Central tower column double-cable-plane cable-stayed bridge

Abstract

The utility model provides a cable-stayed bridge with a central tower column and double cable planes. The cable-stayed bridge comprises a lower tower pier, the central tower column is arranged on the lower tower pier and is provided with a cross beam hole in the transverse bridge direction; the pier beam vertical support is arranged on the lower tower pier; the middle cross beam is arranged in the transverse bridge direction and penetrates through the cross beam hole to be arranged on the pier beam vertical support; the two side longitudinal beams are arranged in the bridge direction, the central tower column is located between the two side longitudinal beams, one end of the middle cross beam is connected with one side longitudinal beam, and the other end of the middle cross beam is connected with the other side longitudinal beam; the at least two side span side cross beams are arranged in the transverse bridge direction, the central tower column is located between the two side span side cross beams, one end of each side span side cross beam is connected with one side longitudinal beam, and the other end of each side span side cross beam is connected with the other side longitudinal beam; and the at least two middle longitudinal beams are arranged in the bridge direction, and the central tower column is located between the two middle longitudinal beams, located on the inner sides of the two side longitudinal beams and connected with the middle cross beams and the side span side cross beams. The problem that a bridge is difficult to design can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge design and construction, in particular to a central tower column double cable plane cable-stayed bridge. Background Art

[0002] The cable-stayed bridge adopts the form of central tower column, which has a simple and upright appearance, distinct personality, good landscape effect, and can flexibly adapt to various pier shapes and pier height changes. In particular, when the short pier and wide cable-stayed bridge adopts rotation construction, in order to adapt to the layout conditions of the rotation system, the lower tower pier needs to be ended at a relatively small size below the bridge deck. At this time, due to the limited height of the lower tower pier, the other bridge tower structures such as H-type and A-type do not have the conditions of being narrowed by the bridge width, while the central tower column can well adapt to the above-mentioned pier shape and pier height changes.

[0003] The double cable plane arrangement of the cable-stayed bridge can effectively enhance the lateral constraint of the cable-stayed bridge on the main beam, thereby improving the torsional stiffness of the main beam during rotation, cantilever construction and operation.

[0004] The double-sided main beam cross-section has simple and clear force and a high degree of standardized construction. It is one of the most widely used main beam cross-section forms for double-cable-plane cable-stayed bridges.

[0005] In summary, the central tower double-cable-plane cable-stayed bridge has clear force and good landscape effect, especially under certain specific conditions, it has its unique competitive advantages. However, in actual applications, there are still problems such as the difficulty in designing the tower-beam interpenetration structure, which limits the use of this bridge type. The central tower double-cable-plane cable-stayed bridge adopts a double-sided main beam section, and there must be a tower-beam interpenetration structure at the intersection of the main tower and the main beam. The middle crossbeam of the main beam at the central tower needs to pass through the central tower. When the bridge width is large, the required width of the middle crossbeam is relatively large, and the size of the opening of the central tower increases accordingly, which weakens the cross section of the central tower too much. When the longitudinal size of the bottom of the central tower is limited, it is difficult to design.

[0006] Therefore, it is necessary to improve the existing central tower column double cable plane cable-stayed bridge to avoid the problem that the opening size of the central tower column is too large when the bridge width is large, which leads to difficulties in bridge design. Utility Model Content

[0007] The utility model aims to provide a central tower column double cable plane cable-stayed bridge to solve the problem that the existing central tower column double cable plane cable-stayed bridge is difficult to design because the opening size of the central tower column is too large when the bridge width is large.

[0008] In order to solve the above technical problems, the utility model provides a central tower column double cable plane cable-stayed bridge, including a lower tower pier, and also includes: a central tower column, which is arranged on the lower tower pier and has a cross beam hole opened along the transverse direction of the bridge; at least two pier beam vertical supports are arranged on the lower tower pier; a middle cross beam is arranged along the transverse direction of the bridge and passes through the cross beam hole and is arranged on the pier beam vertical supports; two side longitudinal beams are arranged along the longitudinal direction of the bridge, and the central tower column is located between the two side longitudinal beams, and one end of the middle cross beam is connected to one of the side longitudinal beams. longitudinal beam, the other end of the middle cross beam is connected to another side longitudinal beam; at least two side span side cross beams are arranged along the transverse direction of the bridge, and the central tower is located between the two side span side cross beams, and one end of the side span side cross beam is connected to one side longitudinal beam, and the other end of the side span side cross beam is connected to another side longitudinal beam; and at least two middle longitudinal beams are arranged along the longitudinal direction of the bridge, the central tower is located between the two middle longitudinal beams, and is located on the inner side of the two side longitudinal beams, and connects the middle cross beam and the side span side cross beams.

