Spatial double-cable-plane cable-stayed bridge

Abstract

The utility model provides a spatial double-cable-plane cable-stayed bridge which comprises a tower column and further comprises a first main beam and a second main beam. A second main beam; a first stay cable group; the first stay cable group and the second stay cable group are symmetrically arranged relative to the tower column, and a first included angle larger than 90 degrees and smaller than 180 degrees is formed between the first stay cable group and the second stay cable group; the third stay cable set and the first stay cable set are symmetrically arranged about the tower column, and a second included angle larger than 0 degree and smaller than 90 degrees is formed between the third stay cable set and the first stay cable set; the fourth stay cable group and the third stay cable group are symmetrically arranged relative to the tower column, and the fourth stay cable group and the second stay cable group are symmetrically arranged relative to the tower column; wherein the first stay cable is perpendicular to the first angle edge, the second stay cable is perpendicular to the second angle edge, the third stay cable is perpendicular to the third angle edge, and the fourth stay cable is perpendicular to the fourth angle edge. The stability of the bridge tower can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cable-stayed bridges, in particular to a spatial double-cable-plane cable-stayed bridge. Background Art

[0002] The tower of a cable-stayed bridge is the main load-bearing member that bears the vertical load of the entire bridge. It is mainly subjected to compression in the vertical direction and tension in the horizontal direction. Traditional cable-stayed bridge towers have many structural forms, such as A-shaped, gate-shaped, H-shaped, inverted Y-shaped, and single-column. Among them, A-shaped, gate-shaped, H-shaped, and inverted Y-shaped towers generally anchor a pair of cable-stayed cables at the same horizontal height, so they can better adapt to the parallel cable plane or spatial cable plane arrangement of cable-stayed bridges. However, since the above-mentioned towers are all double-limbed in the horizontal direction near the bridge deck, when the bridge deck height is low, there is no condition for narrowing in the horizontal direction. Usually, the bridge tower arrangement needs to occupy more horizontal space. Under this condition, the single-column tower has a significant advantage.

[0003] Because traditional single-column towers are mostly rectangular in cross-section, towers with spatial dual-cable planes require four cables to be anchored in the same cross-section at the same height. Furthermore, the cables on the same side have a large horizontal angle, and the cables are anchored near the corners of the rectangular tower, which is not conducive to the configuration of horizontal reinforcement in the tower anchorage area. Therefore, traditional single-column towers are well suited to central parallel cable plane arrangements, but have limitations with spatial dual-cable plane arrangements. Central parallel cable plane arrangements also result in relatively poor main beam and tower stability, and are less conducive to lateral loads when the bridge width is large.

[0004] In view of this, it is necessary to develop a spatial double-cable-plane cable-stayed bridge to improve the stability of the single-column tower cable-stayed bridge. Utility Model Content

[0005] The utility model aims to provide a spatial double-cable-plane cable-stayed bridge to solve the problem of poor stability of tower columns of existing spatial double-cable-plane cable-stayed bridges.

[0006] In order to solve the above technical problems, the utility model provides a spatial double-cable-plane cable-stayed bridge, comprising a tower column, and also comprising: a first main beam arranged on one side of the tower column and arranged along the longitudinal bridge direction; a second main beam arranged on the other side of the tower column and arranged along the longitudinal bridge direction; a first inclined cable group comprising a plurality of first inclined cables, one end of the first inclined cable is connected to the first main beam, and the other end is connected to the tower column; a second inclined cable group comprising a plurality of second inclined cables, one end of the second inclined cable is connected to the first main beam, and the other end is connected to the tower column, and the first inclined cable group and the second inclined cable group are symmetrically arranged about the tower column, and a first angle greater than 90° and less than 180° is formed between the first inclined cable group and the second inclined cable group; a third inclined cable group comprising a plurality of third inclined cables, one end of the third inclined cable is connected to the second main beam, and the other end is connected to the The tower column is connected, the third oblique cable group and the first oblique cable group are symmetrically arranged about the tower column, and the third oblique cable group and the first oblique cable group have a second angle greater than 0° and less than 90° between them; the fourth oblique cable group includes a plurality of fourth oblique cables, one end of the fourth oblique cable is connected to the second main beam, and the other end is connected to the tower column, and the fourth oblique cable group and the third oblique cable group are symmetrically arranged about the tower column, and the fourth oblique cable group and the second oblique cable group are symmetrically arranged about the tower column; wherein, the horizontal section of the tower column has a first corner side, a second corner side, a third corner side and a fourth corner side arranged around the center of the tower column, the first oblique cable is perpendicular to the first corner side, the second oblique cable is perpendicular to the second corner side, the third oblique cable is perpendicular to the third corner side, and the fourth oblique cable is perpendicular to the fourth corner side.

