Double-stand-column bridge cable bent tower structure

Abstract

The utility model provides a double-stand-column bridge cable bent tower structure which comprises two stand columns distributed in the longitudinal direction of a bridge, the upper ends of the two stand columns are folded together, a vertical folding face extending in the transverse direction of the bridge is formed at the folding position of the two stand columns, and the side faces, away from the vertical folding face, of the folding portion of the two stand columns are inclined faces. A plurality of anchor cables which are sequentially distributed from top to bottom are connected to the side face, away from the vertical folding face side, of the folding portion of the two stand columns, each stand column comprises a shell of a steel structure and concrete poured in the shell, and the shell is formed by splicing a plurality of sections distributed in the vertical direction. The side face, facing the vertical folding face side, of the upper end, located below the folding portion of the two stand columns, of each stand column is a curved face with the upper end bent towards the vertical folding face. The utility model aims to provide the double-upright-column bridge cable bent tower structure with high stress capacity so as to replace an existing single-column cable bent tower and overcome the problem that the single-upright-column cable bent tower is small in stress.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, and in particular to a double-column bridge cable tower structure. Background Technology

[0002] There are many ways to fix bridge decks during bridge construction. Some methods involve supporting and fixing the decks with piers, but this has the drawback of small spans for each bridge segment. To increase the span of a single bridge segment, a cable-stayed double-span system is adopted. The cable-stayed double-span system requires the construction of pylons to fix the upper ends of the anchor cables (anchor rods). Existing pylons use single-column structures, which are convenient to construct but have low load-bearing capacity. Utility Model Content

[0003] The present invention aims to provide a double-column bridge tower structure with high load-bearing capacity to replace the existing single-column tower and overcome the problem of small load-bearing capacity of the single-column tower.

[0004] To achieve the above objectives, this utility model employs the following technology: a double-column bridge tower structure, characterized in that it comprises two columns distributed along the longitudinal direction of the bridge, the upper ends of the two columns being joined together, forming a vertical joining surface extending along the transverse direction of the bridge at the joining point of the two columns. The side of the column located at the joining point of the two columns away from the vertical joining surface is an inclined surface. A plurality of anchor cables, distributed sequentially from top to bottom, are connected to the side of the column located at the joining point of the two columns away from the vertical joining surface. The column includes a steel outer shell and concrete poured within the outer shell. The outer shell is assembled from several segments distributed vertically. The side of the column located at the upper end of the lower portion of the joining point of the two columns, facing the vertical joining surface, is a curved surface with its upper end bent towards the vertical joining surface. The structure of this utility model allows the tower to withstand greater tensile force from the anchor cables during use, resulting in good structural strength. The protective outer shell enhances the strength of the columns and reduces their susceptibility to damage.

[0005] Preferably, a steel pin extending into the concrete is fixed to the inner surface of the segment. This improves the reliability of the connection between the shell and the concrete, making them a better integrated whole.

[0006] Preferably, the segment is a hexagonal prism structure with two sides extending transversely and distributed longitudinally. This makes the column less prone to deformation when subjected to tension from the anchor cables, thus improving the load-bearing capacity of the tower.

[0007] Preferably, the two ends of the sidewalls of the segment are chamfered, and vertical grooves are formed at the joints of adjacent sidewalls of the segment. Weld lines, formed by welding the sidewalls of the segments together, are provided within the vertical grooves. This makes the connection between the various sides of the segment more reliable.

[0008] Preferably, the welding line fills the vertical groove. This improves the connection strength between the various sides of the segment.

[0009] Preferably, the column has several recesses distributed vertically on the side away from the vertical joining surface of the joined portion of the two columns. The bottom wall of each recess is an upwardly sloping surface. The upper end of the anchor cable extends through the bottom wall of each recess and into the interior of the column to be anchored together. This improves the reliability of the connection between the anchor cable and the column.

[0010] Preferably, the upper ends of the anchor cables on the two columns are connected together in a one-to-one correspondence. This improves the reliability of the connection between the anchor cables and the columns.

[0011] Preferably, the upper ends of the anchor cables on the two columns are integrally formed, corresponding to each other. This results in better reliability when the anchor cables are connected together.

[0012] Preferably, the outer shell of the section where the two columns connect to the anchor cable is open towards the vertical closing surface, and the concrete inside the section where the two columns connect to the anchor cable is poured together. This makes the two columns more reliable and thus a single unit, resulting in better stress distribution.

[0013] Preferably, the portion of the anchor cable located inside the column includes a downward-arching first arc segment and an upward-arching second arc segment, which are tangent to each other. The second arc segments of the anchor cables on both columns are connected one-to-one, and the second arc segments of the two cables lie on the same circle. This improves the reliability of the connection between the anchor cable and the column, and enhances the column's ability to withstand the force of the cables.

[0014] Beneficial effects: High load-bearing capacity, novel structure, and durable. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the present invention when viewed along the transverse direction of the bridge;

[0016] Figure 2 for Figure 1 A magnified view of a portion of point A;

[0017] Figure 3 This is a schematic diagram of the cross-section of the lower end of the column;

[0018] Figure 4 for Figure 3 A magnified view of a portion of point B.

