Cable-stayed bridge of stand column type side wall cable-stayed tower structure

Abstract

The invention relates to the technical field of stand column type cable-stayed bridges, and discloses a cable-stayed bridge of a stand column type side wall cable-stayed tower structure. The cable-stayed bridge of the stand column type side wall cable-stayed tower structure comprises a pier and a cable-stayed assembly, and the cable-stayed assembly comprises a steel cable, a cable bent tower, a fixing block and an anchoring cylinder; the anchoring cylinder comprises a cylinder body, two round anchor bearing plates, a cylinder, a screw and a nut, wherein the two round anchor bearing plates are oppositely arranged in the cylinder body. The two round anchor bearing plates are arranged at the end of the cylinder, round openings are formed in the round anchor bearing plates, internal threads are formed in the round openings, a screw penetrates through the two round anchor bearing plates, and the ends of the screw are fixed to the end faces of the round anchor bearing plates through nuts so that the round anchor bearing plates and the cylinder can be fixed. And the clamping blocks at the ends of the steel cables are fixed and butt joint of the two steel cables is achieved through the two oppositely-arranged circular anchor bearing plates, the cylinder, the screw and the nut in the anchoring cylinder, and the connection stability is further enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of column type cable-stayed bridges, in particular to a cable-stayed bridge with a column type side wall cable-stayed tower structure. Background Art

[0002] The cable-stayed bridge with column-type side wall cable-stayed tower structure is an important form of modern bridge engineering. Its main function is to greatly improve the spanning capacity and structural stability of the bridge. The design purpose of this type of bridge is to reduce the beam height, enhance the spanning capacity, increase the space under the bridge, and reduce the length of the approach bridge.

[0003] The cable-stayed bridge with column-type side-wall cable-stayed tower structure is mainly composed of cable towers, main beams and cable-stayed cables. The cable towers serve as supporting structures and transfer the tension of the cable-stayed cables to the foundation. The main beams bear the loads of vehicles and pedestrians and transfer these loads to the cable towers through the cable-stayed cables. The cable-stayed cables, as key components, are made of high-strength steel to ensure effective load transfer. Its working principle is to use the combination of cable towers and cable-stayed cables to convert the load of the main beam into the axial pressure of the cable tower and the tension of the cable-stayed cables. In practical applications, the column-type inclined tower cable-stayed bridge has the advantages of light structure, beautiful appearance and strong spanning capacity.

[0004] However, during the actual use of the above equipment, most of the bridge cables are prone to loosening, which often requires maintenance personnel to go for maintenance. At the same time, some birds build nests on the bridge, which affects the anchors of the bridge. In view of this, we propose a cable-stayed bridge with a column-type side wall cable-stayed tower structure. Summary of the invention

[0005] The object of the present invention is to provide a cable-stayed bridge with a column-type side wall cable-stayed tower structure to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A cable-stayed bridge with a column-type sidewall cable-stayed tower structure, comprising a bridge pier, a bridge deck installed on the top of the bridge pier, and a cable-stayed assembly arranged on the bridge deck, the cable-stayed assembly comprising: A steel cable, a waterproof protective layer is fixedly installed on the outer side of the steel cable, and a clamping block is provided on the upper end of the steel cable; At least one pair of cable towers is arranged on the pier and on both sides of the bridge deck, the cable towers include four circular support columns arranged at the four vertices of a square and four square side panels connected in sequence to the circular support columns, the four square side panels surround and form a hollow square column structure; the circular support column and the four square side panels are prefabricated reinforced concrete structures, and the steel bars of the circular support column and the four square side panels are an integrated bundling structure; a crossbeam across the bridge deck is fixedly installed between the top ends of the pair of cable towers, and a plurality of pairs of steel cable holes arranged from top to bottom are opened on the two square side panels arranged along the length direction of the bridge deck, and the upper ends of the steel cables are fixed to the inner sides of the steel cable holes; A fixing block, used for fixing the lower end of the steel cable, wherein the fixing block is fixedly installed at the bottom of the bridge deck; An anchoring cylinder is arranged on the inner side of the square side plate to cooperate with each pair of steel cable holes; the anchoring cylinder comprises a cylinder body and a cylinder, a screw, a nut and two circular anchor plates arranged opposite to each other; wherein the upper ends of a pair of steel cables on both sides of the cable tower pass through the steel cable holes and are fixed in the cylinder by the clamping block to be fixed to the anchoring cylinder; the size of the circular anchor plate is larger than that of the cylinder, the two circular anchor plates are arranged at the ends of the cylinder, and a circular opening is provided on the circular anchor plate, and an internal thread is provided in the circular opening, the screw passes through the two circular anchor plates and the end is fixed to the end face of the circular anchor plate by a nut to fix the circular anchor plate and the cylinder.