[0009] Optionally, the pier beam vertical support is arranged at the intersection of the middle longitudinal beam and the middle cross beam.

[0010] Optionally, the number of the side span side beams is two, and the number of the middle longitudinal beams is two.

[0011] Optionally, the number of the pier beam vertical supports is two.

[0012] Optionally, it also includes a tower beam transverse wind-resistant support, which is arranged between the central tower column and the middle longitudinal beam closest to the central tower column.

[0013] Optionally, the number of the tower beam transverse wind-resistant supports is four.

[0014] Optionally, four tower beam transverse wind-resistant supports are symmetrically arranged on both sides of the middle beam.

[0015] Optionally, it also includes a cable-stayed cable, which connects the central tower column and the side longitudinal beam.

[0016] Optionally, the stayed cables are symmetrically arranged about the central tower.

[0017] Optionally, it also includes a bridge deck, which is arranged on the middle cross beam, the side span side beams, the side longitudinal beams and the middle longitudinal beam.

[0018] The utility model provides a central tower column double cable plane cable-stayed bridge, which has the following beneficial effects:

[0019] Since the middle cross beam is arranged along the transverse direction of the bridge, and the middle cross beam passes through the cross beam hole and is arranged on the vertical support of the pier beam, the two side longitudinal beams are arranged along the longitudinal direction of the bridge, and the central tower column is located between the two side longitudinal beams, and one end of the middle cross beam is connected to one side longitudinal beam, and the other end of the middle cross beam is connected to another side longitudinal beam, at least two side span side cross beams are arranged along the transverse direction of the bridge, and one end of the side span side cross beam is connected to one side longitudinal beam, and the other end of the side span side cross beam is connected to another side longitudinal beam, at least two middle longitudinal beams are arranged along the longitudinal direction of the bridge, the central tower column is located between the two middle longitudinal beams, and multiple middle longitudinal beams are located on the inner sides of the two side longitudinal beams, and the middle longitudinal beam connects the middle part of the middle cross beam and the middle part of the side span side cross beam, so that the middle cross beam, the side span side cross beam, the side longitudinal beam and the middle longitudinal beam form a lattice structure as a force transmission structure between the piers, towers and beams where the tower beams intersect, and the outer bilateral side longitudinal beams directly or indirectly The longitudinal load is directly borne by the middle cross beam and the side span side cross beams, and then transmitted to the support in the transverse direction near the central tower column through the middle cross beam and the side span side cross beams, and then transmitted to the lower tower pier. The middle cross beam and the side span side cross beams are connected longitudinally through the outer double-sided longitudinal beams and the middle longitudinal beam to form an overall coordinated force-bearing structure. The above structure greatly improves the bearing capacity of the middle cross beam and the side span side cross beams; and the middle cross beam and the side span side cross beams are used to jointly transmit the transverse load near the central tower column, which can reduce the width of a single middle cross beam and the side span side cross beam, and only the middle cross beam passes through the central tower column, which can greatly reduce the size of the opening required for the central tower column due to the passage of the cross beam, facilitates the bridge design, and further reduces the weakening of the cross section of the central tower column and the increase in the longitudinal size due to the penetration of the tower beam; and the middle cross beam, the side span side cross beams and the middle longitudinal beam surround the central tower column to form a good supporting position, which provides convenient conditions for the installation of transverse wind-resistant bearings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional view of a central tower column double cable plane cable-stayed bridge along the bridge direction in an embodiment of the utility model;

[0021] Figure 2 It is a cross-sectional view of a central tower column double cable plane cable-stayed bridge in the embodiment of the utility model in the transverse direction of the bridge;

[0022] Figure 3 It is a plan cross-sectional view of a central tower column double cable plane cable-stayed bridge in an embodiment of the utility model.