[0019] In the diagram: 1. Column 1; 2. Upper end of column 2; 3. Side of column 1 away from the vertical closure surface of the closure section of the two columns 4. Anchor cable 5. Shell 6. Concrete 7. Segment 8. Side of column 1 facing the vertical closure surface of the upper end of the lower part of the closure section of the two columns 9. Steel pin 10. Welding line 11. Recess 12. Bottom wall of recess 13. First arc segment 14. Second arc segment 15. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] See Figures 1 to 4A double-column bridge tower structure includes two columns 1 distributed along the longitudinal direction of the bridge. The upper ends 2 of the two columns are joined together, forming a vertical joining surface 3 extending along the transverse direction of the bridge. The side 4 of the column located at the joining part of the two columns, away from the vertical joining surface, is inclined. Several anchor cables 5 are connected to the side of the column located at the joining part of the two columns, away from the vertical joining surface, from top to bottom. The column includes a steel shell 6 and concrete 7 poured inside the shell. The shell is spliced ​​together from several segments 8 distributed vertically. The side 9 of the column located at the upper end of the lower part of the joining part of the two columns, facing the vertical joining surface, is a curved surface with the upper end bent towards the vertical joining surface. Steel pins 10 extending into the concrete are fixed to the inner surface of the segments. The segments are hexagonal prism structures, with two sides extending along the transverse direction of the bridge and distributed along the longitudinal direction. The two ends of the sidewalls of the segment are chamfered. Vertical grooves are formed at the junctions of adjacent sidewalls of the segments, and welding lines 11, formed by welding the sidewalls of the segments together, are provided within the vertical grooves. The welding lines fill the vertical grooves. On the side of the column located away from the vertical merging surface at the junction of the two columns, several recesses 12 are distributed vertically. The bottom wall 13 of each recess is an upwardly sloping surface. The upper ends of the anchor cables extend through the bottom wall of the recesses and are anchored together inside the columns. The upper ends of the anchor cables on the two columns are connected together, specifically, the upper ends of the anchor cables on the two columns are integrally formed together. The outer shell of the portion of the two columns connected to the anchor cables is open towards the vertical merging surface, and the concrete within the portion of the two columns connected to the anchor cables is poured together. The portion of the anchor cable located inside the column includes a downward-arching first arc segment 14 and an upward-arching second arc segment 15. The first arc segment and the second arc segment are tangent to each other. The second arc segments of the anchor cables of the two columns are connected one-to-one, and the second arc segments of the two cables are located on the same circle.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0023] 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 double-column bridge pylon structure, characterized in that, The structure includes two columns distributed along the longitudinal direction of the bridge. The upper ends of the two columns are joined together, forming a vertical joining surface extending along the transverse direction of the bridge. The side of the column located at the joining part of the two columns away from the vertical joining surface is an inclined surface. Several anchor cables are connected to the side of the column located at the joining part of the two columns away from the vertical joining surface, arranged sequentially from top to bottom. The column includes a steel shell and concrete poured inside the shell. The shell is spliced ​​together from several segments distributed vertically. The side of the column located at the upper end of the lower part of the joining part of the two columns facing the vertical joining surface is a curved surface with the upper end curving towards the vertical joining surface.

2. The double-column bridge pylon structure according to claim 1, characterized in that, A steel pin extending into the concrete is fixed to the inner surface of the segment.

3. A double-column bridge pylon structure according to claim 1 or 2, characterized in that, The segment is a hexagonal prism structure, and the segment has two sides extending along the transverse direction of the bridge and distributed along the longitudinal direction of the bridge.

4. A double-column bridge tower structure according to claim 3, characterized in that, The two ends of the sidewall of the segment are provided with chamfered surfaces, and the connection between adjacent sidewalls of the segment forms a vertical groove. The vertical groove is provided with a welding line formed by welding the sidewalls of the segment together.

5. A double-column bridge pylon structure according to claim 4, characterized in that, The welding line fills the vertical groove.

6. A double-column bridge pylon structure according to claim 1, characterized in that, The column has several recesses distributed in the vertical direction on the side away from the vertical joining surface of the two columns where they are joined. The bottom wall of the recess is an upward sloping surface. The upper end of the anchor cable extends through the bottom wall of the recess and enters the interior of the column to be anchored together.

7. A double-column bridge pylon structure according to claim 6, characterized in that, The upper ends of the anchor cables on the two columns are connected together in a corresponding manner.

8. A double-column bridge pylon structure according to claim 7, characterized in that, The upper ends of the anchor cables on the two columns are integrally formed, corresponding to each other.

9. A double-column bridge pylon structure according to claim 7 or 8, characterized in that, The outer shell of the part where the two columns are connected to the anchor cable is open towards the vertical closing surface, and the concrete inside the part where the two columns are connected to the anchor cable is poured together.

10. A double-column bridge pylon structure according to claim 9, characterized in that, The portion of the anchor cable located inside the column includes a first arc segment that arches downwards and a second arc segment that arches upwards. The first arc segment and the second arc segment are tangent to each other. The second arc segments of the anchor cables of the two columns are connected one-to-one, and the second arc segments of the two cables are located on the same circle.

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