A prefabricated trestle frame column and a trestle structure

Abstract

The application relates to the technical field of trestles, and provides a trestle prefabricated frame column and a trestle structure. The trestle prefabricated frame column comprises a steel bar framework assembly, a plurality of main steels and a plurality of stirrups, the plurality of main steels and the plurality of stirrups form a prefabricated framework, the prefabricated framework comprises a column framework and a beam framework connected with the column framework, and the connecting flange is connected to one end of the column framework; and concrete is poured into the steel bar framework assembly, the column framework forms a connecting column, and the beam framework forms a connecting beam. When the trestle is constructed, the lower prefabricated frame column is fixed by using the trestle prefabricated frame column, then the upper prefabricated frame column is hoisted, and finally, the connecting flanges of the upper and lower prefabricated frame columns are connected in the air, and the connecting beams connecting the two lower prefabricated frame columns and the connecting beams connecting the two upper prefabricated frame columns are poured, so that the construction efficiency is high, the high-altitude pouring operation is reduced, and the durability of the trestle structure is guaranteed.

Description

Technical Field

[0001] This application relates to the field of trestle technology, and in particular to a prefabricated frame column for a trestle and a trestle structure. Background Technology

[0002] A trestle is a temporary bridge structure built in civil engineering for transporting materials, equipment, and personnel. For example, in the coal and power industry, the coal conveyor trestle is a core structure of the coal transportation system. Its frame columns need to withstand dynamic loads, mechanical vibrations, and corrosion from the open-air environment for a long time, requiring extremely high structural durability and construction efficiency.

[0003] In existing technologies, the design and construction of trestle bridges mostly adopts cast-in-place concrete columns. However, due to the many problems faced by high-altitude cast-in-place construction, such as complex formwork support, long curing period, prominent safety hazards of high-altitude operations, and unstable concrete forming quality of concrete frame columns, the durability of the trestle bridge structure is easily affected, and the construction efficiency is low. Utility Model Content

[0004] This application provides a prefabricated frame column and trestle structure for a trestle, in order to solve the technical problem that the design and construction of trestle bridges in the prior art can easily affect the durability and construction efficiency of the trestle bridge.

[0005] To address the aforementioned problems, this application provides a prefabricated frame column for a trestle bridge, the prefabricated frame column comprising: A steel reinforcement cage assembly includes a connecting flange, several main bars and several stirrups, the several main bars and several stirrups forming a precast cage, the precast cage including a column cage and a beam cage connected to the column cage, and the connecting flange connected to one end of the column cage; Concrete is poured into the steel reinforcement skeleton assembly, the column skeleton forming a connecting column, and the beam skeleton forming a connecting beam.

[0006] In some embodiments, the connecting flange includes a flange and an annular rib located on one side of the flange, and the main reinforcement at one end of the column frame is located within the annular rib.

[0007] In some embodiments, the connecting flange further includes a plurality of first radial ribs, which are distributed along the outer periphery of the annular rib.

[0008] In some embodiments, the connecting flange further includes a plurality of second radial ribs, which are distributed along the inner circumference of the annular rib.

[0009] In some embodiments, the cavity enclosed by the annular rib is filled with concrete.

[0010] In some embodiments, the outer surface of the connecting flange has a galvanized layer.

[0011] In some embodiments, the thickness d of the zinc plating layer is ≥80 μm.

[0012] In some embodiments, a plurality of the main reinforcing bars extend from the end face of the connecting beam away from the connecting column. When one of the connecting beams in the precast frame column of the trestle is located at the end of the connecting column away from the connecting flange, the precast frame column of the trestle forms an upper precast frame column; When the connecting beams in the prefabricated frame column of the trestle are all located in the middle area of ​​the connecting column, and the end of the connecting column away from the connecting flange forms a fixed end, the prefabricated frame column of the trestle forms a lower prefabricated frame column, wherein the fixed end is used to vertically fix the connecting column.

[0013] This application also provides a trestle structure, which includes two upper prefabricated frame columns as described above and two lower prefabricated frame columns as described above. The fixed end of the lower prefabricated frame column is fixed to the ground, and the other end is connected to the upper prefabricated frame column through the connecting flange. The connecting beam between the two lower prefabricated frame columns and the connecting beam between the two upper prefabricated frame columns are correspondingly connected.

[0014] The beneficial effects of the embodiments of this application are as follows: When constructing a trestle bridge, the entire trestle bridge can be divided into four prefabricated frame column parts according to the structural design of the trestle bridge. By using the prefabricated frame columns of the trestle bridge provided in this application, during construction, the lower prefabricated frame columns can be fixed first, and then the upper prefabricated frame columns can be hoisted. Afterwards, it is only necessary to connect the connecting flanges of the upper and lower prefabricated frame columns in the air, and pour the connecting beams connecting the two lower prefabricated frame columns and the two upper prefabricated frame columns. The construction efficiency is high, the high-altitude pouring work is reduced, and the durability of the trestle bridge structure is guaranteed.