[0007] Optionally, the tower column is a single-box single-chamber structure.

[0008] Optionally, the tower column includes a concrete body and tower wall stirrups arranged in the concrete body.

[0009] Optionally, the inner wall of the horizontal section of the tower column is octagonal, including a fifth corner side parallel to the first corner side, a sixth corner side parallel to the second corner side, a seventh corner side parallel to the third corner side, and an eighth corner side parallel to the fourth corner side.

[0010] Optionally, the inner wall of the tower column also includes a first longitudinal straight edge, a second longitudinal straight edge, a first transverse straight edge and a second transverse straight edge, the first longitudinal straight edge and the second longitudinal straight edge are arranged along the longitudinal bridge direction, the first transverse straight edge and the second transverse straight edge are arranged along the transverse bridge direction, the first longitudinal straight edge connects the fifth corner edge and the sixth corner edge, the second longitudinal straight edge connects the seventh corner edge and the eighth corner edge, the first transverse straight edge connects the fifth corner edge and the eighth corner edge, and the second transverse straight edge connects the sixth corner edge and the seventh corner edge.

[0011] Optionally, the tower wall stirrups include a first stirrup segment parallel to the fifth corner side, a second stirrup segment parallel to the sixth corner side, a third stirrup segment parallel to the seventh corner side, a fourth stirrup segment parallel to the eighth corner side, a fifth stirrup segment parallel to the first longitudinal straight side, a sixth stirrup segment parallel to the second longitudinal straight side, a seventh stirrup segment parallel to the first transverse straight side, and an eighth stirrup segment parallel to the second transverse straight side. The first stirrup segment, the fifth stirrup segment, the second stirrup segment, the eighth stirrup segment, the third stirrup segment, the sixth stirrup segment, the fourth stirrup segment and the seventh stirrup segment are connected end to end in a circle.

[0012] Optionally, the outer wall of the tower column is concave inward on both sides along the longitudinal bridge direction.

[0013] Optionally, it further includes a plurality of inclined cable anchoring tooth blocks, wherein the inclined cable anchoring tooth blocks are arranged on the inner wall of the tower column, and the first inclined cable, the second inclined cable, the third inclined cable and the fourth inclined cable are respectively provided with inclined cable anchoring tooth blocks, and the ends of the first inclined cable, the second inclined cable, the third inclined cable and the fourth inclined cable are passed through the inclined cable anchoring tooth blocks.

[0014] Optionally, it further includes a base, and the tower column is arranged on the base.

[0015] Optionally, a tower top lightning protection assembly is also included.

[0016] The utility model provides a spatial double-cable-plane cable-stayed bridge with the following beneficial effects:

[0017] Since the first and second inclined-stayed cable groups are symmetrically arranged about the tower column, a first angle greater than 90° and less than 180° is formed between the first and second inclined-stayed cable groups, the third inclined-stayed cable group and the first inclined-stayed cable group are symmetrically arranged about the tower column, and a second angle greater than 0° and less than 90° is formed between the third and first inclined-stayed cable groups, the fourth inclined-stayed cable group and the third inclined-stayed cable group are symmetrically arranged about the tower column, and the fourth inclined-stayed cable group and the second inclined-stayed cable group are symmetrically arranged about the tower column. The tower columns are symmetrically arranged, thus forming a spatial double-cable-plane cable-stayed bridge; since the horizontal section of the tower column has a first corner side, a second corner side, a third corner side and a fourth corner side arranged around the center of the tower column, the first inclined cable is perpendicular to the first corner side, the second inclined cable is perpendicular to the second corner side, the third inclined cable is perpendicular to the third corner side, and the fourth inclined cable is perpendicular to the fourth corner side, thereby enhancing the lateral restraining effect of the inclined cable on the bridge tower, the first main beam and the second main beam, thereby improving the stability of the bridge tower, the first main beam and the second main beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a vertical layout diagram of a spatial double-cable-plane cable-stayed bridge along the transverse direction of the bridge in an embodiment of the present utility model;

[0019] Figure 2 This is a vertical layout diagram of a spatial double-cable-plane cable-stayed bridge along the longitudinal direction of the bridge in an embodiment of the present utility model;

[0020] Figure 3 It is a cross-sectional layout diagram of a spatial double-cable-plane cable-stayed bridge in an embodiment of the present utility model.

