tendons to form a rebound extrusion, so that the cross-section of the concrete is subjected to a certain amount of uniformly distributed internal pressure before it is put into use, which is used to partially or completely offset the stress formed by the use load. It can improve the performance of cracks and deformation of structural components, and the tensile stress and the compressive stress in the concrete form a self-balancing system, making the force of the concrete structure more reasonable.

[0003] In the prior art, there is a prestressed concrete beam with a Chinese patent number of CN211079874U. The prestressed concrete beam includes prestressed tendons, protective devices and anti-corrosion materials. The prestressed tendons include a prestressed failure section and a prestressed effective section; the protective device includes a protective sleeve and spiral stirrups. The protective sleeve is sleeved on the prestressed failure section, and the spiral stirrups are sleeved on the protective sleeve and part of the prestressed effective section; the anti-corrosion material is filled in the protective sleeve. The utility model isolates the prestressed failure section from the concrete through the protective sleeve to achieve the function of prestressed failure. At the same time, the protective sleeve can also act as an ordinary steel bar and exert its anti-cracking effect. The spiral stirrups are sleeved on the prestressed effective section, spanning the prestressed failure section and the prestressed effective section, thereby enhancing the anti-cracking performance of the concrete in the stress mutation interval.

[0004] However, although the prior art has many technical advantages, it has the disadvantage that, during use, the above-mentioned prestressed concrete beams lack a supporting mechanism, and when they are erected side by side, there is a problem of loose connection between the beams, so that there are some gaps between the prestressed beams with a certain curvature arranged under the top plate, which ultimately affects the actual supporting effect and the stability of the prestressed beams. Utility Model Content

[0005] In view of the deficiencies of the prior art, the technical solution adopted by the utility model to solve the technical problems is: a low-carbon prestressed concrete beam for construction, comprising:

[0006] Concrete beams;

[0007] Prestressed tendons, the outer wall of which is fixedly connected to the inner wall of the concrete beam;

[0008] An anti-corrosion plate, the anti-corrosion plate is used to protect the concrete beam, and the bottom of the anti-corrosion plate is fixedly connected to the top of the concrete beam;

[0009] The prestressed concrete beam also includes:

[0010] A reinforcing bar, wherein the reinforcing bar is used to reinforce the concrete beam, and the outer wall of the reinforcing bar is fixedly connected to the inner wall of the concrete beam;

[0011] A supporting mechanism, wherein the supporting mechanism is used to support the concrete beam, and an outer wall of the supporting mechanism is fixedly connected to an outer wall of the concrete beam;

[0012] The support mechanism comprises steel bars, the outer walls of which are fixedly connected with hexagonal frames, and the hexagonal frames are arranged linearly along the steel bars, and the outer walls of the hexagonal frames are fixedly connected with support rods.

[0013] Preferably, the outer wall of the concrete beam is fixedly connected to the outer wall of the steel bar through a trapezoidal groove, and the trapezoidal groove is opened in the wall of the concrete beam, the inner wall of the concrete beam is fixedly connected to the outer wall of the prestressed tendon through a prestressed hole, and the prestressed hole is opened in the wall of the concrete beam, and a first positioning hole is opened at the top of the concrete beam, and the first positioning hole is symmetrically arranged along the central axis of the concrete beam.

[0014] Preferably, the outer wall of the anti-corrosion plate is provided with a second positioning hole, and the second positioning hole is symmetrically arranged along the central axis of the anti-corrosion plate, the outer wall of the anti-corrosion plate is fixedly connected to the outer wall of the reinforcing rib through a third fixing hole, and the outer wall of the anti-corrosion plate is fixedly connected with a positioning pin. The first positioning hole and the second positioning hole correspond one to one.

[0015] Preferably, the reinforcing bar includes a first fixing column and a second fixing column, the inner wall of the concrete beam is fixedly connected to the outer wall of the first fixing column through a first fixing hole, and the first fixing hole is opened in the wall of the concrete beam, the inner wall of the concrete beam is fixedly connected to the outer wall of the second fixing column through a second fixing hole, and the second fixing hole is opened in the wall of the concrete beam. The first fixing hole and the second fixing hole correspond to the third fixing hole one by one.

[0016] The beneficial effects of the utility model are as follows:

[0017] 1. The utility model sets a support mechanism, and the hexagonal frames are arranged linearly along the steel bars. Every two hexagonal frames are connected by a support rod, and the two ends of the support rod are respectively fixed to the top and bottom of the two hexagonal frames, and the adjacent ends of two adjacent support rods are fixed at one place. The entire support mechanism is connected by the support rods to form a force system similar to a triangular truss, which has stronger stability and solves the problem of loose connection between beams when erected side by side due to lack of support mechanism, thereby reducing the gap between the prestressed beam and the top plate, thereby achieving the effect of improving the support effect.

