Chute for concrete pouring of hollow bridge pier

Abstract

The utility model relates to the technical field of auxiliary tools for concrete construction, and discloses a sliding chute for concrete pouring of a hollow bridge pier, which comprises a plurality of branch grooves, a main feeding groove and a support frame, the main feeding groove is used for being communicated with the branch grooves, the plurality of branch grooves are obliquely arranged in a star-ray shape, the higher-end notches of the branch grooves are communicated with the main feeding groove, and the support frame is used for supporting the main feeding groove. And a notch in the lower end of the branch groove is fixedly connected with the supporting frame. The problems that in the prior art, due to the fact that a single concrete conveying pipe is adopted for blanking and overall pouring of the hollow pier, consumed time is long, and pouring is not uniform are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete construction auxiliary tools, in particular to a chute for pouring concrete of a hollow bridge pier. Background Art

[0002] Hollow bridge piers refer to piers made of concrete or reinforced concrete with hollow thin-walled structures. They make full use of the compressive properties of masonry materials and use their own large cross-sectional size and weight to withstand external forces in vertical and horizontal directions. They are sturdy and durable, save masonry materials, and reduce weight.

[0003] Since the cross-sectional area of ​​the pier is large and the pouring range is circular, if a single concrete transport pipe is used for overall pouring, the fluidity of the concrete is poor and it takes a long time for the concrete to fill the formwork. During the pouring process, there is a large difference in viscosity between the concrete injected first and the concrete injected later, resulting in uneven pouring of the pier. At present, segmented pouring is mostly used for concrete pouring of hollow piers, which is to divide the pier into multiple areas and pour each area one by one in turn.

[0004] However, during the regional pouring process, it is necessary to wait for the previous area to solidify and treat the construction joints before continuing the pouring of the next area. It takes a long time to cast the entire pier. Although the joints between the areas are treated with construction joints, the load-bearing capacity and overall structure of the regional pouring are inferior to those of the overall pouring. Utility Model Content

[0005] The utility model aims to provide a chute for pouring concrete of a hollow bridge pier, so as to solve the problem that the prior art uses a single concrete transport pipe to pour the hollow bridge pier as a whole, which is time-consuming and uneven in pouring.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a slide chute for pouring concrete of a hollow pier, including a branch groove, a main feeding groove for connecting the branch groove and a support frame, wherein there are multiple branch grooves, and the multiple branch grooves are star-ray-shaped and inclinedly arranged, the higher end notch of the branch groove is connected to the main feeding groove, and the lower end notch of the branch groove is fixedly connected to the support frame.

[0007] The principle and advantages of this scheme are: when pouring concrete, a tower crane is used to lift the chute to the inner membrane of the pier to be poured, and the support frame of the chute is placed in the center of the built template as a contact surface, and then the pump pipe is connected to the top of the main feeding chute, and the concrete in the main feeding chute is distributed to multiple sides of the pier by the inclined branch chute, so as to realize the simultaneous pouring of concrete. The concrete is poured and filled from multiple directions to ensure the uniform pouring of concrete. The specific number of branch chute can be set according to the size of the pier;

[0008] This method can realize the integral pouring of large-size hollow concrete, enhance the operating ability during the pouring of bridge piers, and also save the interval time for construction joint treatment, thereby improving construction efficiency. There is no need to move the discharge port of the conveying pump pipe for symmetrical pouring of concrete, and the chute can be reused, saving construction costs. At the same time, the chute is simple to use and operate, utilizing the hollow space of the inner template without occupying additional space, and has a low threshold for use.

[0009] As an improvement, the branch grooves include straight grooves and oblique grooves, there are two straight grooves and they are symmetrically arranged, there are four oblique grooves and they are symmetrically arranged, and the oblique grooves are located on both sides of the two straight grooves in groups of two.

[0010] The beneficial effect of this improvement is that the hollow pier to be poured is rectangular, the straight groove is aligned with the shorter side of the pier, and the inclined groove is aligned with the longer side of the pier. Multiple inclined grooves are used to increase the concrete pouring points on the long side of the pier, shortening the distance for concrete to flow to the target position to ensure uniform distribution of concrete.

[0011] As an improvement, the support frame includes an outer frame and an inner support rod. The outer frame is a chamfered rectangle including two long sides, two short sides and four chamfered sides. The inner support rod includes multiple long support rods and multiple short support rods. The two ends of the long support rods are respectively vertically fixedly connected to the two long sides, and the multiple long support rods are distributed at equal intervals. The two ends of the short support rods are respectively vertically fixedly connected to the short sides and the long support rods closest to the short sides, and the multiple short support rods are distributed at equal intervals.