[0021] Description of reference numerals:

[0022] 100-tower column; 110-concrete body; 121-first stirrup segment; 122-second stirrup segment; 123-third stirrup segment; 124-fourth stirrup segment; 125-fifth stirrup segment; 126-sixth stirrup segment; 127-seventh stirrup segment; 128-eighth stirrup segment;

[0023] 131-first corner edge; 132-second corner edge; 133-third corner edge; 134-fourth corner edge; 135-fifth corner edge; 136-sixth corner edge; 137-seventh corner edge; 138-eighth corner edge; 139-first vertical straight edge; 140-second vertical straight edge; 141-first horizontal straight edge; 142-second horizontal straight edge;

[0024] 210-first inclined cable; 220-second inclined cable; 230-third inclined cable; 240-fourth inclined cable;

[0025] 300-stay cable anchoring tooth block;

[0026] 400-bearing platform;

[0027] 500-Tower top lightning protection assembly. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0033] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0034] refer to Figure 1 、 Figure 2 and Figure 3 , Figure 1 This is a vertical layout diagram of a spatial double-cable-plane cable-stayed bridge along the transverse direction of the bridge in an embodiment of the present utility model. Figure 2 This is a vertical layout diagram of a spatial double-cable-plane cable-stayed bridge along the longitudinal direction of the bridge in an embodiment of the present utility model. Figure 3 : is a cross-sectional layout diagram of a spatial double-cable-plane cable-stayed bridge in an embodiment of the present utility model. This embodiment provides a spatial double-cable-plane cable-stayed bridge, including:

[0035] Tower 100;

[0036] A first main beam is arranged on one side of the tower column 100 and arranged along the longitudinal bridge direction;

[0037] A second main beam is arranged on the other side of the tower column 100 and arranged along the longitudinal bridge direction;

[0038] A first stay cable group includes a plurality of first stay cables 210 , wherein one end of the first stay cable 210 is connected to the first main beam, and the other end is connected to the tower column 100 ;

[0039] a second stay cable group, comprising a plurality of second stay cables 220, one end of each of the second stay cables 220 being connected to the first main beam and the other end being connected to the tower column 100, the first stay cable group and the second stay cable group being symmetrically arranged about the tower column 100, and a first angle greater than 90° and less than 180° being formed between the first stay cable group and the second stay cable group;

[0040] a third stay cable group, comprising a plurality of third stay cables 230, one end of each of the third stay cables 230 being connected to the second main beam and the other end being connected to the tower column 100, the third stay cable group and the first stay cable group being symmetrically arranged about the tower column 100, and a second angle greater than 0° and less than 90° being formed between the third stay cable group and the first stay cable group;

[0041] a fourth stay cable group, comprising a plurality of fourth stay cables 240, one end of each of the fourth stay cables 240 being connected to the second main beam and the other end being connected to the tower column 100, wherein the fourth stay cable group and the third stay cable group are symmetrically arranged with respect to the tower column 100, and the fourth stay cable group and the second stay cable group are symmetrically arranged with respect to the tower column 100;

[0042] In which, the horizontal section of the tower column 100 has a first corner side 131, a second corner side 132, a third corner side 133 and a fourth corner side 134 arranged around the center of the tower column 100, the first inclined cable 210 is perpendicular to the first corner side 131, the second inclined cable 220 is perpendicular to the second corner side 132, the third inclined cable 230 is perpendicular to the third corner side 133, and the fourth inclined cable 240 is perpendicular to the fourth corner side 134.

[0043] Since the first and second stay cable groups are symmetrically arranged with respect to the tower column 100, a first angle greater than 90° and less than 180° is formed between the first and second stay cable groups, the third stay cable group and the first stay cable group are symmetrically arranged with respect to the tower column 100, and a second angle greater than 0° and less than 90° is formed between the third stay cable group and the first stay cable group, the fourth stay cable group and the third stay cable group are symmetrically arranged with respect to the tower column 100, and the fourth stay cable group and the second stay cable group are symmetrically arranged with respect to the tower column 100, thus, a space can be formed. A double-cable-plane cable-stayed bridge; since the horizontal section of the tower column 100 has a first corner side 131, a second corner side 132, a third corner side 133 and a fourth corner side 134 arranged around the center of the tower column 100, the first inclined cable 210 is perpendicular to the first corner side 131, the second inclined cable 220 is perpendicular to the second corner side 132, the third inclined cable 230 is perpendicular to the third corner side 133, and the fourth inclined cable 240 is perpendicular to the fourth corner side 134, the lateral restraint effect of the inclined cable on the bridge tower, the first main beam and the second main beam can be enhanced, thereby improving the stability of the bridge tower, the first main beam and the second main beam.