[0018] 2. The utility model provides anti-corrosion plates and positioning pins, which facilitates construction workers to accurately arrange and fix concrete beams. At the same time, the anti-corrosion plates protect the concrete beams and prevent water seepage, thereby achieving an anti-corrosion effect on the concrete beams. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the front view of the utility model;

[0020] Figure 2 It is an exploded view of the utility model;

[0021] Figure 3 It is a schematic diagram of the structure of the utility model at A;

[0022] Figure 4 It is a schematic diagram of the structure of the utility model at B;

[0023] Figure 5 It is a side view of the support mechanism of the utility model.

[0024] In the figure: 1. concrete beam; 11. trapezoidal groove; 12. prestressed hole; 13. first positioning hole; 14. first fixing hole; 15. second fixing hole; 2. prestressed tendons; 3. anti-corrosion plate; 31. second positioning hole; 32. third fixing hole; 33. positioning pin; 4. reinforcing ribs; 41. first fixing column; 42. second fixing column; 5. supporting mechanism; 51. steel bars; 52. hexagonal frame; 53. support rod. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific purposes.

[0026] Example: See Figure 1 - Figure 5 The utility model provides a technical solution: a low-carbon prestressed concrete beam for construction, comprising:

[0027] Concrete beam 1;

[0028] Prestressed tendons 2, the outer wall of the prestressed tendons 2 is fixedly connected to the inner wall of the concrete beam 1;

[0029] The anti-corrosion plate 3 is used to protect the concrete beam 1, and the bottom of the anti-corrosion plate 3 is fixedly connected to the top of the concrete beam 1;

[0030] The prestressed concrete beam also includes:

[0031] A reinforcing bar 4, the reinforcing bar 4 is used to reinforce the concrete beam 1, and the outer wall of the reinforcing bar 4 is fixedly connected to the inner wall of the concrete beam 1;

[0032] A supporting mechanism 5, the supporting mechanism 5 is used to support the concrete beam 1, and the outer wall of the supporting mechanism 5 is fixedly connected to the outer wall of the concrete beam 1;

[0033] The supporting mechanism 5 includes a steel bar 51 , an outer wall of which is fixedly connected a hexagonal frame 52 , and the hexagonal frame 52 is linearly arranged along the steel bar 51 , and an outer wall of the hexagonal frame 52 is fixedly connected a supporting rod 53 .

[0034] The outer wall of the concrete beam 1 is fixedly connected to the outer wall of the steel bar 51 through a trapezoidal groove 11, and the trapezoidal groove 11 is opened in the wall of the concrete beam 1. The inner wall of the concrete beam 1 is fixedly connected to the outer wall of the prestressed tendon 2 through a prestressed hole 12, and the prestressed hole 12 is opened in the wall of the concrete beam 1. A first positioning hole 13 is opened at the top of the concrete beam 1, and the first positioning hole 13 is symmetrically arranged along the central axis of the concrete beam 1.

[0035] The outer wall of the anti-corrosion plate 3 is provided with a second positioning hole 31, and the second positioning hole 31 is symmetrically arranged along the central axis of the anti-corrosion plate 3. The outer wall of the anti-corrosion plate 3 is fixedly connected to the outer wall of the reinforcing rib 4 through the third fixing hole 32. The outer wall of the anti-corrosion plate 3 is fixedly connected with a positioning pin 33. The first positioning hole 13 and the second positioning hole 31 correspond one to one.

[0036] The reinforcing bar 4 includes a first fixing column 41 and a second fixing column 42. The inner wall of the concrete beam 1 is fixedly connected to the outer wall of the first fixing column 41 through a first fixing hole 14, and the first fixing hole 14 is opened in the wall of the concrete beam 1. The inner wall of the concrete beam 1 is fixedly connected to the outer wall of the second fixing column 42 through a second fixing hole 15, and the second fixing hole 15 is opened in the wall of the concrete beam 1. The first fixing hole 14 and the second fixing hole 15 correspond to the third fixing hole 32 one by one.

[0037] Working principle:

[0038] When in use, the inner wall of the concrete beam 1 is fixedly connected to the outer wall of the prestressed tendon 2 through the prestressed hole 12. The prestressed tendon 2 is tensioned to form a rebound extrusion, so that the cross-section of the concrete beam 1 is subjected to a certain amount of evenly distributed internal pressure before it is put into use, which is used to partially or completely offset the stress formed by the use load, and improve the performance of cracks and deformation of structural components through the prestressed tendon 2. The tensile stress and the compressive stress in the concrete beam 1 form a self-balancing system, so that the force of the entire concrete prestressed beam structure is more reasonable.

