Hybrid bridge structure and hybrid cable-stayed bridge

Abstract

The present invention is applicable to the field of bridge engineering, and provides a hybrid bridge structure and a hybrid cable-stayed bridge. The above-mentioned hybrid bridge structure includes: a steel box girder, including a steel girder top plate and a steel girder body arranged at the bottom of the steel girder top plate, at least two of the steel girder bodies are arranged at intervals, and a groove opening downward is formed between two adjacent steel girder bodies and the steel girder top plate; a concrete beam connected to the steel box girder, and the steel box girder and the concrete beam form a bridge deck for passage; the groove is provided with a connecting box body for the concrete beam to extend into and connect at a position close to the concrete beam, and the connecting box body is open on the side facing the concrete beam. In the present invention, the steel box girder and the concrete beam at the joint section are both full box sections, which can avoid drastic changes in stiffness, achieve smooth force transmission between the two, and improve the safety of the overall structure of the entire bridge.

Description

Technical Field

[0001] The invention belongs to the field of bridge engineering, and in particular relates to a hybrid bridge structure and a hybrid cable-stayed bridge. Background Art

[0002] Hybrid-beam cable-stayed bridges use steel and concrete to form the main beam, giving full play to the advantages of steel beams and concrete beams, improving the mechanical performance of the structural system and optimizing the economic efficiency of the project. At present, hybrid bridges have been widely used in long-span cable-stayed bridges.

[0003] In the related technology, the steel box beam is usually a separated double main beam with an open bottom plate section, while the concrete beam adopts a whole box section with a fully enclosed bottom plate structure. The joint section of the steel beam and the concrete beam is the stiffness mutation point of the main beam. Due to the difference in the cross-sectional structure of the joint section of the steel beam and the concrete beam, there is a large stiffness mutation and uneven force transmission at the joint section. Summary of the invention

[0004] In view of this, an embodiment of the present invention provides a hybrid bridge structure and a hybrid cable-stayed bridge to solve the problems of sudden stiffness change and uneven force transmission at the joint section.

[0005] To solve the above problems, the technical solution of the embodiment of the present invention is implemented as follows:

[0006] A hybrid bridge structure comprises: a steel box girder, comprising a steel girder top plate and a steel girder body arranged at the bottom of the steel girder top plate, wherein at least two steel girder bodies are arranged at intervals, and a groove opening downward is formed between two adjacent steel girder bodies and the steel girder top plate; a concrete beam connected to the steel box girder, wherein the steel box girder and the concrete beam form a bridge deck for passage; wherein a connection box body for the concrete beam to extend into and connect is arranged at a position of the groove close to the concrete beam, and the connection box body is open on the side facing the concrete beam.

[0007] Preferably, the connecting box includes: a connecting bottom plate connected between two adjacent steel beam bodies, the connecting bottom plate being used to seal the downward opening of the groove; a connecting web plate being arranged in the groove and respectively connected to the two steel beam bodies, the steel beam top plate and the connecting bottom plate, the connecting web plate being used to seal the opening of the connecting box away from the side of the concrete beam.

[0008] Preferably, a notch is provided on the connecting bottom plate, the notch is open in a direction away from the concrete beam, and one side of the connecting web is connected to the connecting bottom plate along the contour of the notch.

[0009] Preferably, the shape of the notch is symmetrical along the center line of the bridge.

[0010] Preferably, the width of the notch is gradually expanded in a direction away from the concrete beam.

[0011] Preferably, the angle between the edge line of the notch and the center line of the bridge is in the range of 40° to 50°.

[0012] Preferably, the steel beam body includes: a steel beam web, which is arranged at intervals at the bottom of the steel beam top plate, and one end of the two steel beam webs is fixedly connected to the steel beam top plate; a steel beam bottom plate, which is arranged between the two steel beam webs and is respectively connected to the other ends of the two steel beam webs; two compartment assemblies, which are respectively fixedly connected to the steel beam top plate and the steel beam top plate; wherein steel cells for the concrete beam to be inserted and connected are respectively formed between the compartment assembly and the steel beam top plate and between the compartment assembly and the steel beam top plate.

[0013] Preferably, the hybrid bridge structure also includes: a first stiffening rib, which is obliquely arranged on the steel box girder, one end of the first stiffening rib is connected to the steel beam top plate, and the other end is connected to the compartment assembly connected to the steel beam top plate; a second stiffening rib, which is obliquely arranged on the steel box girder, one end of the second stiffening rib is connected to the steel beam bottom plate, and the other end is connected to the compartment assembly connected to the steel beam bottom plate.

