Precise pre-burying and positioning device for grouting sleeve of assembly type bridge bearing platform

Abstract

The utility model discloses an accurate pre-burying and positioning device for a grouting sleeve of an assembly type bridge bearing platform, which relates to the field of capital construction and comprises a lower flange plate, an upper flange plate and a positioning rib, a plurality of first through holes distributed in an annular array are formed in the lower flange plate along the thickness direction of the lower flange plate; a plurality of second through holes distributed in an annular array mode are formed in the upper flange plate in the thickness direction of the upper flange plate, the number of the positioning ribs, the number of the first through holes and the number of the second through holes are the same, and the first through holes and the second through holes are in one-to-one correspondence on the axis. The grouting sleeve is jointly positioned on the lower flange plate and the upper flange plate, so that the position placement precision and the subsequent pre-burying precision of the grouting sleeve are effectively improved, the grouting sleeve is prevented from deviating during subsequent concrete vibration, the precision and the quality of assembly type lower structure construction are improved, and the reworking risk is reduced.

Description

Technical Field

[0001] The utility model relates to the field of infrastructure construction, and particularly relates to a precise pre-buried positioning device for grouting sleeves of an assembled bridge cap. Background Technique

[0002] In recent years, driven by the concept of sustainable development, assembled structures have been gradually applied to bridge construction due to their advantages such as standardized design, factory production, assembled construction, land saving, intensive efficiency, and green harmony. Prefabricated concrete bridges have also become a new hotspot in bridge engineering. As the main load-bearing component of a bridge, the lower structure of the bridge has always been the focus of bridge design and construction. Whether each link and detail can be well controlled through scientific and effective construction methods during construction is the key to bridge engineering construction. When splicing prefabricated concrete bridges, grouting sleeves are required for concrete pouring and splicing. During bridge construction, the grouting sleeves are pre-buried in the bridge cap. Currently, the placement of the grouting sleeves is carried out by construction workers based on experience or after measurement. To ensure the stability of the grouting sleeves during pre-burial, several grouting sleeves are often bundled with steel bars for pre-burial. However, the bundling method has a poor positioning effect on the grouting sleeves, and the bundling will cause the grouting sleeves to tilt and deviate, resulting in the risk of rework during the subsequent assembly of prefabricated pipe piers of the assembled bridge due to the deviation of the pre-buried grouting sleeves in the bridge cap. There is currently a lack of a device for good positioning of grouting sleeves during pre-burial.

[0003] Therefore, it is necessary to invent a precise pre-buried positioning device for grouting sleeves of an assembled bridge cap to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a precise pre-buried positioning device for grouting sleeves of an assembled bridge cap to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A precise pre-buried positioning device for grouting sleeves of an assembled bridge cap, including a lower flange, an upper flange, and positioning bars. A plurality of first through holes arranged in a circular array are opened along the thickness direction of the lower flange, and a plurality of second through holes arranged in a circular array are opened along the thickness direction of the upper flange. The positioning bars, the first through holes, and the second through holes are all provided in a plurality and the number is the same. The plurality of first through holes and the plurality of second through holes are axially corresponding one by one. The diameter value of the positioning bar is equal to the diameter value of the first through hole and less than the outer diameter value of the grouting sleeve. The diameter value of the second through hole is greater than the outer diameter value of the grouting sleeve.

[0006] Optionally, the lower flange and the upper flange are annular structures with the same inner and outer diameter values.

[0007] Optionally, the widths of the annular structures of the lower flange and the upper flange are 6 cm, and the thicknesses of the lower flange and the upper flange are both 1 cm.

[0008] Optionally, the diameter value of the second through hole is 0.1 - 0.2 cm larger than the outer diameter value of the grouting sleeve.

[0009] Optionally, it further includes angle steels. Two angle steels are provided and welded on the upper surface of the upper flange.

[0010] Optionally, it further includes a sealing rubber ring and an anti-blocking rubber plug. The sealing rubber ring and the anti-blocking rubber plug are both provided in several numbers and are the same as the number of the first through holes, and are respectively used for press-fitting and plugging inside the lower end and the upper end of the grouting sleeve.