[0023] Description of reference numerals:

[0024] 100-lower tower pier;

[0025] 200-central tower column; 210-beam hole;

[0026] 300- pier-beam vertical support;

[0027] 400-mid beam;

[0028] 500-side stringer;

[0029] 600-side span beam;

[0030] 700-middle longitudinal beam;

[0031] 800-tower beam transverse wind bearing;

[0032] 900-bridge deck. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] 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 present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] 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, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does 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 utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0037] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0038] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a cross-sectional view of a central tower column double cable plane cable-stayed bridge along the bridge direction in an embodiment of the utility model. Figure 2 This is a cross-sectional view of a central tower double-cable-plane cable-stayed bridge in the embodiment of the utility model in the transverse direction of the bridge. Figure 3 : is a plan cross-sectional view of a central tower column double cable plane cable-stayed bridge in an embodiment of the utility model. This embodiment provides a central tower column double cable plane cable-stayed bridge, including:

[0040] Lower tower pier 100;

[0041] The central tower column 200 is arranged on the lower tower pier 100 and has a cross beam hole 210 opened along the transverse direction of the bridge;

[0042] At least two pier-beam vertical supports 300 are provided on the lower tower pier 100;

[0043] The middle cross beam 400 is arranged along the transverse direction of the bridge and passes through the cross beam hole 210 and is arranged on the pier beam vertical support 300;

[0044] Two side longitudinal beams 500 are arranged along the bridge direction, and the central tower column 200 is located between the two side longitudinal beams 500, and one end of the middle cross beam 400 is connected to one side longitudinal beam 500, and the other end of the middle cross beam 400 is connected to another side longitudinal beam 500;

[0045] At least two side span cross beams 600 are arranged along the transverse direction of the bridge, and the central tower column 200 is located between the two side span cross beams 600, and one end of the side span cross beam 600 is connected to one side longitudinal beam 500, and the other end of the side span cross beam 600 is connected to another side longitudinal beam 500; and,

[0046] At least two middle longitudinal beams 700 are arranged along the longitudinal direction of the bridge. The central tower column 200 is located between the two middle longitudinal beams 700 and on the inner side of the two side longitudinal beams 500, and connects the middle part of the middle cross beam 400 and the middle part of the side span cross beam 600.

[0047] Since the middle cross beam 400 is arranged along the transverse direction of the bridge, and the middle cross beam 400 passes through the cross beam hole 210 and is arranged on the pier beam vertical support 300, the two side longitudinal beams 500 are arranged along the longitudinal direction of the bridge, and the central tower column 200 is located between the two side longitudinal beams 500, and one end of the middle cross beam 400 is connected to one side longitudinal beam 500, and the other end of the middle cross beam 400 is connected to another side longitudinal beam 500, at least two side span side beams 600 are arranged along the transverse direction of the bridge, and one end of the side span side beam 600 is connected to one side longitudinal beam 500, and the side span side beam 600 The other end of the side longitudinal beam 500 is connected to another side longitudinal beam 500, at least two middle longitudinal beams 700 are arranged along the bridge direction, the central tower column 200 is located between the two middle longitudinal beams 700, and multiple middle longitudinal beams 700 are located on the inner sides of the two side longitudinal beams 500, and the middle longitudinal beam 700 connects the middle part of the middle cross beam 400 and the middle part of the side span side beam 600. In this way, the middle cross beam 400, the side span side beam 600, the side longitudinal beam 500 and the middle longitudinal beam 700 form a lattice structure as a force transmission structure between the piers, towers and beams where the towers and beams intersect each other, and the outer double-sided side beams The longitudinal beam 500 directly or indirectly bears the longitudinal load, and transmits it to the support in the transverse direction through the middle cross beam 400 and the side cross beam 600 near the central tower column 200, and then transmits it to the lower tower pier 100. The middle cross beam 400 and the side cross beam 600 are connected in the longitudinal direction through the outer double-sided longitudinal beams 500 and the middle longitudinal beam 700 to form an overall coordinated force-bearing structure. The above structure greatly improves the bearing capacity of the middle cross beam 400 and the side cross beam 600; and the middle cross beam 400 and the side cross beam 600 are used to jointly transmit the transverse load near the central tower column 200. The lateral load can be reduced by reducing the width of the single middle cross beam 400 and the side span side beam 600, and only the middle cross beam 400 passes through the central tower column 200, which can greatly reduce the size of the opening of the central tower column 200 due to the passage of the cross beam, facilitate bridge design, and further reduce the weakening of the cross section of the central tower column 200 and the increase of the longitudinal size due to the penetration of the tower and beam; and the middle cross beam 400, the side span side beam 600 and the middle longitudinal beam 700 surround the central tower column 200 to form a good supporting position, which provides convenient conditions for the installation of transverse wind-resistant bearings.

[0048] Preferably, the pier beam vertical support 300 is arranged at the intersection of the middle longitudinal beam 700 and the middle cross beam 400 .

[0049] Preferably, the number of the side span cross beams 600 is two, and the number of the middle longitudinal beams 700 is two.

