Sectional fast-assembled steel tube concrete column pier

Abstract

The utility model discloses a kind of segmental quick assembly steel pipe concrete column pier, intermediate concrete layer is poured between connecting outer layer and pre-positioning inner layer to constitute a whole;Pre-positioning inner layer includes inner steel pipe, inner steel pipe inner side wall surface is close to top and is fixedly provided with at least two U-shaped sleeves that are distributed in circle around inner steel pipe axis, each U-shaped sleeve is fixedly inserted with stand, so that stand is attached on inner steel pipe inner side wall surface;Connecting outer layer includes outer steel pipe, connecting assembly is installed on outer steel pipe, for realizing the splicing of upper and lower two section steel pipe concrete column pier fixed.The utility model relates to steel pipe concrete column pier technical field, by the setting of pre-positioning inner layer, prevent deviation still exists when upper and lower two steel pipe concrete column pier is connected, the connection of each Y-shaped support and knife-shaped frame can use only one bolt and nut, simple operation.

Description

Technical Field

[0001] This utility model relates to the technical field of steel-concrete composite column piers, specifically to a segmented and rapidly assembled steel-concrete composite column pier. Background Technology

[0002] In the construction of piers for bridges, buildings, and other engineering projects, traditional cast-in-place concrete piers have disadvantages such as long construction periods, large quantities of formwork and supports, significant susceptibility to weather conditions, and a large amount of on-site work. To overcome these shortcomings, prefabrication and assembly technology has been widely used.

[0003] Existing precast concrete piers are prone to axial deviation between upper and lower segments during hoisting and assembly, making adjustments difficult, time-consuming, and labor-intensive. A precast hollow-core steel-concrete segmental pier (publication number CN220099631U) includes precast hollow-core steel-concrete segments, internal prestressing tendons, and external energy-dissipating connection components. The internal prestressing tendons pass sequentially through the center of each precast hollow-core steel-concrete segment, with both ends anchored to the abutment and cap beam at both ends of the pier. Adjacent precast hollow-core steel-concrete segments are joined by external energy-dissipating connection components. However, this design lacks alignment functionality when connecting upper and lower segments and requires a large number of bolts and nuts, resulting in a significant workload. Utility Model Content

[0004] The present invention aims to provide a steel-concrete composite column pier that enables rapid segmental assembly, improves assembly efficiency and quality, and reduces construction workload.

[0005] Therefore, the present invention adopts the following technical solution: a segmented and rapidly assembled steel pipe concrete column pier, wherein a connecting outer layer is provided outside the intermediate concrete layer, a pre-positioning inner layer is provided inside the intermediate concrete layer, and the intermediate concrete layer is poured between the connecting outer layer and the pre-positioning inner layer to form a whole.

[0006] The pre-positioned inner layer includes an inner steel pipe. At least two U-shaped sleeves are fixedly installed on the inner wall of the inner steel pipe near the top, evenly distributed around the axis of the inner steel pipe. The openings of the U-shaped sleeves are welded to the inner wall of the inner steel pipe with the openings facing outwards, and the bottoms of the U-shaped sleeves are closed. A column is fixedly inserted into each U-shaped sleeve, so that the column fits against the inner wall of the inner steel pipe. When the upper and lower sections of the steel pipe concrete column pier are spliced, the inner steel pipe sleeve of the upper section of the steel pipe concrete column pier is coaxially positioned outside all the columns of the lower section of the steel pipe concrete column pier.

[0007] The connecting outer layer includes an outer steel pipe, on which a connecting component is installed to achieve splicing and fixing of the upper and lower sections of the steel pipe concrete column pier.

[0008] As a preferred embodiment of the above solution, the connecting assembly includes at least two Y-shaped brackets and at least two knife-shaped brackets. The Y-shaped brackets are welded to the outer wall of the outer steel pipe near the top, with the openings facing outwards and having a uniform inner width. The Y-shaped brackets have elongated holes extending vertically. The outer wall of the outer steel pipe is welded to the knife-shaped brackets near the bottom, with circular holes corresponding to the elongated holes. When the upper and lower sections of the steel pipe concrete column pier are assembled, the knife-shaped brackets are inserted into the openings of the Y-shaped brackets and locked together by bolt and nut assemblies.

[0009] More preferably, the number of U-shaped sleeves is four.

[0010] More preferably, the number of Y-shaped brackets is 4, the number of knife-shaped brackets is 4, and the knife-shaped brackets and Y-shaped brackets are arranged vertically opposite each other.

[0011] More preferably, the top surface of the U-shaped sleeve is lower than the top of the inner steel pipe, the column is inserted into the U-shaped sleeve and welded to the inner steel pipe, and the top of the column is 10-20cm higher than the top of the inner steel pipe.

