CN210031505U - Connecting structure of stay cable and cable tower for cable-stayed bridge - Google Patents
Connecting structure of stay cable and cable tower for cable-stayed bridge Download PDFInfo
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- CN210031505U CN210031505U CN201920542360.2U CN201920542360U CN210031505U CN 210031505 U CN210031505 U CN 210031505U CN 201920542360 U CN201920542360 U CN 201920542360U CN 210031505 U CN210031505 U CN 210031505U
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Abstract
The utility model belongs to cable-stay bridge structure field specifically is a connection structure of cable and cable tower for cable-stay bridge. The cable-stayed bridge adopts a lattice type steel pipe cable tower, and a tower column of the cable tower consists of a plurality of steel pipes; the connecting structure is a pipe sleeve which can be embedded in a tower column steel pipe of the cable tower, and the pipe sleeve can be tightly sleeved outside the tower column steel pipe and fixed; the side wall of the pipe sleeve is provided with a convex stay cable connecting device; one end of the stay cable is connected with the main beam of the bridge body, and the other end of the stay cable is connected with the stay cable connecting device. The utility model discloses an use can make the stay cable power directly transmit to the column, simplify the structural design of cable tower, reduce the degree of difficulty of cable tower construction, make arranging of space cable change the realization.
Description
Technical Field
The utility model belongs to cable-stay bridge structure field, concretely relates to a connection structure of cable and cable tower for cable-stay bridge.
Background
In the design of a cable-stayed bridge, in order to increase the landscape effect of a bridge tower, the cross section of the bridge tower is designed into an equilateral polygon consisting of a plurality of steel pipes, and the vertical surface of the bridge tower is in a needle shape or other shapes. The lattice type bridge tower is different from a concrete cable tower or a steel cable tower formed by welding steel plates adopted in the design of a conventional cable-stayed bridge, the tower columns, the parallel connection and the like of the lattice type bridge tower are all formed by welding steel pipes, and the anchoring type introduced in the design rule of highway cable-stayed bridges (JTG/T D65-01-2007) is not suitable due to the difference of the structural types.
In lattice type bridge towers, the currently adopted stay cable anchoring mode is as follows: and anchoring the stay cable on the transverse steel pipe between the towers. The transmission path of the stay cable force is as follows: anchor backing plate → pressure-bearing pipe → transverse connection → tower column; see fig. 2. There are the following disadvantages: a. the cable force needs to be transmitted to a tower column of the cable tower through a cross-linked steel pipe, the cross-linked steel pipe is a bent component, and the intersection part of the cross-linked steel pipe and the tower column is subjected to a larger local bending moment; b. the stay cable penetrates through the parallel steel pipe for anchoring, and when the stay cable is a spatial cable surface, the intersecting line of the stay cable is in a spatial angle, so that the requirement on lofting is high; c. the stay cable is anchored in the transverse connection, the arrangement space of the anchor head of the stay cable between the tower columns is narrow, and the situation that the anchor head, the anchor head and the tower columns are possibly contacted with each other can occur; d. because the cross-linked steel pipe is subjected to an oblique external force, a thick pipe diameter is needed, and concrete and the like are also needed to be poured into the cross-linked steel pipe so as to improve the local bearing strength of the cross-linked steel pipe.
The existing anchoring mode has the need of optimization in the aspects of force transmission anchoring way, structural design, construction convenience and the like. The lattice type bridge tower is welded by steel pipes, and the tower column is a steel pipe structure, and a structure similar to a main cable clamp of a suspension bridge is introduced to realize the anchoring of a stay cable on the bridge tower.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a simple structure reduces cable tower burden's the cable-stay bridge's that is used for lattice steel pipe bridge tower connection structure with the cable tower.
The utility model provides a connection structure of a cable and a cable tower for a cable-stayed bridge, the cable-stayed bridge adopts a lattice type steel pipe cable tower (bridge tower), a tower column of the cable tower consists of a plurality of steel pipes, and the number of the steel pipes is determined according to the actual design requirement;
the connection structure of the guy cable and the cable tower is as follows: the pipe sleeve can be embedded in a tower column steel pipe of a cable tower (bridge tower), and the pipe sleeve can be tightly sleeved outside the tower column steel pipe and fixed; the side wall of the pipe sleeve is provided with a convex stay cable connecting device; one end of the stay cable is connected with the main beam of the bridge body, and the other end of the stay cable is connected with the stay cable connecting device.
In the utility model, the pipe sleeve is divided into two detachable semi-cylindrical pipe sleeves, and the stay cable connecting device is arranged on one semi-cylindrical pipe sleeve; two butt joint edges of the two semi-cylindrical pipe sleeves are respectively provided with butt joint blocks corresponding to each other, the butt joint blocks protrude out of the outer surfaces of the pipe sleeves and are provided with butt-penetrating screw holes; the butt joint blocks of the two semi-cylindrical pipe sleeves can be tightly attached after the two semi-cylindrical pipe sleeves cover the tower column steel pipe, the positions of the through screw holes are overlapped, the long rod screw penetrates through the through screw holes, and the nut is screwed on the end part of the long rod screw for fastening.
