Partially-assembled spillway with waste or damaged T-shaped beams

Abstract

The utility model relates to a waste or damaged T-beam partial assembly type spillway which comprises T-beam side walls, a cast-in-place concrete cushion layer and a cast-in-place concrete leveling layer, the cast-in-place concrete cushion layer is poured at the bottom of the spillway, and the two T-beam side walls are arranged on the two sides of the spillway on the cast-in-place concrete cushion layer in an inverted T shape. The T-shaped beam side wall has the advantages that the T-shaped beam wing plate is inversely arranged on the cast-in-place concrete cushion layer to form the side wall of the spillway, the stability of the side wall of the spillway is guaranteed, waste or damaged T-shaped beams are utilized, the honeycomb and the pitted surface on the surface of the side wall of the T-shaped beam are beneficial to pouring of the retaining wall of the cast-in-place concrete side wall, the quality of the spillway is improved, and the service life of the spillway is prolonged. And the spillway has enough anti-scouring performance.

Description

Technical Field

[0001] The utility model relates to the technical field of resource utilization of waste reinforced concrete components, in particular to a partially prefabricated spillway for waste or damaged T-beams. Background Art

[0002] A spillway is an important flood control facility of a reservoir. When the water level is higher than the limit water level, it will be discharged through the spillway to avoid overtopping or damage to the dam. Under normal operating conditions of the dam, the spillway generally does not pass water, and there is a lack of necessary maintenance in daily life, resulting in obvious damage to the spillways of some reservoirs built in the 1980s and 1990s, which need to be repaired and rebuilt.

[0003] On the other hand, a large amount of waste T-beams will be generated during the demolition, renovation or reconstruction of existing bridges. Except for surface defects, these waste T-beams generally still have good integrity. At present, most waste and defected T-beams are crushed and used as recycled concrete aggregates, but the potential engineering value of precast beams has not been fully utilized. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a partially prefabricated spillway for waste or damaged T-beams.

[0005] This partially prefabricated spillway for waste or damaged T-beams includes: T-beam side walls, a cast-in-place concrete cushion layer, and a cast-in-place concrete leveling layer. The cast-in-place concrete cushion layer is poured at the bottom of the spillway, and two T-beam side walls are arranged in an inverted T shape on both sides of the spillway on the cast-in-place concrete cushion layer;

[0006] A cast-in-place concrete leveling layer is poured between the two T-beam side walls, a cast-in-place concrete side wall protection layer is poured on the opposite surfaces of the two T-beam side walls, and a cast-in-place concrete bottom protection layer is poured between the two cast-in-place concrete side wall protection layers; along the length direction of the spillway, a water stop structure is provided between adjacent T-beam side walls.

[0007] Preferably, when there is an included angle between adjacent T-beam side walls, the cross-sectional shape of the water stop structure is an isosceles triangle, and the angle of the apex of the triangle matches the size of the included angle between adjacent T-beam side walls.

[0008] Preferably, along the length direction of the spillway, the spillway includes several segments, the inclination angles of adjacent segments are the same, there is a height difference at the connection of adjacent segments, forming a step; a cast-in-place concrete cushion layer is respectively poured at the bottom of each segment, and a drop structure is poured on the cast-in-place concrete cushion layer below the step. The cross-sectional shape of the drop structure is a triangle, and the top of the drop structure is connected to the cast-in-place concrete cushion layer above the step to form an inclined plane.

[0009] Preferably, the top of the cast-in-place concrete leveling layer is flush with the top of the wing plate of the T-beam side wall.

[0010] Preferably, the cast-in-place concrete side wall retaining wall is narrower at the top and wider at the bottom, and the width of the bottom of the cast-in-place concrete side wall retaining wall is less than half of the width of the wing plate of the T-beam side wall. The two sides of the cast-in-place concrete bottom protection extend to the wing plates of the two side T-beam side walls.

[0011] The beneficial effects of the present utility model are as follows:

[0012] 1) The present utility model utilizes the T-beam as the side wall of the spillway. The T-beam wing plate is inverted on the cast-in-place concrete cushion to form the side wall of the spillway, ensuring the stability of the side wall of the spillway. It not only realizes the utilization of waste or damaged T-beams, but also the honeycombing and pockmarks on the surface of the T-beam side wall are beneficial to the pouring of the cast-in-place concrete side wall retaining wall, improving the quality of the spillway and enabling the spillway to have sufficient anti-scouring performance.