[0015] By including a flange in the connecting flange of the precast frame column of the trestle provided in this application, and setting an annular rib on one side of the flange, the main reinforcement at one end of the column skeleton can be located inside the annular rib. When pouring concrete, the cavity enclosed by the annular rib is also filled with concrete, ensuring the structural strength of the connection between the connecting flange and the connecting column.

[0016] Furthermore, by combining the annular rib with the outer first radial rib and the inner second radial rib, the stress concentration caused by dynamic loads on the flange can be effectively dispersed, thereby improving the fatigue life of the connection nodes in the trestle structure. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a structural schematic diagram of a prefabricated frame column for a trestle provided in one embodiment of this application; Figure 2 This is a structural schematic diagram of a prefabricated frame column for a trestle provided in another embodiment of this application; Figure 3 This is a structural schematic diagram of the steel reinforcement skeleton assembly in the prefabricated frame column of the trestle bridge provided in one embodiment of this application; Figure 4 This is a structural schematic diagram of the steel reinforcement skeleton assembly in the prefabricated frame column of the trestle bridge provided in another embodiment of this application; Figure 5 This is a schematic diagram of the structure of a connecting flange provided in an embodiment of this application; Figure 6 yes Figure 3 Enlarged view of point A in the middle; Figure 7 This is a schematic diagram of a trestle structure formed by connecting prefabricated frame columns according to an embodiment of this application; Figure 8 This is a schematic diagram of a trestle structure provided in an embodiment of this application.

[0018] In the diagram: 100, precast frame column of the trestle bridge; 10, steel reinforcement skeleton assembly; 11, column skeleton; 12, beam skeleton; 13, connecting flange; 131, flange; 132, annular rib; 133, first radial rib; 134, second radial rib; 14, main reinforcement; 15, stirrup; 21, connecting column; 22, connecting beam; 101, upper precast frame column; 102, lower precast frame column; 102a, fixed end; 1000, trestle bridge structure. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It is understood that the specific embodiments described herein are only for explaining this application and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings, not all structures. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0020] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] Please see Figure 1 , Figure 2 as well as Figure 7 and Figure 8 This application provides a prefabricated frame column 100 for constructing a trestle. The specific application and type of the trestle are not limited in this embodiment. Taking a coal conveying trestle as an example, a coal conveying trestle generally includes two columns connected by several crossbeams, dividing the entire trestle into four prefabricated frame column sections. These four prefabricated frame column sections are then assembled together to form the trestle structure 1000. In this embodiment, the prefabricated frame column 100 is described as one-quarter of the entire coal conveying trestle, but it is not limited to this. For example, depending on the overall structure of the trestle, the prefabricated frame column 100 can also be one-half, one-sixth, one-seventh, or one-eighth of the trestle.

[0023] Please refer to the following: Figure 3 and Figure 4The precast frame column 100 of the trestle bridge includes a steel reinforcement skeleton assembly 10 and concrete. The steel reinforcement skeleton assembly 10 includes a connecting flange 13, several main reinforcement bars 14, and several stirrups 15. The main reinforcement bars 14 and stirrups 15 form a precast skeleton, which includes a column skeleton 11 and a beam skeleton 12 connected to the column skeleton 11. The connecting flange 13 is connected to one end of the column skeleton 11. After concrete is poured onto the steel reinforcement skeleton assembly 10, the precast frame column 100 of the trestle bridge is formed. The column skeleton 11 in the precast skeleton forms a connecting column 21, and the beam skeleton 12 forms a connecting beam 22. By using the prefabricated frame column 100 of the trestle provided in this application, during construction, the lower prefabricated frame column 100 can be fixed first, and then the upper prefabricated frame column 100 can be hoisted. After that, it is only necessary to connect the connecting flange 13 of the upper and lower prefabricated frame columns 100 in the air, and then pour the connecting beam 22 connecting the two lower prefabricated frame columns 100 and the two upper prefabricated frame columns 100. The construction efficiency is high, the high-altitude pouring work is reduced, and the durability of the trestle structure 1000 is guaranteed.

[0024] like Figure 3 and Figure 4 As shown, the steel reinforcement frame assembly 10 is a cast-in-place frame constructed for the precast frame columns 100 of the trestle bridge. It can be understood that its shape and structure correspond to the shape and structure of the precast frame columns 100 of the trestle bridge. Based on the structure of the trestle bridge, it can be understood that the beam frames 12 connected to the column frame 11 are located on one side of the column frame 11, and when multiple beam frames 12 are installed on the column frame 11, the multiple beam frames 12 are distributed on the same side of the column frame 11.