[0012] More preferably, the column and the inner steel pipe are attached and tangent, and there are two welds between the column and the inner steel pipe, which are symmetrically arranged on the left and right sides of the tangent line.

[0013] This utility model provides a segmented and rapidly assembled steel-concrete composite column pier, which has the following advantages compared with the prior art: By setting the pre-positioning inner layer, the upper and lower steel-concrete composite column piers are placed coaxially during hoisting and splicing, preventing axial deviation between the upper and lower steel-concrete composite column piers during connection, reducing the difficulty of connection work. The elongated hole design on the Y-shaped bracket in the outer layer reduces the precision requirements for prefabricated component processing, improves the feasibility and efficiency of construction, and the bolt and nut assembly provides a fixed connection between the Y-shaped bracket and the knife-shaped frame. Each Y-shaped bracket and the knife-shaped frame can be connected using only one bolt and nut assembly, making operation simple. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the assembled three-dimensional structure of this utility model.

[0015] Figure 2 This is a three-dimensional bottom view schematic diagram of the structure of this utility model.

[0016] Figure 3 This is a sectional view of the assembled part of this utility model.

[0017] In the diagram: 1. Intermediate concrete layer, 2. Inner steel pipe, 3. U-shaped sleeve, 4. Column, 5. Outer steel pipe, 6. Y-shaped bracket, 7. Long hole, 8. Knife-shaped bracket, 9. Round hole, 10. Bolt, 11. Nut. Detailed Implementation

[0018] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] like Figure 1-3 As shown, a segmented and rapidly assembled steel-concrete composite column pier includes an intermediate concrete layer 1, an outer connecting layer outside the intermediate concrete layer 1, and a pre-positioning inner layer inside the intermediate concrete layer 1; and the intermediate concrete layer 1 is poured between the outer connecting layer and the pre-positioning inner layer to form a whole.

[0020] The intermediate concrete layer 1 connects the outer layer and the pre-positioned inner layer to form a section of steel pipe concrete column pier. In actual use, multiple sections of steel pipe concrete column pier need to be spliced ​​longitudinally.

[0021] Specifically, the pre-positioning inner layer includes an inner steel pipe 2. At least two U-shaped sleeves 3, evenly distributed circumferentially around the axis of the inner steel pipe 2, are fixedly installed on the inner wall of the inner steel pipe 2 near the top. The openings of the U-shaped sleeves 3 are welded outwards to the inner wall of the inner steel pipe 2, and the bottoms of the U-shaped sleeves 3 are closed. A column 4 is fixedly inserted into each U-shaped sleeve 3, so that the column 4 fits against the inner wall of the inner steel pipe 2. When the upper and lower sections of the steel-concrete composite column pier are spliced, the inner steel pipe 2 of the upper section of the steel-concrete composite column pier is fitted over all the columns 4 of the lower section of the steel-concrete composite column pier for coaxial positioning.

[0022] It should be noted that when splicing two adjacent steel-concrete composite column piers, the inner steel pipe 2 of the upper steel-concrete composite column pier is first fitted onto all the columns 4 using lifting equipment. At this time, the upper and lower steel-concrete composite column piers are placed coaxially, which achieves the effect of pre-positioning and prevents deviations between the upper and lower steel-concrete composite column piers after they have been overlapped, thus reducing the difficulty of the connection work.

[0023] The outer layer includes an outer steel pipe 5, on which a connecting component is installed to achieve splicing and fixing of the upper and lower sections of the steel pipe concrete column pier.

[0024] The connecting assembly includes a Y-shaped bracket 6, which is welded to the outer wall of the outer steel pipe 5 near the top. The opening of the Y-shaped bracket 6 faces outward and has a uniform inner width. The Y-shaped bracket 6 has an elongated hole 7 extending vertically. A knife-shaped bracket 8 is welded to the outer wall of the outer steel pipe 5 near the bottom. The knife-shaped bracket 8 has a circular hole 9 corresponding to the elongated hole 7.

[0025] It should be noted that after the inner steel pipe 2 in the upper steel-concrete composite column pier is first fitted onto the column 4, the upper steel-concrete composite column pier can be rotated so that the knife-shaped frame 8 in the upper steel-concrete composite column pier is aligned with the Y-shaped bracket 6 in the lower steel-concrete composite column pier. Then, simply lower the upper steel-concrete composite column pier so that the upper and lower steel-concrete composite column piers are connected to each other. At this time, the elongated hole 7 and the round hole 9 are set accordingly. By setting the elongated hole 7, the positional requirements of the Y-shaped bracket 6 and the knife-shaped frame 8 are reduced when the Y-shaped bracket 6, the knife-shaped frame 8 and the outer steel pipe 5 are welded and fixed, so that the distance requirement between the Y-shaped bracket 6 and the knife-shaped frame 8 has the same error range as the length dimension of the elongated hole 7.

