Support for construction of steel shell concrete combined pier top structure

Abstract

The utility model discloses a support for construction of a steel shell concrete combination pier top structure, which comprises a steel pipe column, the lower portion of the steel pipe column is embedded in a concrete pier column, the upper portion of the steel pipe column extends upwards out of the top of the concrete pier column, and a limiting piece is arranged on the outer side wall of the upper portion of the steel pipe column and used for supporting a pier top shell of the combination pier top structure. The steel pipe column is arranged in the pier column, and the limiting piece is arranged on the outer side of the steel pipe column, so that the pier top shell is supported and positioned from the interior of the pier column, a supporting bracket is prevented from being erected outside, more construction land is prevented from being occupied, the surrounding environment is not influenced, procedures such as bracket disassembly are reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge structure construction, and more specifically, to a support for the construction of a steel shell concrete composite pier top structure. Background Art

[0002] In municipal road bridges, cap-beam portal pier frame structures are often used as the main load-bearing structures. In order to meet the requirements of structural force, the pier top often adopts a steel-concrete composite pier top with higher stiffness and strength. The composite pier top can give full play to the mechanical properties of steel and concrete materials and improve the stiffness and strength of the structure.

[0003] When constructing the combined pier top, it is necessary to consider the installation and adjustment of the pier top outer shell. After the pier column construction is completed, a triangular steel truss is set up on the outside of the pier column formwork or a corbel bracket is welded with embedded components at the high pier position to form a support system. The support system assists construction personnel to complete the installation and adjustment of the pier top outer shell, and finally concrete is poured into the pier top outer shell to complete the pier top construction.

[0004] In order to reduce the safety risk of construction, the construction of external supports will close a large area, which will have a great impact on the surrounding environment. At the same time, since the pier top construction requires the installation and removal of the supports, the construction efficiency will be reduced. The working conditions involving segmented construction will further reduce the construction efficiency due to the step-by-step erection of the supports. Therefore, a more widely applicable support is urgently needed to meet the needs of the working environment while improving construction efficiency. Utility Model Content

[0005] Another object of the utility model is to provide a support for the construction of a steel shell concrete composite pier top structure. The support of the utility model is used to install the pier top shell, which has low site requirements, has no impact on the surrounding environment, reduces the steps of support disassembly, and improves construction efficiency.

[0006] In order to achieve these purposes and other advantages according to the utility model, a support for the construction of a steel shell concrete composite pier top structure is provided, including a steel pipe column, a lower portion of which is pre-buried in the concrete pier column, and an upper portion extends upward from the top of the concrete pier column, and a limit member is provided on the outer side wall of the upper portion of the steel pipe column, and the limit member is used to support the pier top shell of the composite pier top structure.

[0007] Preferably, concrete is poured into the cavity of the steel pipe column.

[0008] Preferably, a plurality of anchor rods are pre-buried in the cavity of the steel pipe column, any anchor rod is arranged along the height direction of the steel pipe column and extends out of the top surface of the steel pipe column, and the anchor rod is cast integrally with the concrete in the cavity.

[0009] Preferably, a plurality of shear nails are arranged on the surface of the steel pipe column.

[0010] Preferably, the limiting member includes a plurality of limiting units, which are symmetrically arranged on the periphery of the steel pipe column, one end of any limiting unit is welded to the outer wall of the steel pipe column, and the other end is horizontally connected to a connecting member, and one end of the connecting member away from the limiting unit is located outside the pier, and the limiting unit and the connecting member are detachably connected.

[0011] Preferably, the steel pipe column is vertically arranged in the middle of the concrete pier.

[0012] The utility model at least has the following beneficial effects:

[0013] 1. The utility model sets a steel pipe column inside the pier column, and sets a limiter on the outside of the steel pipe column to support and adjust the pier top shell from the inside of the pier column, avoiding the need to set up a supporting bracket outside, thereby avoiding occupying more construction land, having no impact on the surrounding environment, reducing the process of bracket disassembly, and improving construction efficiency;

[0014] 2. The lower part of the steel pipe column of the utility model is cast integrally with the pier column concrete, and the upper part is cast integrally with the concrete in the pier top shell. Pouring concrete in the cavity of the steel pipe column can make the structural force transition more reasonable and avoid safety risks caused by excessive changes in stiffness at the junction of the combined pier top and the concrete pier.

[0015] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the steel pipe column and pier column of the utility model;

[0017] Figure 2 This is a schematic diagram of the connection structure between the limit unit and the connecting piece of the utility model;

[0018] Description of the Figures in the Specification:

[0019] 1. Pier column, 2. Pier top shell, 3. Steel pipe column, 4. Anchor rod, 5. Shear nail, 6. Limit unit, 7. Connector. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0021] It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] like Figure 1 , Figure 2 As shown, the utility model provides a support for the construction of a steel shell concrete composite pier top structure, including a steel pipe column 3, a lower portion of which is pre-buried in a concrete pier column 1, and an upper portion extends upward from the top of the concrete pier column 1, and a limiter is provided on the outer wall of the upper portion of the steel pipe column 3, and the limiter is used to support the pier top shell 2 of the composite pier top structure.