[0013] 2) In view of the situation where the spillway has a slope change or a stepped structure in the length direction, the present utility model proposes corresponding water-stop structures and drop structures, enabling the spillway to meet the requirements of flood control and drainage. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of a partially prefabricated spillway using waste or damaged T-beams according to the present utility model;

[0015] Figure 2 It is a schematic diagram of multi-segment splicing in the longitudinal continuous ramp type structure of the spillway according to the present utility model;

[0016] Figure 3 It is a schematic diagram of cast-in-place concrete connection in the longitudinal continuous ramp type structure of the spillway according to the present utility model;

[0017] Figure 4 It is a schematic diagram of the longitudinal stepped ramp structure of the spillway according to the present utility model.

[0018] Description of the reference numerals: T-beam side wall 1, cast-in-place concrete cushion 3, cast-in-place concrete leveling layer 4, cast-in-place concrete side wall retaining wall 5, cast-in-place concrete bottom protection 6, water-stop structure 7, drop structure 8. Detailed Embodiments

[0019] The following further describes the present utility model in conjunction with embodiments. The description of the following embodiments is only for helping to understand the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

[0020] Embodiment 1

[0021] As an embodiment, as Figures 1 to 2As shown, this waste or damaged T-beam partially assembled spillway includes: T-beam side wall 1, cast-in-place concrete cushion layer 3 and cast-in-place concrete leveling layer 4, and the cast-in-place concrete cushion layer 3 is cast at the bottom of the spillway. The two T-beam side walls 1 are arranged in an inverted T shape on both sides of the spillway on the cast-in-place concrete cushion layer 3, that is, the T-beam is inverted and supported on the cast-in-place concrete cushion layer 3 by the wing plate, which strengthens the stability of the side wall foundation, and the web plate is perpendicular to the cast-in-place concrete cushion layer 3 to form the side wall of the spillway.

[0022] A cast-in-place concrete leveling layer 4 is poured between the two T-beam side walls 1 , and the top of the cast-in-place concrete leveling layer 4 is flush with the top of the flange of the T-beam side wall 1 , but not poured above the flange of the T-beam side wall 1 .

[0023] Cast-in-place concrete side wall retaining walls 5 are cast on the opposite surfaces of the two T-beam side walls 1, so that the thickness of the steel bar protective layer meets the requirements of the corresponding environmental category. The cast-in-place concrete side wall retaining walls 5 are narrow at the top and wide at the bottom. The bottom width of the cast-in-place concrete side wall retaining walls 5 is less than half the width of the wing plate of the T-beam side wall 1, that is, the bottom of the cast-in-place concrete side wall retaining walls 5 does not extend to the top of the cast-in-place concrete leveling layer 4. A cast-in-place concrete bottom retaining wall 6 is cast between the two cast-in-place concrete side wall retaining walls 5. Both sides of the cast-in-place concrete bottom retaining wall 6 extend to the wing plates of the T-beam side walls 1 on both sides, and a spillway is formed between the cast-in-place concrete side wall retaining walls 5 and the cast-in-place concrete bottom retaining wall 6.

[0024] like Figure 2 As shown, a water-stop structure 7 is provided between adjacent T-beam side walls 1 along the length direction of the spillway.

[0025] When used in engineering, first, cut the waste T-beam into sections along the wet joints, and transport them to the site by piggyback or hoisting for standby; then, place them upside down on the cushion layer with the flange as the foundation, install them on site according to the width of the spillway, and use the web as the side wall of the spillway to form the T-beam side wall 1. The surface carbonization depth should be measured, the loose and damaged waste T-beams should be removed, the loose or damaged parts of the inner surface should be chiseled out, and repairs should be made if necessary. The exposed steel bars of the T-beam side wall 1 should be repaired by grouting, and the exposed steel bars at the flange of the T-beam side wall 1 can be repaired or directly removed.

[0026] Slight honeycombs and rough surfaces on the surface do not need to be repaired to strengthen the bonding effect between the T-beam side wall 1 and the cast-in-place concrete side wall retaining wall 5, and no missing reinforcement will occur.

[0027] Then, a cast-in-place concrete leveling layer 4 is poured on the basis of the waste T beam to make the spillway bottom plate complete. Finally, a cast-in-place concrete side wall retaining wall 5 and a cast-in-place concrete bottom retaining wall 6 are poured inside the spillway to make the spillway have sufficient anti-scour performance.

[0028] Embodiment 2

[0029] As another embodiment, this second embodiment is proposed on the basis of the first embodiment, a more specific partially prefabricated spillway for waste or damaged T-beams:

[0030] When the slope of the spillway remains unchanged, the cast-in-place concrete cushion 3 is integrally cast, and a water stop structure 7 is provided at the connection between adjacent T-beam side walls 1 on the same side.