[0007] Preferably, the cable-stayed bridge with the column-type side wall cable-stayed tower structure is a single-column cable-stayed bridge, and the number of the cable-stayed components is one.

[0008] Preferably, the cable-stayed bridge with the column-type side wall cable-stayed tower structure is a multi-column cable-stayed bridge, and the number of the cable-stayed assemblies is multiple.

[0009] Preferably, the middle section of the screw is a right-hand helix, the left end of the screw is a number one left-hand helix, and the right end of the screw is a number two left-hand helix.

[0010] Preferably, a supporting structure is provided on the side wall of the clamping block, and the number of the supporting structures matches the circular opening; each of the supporting structures includes a hole opened on the side wall of the clamping block, a strong spring and a clamping protrusion protruding out of the hole are provided in the hole, and a clamping groove for the clamping protrusion is provided on the circular anchor plate of the hole; the hole clamping protrusion is used to resist the nut.

[0011] Preferably, a transverse block extending along the axial direction of the cylinder is provided on the outer side of the cylinder, and a clamping ring is fixedly installed on the free end of the transverse block 35, and the clamping ring is used to clamp the screw.

[0012] Preferably, it also includes a protective component sleeved on the position of the steel cable close to the cable tower; the protective component includes a sleeve sleeved on the outside of the waterproof protective layer, and an elliptical plate fixed to the outside of the waterproof protective layer and located in the sleeve; the inner side surface of the end of the sleeve away from the cable tower forms a step convex, and a threaded spring is supported between the step convex and the elliptical plate.

[0013] Preferably, the other end of the sleeve is fixed to the cable tower.

[0014] Preferably, an alarm component is provided on the outside of the tower, and the alarm component includes a base plate and a protective shell, the alarm component is fixed to the top of the tower through the base plate, a motor is fixedly installed inside the protective shell, a blade is fixedly installed at the output end of the motor, a conical block is fixedly installed at the output end of the motor, a straight rod protrudes from the conical block, a wind trough is fixedly installed at the free end of the straight rod, a short rod is also connected to the outside of the conical block, and an alarm light is fixedly installed at the free end of the short rod.

[0015] Preferably, an integrated sensor is also provided at the steel cable hole, and an independent signal light is also installed at a position of the square side panel corresponding to the integrated sensor.

[0016] Compared with the prior art, the present invention provides a cable-stayed bridge with a column-type side wall cable-stayed tower structure, which has the following beneficial effects: 1. In order to further improve the bearing capacity and durability of the bridge and ensure the safe use of the bridge, the circular support columns at the four corners of the cable tower are used to enhance the structural strength; the inside of the anchor tube uses two relatively arranged circular anchor pads, a cylinder, a screw and a nut to fix the clamping block at the end of the steel cable and realize the docking of the two steel cables, thereby further enhancing the stability of the connection.

[0017] 2. In order to reduce the potential safety hazards caused by loose connections, a supporting structure is provided on the side wall of the clamping block to support the nut and prevent the nut from loosening due to vibration and other factors; the horizontal block and the clamping ring on the cylinder are arranged on the outside of the screw to further limit the displacement of the screw, thereby effectively maintaining the tightness of the cable connection during the long-term use of the bridge.

[0018] 3. In order to further reduce the fatigue damage caused by frequent changes in force on the steel cable, a protective component is provided. The component cooperates with the sleeve to provide sliding space for the elliptical plate on the waterproof protective layer. The step cam and the threaded spring play a buffering role. When external forces such as lateral wind force and impact of foreign objects act on the steel cable, the elliptical plate can move in the sleeve, and the threaded spring absorbs part of the energy to reduce the direct impact of external force on the steel cable. When the steel cable is accidentally disconnected, the elliptical plate squeezes the threaded spring to absorb part of the impact energy, so that the steel cable will not fall and cause damage to pedestrians and vehicles.