[0044] The tower column 100 is a single-box single-chamber structure.

[0045] The tower column 100 includes tower wall stirrups disposed within the concrete body 110 .

[0046] Preferably, the inner wall of the horizontal section of the tower column 100 is octagonal, including a fifth corner side 135 parallel to the first corner side 131, a sixth corner side 136 parallel to the second corner side 132, a seventh corner side 137 parallel to the third corner side 133, and an eighth corner side 138 parallel to the fourth corner side 134. This can enhance the lateral restraint effect of the inclined cable on the bridge tower, the first main beam and the second main beam, thereby improving the stability of the bridge tower, the first main beam and the second main beam.

[0047] Preferably, the inner wall of the tower column 100 also includes a first longitudinal straight edge 139, a second longitudinal straight edge 140, a first transverse straight edge 141 and a second transverse straight edge 142, the first longitudinal straight edge 139 and the second longitudinal straight edge 140 are arranged along the longitudinal bridge direction, the first transverse straight edge 141 and the second transverse straight edge 142 are arranged along the transverse bridge direction, the first longitudinal straight edge 139 connects the fifth corner edge 135 and the sixth corner edge 136, the second longitudinal straight edge 140 connects the seventh corner edge 137 and the eighth corner edge 138, the first transverse straight edge 141 connects the fifth corner edge 135 and the eighth corner edge 138, and the second transverse straight edge 142 connects the sixth corner edge 136 and the seventh corner edge 137.

[0048] Preferably, the tower wall stirrups include a first stirrup segment 121 parallel to the fifth corner side 135, a second stirrup segment 122 parallel to the sixth corner side 136, a third stirrup segment 123 parallel to the seventh corner side 137, a fourth stirrup segment 124 parallel to the eighth corner side 138, a fifth stirrup segment 125 parallel to the first longitudinal straight side 139, a sixth stirrup segment 126 parallel to the second longitudinal straight side 140, a seventh stirrup segment 127 parallel to the first transverse straight side 141, and an eighth stirrup segment 128 parallel to the second transverse straight side 142. The first stirrup segment 121, the fifth stirrup segment 125, the second stirrup segment 122, the eighth stirrup segment 128, the third stirrup segment 123, the sixth stirrup segment 126, the fourth stirrup segment 124 and the seventh stirrup segment 127 are connected end to end in a circle. In this way, the direction of the resultant force of the fifth stirrup segment 125 and the seventh stirrup segment 127 is the same as the direction of the first oblique cable 210, the direction of the resultant force of the fifth stirrup segment 125 and the eighth stirrup segment 128 is the same as the direction of the second oblique cable 220, the direction of the resultant force of the sixth stirrup segment 126 and the eighth stirrup segment 128 is the same as the direction of the third oblique cable 230, and the direction of the resultant force of the sixth stirrup segment 126 and the seventh stirrup segment 127 is the same as the direction of the fourth oblique cable 240. In this way, the force transmission in the anchorage area of ​​the tower column 100 is clear and reasonable, and the utilization efficiency of the tower wall stirrups can be improved.

[0049] Preferably, the outer wall of the tower column 100 is concave inward along both sides of the longitudinal bridge direction, so as to reduce the weight of the tower column 100 while ensuring good strength of the tower column 100.

[0050] Preferably, the horizontal cross-section of the outer wall of the tower column 100 is butterfly-shaped.

[0051] Preferably, the tower column 100 is torch-shaped.

[0052] Preferably, the spatial double-cable-plane cable-stayed bridge further includes a plurality of cable anchoring tooth blocks 300, which are disposed on the inner wall of the tower column 100. Each of the first, second, third, and fourth stay cables 210, 220, 230, and 240 is provided with a corresponding cable anchoring tooth block 300, and the ends of the first, second, third, and fourth stay cables 210, 220, 230, and 240 are passed through the cable anchoring tooth blocks 300. This improves the stability of the connection between the cables and the tower column 100.

[0053] The spatial double-cable-plane cable-stayed bridge further includes a cap 400 , and the tower column 100 is disposed on the cap 400 .

[0054] The spatial double-cable-plane cable-stayed bridge further includes a tower top lightning protection assembly 500 .

