Cable-stayed bridge cable tower opposite-pulling device
By using hinged tie rods at the bifurcation points of the towers in cable-stayed bridges, the problems of anchor cables affecting tower quality and low construction efficiency were solved, enabling convenient anchor cable replacement and prestress adjustment, and improving construction efficiency.
Patent Information
- Application Number
- CN202520377747.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-05
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-05
AI Technical Summary
In existing cable-stayed bridges, the anchor cables at the bifurcation points of the towers pass through the tower columns, which affects the quality of the tower columns. Furthermore, the tension of the anchor cables decreases after tensioning, and the construction consumes a lot of manpower and resources and takes a long time.
The tension assembly, which uses a hinged connection, includes lugs and a support frame, and is connected by anchor cables and tensioning members. The support structure is designed to be detachable, which facilitates anchor cable replacement and prestress adjustment.
It reduces the damage of anchor cables to the tower column, simplifies the construction process, improves construction efficiency, and facilitates the replacement of anchor cables and adjustment of prestress.
Smart Images
Figure CN223853193U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bridge construction technical field, especially a cable -stayed bridge cable -stayed tower counter -pulley device. BACKGROUND
[0002] In the cable -stayed bridge system, the middle tower limb is in the middle of the cable -stayed bridge, and the middle tower limb provides a vertical anchorage point for the stay cable, which lifts the main beam through the stay cable, thereby reducing the midspan bending moment of the main beam, so that the bridge can span a larger distance. The bifurcation position of the Y-shaped middle tower limb will be subjected to a larger tension, and the bifurcation position of the middle tower limb is prone to damage and thus safety hazards. A counter -pulley device needs to be provided at the bifurcation position of the middle tower limb. In the prior art, an anchor cable is provided at the bifurcation position, and the anchor cable passes through the tower column to hold the tower column at the bifurcation position. In this way, the anchor cable passing through the tower column can affect the quality of the tower column, thereby making the middle tower limb more prone to damage. The tension of the anchor cable will decrease after a long time of tensioning. The tensioning jack can only be transported to the upper end of the middle tower limb to tension the anchor cable, which requires a large amount of manpower and material resources and a long construction time. SUMMARY
[0003] In view of the technical problems in the background art, the purpose of the utility model is to provide a cable -stayed bridge cable -stayed tower counter -pulley device, which is convenient for adjusting the prestress of the anchor cable on the middle tower limb and convenient for replacing the anchor cable later.
[0004] To achieve the above-mentioned purpose, the utility model provides a technical scheme:
[0005] A cable -stayed bridge cable -stayed tower counter -pulley device, comprising a counter -pulley assembly and a connecting piece, the counter -pulley assembly is composed of at least two counter -pulley structures, the counter -pulley structure is connected to the tower limb, the counter -pulley structure comprises an ear seat arranged on the tower limb and a support frame hinged to the ear seat, the connecting piece comprises an anchor cable and a tensioning piece, the anchor cable is arranged between the counter -pulley structures on different tower limbs, the tensioning piece is connected to one of the counter -pulley structures, and one end of the tensioning piece is connected to the anchor cable.
[0006] As a preferred, the counter -pulley structure comprises a counter -pulley structure I and a counter -pulley structure II, both ends of the anchor cable are provided with an anchor device respectively, the anchor cable passes through the support frame, and the anchor device is connected inside the counter -pulley structure I and the counter -pulley structure II respectively.
[0007] As a preferred, the counter -pulley assembly further comprises a support structure, the support structure comprises a first support piece and a second support piece, the first support piece is connected inside the counter -pulley structure I, and the second support piece is connected inside the counter -pulley structure II.
[0008] As a preferred, the counter -pulley structure I comprises a support frame I and an ear seat I, the first support piece comprises an abutting plate, the abutting plate is detachably connected inside the support frame I and abuts against the anchor device.
[0009] Preferably, the support frame I is internally provided with a sliding groove, and the abutting plate is slidably connected in the sliding groove.
[0010] Preferably, the counter-pulling structure II comprises a support frame II and an ear seat II, the second support member comprises a baffle, the baffle is detachably connected in the support frame II, and the tensioning member is detachably connected with the baffle.
[0011] Preferably, the second support member further comprises a support plate, the support plate is internally provided with a through groove, the support plate is detachably connected with the support frame II, and the tensioning member extends into the through groove.