[0012] The beneficial effect of this improvement is that the shape of the outer frame echoes that of the inner formwork of the pier, and inner support rods are added at the connection position between the support groove and the support frame to improve the firmness of the overall structure. The setting of the inner support rods also provides more contact surfaces for the placement of the support frame, making the placement more stable.

[0013] As an improvement, the oblique groove is fixedly connected to the long side, and the straight groove is fixedly connected to the short side;

[0014] The connection between the two ends of the two long support rods is located at the connection between the long side and the chamfered side, and the connection between the two ends of the two long support rods is located at the connection between the oblique groove and the long side.

[0015] The beneficial effect of this improvement is to improve the connection strength of the overall structure.

[0016] As an improvement, the branch groove and the main feeding groove are welded by a steel frame and a steel plate, and the steel frame includes a support frame for forming the branch groove and a main groove frame for forming the main feeding groove;

[0017] The main slot skeleton includes a long rectangular frame and two short rectangular frames. The two short rectangular frames are symmetrically distributed on both sides of the long rectangular frame and fixedly connected to the middle of the long side of the long rectangular frame. The angle between the short rectangular frame and the long rectangular frame is 172°. A connecting rod connecting the two short rectangular frames is welded in the long rectangular frame.

[0018] The beneficial effects of this improvement are: the angle between the short rectangular frame and the long rectangular frame makes the connection position from the main feed chute to the straight groove a slope, which better guides the flow of concrete; because the concrete enters the chute from the main feed chute in a concentrated manner, the main feed chute bears a greater concrete gravity, and the cross-shaped connection of the long rectangular frame and the short rectangular frame and the support of the connecting rod improve the supporting strength of the bottom of the main feed chute.

[0019] As an improvement, the steel frame also includes four auxiliary support rods, one end of the four auxiliary support rods are respectively fixedly connected to the four right angles of the long rectangular frame, and the other end of the auxiliary support rods is fixedly connected to the long side. The four auxiliary support rods are arranged in groups of two on both sides of the long rectangular frame, and the connection point between the auxiliary support rods and the long side is located between the two inclined grooves connected to the long side.

[0020] The beneficial effect of this improvement is that the inclined secondary support rod is provided to further improve the load-bearing capacity.

[0021] As an improvement, the straight groove and the adjacent oblique groove form an angle of 55°.

[0022] The beneficial effect of this improvement is that the straight grooves and the oblique grooves are evenly distributed.

[0023] As an improvement, the width of the lower end slot of the branch groove is 20-28 cm.

[0024] The beneficial effect of this improvement is to ensure the fluidity of concrete.

[0025] As an improvement, the support frame and the steel bar skeleton are D25 steel bars, and the steel plate is a 3mm thick steel plate.

[0026] As an improvement, the inclined groove forms an angle of 135° with the main feeding groove, and the straight groove forms an angle of 162° with the main feeding groove.

[0027] The beneficial effect of this improvement is that it ensures that there is a sufficient inclination angle and height difference to support the concrete to flow by its own gravity. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a top view of an embodiment of the utility model.

[0029] Figure 2 It is a schematic diagram of the structure of the groove of the embodiment of the utility model.

[0030] Figure 3 It is a schematic structural diagram of a steel bar skeleton according to an embodiment of the utility model.

[0031] Figure 4 It is a structural schematic diagram of a support frame according to an embodiment of the utility model.

[0032] Figure 5 Schematic diagram of the relationship between the steel bar skeleton and the support frame of the embodiment of the utility model.

[0033] Figure 6 for Figure 1 Section view along section line AA.

[0034] Figure 7 for Figure 1 Section view along section line BB. DETAILED DESCRIPTION

[0035] The following is further described in detail through specific implementation methods:

[0036] The figure marks in the drawings of the specification include: bridge pier 1, main feeding trough 2, straight groove 3, inclined groove 4, branch groove skeleton 5, long rectangular frame 6, short rectangular frame 7, connecting rod 8, auxiliary support rod 9, long side 10, short side 11, chamfered side 12, long support rod 13, short support rod 14.

[0037] Example

[0038] Basically as attached Figure 1 As shown, the chute for pouring concrete of the hollow pier includes a groove and a support frame. The groove is welded by a steel skeleton and a steel plate, and the support frame is placed in the center of the inner membrane of the pier 1.