[0025] The connecting flange 13 is connected to one end of the column frame 11 and is used to connect the connecting columns 21 of the two prefabricated frame columns 100 of the trestle. The connecting flange 13 can be connected to the main reinforcement 14 at one end of the column frame 11. For example, the flange 131 of the connecting flange 13 can be provided with mounting holes that mate with the main reinforcement 14. The end of the main reinforcement 14 is inserted into the mounting hole and then the main reinforcement 14 is welded to the flange 131.

[0026] Please refer to the following: Figure 5 and Figure 6In some embodiments, the connecting flange 13, in addition to the flange 131, also includes an annular rib 132 located on one side of the flange 131, and the main reinforcing bars 14 at one end of the column frame 11 are all located within the annular rib 132. This application embodiment does not limit the cross-sectional shape of the annular rib 132; it can be circular, rectangular, elliptical, triangular, etc., specifically corresponding to the cross-sectional shape of the connecting column 21. For example, in this embodiment, both the annular rib 132 and the connecting column 21 have rectangular cross-sectional shapes. By providing an annular rib 132 on one side of the connecting flange 13, the bending resistance of the flange plate can be increased, improving the strength of the flange 131. Furthermore, during concrete pouring, the cavity enclosed by the annular rib 132 can be filled with concrete, ensuring the structural strength of the connection between the connecting flange 13 and the connecting column 21.

[0027] like Figure 5 As shown, in some embodiments, the connecting flange 13 further includes a plurality of first radial ribs 133, which are distributed along the outer periphery of the annular rib 132. One side of the first radial rib 133 is connected to the outer peripheral surface of the annular rib 132, and the adjacent side is connected to the flange 13. In this embodiment, the specific number of first radial ribs 133 on each side of the annular rib 132 is not limited; for example, it can be set according to the stress on the flange 131. It should be understood that the first radial ribs 133 should avoid the bolt holes at the edge of the flange 131. In some embodiments, the connecting flange 13 may also include a plurality of second radial ribs 134, which are distributed along the inner periphery of the annular rib 132. One side of the second radial rib 134 is connected to the inner peripheral surface of the annular rib 132, and the adjacent side is connected to the flange 13. In this embodiment, the specific number of second radial ribs 134 is also not limited. It should be understood that the second radial ribs 134 should avoid the main reinforcing bars 14 of the precast frame. By combining the annular rib plate 132 with the first radial rib plate 133 and the second radial rib plate 134, the connecting flange 13 can effectively disperse the stress concentration caused by the dynamic load on the flange 131, thereby improving the fatigue life of the connection node in the trestle structure 1000.

[0028] In some embodiments, the outer surface of the connecting flange 13 may also be provided with a zinc plating layer, the thickness of which can be d≧80μm. Through the sacrificial anodic protection of the zinc plating layer, the electrochemical corrosion path of the connecting flange 13 is blocked, effectively ensuring the service life of the connecting flange 13.

[0029] like Figure 7 As shown, when the prefabricated frame columns 100 are used to construct the trestle, adjacent connecting columns 21 are connected by connecting flanges 13. The connecting beams 22 between two prefabricated frame columns 100 can be connected by main reinforcement bars 14 and stirrups 15 to form the beam skeleton 12 of the two connecting beams 22, which are then cast together with concrete. In some embodiments, such as Figure 1 and Figure 2 As shown, several main reinforcement bars 14 can be extended from the end face of the connecting beam 22 in the prefabricated frame column 100 of the trestle bridge away from the connecting column 21, so as to facilitate the connection of the connecting beam 22 between the two prefabricated frame columns 100 of the trestle bridge.