[0012] The utility model has the advantages and beneficial effects that:
[0013] In the utility model, the ear seat and the support frame are hingedly connected, so that the difficulty in installation is reduced, the support plate and the baffle are detachably connected with the support frame II, the connection strength is guaranteed, and the support plate and the baffle are convenient to disassemble and assemble, the abutting plate and the support frame I are detachably connected, and the overall structure is detachably designed, so that the anchor cable or the tensioning jack can be conveniently disassembled and replaced when the anchor cable or the tensioning jack is damaged and needs to be replaced. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 The utility model provides a kind of connection position schematic view of cable-stayed bridge cable tower counter-pulling device.
[0015] Figure 2 The utility model provides a kind of middle tower limb structure schematic view of cable-stayed bridge cable tower counter-pulling device.
[0016] Figure 3 The utility model provides a kind of plan view of cable-stayed bridge cable tower counter-pulling device.
[0017] Figure 4 The utility model provides a kind of section view of cable-stayed bridge cable tower counter-pulling device.
[0018] Figure 5 The utility model provides a kind of three-dimensional view of counter-pulling structure I of cable-stayed bridge cable tower counter-pulling device.
[0019] Figure 6 The utility model provides a kind of three-dimensional view of counter-pulling structure II of cable-stayed bridge cable tower counter-pulling device.
[0020] Fig. 1 is a middle tower limb, Fig. 2 is a counter-pulling structure I, Fig. 21 is a support frame I, Fig. 221 is a sliding groove, Fig. 22 is an ear seat I, Fig. 23 is an abutting plate, Fig. 3 is a counter-pulling structure II, Fig. 31 is a support frame II, Fig. 32 is an ear seat II, Fig. 33 is a baffle, Fig. 34 is a support plate, Fig. 341 is a through groove, Fig. 4 is an anchor cable, Fig. 41 is an anchor device, Fig. 5 is a tensioning jack, and B is a bifurcation position. DETAILED DESCRIPTION
[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.
[0022] 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 merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0023] Example
[0024] like Figures 1-6 As shown, a cable-stayed bridge tower tie rod device includes tie rod components and connectors. The tie rod components include at least two tie rod structures and a support structure connected to the tie rod structures. The tie rod structures are connected at the bifurcation position B of the middle tower limb 1. The tie rod structure includes an ear seat set on the middle tower limb 1 and a support frame hinged to the ear seat. If a rigid connection is used, the position between the tie rod structures needs to be very accurate. Otherwise, one of the tie rod structures will continuously rub against the anchor cable 4, which will increase the local stress on the anchor cable 4 and make the anchor cable 4 more prone to damage. When a hinged connection is used, errors are allowed during the installation of the tie rod structures. The tie rod structures will be in relative positions, and the tie rod structures will not exert pressure on the anchor cable 4. This not only ensures a better tie rod effect but also maximizes the quality of the anchor cable 4.
[0025] The tension structure includes tension structure I2 and tension structure II3. Tension structure I2 includes a hinged support frame I21 and a lug I22, and tension structure II3 includes a hinged support frame II31 and a lug II32. The connecting components include an anchor cable 4 and a tensioning element. The anchor cable 4 is located between tension structure I2 and tension structure II3, and anchors 41 are respectively provided at both ends of the anchor cable 4. The anchor cable 4 passes through the support frames (support frame I21 and support frame II31), and the anchors 41 are respectively connected inside tension structure I2 and tension structure II3. The tensioning element is a tensioning jack 5, which is connected inside tension structure II3, and one end of the tensioning jack 5 is connected to the anchor cable 4.
[0026] like Figures 1-6As shown, the support structure includes a first support and a second support, the first support is connected in the counter-pulling structure I 2, the first support includes an abutting plate 23, a sliding groove 221 is arranged inside the support frame I 2121, the abutting plate 23 is slidably connected in the sliding groove 221, the abutting plate 23 and the support frame I 2121 are aligned to be provided with bolt holes, the bolts are penetrated into the bolt holes, the abutting plate 23 is fixedly connected with the support frame I 2121 through the bolts, at the same time, the abutting plate 23 and the anchor device 41 abut, when the abutting plate 23 is connected, it can be directly slid into according to the shape of the sliding groove 221, and when the abutting plate 23 is put into the sliding groove 221, the bolt holes on the abutting plate 23 and the bolt holes on the support frame I 2121 are aligned, the sliding groove 221 can ensure the accuracy of the installation of the abutting plate 23. The second support is connected in the counter-pulling structure II 3, the second support includes a baffle 33 and a support plate 34, the baffle 33 is a I-shaped, the support plate 34 is a I-shaped, the baffle 33 is detachably connected inside the support frame II 3131, and the tensioning jack 5 and the baffle 33 are fixedly connected through the bolts, the baffle 33 supports the tensioning jack 5, preventing the tensioning jack 5 from axially sliding, the support plate 34 is provided with a through groove 341 inside, the support plate 34 and the support frame II 3131 are fixedly connected through the bolts, the tensioning jack 5 extends into the through groove 341, and the support plate 34 and the baffle 33 jointly support the tensioning jack 5, so that the tensioning jack 5 stably operates in the working process.