[0039] As attached Figure 2 As shown, the grooves include branch grooves and a main feeding groove 2 for connecting the branch grooves, wherein there are six branch grooves, the branch grooves are star-ray-shaped and inclined, the higher end groove openings of the branch grooves are connected to the main feeding groove 2, the lower end groove openings of the branch grooves are fixedly connected to the support frame and connected to the bridge pier 1, the branch grooves include straight grooves 3 and oblique grooves 4, there are two straight grooves 3 and they are symmetrically arranged, the straight grooves 3 connect the main feeding groove 2 and the short side of the bridge pier 1, there are four oblique grooves 4 and they are symmetrically arranged, the four oblique grooves 4 are located on both sides of the two straight grooves 3 in a group of two, and the oblique grooves 4 connect the main feeding groove 2 and the long side of the bridge pier 1.

[0040] As attached Figure 3As shown, the steel bar skeleton includes a branch groove skeleton 5 for forming a branch groove and a main groove skeleton for forming a main feeding groove; the branch groove skeleton 5 includes 12 steel bars, which are respectively located at the bottom edges of both sides of the six branch grooves, and fixedly connect the bottom plate and the two side plates of the branch grooves; the main groove skeleton includes a long rectangular frame 6 and two short rectangular frames 7, and the two short rectangular frames 7 are symmetrically distributed on both sides of the long rectangular frame 6 and fixedly welded to the middle of the long side of the long rectangular frame 6, and the angle between the short rectangular frame 7 and the long rectangular frame 6 is 172°. Figure 3 Looking down at the main slot frame, the connection between the long rectangular frame 6 and the two short rectangular frames 7 is in a cross shape, and a connecting rod 8 connecting the two short rectangular frames 7 is welded inside the long rectangular frame 6.

[0041] The steel skeleton also includes four auxiliary support rods 9, one end of the four auxiliary support rods 9 is fixedly connected to the four right angles of the long rectangular frame 6, and the other end of the auxiliary support rods 9 is fixedly connected to the support frame. The four auxiliary support rods are arranged in groups of two on both sides of the long rectangular frame 6, and the connection point between the auxiliary support rods 9 and the support frame is located between the two oblique grooves 4 connected to the side of the support frame.

[0042] As attached Figure 4 As shown, the support frame includes an outer frame and inner support rods, the outer frame includes two long sides 10, two short sides 11 and four chamfered sides 12 to form a chamfered rectangle, the inner support rods include multiple long support rods 13 and multiple short support rods 14, the two ends of the long support rods 13 are respectively vertically fixed and welded to the two long sides 10, and the multiple long support rods 13 are distributed at equal intervals, the two ends of the short support rods 14 are respectively vertically fixed and connected to the short sides 11 and the long support rods 13 closest to the short sides 11, and the multiple short support rods 14 are distributed at equal intervals.

[0043] The oblique groove 4 is fixedly welded to the long side 10 , and the straight groove 3 is fixedly welded to the short side 11 .

[0044] As attached Figure 5 As shown, in this embodiment, there are five long support rods 13, wherein the connection parts at both ends of two long support rods 13 are located at the connection parts of the long side 10 and the chamfered side 12; wherein the connection parts at both ends of two long support rods 13 are located at the connection parts of the oblique groove 4 and the long side 10; and the remaining long support rod 13 connects the middle parts of the two long sides 10.

[0045] In this embodiment, there are six short support rods 14, among which three short support rods 14 are divided into two groups, and the two groups of short support rods 14 are symmetrically distributed between the two chamfered edges 12 located on the same side of the short side 11; among which, two short support rods 14 symmetrically connect the middle part of the short side 11 on both sides and the middle part of the long support rod 13.

[0046] Among them, the auxiliary support rod 9 is fixedly welded to the long side 10; the straight groove 3 and the adjacent oblique groove 4 form an angle of 55°; the width of the lower end notch of the branch groove is 20-28cm. The support frame and the steel bar skeleton are D25 steel bars, and the steel plate is 3mm thick steel plate.

[0047] As attached Figure 6 and attached Figure 7 As shown, the angle between the inclined groove 4 and the main feeding groove is 135°, and the angle between the straight groove 3 and the main feeding groove is 162°.