[0055] The above description is only a description of the preferred embodiment of the present invention and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A spatial double-cable-plane cable-stayed bridge, comprising a tower column, characterized in that: Also includes: A first main beam is arranged on one side of the tower column and along the longitudinal direction of the bridge; A second main beam is arranged on the other side of the tower column and arranged along the longitudinal bridge direction; A first stay cable group includes a plurality of first stay cables, wherein one end of the first stay cable is connected to the first main beam and the other end is connected to the tower column; a second stay cable group, comprising a plurality of second stay cables, one end of each second stay cable being connected to the first main beam and the other end being connected to the tower column, the first stay cable group and the second stay cable group being symmetrically arranged about the tower column, and a first angle greater than 90° and less than 180° being formed between the first stay cable group and the second stay cable group; a third stay cable group, comprising a plurality of third stay cables, one end of each third stay cable being connected to the second main beam and the other end being connected to the tower column, the third stay cable group and the first stay cable group being symmetrically arranged about the tower column, and a second angle greater than 0° and less than 90° being formed between the third stay cable group and the first stay cable group; a fourth stay cable group, comprising a plurality of fourth stay cables, one end of each fourth stay cable being connected to the second main beam and the other end being connected to the tower column, wherein the fourth stay cable group and the third stay cable group are symmetrically arranged about the tower column, and the fourth stay cable group and the second stay cable group are symmetrically arranged about the tower column; The horizontal section of the tower column has a first corner side, a second corner side, a third corner side and a fourth corner side arranged around the center of the tower column, the first inclined cable is perpendicular to the first corner side, the second inclined cable is perpendicular to the second corner side, the third inclined cable is perpendicular to the third corner side, and the fourth inclined cable is perpendicular to the fourth corner side.

2. The spatial double-cable-plane cable-stayed bridge according to claim 1, characterized in that: The tower column is a single-box single-chamber structure.

3. The spatial double-cable-plane cable-stayed bridge according to claim 2, characterized in that: The tower column includes a concrete body and tower wall stirrups arranged in the concrete body.

4. The spatial double-cable-plane cable-stayed bridge according to claim 3, characterized in that: The inner wall of the tower column on the horizontal section is octagonal, including a fifth corner parallel to the first corner, a sixth corner parallel to the second corner, a seventh corner parallel to the third corner, and an eighth corner parallel to the fourth corner.

5. The spatial double-cable-plane cable-stayed bridge according to claim 4, characterized in that: The inner wall of the tower column also includes a first longitudinal straight edge, a second longitudinal straight edge, a first transverse straight edge and a second transverse straight edge. The first longitudinal straight edge and the second longitudinal straight edge are arranged along the longitudinal bridge direction, and the first transverse straight edge and the second transverse straight edge are arranged along the transverse bridge direction. The first longitudinal straight edge connects the fifth corner edge and the sixth corner edge, the second longitudinal straight edge connects the seventh corner edge and the eighth corner edge, the first transverse straight edge connects the fifth corner edge and the eighth corner edge, and the second transverse straight edge connects the sixth corner edge and the seventh corner edge.

6. The spatial double-cable-plane cable-stayed bridge according to claim 5, characterized in that: The tower wall stirrups include a first stirrup segment parallel to the fifth corner side, a second stirrup segment parallel to the sixth corner side, a third stirrup segment parallel to the seventh corner side, a fourth stirrup segment parallel to the eighth corner side, a fifth stirrup segment parallel to the first longitudinal straight side, a sixth stirrup segment parallel to the second longitudinal straight side, a seventh stirrup segment parallel to the first transverse straight side, and an eighth stirrup segment parallel to the second transverse straight side. The first stirrup segment, the fifth stirrup segment, the second stirrup segment, the eighth stirrup segment, the third stirrup segment, the sixth stirrup segment, the fourth stirrup segment and the seventh stirrup segment are connected end to end in a circle.

7. The spatial double-cable-plane cable-stayed bridge according to claim 2, characterized in that: The outer wall of the tower column is concave inwards along both sides of the longitudinal bridge direction.

8. The spatial double-cable-plane cable-stayed bridge according to claim 1, characterized in that: It also includes a plurality of inclined cable anchoring tooth blocks, which are arranged on the inner wall of the tower column. The first inclined cable, the second inclined cable, the third inclined cable and the fourth inclined cable are respectively provided with inclined cable anchoring tooth blocks, and the ends of the first inclined cable, the second inclined cable, the third inclined cable and the fourth inclined cable are passed through the inclined cable anchoring tooth blocks.

9. The spatial double-cable-plane cable-stayed bridge according to claim 1, characterized in that: It also includes a base, and the tower column is arranged on the base.

10. The spatial double-cable-plane cable-stayed bridge according to claim 1, characterized in that: Also included is the tower top lightning protection assembly.

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