[0014] Preferably, the hybrid bridge structure further comprises: a transverse diaphragm, which is arranged in the groove and is spaced apart in a plurality along the length direction of the groove.

[0015] A cable-stayed bridge is also provided in an embodiment of the present invention, comprising the above-mentioned hybrid bridge structure.

[0016] A hybrid bridge structure provided by an embodiment of the present invention includes a steel box girder and a concrete beam, wherein the steel box girder includes a steel beam top plate and a steel beam body arranged at intervals at the bottom of the steel beam top plate, and a groove opening downward is formed between two adjacent steel beam bodies and the steel beam top plate. A connecting box body for the concrete beam to be inserted and connected is provided at a position where the groove is close to the concrete beam, and the side of the connecting box body facing the concrete beam is open. In this way, the connecting box body closes the groove opening at the connection position, so that the cross-section of the steel box girder used for combining with the concrete beam is a whole box cross-section, which can be consistent with the cross-sectional shape of the concrete beam at the combination. The steel box girder and the concrete beam at the combination section are both whole box cross-sections, which can avoid drastic changes in stiffness, achieve smooth transmission of force between the two, and improve the stability of the overall structure of the bridge. The social and economic benefits are significant, the innovation is high, and it has important engineering value. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a cross-sectional schematic diagram of a combined section of a steel box beam and a concrete beam provided by an embodiment of the present invention;

[0019] Figure 2 is a schematic cross-sectional view of a combined section in a hybrid bridge structure provided by an embodiment of the present invention in a first direction;

[0020] Figure 3 is a schematic plan view of an expanded joint section in a hybrid bridge structure provided by an embodiment of the present invention;

[0021] Figure 4 It is a schematic cross-sectional view of a combined section in a hybrid bridge structure provided by an embodiment of the present invention in a second direction.

[0022] Description of reference numerals:

[0023] 11. Steel box girder; 111. Steel beam top plate; 112. Steel beam body; 1121. Steel beam web; 1122. Steel beam bottom plate; 1124. Steel cell; 1125. Connecting nails; 1126. Structural steel plate; 1127. Pressure plate; 1128. Compartment plate; 113. Groove; 12. Concrete beam; 13. Connecting box body; 131. Connecting bottom plate; 132. Connecting web; 133. Notch; 14. First stiffening rib; 15. Second stiffening rib; 16. Diaphragm. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] The various specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction, for example, different embodiments and technical solutions can be formed by combining different specific technical features. In order to avoid unnecessary repetition, various possible combinations of the specific technical features in the present invention will not be described separately.

[0026] like Figure 1 and Figure 2As shown, a hybrid bridge structure provided by an embodiment of the present invention is mainly used in a cable-stayed bridge formed by combining a steel box girder 11 and a concrete beam 12, and is used to improve the reliability of the connection at the combined section of the steel box girder 11 and the concrete beam 12. The hybrid bridge structure includes a steel box girder 11 and a concrete beam 12. The steel box girder 11 is usually arranged in the middle part of the entire bridge as a main beam; and the concrete beam 12 is arranged at both ends of the steel box girder 11 as a side span beam. After the concrete beam 12 is connected to the steel box girder 11, a bridge deck for traffic can be formed. Specifically, the steel box girder 11 includes a steel beam top plate 111 and a steel beam body 112 arranged at the bottom of the steel beam top plate 111. The steel beam body 112 is usually a hollow structure made of steel material with high structural strength, so that the structural strength of the steel beam top plate 111 is enhanced by the steel beam body 112. In actual settings, the number of steel beam bodies 112 can be set according to the width of the rigid box body. Usually, at least two steel beam bodies 112 are arranged at intervals, so as to reduce the overall weight of the steel box beam 11 while meeting the structural strength requirements of the steel box beam 11. Moreover, since two adjacent steel beam bodies 112 are arranged at intervals, a groove 113 opening downward is formed between the two adjacent steel beam bodies 112 and the steel beam top plate 111. The opening of the groove 113 is downward, which means it is facing the direction opposite to the direction where the bridge deck is located. The length of the groove 113 is usually extended along the length direction of the steel box beam 11. Of course, the groove 113 can also be arranged in sections or staggered in the length direction while ensuring the structural strength.