[0048] The chute for pouring hollow pier concrete is used to pour pier 1 with an outer mold of 650 cm long and 400 cm wide, and an inner mold of 510 cm long and 529 cm wide. When building the formwork of the pier, a placement platform for placing the chute is built on the inner side of the inner formwork. During pouring, the chute is lifted to the pier 1 to be poured by a tower crane, and the support frame is placed on the placement platform. The lower end discharge port of the straight groove 3 is aligned with the middle of the short side direction of the pier 1, and the lower end discharge port of the inclined groove 4 is aligned with the middle of the short side direction of the pier 1. Align the long side of the pier 1, and the outlet of the branch groove is longer than the outer frame of the support frame, so that the concrete discharged from the outlet of the branch groove can accurately fall between the inner and outer templates of the pier; the pump pipe connected to the concrete truck is lifted to the top of the main feeding trough, and the concrete is transported to the outlet of the pump pipe by the ground pump and falls into the main feeding trough. As the concrete accumulates in the main feeding trough, the concrete overflows to the branch groove, and the six branch grooves disperse the cement to multiple sides of the pier to achieve simultaneous pouring. After the concrete pouring is completed, the chute is lifted to a flat place on the ground by a tower crane and placed for the next use.

[0049] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A chute for pouring concrete into a hollow pier, characterized in that: It includes a branch groove, a main feeding groove for connecting the branch groove and a support frame. There are multiple branch grooves, which are star-ray shaped and inclined. The higher end groove opening of the branch groove is connected to the main feeding groove, and the lower end groove opening of the branch groove is fixedly connected to the support frame.

2. The chute for pouring concrete of a hollow pier according to claim 1 is characterized in that: The branch grooves include straight grooves and oblique grooves. There are two straight grooves and they are symmetrically arranged. There are four oblique grooves and they are symmetrically arranged. The oblique grooves are located on both sides of the two straight grooves in groups of two.

3. The chute for pouring concrete of hollow piers according to claim 2 is characterized in that: The support frame includes an outer frame and an inner support rod. The outer frame is a chamfered rectangle including two long sides, two short sides and four chamfered sides. The inner support rod includes a plurality of long support rods and a plurality of short support rods. The two ends of the long support rods are respectively vertically fixedly connected to the two long sides, and the plurality of long support rods are distributed at equal intervals. The two ends of the short support rods are respectively vertically fixedly connected to the short sides and the long support rods closest to the short sides, and the plurality of short support rods are distributed at equal intervals.

4. The chute for pouring concrete of a hollow pier according to claim 3 is characterized in that: The oblique groove is fixedly connected to the long side, and the straight groove is fixedly connected to the short side; The connection between the two ends of the two long support rods is located at the connection between the long side and the chamfered side, and the connection between the two ends of the two long support rods is located at the connection between the oblique groove and the long side.

5. The chute for pouring concrete of hollow piers according to claim 4 is characterized in that: The branch groove and the main feeding groove are welded by a steel frame and a steel plate, and the steel frame includes a support frame for forming the branch groove and a main groove frame for forming the main feeding groove; The main slot skeleton includes a long rectangular frame and two short rectangular frames. The two short rectangular frames are symmetrically distributed on both sides of the long rectangular frame and fixedly connected to the middle of the long side of the long rectangular frame. The angle between the short rectangular frame and the long rectangular frame is 172°. A connecting rod connecting the two short rectangular frames is welded in the long rectangular frame.

6. The chute for pouring concrete of a hollow pier according to claim 5, characterized in that: The steel frame also includes four auxiliary support rods, one end of the four auxiliary support rods are respectively fixedly connected to the four right angles of the long rectangular frame, and the other end of the auxiliary support rods is fixedly connected to the long side. The four auxiliary support rods are arranged in groups of two on both sides of the long rectangular frame, and the connection point between the auxiliary support rods and the long side is located between the two oblique grooves connected to the long side.

7. The chute for pouring concrete of a hollow pier according to claim 6, characterized in that: The straight groove and the adjacent oblique groove form an angle of 55°.

8. The chute for pouring concrete of a hollow pier according to claim 7, characterized in that: The width of the lower end notch of the branch groove is 20-28 cm.

9. The chute for pouring concrete of a hollow pier according to claim 8, characterized in that: The support frame and the steel bar skeleton are D25 steel bars, and the steel plate is a 3mm thick steel plate.

10. The chute for pouring concrete of a hollow pier according to claim 9, characterized in that: The inclined groove and the main feeding groove form an angle of 135°, and the straight groove and the main feeding groove form an angle of 162°.

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