[0019] 4. In order to enable the device to detect potential safety problems in a timely manner and send out early warning signals, an alarm component is provided. The rotation of the blades can prevent birds from building nests in the tower, and the integrated sensor can be triggered, thereby lighting up the independent indicator light and the alarm light. The alarm light prompts the maintenance personnel which tower has a problem, and the independent indicator light prompts the maintenance personnel which steel cable has a problem, thereby being able to detect potential safety problems in a timely manner and send out early warning signals, making it convenient for maintenance personnel to take timely measures. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic top view of a cable-stayed bridge structure in one embodiment of the present invention; Figure 2 It is a top view schematic diagram of a part of the structure of the present invention; Figure 3 It is a cross-sectional and top view schematic diagram of a part of the structure of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure of the middle A area; Figure 5 for Figure 1 A side view and cross-sectional schematic diagram of a portion of the structure at the top of a cable tower of a medium cable-stayed bridge; Figure 6 for Figure 1 A schematic cross-sectional view of a portion of the structure at the top of a cable tower of a medium cable-stayed bridge; Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure of the middle B area; Figure 8 For the present invention Figure 6 Schematic diagram of the enlarged structure of the middle C area; Fig. 9 It is a schematic diagram of the structure and cross section of the anchor tube in the present invention; Fig.10 It is a top view schematic diagram of the screw structure in the present invention.

[0021] Fig.11 It is a schematic top view of the partial structure of the alarm component in the present invention; Fig.12 It is a partial structural schematic diagram of the circular support column of the cable tower and the four square side panels in the present invention; DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0023] See also Figure 1-Figure 12 The present invention provides a technical solution: a cable-stayed bridge with a column-type side wall cable-stayed tower structure, including a pier 6 and a bridge deck 1 installed on the top of the pier 6.

[0024] In one embodiment of the present invention, a cable-stayed assembly 2 is provided on the bridge deck 1 .

[0025] When the cable-stayed bridge with the column-type side wall cable-stayed tower structure is a single-column cable-stayed bridge, the number of the cable-stayed assembly 2 is one.

[0026] When the cable-stayed bridge with the column-type side-wall cable-stayed tower structure is a multi-column cable-stayed bridge, the number of the cable-stayed assemblies 2 is multiple. Figure 1 What is shown in FIG. 1 is a multi-column cable-stayed bridge.

[0027] The inclined stay assembly 2 comprises: A steel cable 23, a waterproof protective layer 25 is fixedly mounted on the outer side of the steel cable 23, and a clamping block 26 is provided on the upper end of the steel cable 23; At least one pair of cable towers is arranged on the pier 6 and located on both sides of the bridge deck 1, the cable towers include four circular support columns 22 arranged at the four vertices of a square and four square side panels 21 connected in sequence to the circular support columns 22, the four square side panels 21 surround a hollow square column structure; the circular support columns 22 and the four square side panels 21 are prefabricated reinforced concrete structures, and the steel bars of the circular support columns 22 and the four square side panels 21 are an integrated bundling structure; a crossbeam 211 spanning the bridge deck 1 is fixedly installed between the top ends of the pair of cable towers, and a plurality of pairs of steel cable holes 212 arranged from top to bottom are opened on the two sides of the square side panels 21 arranged along the length direction of the bridge deck 1, and the upper ends of the steel cables 23 are fixed to the inner sides of the steel cable holes 212; A fixing block 24, used for fixing the lower end of the steel cable 23, and the fixing block 24 is fixedly installed at the bottom of the bridge deck 1; An anchoring cylinder 210 is arranged on the inner side of the square side plate 21 to cooperate with each pair of the steel cable holes 212; the anchoring cylinder 210 includes a cylinder body and a cylinder 38, a screw 28, a nut 29 and two circular anchor pads 27 arranged opposite to each other; wherein the upper ends of a pair of the steel cables 23 on both sides of the cable tower pass through the steel cable holes 212 and are fixed in the cylinder 38 by the clamping block 26 to be fixed to the anchoring cylinder 210; the size of the circular anchor pad 27 is larger than the size of the cylinder 38, the two circular anchor pads 27 are arranged at the ends of the cylinder 38, and a circular opening (not shown) is opened on the circular anchor pad 27, and an internal thread is opened in the circular opening, the screw 28 passes through the two circular anchor pads 27 and the end is fixed to the end face of the circular anchor pad 27 by the nut 29 to fix the circular anchor pad 27 and the cylinder 38.

[0028] Specific, combined Fig.10 The middle section of the screw rod 28 is a right spiral 281 , the left end of the screw rod 28 is a left spiral 282 No. 1 , and the right end of the screw rod 28 is a left spiral 283 No. 2 .

[0029] First, with the bridge piers as the basic support, the circular support columns 22 at the four corners of the cable tower enhance the structural strength; the interior of the anchor tube 210 uses a cylinder 38, a screw rod 28, a nut 29 and two relatively arranged circular anchor pads 27 to fix the clamping block 26 at the end of the steel cable 23 and achieve the docking of the two steel cables 23, further enhancing the stability of the connection.