[0027] Specifically, if Figure 1 and Figure 2As shown, the groove 113 provided at the bottom of the steel box girder 11 makes the cross-sectional shape of the steel box girder 11 a structure with an open bottom, which is different from the cross-sectional shape of the concrete beam 12, which is a structure with a fully closed bottom. In order to make the cross-sectional shape of the steel box girder 11 at the joint section the same as the cross-sectional shape of the concrete beam 12 at the joint section, so as to facilitate the connection between the steel box girder 11 and the concrete beam 12. In the embodiment of the present invention, a connection box 13 for the concrete beam 12 to be inserted and connected is provided in the groove 113 at the position close to the concrete beam 12, and the side of the connection box 13 facing the concrete beam 12 is open, so that the end of the concrete beam 12 for connection can be inserted into the connection box 13 through the opening. Specifically, the connection box 13 is provided in the groove 113, so that the downward opening of the groove 113 at the position can be sealed to form a closed structure, and the overall shape is a box structure with an opening on the side facing the concrete beam 12. In this way, at the position of the joint section, the cross section of the connection box body 13 obtained from the length direction perpendicular to the steel box girder 11 is a closed structure on all sides, so that the cross section of the steel box girder 11 at the joint with the concrete beam 12 is a whole box cross section, which can be consistent with the cross-sectional shape of the concrete beam 12 at the joint. In this way, since the steel box girder 11 and the concrete beam 12 at the joint section are both whole box cross sections, after the connection, force can be transmitted at the joint position, so that the force can be smoothly transmitted between the two, and the drastic change of stiffness caused by the shape difference of the joint is avoided, thereby ensuring the structural safety of the joint section. Moreover, this method of setting the same cross-sectional shape as the concrete beam 12 on the steel box girder 11 makes the structure simple, greatly simplifies the processing and welding of the reinforcement components, and has good economy.

[0028] like Figure 2 and Figure 3As shown, in a possible embodiment, the connection box 13 includes a connection bottom plate 131 and a connection web 132. The connection bottom plate 131 is connected between two adjacent steel beam bodies 112, specifically, the connection bottom plate 131 is connected to the bottom plates of two adjacent steel beam bodies 112 as a whole. Thus, the opening of the groove 113 facing downward can be sealed by the connection bottom plate 131. The connection web 132 is arranged in the groove 113, and is respectively connected to the two steel beam bodies 112, the steel beam top plate 111 and the connection bottom plate 131. That is, the connection web 132 is vertically arranged in the groove 113, so that the four sides of the connection web 132 are respectively connected to the two steel beam bodies 112, the steel beam top plate 111 and the connection bottom plate 131 as a whole, and the connection method can be achieved by welding, so that the opening of the connection box 13 away from the concrete beam 12 can be sealed by the connection web 132. In this way, the cross-sectional shape of the connecting box 13 formed by the connecting bottom plate 131, the connecting web 132 and the two adjacent steel beam bodies 112 is a closed box structure, which is consistent with the cross-sectional shape of the connected concrete beam 12. Thus, the drastic change of stiffness and the unsmooth force transmission are avoided, and the internal force of the steel box beam 11 can be transmitted evenly, ensuring the structural safety of the joint section. In the actual setting, at the position where the connecting box 13 is required to be set, the connecting bottom plate 131 can also be formed by widening the bottom plates of the two steel beam bodies 112 at the corresponding positions. The connecting web 132 can be set in the groove 113 in a manner that is basically perpendicular to the steel beam top plate 111.

[0029] like Figure 2 and Figure 3 As shown in FIG. 1 , in a possible embodiment, a notch 133 is provided on the connecting bottom plate 131, and the notch 133 is open in a direction away from the concrete beam 12, and one side of the connecting web 132 is connected to the connecting bottom plate 131 along the contour of the notch 133. Specifically, as Figure 2As shown, when viewed from the bottom of the steel box girder 11, the opening on the obtained connection bottom plate 131 is roughly in the shape of a "parabola", and the width of the notch 133 is gradually expanded in the direction away from the concrete beam 12. Moreover, it is preferred to set the shape of the notch 133 to be symmetrical along the center line of the bridge. In this way, by setting the connection bottom plate 131 to have the shape of the notch 133, the connection web 132 is inclined relative to the length direction of the groove 113 after being connected to the connection bottom plate 131 along the contour shape of the notch 133, that is, the connection web 132 is at a certain angle relative to the center line of the bridge. The inclined connection web 132 conforms to the law of stress transfer. When the concrete beam 12 contacts the connection web 132, the stress transfer between the steel box girder 11 and the concrete beam 12 can be reliably achieved. Of course, it can be understood that in other embodiments, on the premise that the formed connection box 13 meets the use requirements, the shape of the notch 133 can also be set to other shapes, which is not limited here.