[0011] The technical effects and advantages of the present utility model:

[0012] By jointly positioning the grouting sleeve with the lower flange and the upper flange, the present utility model effectively improves the placement accuracy of the grouting sleeve position and the subsequent embedding accuracy, avoids the offset of the grouting sleeve during subsequent concrete vibration, improves the accuracy and quality of the prefabricated lower structure construction, and reduces the risk of rework. Description of the Drawings

[0013] Figure 1 It is a schematic vertical structure diagram after the installation of the present utility model.

[0014] Figure 2 It is an exploded structure diagram of the present utility model.

[0015] Figure 3 It is a schematic top view structure diagram of the present utility model.

[0016] Figure 4 It is a schematic front view sectional structure diagram of the present utility model.

[0017] Figure 5 It is a schematic partial front view sectional structure diagram of the present utility model.

[0018] Figure 6 It is a schematic front view sectional structure diagram of the grouting sleeve of the present utility model.

[0019] In the figure: 1. Lower flange; 2. Upper flange; 3. Positioning rib; 4. First through hole; 5. Second through hole; 6. Angle steel; 7. Grouting sleeve; 8. Sealing rubber ring; 9. Anti-blocking rubber plug. Detailed Embodiments

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0022] In the present utility model, unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0024] The present utility model provides a precise pre-embedded positioning device for grouting sleeves of assembled bridge abutments, which is mainly a construction device for precisely positioning the grouting sleeves 7 during the pre-embedding in assembled bridge abutments, avoiding rework caused by the deviation of the pre-embedded grouting sleeves 7 in the abutments during the subsequent assembly of precast pipe piers of assembled bridges.

[0025] Such as Figure 1-6As shown in the figure: An accurate pre-embedded positioning device for grouting sleeves of an assembled bridge cap includes a lower flange 1, an upper flange 2 and positioning bars 3. The positioning bars 3 are provided in multiple numbers and are consistent with the number of grouting sleeves 7 to be pre-embedded. Both the lower flange 1 and the upper flange 2 are cut from metal plates into annular metal plates with a width a of 6 cm according to the required layout positions of the designed grouting sleeves 7. The thickness b of the metal plates includes but is not limited to 1 cm. Openings are made on the two annular steel plates according to the pre-embedded center positions of several designed grouting sleeves 7 to obtain the lower flange 1 and the upper flange 2. The opening on the lower flange 1 is the first through hole 4, and the opening on the upper flange 2 is the second through hole 5. The diameter value of the first through hole 4 is equal to the diameter value of the positioning bar 3 and is smaller than the outer diameter value of the grouting sleeve 7. The diameter value of the second through hole 5 is larger than the outer diameter value of the grouting sleeve 7, and the diameter value of the second through hole 5 is 0.1 - 0.2 cm larger than the outer diameter value of the grouting sleeve 7.

[0026] As Figure 6 shown in the figure: The grouting sleeve 7 is a cylindrical structure with open ends at both ends. The device also includes a sealing rubber ring 8 and an anti-blocking rubber plug 9. The sealing rubber ring 8 and the anti-blocking rubber plug 9 are both provided in several numbers and are consistent with the number of grouting sleeves 7. The sealing rubber ring 8 is in an annular structure and is press-fitted into the bottom end of the grouting sleeve 7. The inner side of the annular structure of the sealing rubber ring 8 is used for press-fitting and sealing with the positioning bar 3. The sealing rubber ring 8 is used to improve the placement stability of the grouting sleeve 7 while achieving its bottom sealing, avoiding the overflow of the slurry at its bottom end during subsequent grouting. The anti-blocking rubber plug 9 is a circular sealing plug structure and is used for press-fitting into the top end of the grouting sleeve 7 for its top sealing, avoiding impurities such as concrete and soil at the construction site from falling into the grouting sleeve 7 after pre-embedding and affecting the subsequent use of the grouting sleeve 7.