[0050] Preferably, the number of the pier-beam vertical supports 300 is two.

[0051] The central tower column double-cable plane cable-stayed bridge further includes a tower beam transverse wind-resistant support 800 , and the tower beam transverse wind-resistant support 800 is arranged between the central tower column 200 and the middle longitudinal beam 700 closest to the central tower column 200 .

[0052] Preferably, the number of the tower beam transverse wind-resistant supports 800 is four.

[0053] Preferably, the four tower beam transverse wind-resistant supports 800 are symmetrically arranged on both sides of the middle cross beam 400 .

[0054] The central tower column double-cable plane cable-stayed bridge further includes a cable-stayed cable, which connects the central tower column 200 and the side longitudinal beam 500.

[0055] Preferably, the stay cables are symmetrically arranged about the central tower 200 .

[0056] The central tower column double cable plane cable-stayed bridge further includes a bridge deck 900 , and the bridge deck 900 is arranged on the middle cross beam 400 , the side span side beams 600 , the side longitudinal beams 500 and the middle longitudinal beam 700 .

[0057] Preferably, the bridge deck 900 is a reinforced concrete structure.

[0058] The construction process of the central tower double cable plane cable-stayed bridge is as follows:

[0059] In the first step, after the construction of the bridge foundation is completed, the lower tower pier 100 is constructed, and at the same time, the central tower column 200 is cast to the top surface of the side longitudinal beam 500, and the length of the vertical force-bearing steel bars extended to meet the anchor length requirements.

[0060] The second step is to install the pier beam vertical support 300. The support is not subjected to stress. The side longitudinal beam 500, the middle longitudinal beam 700, the side span side beam 600, the middle beam 400 and the concrete bridge deck 900 are cast on the support, and temporary consolidation is carried out at the same time.

[0061] The third step is to install the tower beam transverse wind-resistant support 800 and continue to construct the central tower column 200 upwards.

[0062] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A central tower column double cable plane cable-stayed bridge, comprising a lower tower pier, characterized in that: Also includes: The central tower column is arranged on the lower tower pier and has a cross beam hole opened along the transverse direction of the bridge; At least two pier-beam vertical supports are provided on the lower tower pier; A middle cross beam is arranged along the transverse direction of the bridge and passes through the cross beam hole and is arranged on the vertical support of the pier beam; Two side longitudinal beams are arranged along the bridge direction, and the central tower column is located between the two side longitudinal beams, and one end of the middle cross beam is connected to one of the side longitudinal beams, and the other end of the middle cross beam is connected to the other side longitudinal beam; At least two side span cross beams are arranged along the transverse direction of the bridge, and the central tower is located between the two side span cross beams, and one end of the side span cross beam is connected to one side longitudinal beam, and the other end of the side span cross beam is connected to another side longitudinal beam; as well as, At least two middle longitudinal beams are arranged along the direction of the bridge. The central tower column is located between the two middle longitudinal beams and on the inner sides of the two side longitudinal beams, and connects the middle cross beam and the side span cross beams.

2. The central tower double cable plane cable-stayed bridge according to claim 1, characterized in that: The pier beam vertical support is arranged at the intersection of the middle longitudinal beam and the middle cross beam.

3. The central tower double cable plane cable-stayed bridge according to claim 1, characterized in that: The number of the side span side beams is two, and the number of the middle longitudinal beams is two.

4. The central tower double cable plane cable-stayed bridge according to claim 3, characterized in that: The number of the pier-beam vertical supports is two.

5. The central tower double cable plane cable-stayed bridge according to claim 1, characterized in that: It also includes a tower beam transverse wind-resistant support, which is arranged between the central tower column and the middle longitudinal beam closest to the central tower column.

6. The central tower double cable plane cable-stayed bridge according to claim 5, characterized in that: The number of the tower beam transverse wind-resistant supports is four.

7. The central tower double cable plane cable-stayed bridge according to claim 6, characterized in that: The four tower beam transverse wind-resistant supports are symmetrically arranged on both sides of the middle beam.

8. The central tower double cable plane cable-stayed bridge according to claim 1, characterized in that: Also included are stay cables, which connect the central tower column and the side longitudinal beams.

9. The central tower double cable plane cable-stayed bridge according to claim 8, characterized in that: The stay cables are symmetrically arranged about the central tower.

10. The central tower double cable plane cable-stayed bridge according to claim 1, characterized in that: It also includes a bridge deck, which is arranged on the middle cross beam, the side span side beams, the side longitudinal beams and the middle longitudinal beam.

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