[0030] In the embodiment of the present invention, the shape of the notch 133 can be maintained so that the angle between the edge line of the notch 133 and the center line of the bridge is in the range of 40° to 50°. Specifically, the angle between the edge line of the notch 133 and the center line of the bridge is preferably set to 45°.

[0031] like Figure 2 and Figure 3 As shown, in a possible implementation, the steel beam body 112 includes a steel beam web 1121, a steel beam bottom plate 1122 and two compartment assemblies. Each steel beam body 112 is provided with two steel beam webs 1121, and the two steel beam webs 1121 are spaced apart at the bottom of the steel beam top plate 111, and one end of the two steel beam webs 1121 is fixedly connected to the steel beam top plate 111. The steel beam bottom plate 1122 is arranged between the two steel beam webs 1121 and is respectively connected to the other ends of the two steel beam webs 1121. This arrangement makes the steel beam body 112 an internally hollow structure, which can ensure structural strength and reduce the overall weight. After the two compartment assemblies are respectively fixedly connected to the steel beam top plate 111 and the steel beam top plate 111, steel cells 1124 (refer to Figure 4). In this way, inserting one end of the concrete beam 12 into the steel cell 1124 can increase the contact area between the steel box beam 11 and the concrete beam 12, and improve the stability of the connection. In actual setting, the steel bar structure of the concrete beam 12 is extended into the steel cell 1124, and then the connection between the concrete beam 12 and the steel box beam 11 is achieved by pouring concrete into the steel cell 1124. This method of pouring concrete can improve the tightness of the connection.

[0032] like Figure 2 and Figure 3 As shown, in a possible implementation, the steel beam web 1121 and the steel beam bottom plate 1122 of the steel beam body 112 can be formed by welding different steel plates, or by bending the same steel plate. In the embodiment of the present invention, the steel box beam 11 is configured to include two spaced steel beam bodies 112, and the two steel beam bodies 112 are respectively arranged on both sides of the width direction of the steel box beam 11, and the groove 113 (refer to Figure 1 ) is located in the middle of the width direction of the steel box girder 11. At the same time, the steel beam web 1121 and the steel beam bottom plate 1122 of the steel beam body 112 are formed by welding different steel plates. In this way, the two steel beam webs 1121 on each steel beam body 112 are respectively located on both sides of the width direction of the steel beam body 112, that is, one steel beam web 1121 is located on the outside, and the other steel beam web 1121 is located on the inside, forming the side wall of the groove 113, so that the connecting web 132 is connected to the steel beam web 1121 located on the inside. The bottom of the steel beam arranged between the two steel beam webs 1121 can be straight, so that it can be designed according to requirements, such as Figure 2 As shown, a portion of the bottom of the steel beam is arranged to be inclined to improve the structural strength of the steel box beam 11.

[0033] like Figure 3 and Figure 4As shown, in the embodiment of the present invention, the compartment assembly includes a pressure plate 1127 and a compartment plate 1128. Specifically, the compartment assembly connected to the steel beam top plate 111 is arranged in the following manner: the pressure plate 1127 is arranged vertically, the compartment plate 1128 is arranged substantially parallel to the steel beam top plate 111, and one end of the pressure plate 1127 is connected to the steel beam top plate 111, and the other end of the pressure plate 1127 is conveniently connected to one end of the compartment plate 1128, and the other end of the compartment plate 1128 extends toward the direction where the concrete beam 12 is located by an appropriate length, so as to form a steel cell 1124 whose volume meets the use requirements. After the other end of the compartment plate 1128 is extended, it is welded to the steel bar structure in the concrete beam 12 as a whole, so as to enhance the overall structural strength. In addition, in order to improve the reliability of the connection between the concrete beam 12 and the steel box beam 11 in the steel cell 1124, a plurality of connecting nails are provided on at least one of the steel beam top plate 111, the pressure plate 1127 and the partition plate 1128 located in the steel cell 1124 area, so as to increase the contact area with the concrete beam 12.