In the utility model, the stay cable connecting device is an ear plate; the cable end of the stay cable is provided with a fork ear (a fork ear ring); the ear plate and the fork lug are provided with corresponding through holes, the ear plate is inserted into the fork lug, the fork lug and the ear plate are connected by penetrating through the through holes of the ear plate and the fork lug through a pin shaft, and the end part of the pin shaft is screwed tightly through a nut so as to connect the stay cable connecting device and the stay cable.
The utility model discloses in, otic placode 2 is the monolithic, perhaps is the V-arrangement for the biplate, and is decided according to actual bridge design.
The utility model discloses a pipe box carries out the staple bolt to the pylon steel pipe earlier, and the otic placode that again passes through to stretch out is connected with the fork ear end of suspension cable. The advantages are that:
1) the force transmission of the stay cable is more definite: the cable force of the stay cable directly acts on the tower column to generate a vertical component force along the tower column and a horizontal component force vertical to the tower column, the tower column is of a steel pipe structure, the section of the tower column is larger than that of a transverse steel pipe, the tower column is a bending component under the action of the cable force, the bending resistance of the tower column is larger than that of the transverse steel pipe, the condition of force transmission through an angular point does not exist, and the force transmission is more reliable;
2) the cable tower is simpler in structural design: the stay cable directly acts on the tower column, the cross-linked steel pipe only needs to play a role in transverse connection between the tower columns, the diameter of the cross-linked steel pipe can be reduced compared with the prior art, lap welding of cross-linked branch pipes can be avoided, and welding workload and welding difficulty are reduced;
3) further reduce the construction degree of difficulty of cable tower: because the cable tower is higher, and the hinged support is arranged at the bottom of the tower according to design requirements, the construction is generally carried out by adopting a method of horizontally welding segments into a whole and then vertically rotating, the size of the transverse connecting steel pipe is reduced after the pipe clamp construction is adopted, concrete does not need to be poured into the transverse connecting steel pipe, the weight of the tower is reduced, and the vertical rotating construction is facilitated; in addition, concrete in the original transverse steel pipe is generally constructed by a pumping method, and when the bridge tower is higher, the pressure of the pump is higher, so that the construction has certain difficulty;
4) because the pipe sleeve can hold the hoop tower column steel pipe at any angle, the arrangement requirement of the space cable surface is more easily met. The pipe sleeve hoop position and the cross-linking plane can be arranged on different tower column elevations, and the positions are staggered, so that cross-linking steel pipes and pipe sleeves are prevented from being welded in a staggered mode, and the component arrangement is more flexible;
5) the pipe sleeve is convenient to disassemble, and parts can be conveniently maintained and replaced in the future.
Drawings
Fig. 1 is a schematic structural view of a cable-stayed bridge of a conventional lattice type steel pipe bridge tower.
Fig. 2 is a schematic view of a connection structure of a stay cable and a transverse steel pipe of a cable-stayed bridge of a conventional lattice type steel pipe bridge tower.
Fig. 3 is a schematic view of the top view structure of the present invention.
Fig. 4 is a top cross-sectional comparison view of the present embodiment and a conventional triple-tube tower bridge, where (a) is the conventional triple-tube tower bridge, and (b) is the triple-tube tower bridge of the present embodiment.
FIG. 5 is a schematic view of the structure of example 2.
Fig. 6 is a schematic structural view of a cable-stayed bridge of the lattice-type steel pipe bridge tower of the present invention.
Reference numbers in the figures: the device comprises a pipe sleeve 1, lug plates 2, butt-joint blocks 3, fork lugs 4, a pin shaft 5, a tower column steel pipe 6, a cross-linked steel pipe 7 and a stay cable 8.
Detailed Description
Example 1
The utility model discloses in, based on the design of current conventional cable-stay bridge, design into the equilateral triangle that comprises three cylinder steel pipes with the bridge tower section, the bridge tower facade is the needle type. The tower column steel pipe 6 of the bridge tower is cylindrical, and the outer diameter is 1300 mm; the cross-linking steel pipe 7 is cylindrical, the outer diameter of the cross-linking steel pipe is 600mm (1200 mm is required to be selected for the outer diameter of the traditional cross-linking steel pipe 7), and the cross-linking steel pipe is connected to the tower column steel pipe 6 in a welding mode.
The stay cable connecting structure is a cylindrical pipe sleeve 1 which can be embedded and sleeved on a tower column steel pipe 6 of a cable tower (bridge tower), the pipe sleeve 1 is formed by butt joint of two detachable semi-cylindrical pipe sleeves and is formed by casting steel materials, and the inner diameter of the pipe sleeve 1 is matched with the outer diameter of the tower column steel pipe 6 and can be tightly sleeved outside the tower column steel pipe 6.