[0039] The first positioning hole 13 and the second positioning hole 31 correspond one to one. The positioning holes and the positioning pins 33 fixed on the anti-corrosion plate 3 facilitate the construction workers to accurately arrange and fix the concrete beam 1. The fixing parts used to connect the two beams are fixed in the positioning holes. The first fixing holes 14 and the second fixing holes 15 correspond one to one with the third fixing holes 32. By setting the reinforcing ribs 4, the inner wall of the concrete beam 1 is fixed to the outer wall of the first fixing column 41 through the first fixing holes 14, and the inner wall of the concrete beam 1 is fixed to the outer wall of the second fixing column 42 through the second fixing holes 15. The overall structure of the concrete beam 1 is further reinforced by multiple fixing columns, and is fixed to the top plate that needs to be erected on the beam by multiple fixing columns, so that the concrete beam 1 is fixed to the upper top plate more stably.

[0040] By setting the supporting mechanism 5, the outer wall of the concrete beam 1 is fixedly connected to the outer wall of the steel bar 51 through the trapezoidal groove 11, and the steel bar 51 is also prestressed in advance. The hexagonal frames 52 are arranged linearly along the steel bar 51, and every two hexagonal frames 52 are connected by a supporting rod 53. The two ends of the supporting rod 53 are respectively fixed on the top and bottom of the two hexagonal frames 52, and the adjacent ends of the two adjacent supporting rods 53 are fixed at one place. The entire supporting mechanism 5 is connected by the supporting rods 53 to form a force system similar to a triangular truss, which has stronger stability, makes the two adjacent concrete beams 1 more closely connected, and improves the overall supporting effect.

[0041] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A low-carbon prestressed concrete beam for construction, comprising: Concrete beam (1); Prestressed tendons (2), the outer wall of the prestressed tendons (2) being fixedly connected to the inner wall of the concrete beam (1); An anti-corrosion plate (3), the anti-corrosion plate (3) being used to protect the concrete beam (1), the bottom of the anti-corrosion plate (3) being fixedly connected to the top of the concrete beam (1); Characterized in that the prestressed concrete beam also includes: A reinforcing bar (4), the reinforcing bar (4) being used to reinforce the concrete beam (1), the outer wall of the reinforcing bar (4) being fixedly connected to the inner wall of the concrete beam (1); A supporting mechanism (5), the supporting mechanism (5) being used to support the concrete beam (1), the outer wall of the supporting mechanism (5) being fixedly connected to the outer wall of the concrete beam (1); The support mechanism (5) comprises a steel bar (51), the outer wall of the steel bar (51) is fixedly connected to a hexagonal frame (52), and the hexagonal frame (52) is linearly arranged along the steel bar (51), and the outer wall of the hexagonal frame (52) is fixedly connected to a support rod (53).

2. A low-carbon prestressed concrete beam for construction according to claim 1, characterized in that: The outer wall of the concrete beam (1) is fixedly connected to the outer wall of the steel bar (51) via a trapezoidal groove (11), and the trapezoidal groove (11) is provided in the wall of the concrete beam (1); the inner wall of the concrete beam (1) is fixedly connected to the outer wall of the prestressed bar (2) via a prestressed hole (12), and the prestressed hole (12) is provided in the wall of the concrete beam (1); a first positioning hole (13) is provided at the top of the concrete beam (1), and the first positioning hole (13) is symmetrically arranged along the central axis of the concrete beam (1).

3. The low-carbon prestressed concrete beam for construction according to claim 1, characterized in that: The outer wall of the anti-corrosion plate (3) is provided with a second positioning hole (31), and the second positioning hole (31) is symmetrically arranged along the central axis of the anti-corrosion plate (3). The outer wall of the anti-corrosion plate (3) is fixedly connected to the outer wall of the reinforcing rib (4) through a third fixing hole (32), and the outer wall of the anti-corrosion plate (3) is fixedly connected with a positioning pin (33).

4. The low-carbon prestressed concrete beam for construction according to claim 1, characterized in that: The reinforcing bar (4) comprises a first fixing column (41) and a second fixing column (42); the inner wall of the concrete beam (1) is fixedly connected to the outer wall of the first fixing column (41) via a first fixing hole (14), and the first fixing hole (14) is provided in the wall of the concrete beam (1); the inner wall of the concrete beam (1) is fixedly connected to the outer wall of the second fixing column (42) via a second fixing hole (15), and the second fixing hole (15) is provided in the wall of the concrete beam (1).

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