[0027] As shown in the figure, Figures 1-6 As shown, one end of the anchor cable 4 is first connected with the anchor device 41, and the anchor device 41 is connected in the support frame I 2121, the anchor cable 4 passes through the support frame I 2121 and extends into the support frame II 3131, the baffle 33, the support plate 34 and the tensioning jack 5 are connected and then put into the support frame II 3131, the baffle 33 is fixed on the support frame II 3131 through the bolts, the support plate 34 is fixed on the support frame II 3131 through the bolts, the tensioning jack 5 and one end of the anchor cable 4 are connected, the abutting plate 23 is slid into the support frame I 2121, the abutting plate 23 and the anchor device 41 abut, and the abutting plate 23 and the support frame I 2121 are connected through the bolts, the lug seat I 222 and the lug seat II 332 are respectively connected at the bifurcation position B of the middle tower limb 1, the tensioning jack 5 is driven to work, the anchor cable 4 is tensioned, the stretching direction of the anchor cable 4 is opposite to the stress direction of the middle tower limb 1, the counter-pulling device can be used to improve the stress of the bifurcation point of the middle tower limb 1 and reduce the pressure of the middle tower limb 1, the whole structure is designed in a detachable manner, when the anchor cable 4 is damaged, it is convenient to disassemble and replace, compared with the traditional technology, the counter-pulling device does not damage the structure of the middle tower limb 1, and at the same time, the prestress of the anchor cable 4 can be timely adjusted through the tensioning jack 5.
[0028] The above merely is preferred embodiment of the present utility model, and is not used for limiting the present utility model, for the person skilled in the art, the present utility model can have various changes and changes, and any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the present utility model should be contained in the protection scope of the present utility model.
Claims
1. A cable-stayed bridge cable tower counter-pulling device, comprising a counter-pulling assembly and a connecting piece, characterized in that, The pair-pulling assembly comprises at least two pair-pulling structures connected to the tower limbs, the pair-pulling structure comprises an ear seat arranged on the tower limb and a support frame hinged to the ear seat, the connecting piece comprises an anchor cable and a tensioning piece, the anchor cable is arranged between the pair-pulling structures on different tower limbs, the tensioning piece is connected in one of the pair-pulling structures, and one end of the tensioning piece is connected to the anchor cable.
2. The cable-stayed bridge tower tensioning device according to claim 1, characterized in that, The pair-pulling structure comprises a pair-pulling structure I and a pair-pulling structure II, both ends of the anchor cable are provided with anchor clamps, the anchor cable passes through the support frame, and the anchor clamps are connected inside the pair-pulling structure I and the pair-pulling structure II respectively.
3. The cable-stayed bridge tower tensioning device according to claim 2, characterized in that, The pair-pulling assembly further comprises a support structure, the support structure comprises a first support piece and a second support piece, the first support piece is connected inside the pair-pulling structure I, and the second support piece is connected inside the pair-pulling structure II.
4. The cable-stayed bridge tower tensioning device according to claim 3, characterized in that, The pair-pulling structure I comprises a support frame I and an ear seat I, the first support piece comprises an abutting plate, the abutting plate is detachably connected inside the support frame I and abuts against the anchor clamp.
5. The cable-stayed bridge tower tensioning device according to claim 4, characterized in that, The support frame I is internally provided with a sliding groove, and the abutting plate is slidably connected inside the sliding groove.
6. The cable-stayed bridge tower tensioning device according to claim 3, characterized in that, The pair-pulling structure II comprises a support frame II and an ear seat II, the second support piece comprises a baffle, the baffle is detachably connected inside the support frame II, and the tensioning piece is detachably connected to the baffle.
7. The cable-stayed bridge tower tensioning device according to claim 6, characterized in that, The second support piece further comprises a support plate, the support plate is internally provided with a through groove, the support plate is detachably connected to the support frame II, and the tensioning piece extends into the through groove.