[0030] In one embodiment of the present invention, a supporting structure is provided on the side wall of the clamping block 26, and the number of the supporting structures matches the circular opening; each of the supporting structures includes a hole opened on the side wall of the clamping block 26, a strong spring and a clamping protrusion 37 protruding out of the hole are provided in the hole, and a clamping groove for the clamping protrusion 37 is provided on the circular anchor plate 27; the hole clamping protrusion 37 is used to resist the nut 29, thereby preventing the nut 29 from loosening.

[0031] In one embodiment of the present invention, a horizontal block 35 extending along the axial direction of the cylinder 38 is provided on the outside of the cylinder 38, and a clamping ring 36 is fixedly installed on the free end of the horizontal block 35, and the clamping ring 36 is used to clamp the screw rod 28. Multiple groups of clamping rings 36 are arranged on the outside of the screw rod 28 to further limit the displacement of the screw rod 28, thereby effectively maintaining the tightness of the cable connection during the long-term use of the bridge.

[0032] In one embodiment of the present invention, a protective component 4 is sleeved on the position of the steel cable 23 close to the cable tower; the protective component 4 includes a sleeve 42 sleeved on the outside of the waterproof protective layer 25, and an elliptical plate 41 fixed on the outside of the waterproof protective layer 25 and located in the sleeve 42; the inner side surface of the end 43 of the sleeve 42 away from the cable tower forms a step convex 44, and a threaded spring 45 is held between the step convex 44 and the elliptical plate 41. The sleeve 42 provides a sliding space for the elliptical plate 41 on the waterproof protective layer 25, and the step convex 44 and the threaded spring 45 play a buffering role. When external forces such as lateral wind force and foreign body impact act on the steel cable 23, the elliptical plate 41 can move in the sleeve 42, and the threaded spring 45 absorbs part of the energy, reducing the direct impact of external forces on the steel cable 23, and when the steel cable 23 is accidentally disconnected, the elliptical plate 41 squeezes the threaded spring 45 to absorb part of the impact energy, so that the steel cable 23 will not fall and cause damage to pedestrians and vehicles. Furthermore, the other end of the sleeve 42 is fixed to the cable tower, which can further absorb the direct impact of external force on the steel cable 23.

[0033] In one embodiment of the present invention, an alarm component 5 is provided on the outside of the cable tower, and the alarm component 5 includes a base plate 51 and a protective shell 52. The alarm component 5 is fixed to the top of the cable tower through the base plate 51, and a motor 53 is fixedly installed inside the protective shell 52. A blade 54 is fixedly installed at the output end of the motor 53, and a conical block 55 is fixedly installed at the output end of the motor 53. A straight rod 56 protrudes from the conical block 55, and a wind groove 57 is fixedly installed at the free end of the straight rod 56. A short rod 58 is also connected to the outside of the conical block 55, and an alarm light 59 is fixedly installed at the free end of the short rod 58.

[0034] The rotation of the blades can prevent birds from building nests in the cable tower. The integrated sensor 510 is electrically connected to the alarm light 59 and the independent indicator light 511. When the integrated sensor 510 detects a set warning threshold, an alarm signal can be sent to the alarm light 59 and the independent indicator light 511. The integrated sensor 510 can be triggered, thereby lighting up the independent indicator light 511 and the alarm light 59. The alarm light 59 reminds the maintenance personnel which cable tower has a problem, and the independent indicator light 511 reminds the maintenance personnel which steel cable 23 has a problem, so that potential safety problems can be discovered in time and warning signals can be issued, so that the maintenance personnel can take timely measures.

[0035] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A cable-stayed bridge with a column-type side-wall cable-stayed tower structure, comprising a bridge pier (6), a bridge deck (1) installed on the top of the bridge pier (6), and characterized in that: A cable-stayed assembly (2) is provided on the bridge deck (1), and the cable-stayed assembly (2) comprises: A steel cable (23), a waterproof protective layer (25) 313 being fixedly mounted on the outer side of the steel cable (23), and a clamping block (26) being provided at the upper end of the steel cable (23); At least one pair of cable towers is arranged on the pier (6) and located on both sides of the bridge deck (1), the cable towers comprising four circular support columns (22) arranged at four vertices of a square and four square side panels (21) connected in sequence to the circular support columns (22), the four square side panels (21) surrounding a hollow square column structure; the circular support columns (22) and the four square side panels (21) are prefabricated reinforced concrete structures, and the steel bars of the circular support columns (22) and the four square side panels (21) are an integrated bundling structure; a crossbeam (211) spanning the bridge deck (1) is fixedly installed between the top ends of the pair of cable towers, and a plurality of pairs of steel cable holes (212) arranged from top to bottom are opened on the two sides of the square side panels (21) arranged along the length direction of the bridge deck (1), and the upper ends of the steel cables (23) are fixed to the inner sides of the steel cable holes (212); A fixing block (24) for fixing the lower end of the steel cable (23), wherein the fixing block (24) is fixedly installed at the bottom of the bridge deck (1); An anchoring cylinder (210) is arranged on the inner side of the square side plate (21) to match each pair of the steel cable holes (212); the anchoring cylinder (210) comprises a cylinder body, a cylinder (38) arranged inside the cylinder body, a screw rod (28), a nut (29) and two circular anchor pads (27) arranged opposite to each other; wherein the upper ends of a pair of the steel cables (23) on both sides of the cable tower pass through the steel cable holes (212) and are fixed in the cylinder (38) through the clamping blocks (26) so as to be connected with the anchoring cylinder (210). The circular anchor plate (27) is larger than the cylinder (38), the two circular anchor plates (27) are arranged at the ends of the cylinder (38), and the circular anchor plates (27) are provided with a circular opening, the circular opening is provided with an internal thread, the screw (28) passes through the two circular anchor plates (27) and the end is fixed to the end surface of the circular anchor plate (27) by a nut (29), so as to fix the circular anchor plate (27) and the cylinder (38).