[0034] Likewise, Figure 3 and Figure 4 As shown, the compartment assembly connected to the steel beam bottom plate 1122 is arranged in the following manner: the pressure plate 1127 is arranged vertically, the compartment plate 1128 is arranged substantially parallel to the steel beam bottom plate 1122, and one end of the pressure plate 1127 is connected to the steel beam bottom plate 1122, and the other end of the pressure plate 1127 is conveniently connected to one end of the compartment plate 1128, and the other end of the compartment plate 1128 extends toward the direction where the concrete beam 12 is located by an appropriate length, so as to form a steel cell 1124 whose volume can meet the use requirements. The other end of the compartment plate 1128 is extended and welded to the steel bar structure in the concrete beam 12 as a whole, so as to enhance the overall structural strength. In addition, in order to improve the reliability of the connection between the concrete beam 12 and the steel box beam 11 in the steel cell 1124, a plurality of connecting nails 1125 are provided on at least one of the steel beam bottom plate 1122, the pressure plate 1127 and the partition plate 1128 located in the steel cell 1124 area, so as to increase the contact area with the concrete beam 12.

[0035] like Figure 4 As shown, in a possible implementation, in order to improve the reliability of the connection between the concrete beam 12 and the steel box beam 11 located in the steel cell 1124, structural steel plates 1126 are respectively provided in the two steel cells 1124. The structural steel plates 1126 can be welded to the steel plates of the steel cells 1124 and / or the steel bars in the concrete beam 12 according to the design requirements. By combining the structural steel plates 1126 in the concrete beam 12 and forming a whole with the concrete beam 12, the overall structural strength can be enhanced.

[0036] In a possible implementation scheme, the height of the steel cell 1124 is generally set at 600-1000 mm, and does not exceed 1 / 3 of the overall height of the steel box beam 11. The length of the steel cell 1124 is determined according to the force calculation, and is not less than 0.5 times the height of the steel cell 1124, and is preferably set to 2-3 times the height of the steel cell 1124. Casting holes are opened on the steel beam top plate 111, grouting holes are opened on the compartment plate 1128, and air outlet holes are set at the connection between the compartment plate 1128 and the pressure plate 1127 to ensure effective concrete pouring and compact concrete at the connection between the compartment plate 1128 and the pressure plate 1127. The thickness of the pressure steel plate 15 is 20-30 mm.

[0037] like Figure 4 As shown, in the embodiment of the present invention, the hybrid bridge structure further includes a first stiffening rib 14 and a second stiffening rib 15. The first stiffening rib 14 is obliquely arranged on the steel box girder 11, one end of the first stiffening rib 14 is connected to the steel beam top plate 111, and the other end is connected to the compartment assembly connected to the steel beam top plate 111, specifically connected to the pressure plate 1127 connected to the steel beam top plate 111. The second stiffening rib 15 is obliquely arranged on the steel box girder 11, one end of the second stiffening rib 15 is connected to the steel beam bottom plate 1122, and the other end is connected to the compartment assembly connected to the steel beam bottom plate 1122, specifically connected to the pressure plate 1127 connected to the steel beam bottom plate 1122. The arrangement of the first stiffening rib 14 and the second stiffening rib 15 can ensure the local stability of the plate connecting the bottom plate 131 and the connecting web 132. In the specific arrangement, the size and the inclination angle of the first stiffening rib 14 and the second stiffening rib 15 need to be arranged according to the force calculation.

[0038] like Figure 3 and Figure 4 As shown, in a possible implementation, the hybrid bridge structure further includes a diaphragm 16, which is used to strengthen the lateral force of the steel box girder 11. The diaphragm 16 is arranged in the groove 113, and a plurality of diaphragms 16 are spaced along the length direction of the groove 113. In a specific setting, the two ends of each diaphragm 16 are fixedly connected to the corresponding steel beam body 112, and supported between two adjacent steel beam bodies 112. The number of diaphragms 16 and the interval between two adjacent diaphragms 16 are set according to specific setting requirements, and are not limited here.

[0039] like Figure 3As shown, in a possible implementation, a plurality of transverse diaphragms 16 may also be connected to the symmetrically arranged connecting webs 132, and each transverse diaphragm 16 may also be arranged at intervals. Moreover, the transverse diaphragm 16 located in this area increases in length from one end close to the concrete beam 12 to one end far from the concrete beam 12 according to the shape change of the connecting box 13. This arrangement can further enhance the stability of the connecting box 13 structure through the support of each transverse diaphragm 16.