[0030] like Figure 1 and Figure 7 As shown, in some embodiments, when a connecting beam 22 in the prefabricated frame column 100 of the trestle is located at the end of the connecting column 21 away from the connecting flange 13, the prefabricated frame column 100 forms an upper prefabricated frame column 101. During trestle construction, the upper prefabricated frame column 101 forms the upper part of the trestle. The connecting beam 22 in the upper prefabricated frame column 101 located at the end of the connecting column 21 away from the connecting flange 13 forms the top beam at the uppermost end of the trestle. During pouring, the end face of the upper prefabricated frame column 101 away from the connecting flange 13 can be flush with the surface of the top beam. Figure 2 and Figure 7 As shown, when the connecting beams 22 in the precast frame column 100 of the trestle are all located in the middle area of ​​the connecting column 21, and the end of the connecting column 21 away from the connecting flange 13 forms a fixed end 102a, the precast frame column 100 of the trestle forms the lower precast frame column 102. The fixed end 102a in the lower precast frame column 102 is used to fix the connecting column 21 in the lower precast frame column 102 to the ground. The lower precast frame column 102 is used to form the lower part of the trestle. Specifically, during construction, the fixed end 102a of the lower precast frame column 102 can be fixed to the ground first, and then the upper precast frame column 101 can be lifted so that the connecting flange 13 of the upper precast frame column 101 is connected to the connecting flange 13 of the lower precast frame column 102, as shown. Figure 7 and Figure 8 As shown, after the upper precast frame column 101 and the lower precast frame column 102 are connected, the connecting beams 22 of the two lower precast frame columns 102 and the connecting beams 22 of the two upper precast frame columns 101 are connected to each other through the main reinforcement 14 and the stirrups 15, and then the concrete can be poured.

[0031] like Figure 7 and Figure 8 As shown, in some embodiments, this application also provides a trestle structure 1000, which includes two upper prefabricated frame columns 101 as described in the above embodiments and two lower prefabricated frame columns 102 as described in the above embodiments. The two lower prefabricated frame columns 102 are arranged opposite each other on one side with connecting beams 22, and are fixed to the ground by fixed ends 102a. The connecting beams 22 between the two lower prefabricated frame columns 102 are interconnected to form the lower part of the trestle structure 1000. The two upper prefabricated frame columns 101 are arranged opposite each other on one side with connecting beams 22, and are connected to the lower prefabricated frame columns 102 by connecting flanges 13. The connecting beams 22 between the two upper prefabricated frame columns 101 are interconnected to form the upper part of the trestle structure 1000.

[0032] The trestle structure 1000 provided in this application adopts all the technical solutions of the trestle prefabricated frame column 100 in the above embodiments. Therefore, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments of the trestle prefabricated frame column 100, which will not be repeated here.

[0033] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A prefabricated frame column for a trestle bridge, characterized in that, The prefabricated frame columns of the trestle bridge include: A steel reinforcement cage assembly includes a connecting flange, several main bars and several stirrups, the several main bars and several stirrups forming a precast cage, the precast cage including a column cage and a beam cage connected to the column cage, and the connecting flange connected to one end of the column cage; Concrete is poured into the steel reinforcement skeleton assembly, the column skeleton forming a connecting column, and the beam skeleton forming a connecting beam.

2. The prefabricated frame column of the trestle bridge according to claim 1, characterized in that, The connecting flange includes a flange plate and an annular rib plate located on one side of the flange plate, and the main reinforcement at one end of the column frame is located inside the annular rib plate.

3. The prefabricated frame column of the trestle bridge according to claim 2, characterized in that, The connecting flange also includes a plurality of first radial ribs, which are distributed along the outer periphery of the annular rib.

4. The prefabricated frame column of the trestle bridge according to claim 3, characterized in that, The connecting flange also includes a plurality of second radial ribs, which are distributed along the inner circumference of the annular rib.

5. The prefabricated frame column of the trestle bridge according to claim 2, characterized in that, The cavity enclosed by the annular ribs is filled with the concrete.

6. The prefabricated frame column of the trestle bridge according to claim 1, characterized in that, The outer surface of the connecting flange has a galvanized layer.

7. The prefabricated frame column of the trestle bridge according to claim 6, characterized in that, The thickness of the zinc plating layer is d≧80μm.

8. The prefabricated frame column of the trestle bridge according to any one of claims 1-7, characterized in that, Several main reinforcing bars extend from the end face of the connecting beam away from the connecting column.

9. The prefabricated frame column of the trestle bridge according to claim 8, characterized in that, When one of the connecting beams in the prefabricated frame column of the trestle is located at the end of the connecting column away from the connecting flange, the prefabricated frame column of the trestle forms an upper prefabricated frame column. When the connecting beams in the prefabricated frame column of the trestle are all located in the middle area of ​​the connecting column, and the end of the connecting column away from the connecting flange forms a fixed end, the prefabricated frame column of the trestle forms a lower prefabricated frame column, wherein the fixed end is used to fix the connecting column.

10. A trestle structure, characterized in that, The trestle structure includes two upper prefabricated frame columns as described in claim 9 and two lower prefabricated frame columns as described in claim 9. The fixed end of the lower prefabricated frame column is fixed to the ground, and the other end is connected to the upper prefabricated frame column through the connecting flange. The connecting beam between the two lower prefabricated frame columns and the connecting beam between the two upper prefabricated frame columns are correspondingly connected.

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