[0023] In the present technical solution, the lower part of the steel pipe column 3 is cast as a whole with the concrete pier column 1 during the construction of the concrete pier column 1, and the upper part of the steel pipe column 3 is provided with a limiter, which is used for the subsequent support and adjustment of the pier top shell 2. After the pier top shell 2 is installed through the limiter, concrete is poured into the pier top shell 2 and the upper part of the steel pipe column 3 is cast as a whole to complete the construction of the combined pier top structure; the utility model arranges the steel pipe column 3 inside the pier column 1, and by arranging the limiter on the outside of the steel pipe column 3, the support and adjustment of the pier top shell 2 from the inside of the pier column 1 is achieved, avoiding the erection of a supporting bracket outside, thereby avoiding occupying more construction land, having no impact on the surrounding environment, and reducing the process of bracket disassembly, thereby improving construction efficiency. The cross-sections of the pier column 1, the pier top shell 2 and the steel pipe column 3 can be rectangular, circular or other shapes, and the limiter is a rigid component.

[0024] In another technical solution, concrete is poured into the cavity of the steel pipe column 3 .

[0025] In this technical solution, pouring concrete in the cavity of the steel pipe column 3 can make the structural force transition more reasonable and avoid the safety risks caused by excessive stiffness changes at the junction of the combined pier top structure and the concrete pier column 1. The concrete in the cavity of the steel pipe column 3 is poured synchronously with the concrete of the pier column 1.

[0026] In another technical solution, a plurality of anchor rods 4 are pre-buried in the cavity of the steel pipe column 3. Any anchor rod 4 is arranged along the height direction of the steel pipe column 3 and extends out of the top surface of the steel pipe column 3. The anchor rod 4 is cast integrally with the concrete in the cavity.

[0027] In the present technical solution, the limiter is arranged on the outer wall of the steel pipe column 3, and the limiter is used to support and adjust the pier top shell 2. When the pier top shell 2 is subsequently installed, the steel pipe column 3 will be subjected to eccentric force due to the installation of the pier top shell 2, thereby generating bending moment and upward pulling force. Therefore, the anchor rod 4 is embedded in the steel pipe column 3. After the concrete strength in the cavity of the steel pipe column 3 reaches the requirement, a nut is arranged on the top surface of the anchor rod 4. The anchor rod 4 is tightened by the nut, so that the steel pipe column 3 is further integrated with the concrete pier column 1, thereby improving the bending and pull-out resistance of the bracket.

[0028] In another technical solution, a plurality of shear nails 5 are arranged on the surface of the steel pipe column 3 .

[0029] In the present technical solution, shear nails 5 are arranged on the outer wall of the steel pipe column 3. The shear nails 5 located at the lower part of the steel pipe column 3 are cast as one with the concrete of the pier column 1. The shear nails 5 located at the upper part of the steel pipe column 3 are cast as one with the concrete of the pier top shell 2 when the concrete of the pier top shell 2 is subsequently cast, thereby realizing effective connection between the steel pipe column 3 and the concrete of the pier column 1 and the concrete of the pier top shell 2, thereby effectively transmitting the shear force, which can further improve the force-bearing capacity of the pier top.

[0030] In another technical solution, the limiting member includes a plurality of limiting units 6, which are symmetrically arranged on the periphery of the steel pipe column 3, one end of any limiting unit 6 is welded to the outer wall of the steel pipe column 3, and the other end is horizontally connected to a connecting member 7, and one end of the connecting member 7 away from the limiting unit 6 is located outside the pier 1, and the limiting unit 6 and the connecting member 7 are detachably connected.