[0040] A hybrid bridge structure provided by an embodiment of the present invention adopts a connection box 13 for the concrete beam 12 to be inserted and connected, which is provided at the position where the groove 113 is close to the concrete beam 12. In this way, the connection box 13 plays a role in closing the opening of the groove 113 at the connection position, so that the cross-section of the steel box beam 11 used for combining with the concrete beam 12 is a whole box cross-section, which can be consistent with the cross-sectional shape of the concrete beam 12 at the combination. Therefore, the steel box beam 11 and the concrete beam 12 at the combination section are both whole box cross-sections, which can avoid drastic changes in stiffness, achieve smooth force transmission between the two, and improve the structural safety of the combination section.

[0041] The embodiment of the present invention also provides a hybrid cable-stayed bridge, including the above hybrid bridge structure. The cable-stayed bridge effectively solves the stiffness and stress mutation problems at the steel-concrete joint section where the steel box girder 11 and the concrete beam 12 are connected by using the above hybrid bridge structure, ensures smooth force transmission at the joint section, and does not cause stiffness mutation, thereby improving the economy and functionality of the hybrid beam cable-stayed bridge, with high innovation, important engineering value and good competitiveness.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hybrid bridge structure, characterized in that: include: A steel box girder, comprising a steel girder top plate and a steel girder body arranged at the bottom of the steel girder top plate, wherein at least two steel girder bodies are arranged at intervals, and a groove opening downward is formed between two adjacent steel girder bodies and the steel girder top plate; Concrete beams are arranged at both ends of the steel box beam and connected to the steel box beam, and the steel box beam and the concrete beam form a bridge deck for traffic; Wherein, a connection box for the concrete beam to be inserted into and connected is provided at a position of the groove close to the concrete beam, and a side of the connection box facing the concrete beam is open.

2. The hybrid bridge structure according to claim 1, characterized in that: The connection box comprises: A connecting bottom plate connected between two adjacent steel beam bodies, wherein the connecting bottom plate is used to seal the downward opening of the groove; A connecting web is arranged in the groove and is respectively connected to the two steel beam bodies, the steel beam top plate and the connecting bottom plate. The connecting web is used to seal the opening of the connecting box body away from the side of the concrete beam.

3. The hybrid bridge structure according to claim 2, characterized in that: The connecting bottom plate is provided with a notch, the notch is open in a direction away from the concrete beam, and one side of the connecting web is connected to the connecting bottom plate along the contour shape of the notch.

4. The hybrid bridge structure according to claim 3, characterized in that: The shape of the notch is symmetrical along the center line of the bridge.

5. The hybrid bridge structure according to claim 3, characterized in that: The width of the notch is gradually expanded in a direction away from the concrete beam.

6. The hybrid bridge structure according to claim 5, characterized in that: The angle between the edge line of the notch and the center line of the bridge is in the range of 40° to 50°.

7. The hybrid bridge structure according to any one of claims 1 to 6, characterized in that: The steel beam body comprises: Steel beam webs are arranged at intervals at the bottom of the steel beam top plate, and one end of the two steel beam webs is fixedly connected to the steel beam top plate; A steel beam bottom plate is arranged between the two steel beam webs and is respectively connected to the other ends of the two steel beam webs; Two compartment assemblies are fixedly connected to the steel beam top plate and the steel beam top plate respectively; Among them, steel cells for the concrete beam to be inserted and connected are respectively formed between the compartment assembly and the steel beam top plate, and between the compartment assembly and the steel beam top plate.

8. The hybrid bridge structure according to claim 7, characterized in that: The hybrid bridge structure further comprises: A first stiffening rib is obliquely arranged on the steel box girder, one end of the first stiffening rib is connected to the steel girder top plate, and the other end is connected to the compartment assembly connected to the steel girder top plate; The second stiffening rib is obliquely arranged on the steel box beam, one end of the second stiffening rib is connected to the bottom plate of the steel beam, and the other end is connected to the compartment assembly connected to the bottom plate of the steel beam.

9. The hybrid bridge structure according to any one of claims 1 to 6, characterized in that: The hybrid bridge structure further comprises: The transverse partition is arranged in the groove and is spaced apart in a plurality along the length direction of the groove.

10. A hybrid cable-stayed bridge, characterized in that: Comprising the hybrid bridge structure as claimed in any one of claims 1 to 9.

Images