[0026] When assembling the upper and lower sections of the steel-concrete composite column pier, the knife-shaped bracket 8 is inserted into the opening of the Y-shaped bracket 6 and locked together using a bolt and nut assembly. Specifically, bolts 10 pass through the elongated hole 7 and the round hole 9, and nuts 11 are threaded onto both ends of the bolts 10 for locking and securing. Each Y-shaped bracket 6 is connected to the knife-shaped bracket 8 using only one bolt 10 and nut 11, making the operation simple.

[0027] The number of U-shaped sleeves 3 is at least 2, but not limited to 2, and preferably 4, so that the axis of the upper steel-concrete column pier coincides with the axis of the lower steel-concrete column pier.

[0028] Furthermore, the connecting assembly includes at least two Y-shaped supports 6 and at least two knife-shaped supports 8. Preferably, there are four Y-shaped supports 6 and four knife-shaped supports 8, and the knife-shaped supports 8 and Y-shaped supports 6 are arranged vertically opposite each other to ensure the connection quality between the upper steel-concrete composite column pier and the lower steel-concrete composite column pier.

[0029] The top surface of the U-shaped sleeve 3 is located at the top of the inner steel pipe 2. The column 4 is inserted into the U-shaped sleeve 3 and welded to the inner steel pipe 2. The top of the column 4 is 10-20cm higher than the top of the inner steel pipe 2. Furthermore, the column 4 is close to and tangent to the inner steel pipe 2. There are two welds between the column 4 and the inner steel pipe 2, which are symmetrically set on the left and right sides of the tangent line to further ensure the splicing quality.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A segmentally assembleable concrete-filled steel tube column pier, comprising an intermediate concrete layer (1), characterized in that, The intermediate concrete layer (1) is provided with a connecting outer layer on the outside and a prepositioning inner layer on the inside. The intermediate concrete layer (1) is poured between the connecting outer layer and the prepositioning inner layer to form a whole. The pre-positioning inner layer includes an inner steel pipe (2). At least two U-shaped sleeves (3) are fixedly installed on the inner wall of the inner steel pipe (2) near the top, and are evenly distributed around the axis of the inner steel pipe (2). The openings of the U-shaped sleeves (3) are welded to the inner wall of the inner steel pipe (2) with the openings facing outwards. The bottom of the U-shaped sleeves (3) is closed. Each U-shaped sleeve (3) is fixedly inserted with a column (4), so that the column (4) fits against the inner wall of the inner steel pipe (2). When the upper and lower sections of the steel pipe concrete column pier are spliced, the inner steel pipe (2) of the upper section of the steel pipe concrete column pier is sleeved on all the columns (4) of the lower section of the steel pipe concrete column pier to achieve coaxial positioning. The connecting outer layer includes an outer steel pipe (5), on which a connecting component is installed to realize the splicing and fixing of the upper and lower sections of the steel pipe concrete column pier.

2. The segmentally rapidly assembled steel-concrete composite column pier according to claim 1, characterized in that, The connecting assembly includes at least two Y-shaped brackets (6) and at least two knife-shaped brackets (8). The Y-shaped brackets (6) are welded to the outer wall of the outer steel pipe (5) near the top. The openings of the Y-shaped brackets (6) face outward and have a uniform inner width. The Y-shaped brackets (6) have elongated holes (7) extending vertically. The outer wall of the outer steel pipe (5) is welded to the knife-shaped brackets (8) near the bottom. The knife-shaped brackets (8) have round holes (9) corresponding to the elongated holes (7). When the upper and lower sections of the steel pipe concrete column pier are assembled, the knife-shaped brackets (8) are inserted into the openings of the Y-shaped brackets (6) and locked together by bolt and nut assemblies.

3. The segmentally rapidly assembled steel-concrete composite column pier according to claim 1, characterized in that, The number of the U-shaped sleeves (3) is 4.

4. The segmentally rapidly assembled steel-concrete composite column pier according to claim 2, characterized in that, The number of Y-shaped brackets (6) is 4, the number of knife-shaped brackets (8) is 4, and the knife-shaped brackets (8) and the Y-shaped brackets (6) are arranged vertically opposite each other.

5. The segmentally rapidly assembled steel-concrete composite column pier according to claim 1, characterized in that, The top surface of the U-shaped sleeve (3) is lower than the top of the inner steel pipe (2). The column (4) is inserted into the U-shaped sleeve (3) and welded to the inner steel pipe (2). The top of the column (4) is 10-20cm higher than the top of the inner steel pipe (2).

6. The segmentally rapidly assembled steel-concrete composite column pier according to claim 5, characterized in that, The column (4) is attached to and tangent to the inner steel pipe (2). There are two welds between the column (4) and the inner steel pipe (2), which are symmetrically arranged on the left and right sides of the tangent line.

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