[0031] When the slope of the spillway changes, on both sides of the slope change, the cast-in-place concrete cushion 3 is cast separately. Since the T-beam side walls 1 on both sides of the slope change are perpendicular to the corresponding cast-in-place concrete cushions 3, there is also an included angle at the connection. As Figure 3 shown, at this time, the cross-sectional shape of the water stop structure 7 is an isosceles triangle with the apex angle facing downwards and inserted at the slope change. The angle of the apex angle matches the size of the included angle between adjacent T-beam side walls 1. The bottom end of the water stop structure 7 extends between the separately cast cast-in-place concrete cushions 3 to prevent water seepage between the cast-in-place concrete cushions 3.

[0032] It should be noted that the same or similar parts in this embodiment and the first embodiment can be referred to each other and will not be elaborated in this application.

[0033] Embodiment Three

[0034] As another embodiment, this third embodiment is proposed on the basis of the first and second embodiments, a more specific partially prefabricated spillway for waste or damaged T-beams. In the length direction of the spillway, according to design requirements, the spillway can adopt a continuous ramp type structure or a stepped ramp structure to meet the sufficient flood control and drainage requirements.

[0035] In this embodiment, the slope of the spillway remains unchanged, but along the length direction of the spillway, the spillway includes several segments. The inclination angles of adjacent segments are the same, and there is a height difference at the connection between adjacent segments, forming a step, as Figure 4 shown. The T-beam side walls 1 at the steps are at different heights and are staggered by a certain distance at the connection.

[0036] Cast-in-place concrete cushions 3 are respectively poured at the bottom of each segment. Due to the existence of the steps, the cast-in-place concrete cushions 3 are staggered. Therefore, a drop structure 8 is poured on the cast-in-place concrete cushion 3 below the step. The cross-sectional shape of the drop structure 8 is a triangle, the bottom surface of the triangle is connected to the upper surface of the cast-in-place concrete cushion 3 below the step, and the top end of the drop structure 8 is connected to the cast-in-place concrete cushion 3 above the step to form an inclined surface, making the bottom surface of the spillway transition naturally as a whole.

[0037] Furthermore, when there are not only steps in the spillway and the slope of the spillway at the steps changes, the settings of the water stop structure 7 and the drop structure 8 in the second and third embodiments can be combined to make the segments of the spillway connect naturally.

[0038] It should be noted that for the same or similar parts in this embodiment and the first embodiment, reference can be made to each other, and details will not be repeated in this application.

[0039] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other.

Claims

1. A partially prefabricated spillway for waste or damaged T - beams, characterized in that, Including: T-beam side walls, cast-in-place concrete cushion and cast-in-place concrete leveling layer. The cast-in-place concrete cushion is poured at the bottom of the spillway, and two T-beam side walls are arranged in an inverted T shape on both sides of the spillway on the cast-in-place concrete cushion; A cast-in-place concrete leveling layer is poured between the two T-beam side walls, a cast-in-place concrete side wall protection layer is poured on the opposite surfaces of the two T-beam side walls, and a cast-in-place concrete bottom protection layer is poured between the two cast-in-place concrete side wall protection layers; along the length direction of the spillway, a water stop structure is provided between adjacent T-beam side walls.

2. The prefabricated spillway for the waste or damaged T-beam according to claim 1, characterized in that When there is an included angle between adjacent T-beam side walls, the cross-sectional shape of the water stop structure is an isosceles triangle, and the angle of the apex of the triangle matches the size of the included angle between adjacent T-beam side walls.

3. The partially prefabricated spillway for waste or damaged T-beams according to claim 1, characterized in that, Along the length direction of the spillway, the spillway includes several segments, the inclination angles of adjacent segments are the same, there is a height difference at the connection of adjacent segments, forming a step; a cast-in-place concrete cushion is poured at the bottom of each segment respectively, and a drop structure is poured on the cast-in-place concrete cushion below the step. The cross-sectional shape of the drop structure is a triangle, and the top of the drop structure is connected to the cast-in-place concrete cushion above the step, forming an inclined plane.

4. The prefabricated spillway for the waste or damaged T-beam according to claim 1, characterized in that The top of the cast-in-place concrete leveling layer is flush with the top of the wing plate of the T-beam side wall.

5. The prefabricated spillway for the waste or damaged T-beam according to claim 1, characterized in that, The cast-in-place concrete side wall protection layer is narrow at the top and wide at the bottom. The width of the bottom of the cast-in-place concrete side wall protection layer is less than half of the width of the wing plate of the T-beam side wall, and both sides of the cast-in-place concrete bottom protection layer extend to the wing plates of the two T-beam side walls.

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