2. The cable-stayed bridge with a column-type side wall cable-stayed tower structure according to claim 1, characterized in that: The cable-stayed bridge with the column-type side-wall cable-stayed tower structure is a single-column cable-stayed bridge, and the number of the cable-stayed components (2) is one.

3. The cable-stayed bridge with a column-type side wall cable-stayed tower structure according to claim 1, characterized in that: The cable-stayed bridge with the column-type side wall cable-stayed tower structure is a multi-column cable-stayed bridge, and the number of the cable-stayed assemblies (2) is multiple.

4. The cable-stayed bridge with a column-type side wall cable-stayed tower structure according to claim 1, characterized in that: The middle section of the screw rod (28) is a right spiral (281), the left end of the screw rod (28) is a number one left spiral (282), and the right end of the screw rod (28) is a number two left spiral (283).

5. The cable-stayed bridge with a column-type side wall cable-stayed tower structure according to claim 1, characterized in that: A supporting structure is provided on the side wall of the clamping block (26), and the number of the supporting structures matches the circular opening; each of the supporting structures comprises a hole opened on the side wall of the clamping block (26), a strong spring and a clamping protrusion (37) protruding out of the hole are arranged in the hole, and a clamping groove for the clamping protrusion (37) is opened on the circular anchor plate (27); the hole clamping protrusion (37) is used to resist the nut (29).

6. The cable-stayed bridge with a column-type side-wall cable-stayed tower structure according to claim 4, characterized in that: A transverse block (35) extending along the axial direction of the cylinder (38) is provided on the outer side of the cylinder (38), and a clamping ring (36) is fixedly mounted on the free end of the transverse block (35), and the clamping ring (36) is used to clamp the screw rod (28).

7. The cable-stayed bridge with a column-type side-wall cable-stayed tower structure according to claim 1, characterized in that: The invention also comprises a protection component (4) sleeved on a position of the steel cable (23) close to the cable tower; the protection component (4) comprises a sleeve (42) sleeved on the outside of the waterproof protective layer (25), and an elliptical plate (41) fixed on the outside of the waterproof protective layer (25) and located inside the sleeve (42); a step protrusion (44) is formed on the inner side surface of the end (43) of the sleeve (42) away from the cable tower, and a threaded spring (45) is held between the step protrusion (44) and the elliptical plate (41).

8. The cable-stayed bridge with a column-type side-wall cable-stayed tower structure according to claim 7, characterized in that: The other end of the sleeve (42) is fixed to the cable tower.

9. The cable-stayed bridge with a column-type side wall cable-stayed tower structure according to claim 1, characterized in that: An alarm component (5) is arranged on the outside of the cable tower. The alarm component (5) comprises a bottom plate (51) and a protective shell (52). The alarm component (5) is fixed to the top of the cable tower via the bottom plate (51). A motor (53) is fixedly mounted inside the protective shell (52). A blade (54) is fixedly mounted on the output end of the motor (53). A conical block (55) is fixedly mounted on the output end of the motor (53). A straight rod (56) protrudes from the conical block (55). A wind trough (57) is fixedly mounted on the free end of the straight rod (56). A short rod (58) is also connected to the outside of the conical block (55). An alarm light (59) is fixedly mounted on the free end of the short rod (58).

10. The cable-stayed bridge with a column-type side-wall cable-stayed tower structure according to claim 9, characterized in that: An integrated sensor (510) is also provided at the steel cable hole (212), and an independent signal light (511) is also installed at a position of the square side plate (21) corresponding to the integrated sensor (510).

Images