Two butt joint edges of two semicylinder pipe casings are equipped with the butt joint piece 3 that corresponds of each other respectively, butt joint piece 3 protrusion and in 1 surface of pipe casing, integrated casting shaping, be equipped with one row of a plurality of to wearing the screw, concrete quantity can be confirmed according to actual atress size, butt joint piece 3 of two semicylinder pipe casings is after two semicylinder pipe casing cladding tower column steel pipes 6, closely laminate, it is corresponding to wearing the screw position, the stock screw passes to wearing the screw, screw nut and screw up at stock screw tip, make the 3 fastening laminatings of butt joint piece of two semicylinder pipe casings, thereby make two semicylinder pipe casings lock tightly on tower column steel pipe 6.
Wherein, a convex ear plate 2 is arranged on the side wall of one semi-cylindrical pipe sleeve and is used as a stay cable connecting device, the ear plate 2 is a lug, a through hole is arranged on the lug, the length direction of the lug is arranged along the direction of a stay cable 8, and the lug and the semi-cylindrical pipe sleeve are integrally cast and molded;
one end of the stay cable 8 is connected with the main beam of the bridge body, and the other end is connected with the lug plate 2; a fork ear 4 (a fork ear ring) is fixedly arranged at the other end, namely a concave groove, and through holes with corresponding positions are respectively arranged on the two side walls of the concave groove;
the ear plate 2 can be inserted into the concave groove of the fork ear 4, the fork ear 4 is connected with the ear plate 2 by a pin shaft 5 penetrating through the through holes of the fork ear 4 and the ear plate 2, and then the end part of the pin shaft is screwed tightly by a nut, so as to connect the stay cable connecting device and the stay cable 8.
Example 2
The ear plates 2 are arranged in a V-shape, and the connecting end parts of the two V-shaped pieces and the pipe sleeve 1 are integrally molded and cast, so that two stay cables 8 can be connected to one pipe sleeve 1, as shown in fig. 5. The rest is the same as in example 1.
The utility model discloses an use can make the stay cable power directly transmit to the column, simplify the structural design of cable tower, reduce the degree of difficulty of cable tower construction, make arranging of space cable change the realization.
Claims (4)
1. A connection structure for a stay cable and a cable tower of a cable-stayed bridge, the cable-stayed bridge adopts a lattice type steel pipe cable tower, and a tower column of the cable tower consists of a plurality of steel pipes, and the connection structure is characterized in that the connection structure is a pipe sleeve which can be embedded in the tower column steel pipe of the cable tower, and the pipe sleeve can be tightly sleeved outside the tower column steel pipe and fixed; the side wall of the pipe sleeve is provided with a convex stay cable connecting device; one end of the stay cable is connected with the main beam of the bridge body, and the other end of the stay cable is connected with the stay cable connecting device.
2. The cable-stayed bridge cable-tower connection structure as claimed in claim 1, wherein the pipe housing is divided into two semi-cylindrical pipe housings which are detachable, and the stay cable connection means is provided on one of the semi-cylindrical pipe housings; two butt joint edges of the two semi-cylindrical pipe sleeves are respectively provided with butt joint blocks corresponding to each other, the butt joint blocks protrude out of the outer surfaces of the pipe sleeves and are provided with butt-penetrating screw holes; the butt joint blocks of the two semi-cylindrical pipe sleeves can be tightly attached after the two semi-cylindrical pipe sleeves cover the tower column steel pipe, the positions of the through screw holes are overlapped, the long rod screw penetrates through the through screw holes, and the nut is screwed on the end part of the long rod screw for fastening.
3. The cable-stayed bridge cable-and-tower connection structure as claimed in claim 2, wherein the stay cable connection means is an ear plate; the cable end of the stay cable is provided with a fork ear; the ear plate and the fork lug are provided with corresponding through holes, the ear plate is inserted into the fork lug, the fork lug and the ear plate are connected by penetrating through the through holes of the ear plate and the fork lug through a pin shaft, and the end part of the pin shaft is screwed tightly through a nut so as to connect the stay cable connecting device and the stay cable.
4. The cable-stayed bridge cable-and-tower connection according to claim 3, wherein the lug plate (2) is a single piece or a double piece arranged in a V-shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920542360.2U CN210031505U (en) | 2019-04-21 | 2019-04-21 | Connecting structure of stay cable and cable tower for cable-stayed bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920542360.2U CN210031505U (en) | 2019-04-21 | 2019-04-21 | Connecting structure of stay cable and cable tower for cable-stayed bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210031505U true CN210031505U (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920542360.2U Active CN210031505U (en) | 2019-04-21 | 2019-04-21 | Connecting structure of stay cable and cable tower for cable-stayed bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210031505U (en) |
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2019
- 2019-04-21 CN CN201920542360.2U patent/CN210031505U/en active Active
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