[0027] During use, several positioning bars 3 are correspondingly inserted into several first through holes 4 of the lower flange 1. As Figure 4 shown in the figure: The bottom ends of several positioning bars 3 contacting the flat ground ensure the horizontal placement of the lower flange 1. The bottom end of the grouting sleeve 7 passes through the positioning bar 3 and is placed on the upper surface of the lower flange 1. A sealing rubber ring 8 is filled between the bottom end of the grouting sleeve 7 and the positioning bar 3. The anti-blocking rubber plug 9 is filled inside the top end of the grouting sleeve 7. Finally, the second through hole 5 of the upper flange 2 is correspondingly inserted with the upper end of the grouting sleeve 7.

[0028] The lower flange 1 and the upper flange 2 jointly position the grouting sleeve 7, which can effectively improve the placement accuracy of the grouting sleeve 7 and the subsequent pre-embedding accuracy, avoid the deviation of the grouting sleeve 7 during subsequent concrete vibration, improve the accuracy and quality of the assembled lower structure construction, and reduce the risk of rework.

[0029] The diameter value of the second through hole 5 is greater than the outer diameter value of the grouting sleeve 7. Due to the deformation characteristics of the sealing rubber ring 8 and the deviation in the straightness of the positioning rib 3, there will be a deviation in the verticality of the placement of the grouting sleeve 7 to ensure that a plurality of grouting sleeves 7 can all pass through the corresponding second through holes 5.

[0030] It further includes angle steels 6. Two angle steels 6 are provided and welded on the upper surface of the upper flange 2 for subsequent fixation with the embedded mold through the angle steels 6. The embedded mold is fixed below the angle steels 6 to support the upper flange 2 and the angle steels 6. After casting with the mold, the grouting sleeve 7 is embedded. Moreover, the upper flange 2 is located at the uppermost part and can be detached and recycled after embedding.

[0031] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A device for accurately pre-embedding and positioning grouting sleeves for assembled bridge caps, characterized in that: The invention comprises a lower flange (1), an upper flange (2) and a positioning rib (3); the lower flange (1) is provided with a plurality of first through holes (4) arranged in a circular array along its thickness direction; the upper flange (2) is provided with a plurality of second through holes (5) arranged in a circular array along its thickness direction; the positioning rib (3), the first through hole (4) and the second through hole (5) are all provided in a plurality and the number is the same; the plurality of first through holes (4) and the plurality of second through holes (5) correspond one to one on the axis; the diameter value of the positioning rib (3) is equal to the diameter value of the first through hole (4) and is smaller than the outer diameter value of the grouting sleeve (7); the diameter value of the second through hole (5) is larger than the outer diameter value of the grouting sleeve (7).

2. According to claim 1, the device for accurately embedding and positioning the grouting sleeve of an assembled bridge cap is characterized by: The lower flange (1) and the upper flange (2) are annular structures with the same inner and outer diameters.

3. According to claim 2, the device for accurately embedding and positioning the grouting sleeve of an assembled bridge cap is characterized by: The width of the annular structure of the lower flange (1) and the upper flange (2) is 6 cm, and the thickness of the lower flange (1) and the upper flange (2) are both 1 cm.

4. According to claim 1, the device for accurately embedding and positioning the grouting sleeve of an assembled bridge cap is characterized by: The diameter of the second through hole (5) is 0.1-0.2 cm greater than the outer diameter of the grouting sleeve (7).

5. According to claim 1, the device for accurately embedding and positioning the grouting sleeve of an assembled bridge cap is characterized by: It also includes angle steel (6), wherein two angle steels (6) are provided and welded to the upper surface of the upper flange (2).

6. The device for accurately pre-embedding and positioning the grouting sleeve of an assembled bridge cap according to claim 1 is characterized in that: It also includes a sealing rubber ring (8) and an anti-blocking rubber plug (9), wherein the sealing rubber ring (8) and the anti-blocking rubber plug (9) are both provided in a plurality and the number of the sealing rubber ring and the anti-blocking rubber plug is the same as the number of the first through holes (4), and are used to respectively act as interference plugs inside the lower end and the upper end of the grouting sleeve (7).

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