[0031] In the present technical solution, the pier top shell 2 is installed on the top of the pier column 1. Since the inner diameter of the pier top shell 2 is larger than the outer diameter of the pier column 1, when the conventional construction method is used to install the pier top shell 2, a bracket is required to support the pier top shell 2. The present invention provides a limit unit 6 and a connector 7 on the periphery of the steel pipe column 3. The connector 7 extends out of the concrete pier column 1. The limit unit 6 and the connector 7 cooperate with each other to support and adjust the pier top shell 2. The specific process is as follows: Figure 2As shown, according to the designed installation height position of the pier top shell 2, the connecting piece 7 and the limiting unit 6 are first separated, and multiple connecting pieces 7 are horizontally welded or installed on the inner wall of the pier top shell 2 by bolts, and the installation positions of the multiple connecting pieces 7 are respectively set corresponding to the installation positions of the multiple limiting units 6, and then the pier top shell 2 is hoisted and lowered by a lifting equipment. When it is lowered to the position where the limiting unit 6 is set, the pier top shell 2 is slightly rotated until the multiple connecting pieces 7 on the inner wall of the pier top shell 2 are respectively in contact with the limiting units 6, that is, the inner wall of the pier top shell 2 is clamped in the multiple limiting units 6 through the multiple connecting pieces 7, thereby achieving the supporting effect on the pier top shell 2, and because the multiple connecting pieces 7 It is arranged corresponding to multiple limit units 6. When the connecting piece 7 is in corresponding contact with the limit unit 6, it can ensure that the installation position of the pier top shell 2 has no flat twisting feet, thereby realizing the adjustment of the pier top shell 2; after the adjustment is completed, the limit unit 6 and the connecting piece 7 can be connected by bolts, or they can be directly welded, so that the bracket and the pier top shell 2 are connected as a whole. After the subsequent pouring of concrete, the bracket itself also becomes a part of the combined pier top and participates in the overall force, thereby improving the structural rigidity and strength; after the installation of the pier top shell 2 is completed, a bottom template is installed at the bottom of the pier top shell 2 to seal the gap between the bottom of the pier top shell 2 and the pier column 1, and concrete is poured into the pier top shell 2 to complete the construction of the combined pier top structure.

[0032] The limiting unit 6 and the connecting piece 7 can both be made of I-beams, which are named as the first I-beam and the second I-beam respectively. The I-beam has a simple structure and is easy to obtain. The connection ends of the first I-beam and the second I-beam with the steel pipe column 3 and the pier top shell 2 can be adjusted according to the actual installation position and the structural characteristics of the steel pipe column 3 and the pier top shell 2. When the cross-sections of the steel pipe column 3 and the pier top shell 2 are rectangular, the limiting unit 6 and the connecting piece 7 are respectively installed on the side walls of the steel pipe column 3 and the pier top shell 2, and the first I-beam and the second I-beam are directly connected to the outer wall of the steel pipe column 3 and the inner wall of the pier top shell 2; Figure 1 , Figure 2 As shown, when the limiting unit 6 and the connecting piece 7 are respectively installed at the diagonal position of the outer wall of the steel pipe column 3 and the diagonal position of the inner wall of the pier top shell 2, it is necessary to cut a V-shaped groove structure at the connecting end of the first I-beam and the second I-beam so that the first I-beam and the second I-beam are respectively adapted to the connection between the steel pipe column 3 and the pier top shell 2 to ensure the tightness of the connection; when the cross-section of the steel pipe column 3 and the pier top shell 2 is circular, it is necessary to cut the connecting end of the first I-beam and the second I-beam into an arc shape, and the limiting unit 6 and the connecting piece 7 can be changed according to actual engineering requirements; in order to improve the stability of the connection position of the limiting unit 6 and the connecting piece 7, a rectangular steel plate can be welded at the connecting end of the limiting unit 6 and the connecting piece 7, thereby increasing the contact area between the limiting unit 6 and the connecting piece 7.

[0033] In another technical solution, the steel pipe column 3 is vertically arranged in the middle of the concrete pier 1 .

[0034] In the present technical solution, the steel pipe column 3 is arranged in the middle of the pier 1, which is more conducive to the transition of structural force and also facilitates the assembly installation of the limiting unit 6.

[0035] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A support for the construction of a steel shell concrete composite pier top structure, characterized in that: It comprises a steel pipe column, the lower part of which is embedded in the concrete pier column and the upper part of which extends upward from the top of the concrete pier column. A limiting piece is arranged on the outer side wall of the upper part of the steel pipe column, and the limiting piece is used to support the pier top shell of the combined pier top structure.

2. The support for construction of a steel shell concrete composite pier top structure as claimed in claim 1, characterized in that: Concrete is poured into the cavity of the steel pipe column.

3. The support for construction of a steel shell concrete composite pier top structure as claimed in claim 2, characterized in that: A plurality of anchor rods are pre-buried in the cavity of the steel pipe column, any anchor rod is arranged along the height direction of the steel pipe column and extends out of the top surface of the steel pipe column, and the anchor rod is cast integrally with the concrete in the cavity.

4. The support for construction of a steel shell concrete composite pier top structure as claimed in claim 1, characterized in that: A plurality of shear nails are arranged on the surface of the steel pipe column.

5. The support for construction of a steel shell concrete composite pier top structure as claimed in claim 1, characterized in that: The limiting member includes a plurality of limiting units, which are symmetrically arranged on the periphery of the steel pipe column. One end of any limiting unit is welded to the outer wall of the steel pipe column, and the other end is horizontally connected to a connecting member. One end of the connecting member away from the limiting unit is located outside the pier, and the limiting unit and the connecting member are detachably connected.

6. The support for construction of a steel shell concrete composite pier top structure as claimed in claim 1, characterized in that: The steel pipe column is vertically arranged in the middle of the concrete pier column.

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