Exposure type simple steel pull beam cable-stayed bridge cable tower anchoring structure

Abstract

The application discloses an exposed simple steel pull beam cable-stayed bridge cable tower anchoring structure, which comprises a bridge tower, an anchoring beam is arranged at the outer wall of the bridge tower, the anchoring beam comprises a fixed anchoring beam and a movable anchoring beam, the fixed anchoring beam and the movable anchoring beam are arranged in a steel cross beam connecting the two into a whole, and the steel cross beam bears the horizontal component force between the fixed anchoring beam and the movable anchoring beam. The anchoring beam of the application decomposes the cable force of the cable into vertical force and horizontal force, the vertical force is borne by the concrete of the bridge tower, the horizontal force is borne by the steel cross beam, the anchoring end is arranged outside the bridge tower, the overall width of the cable tower anchoring structure can be reduced, thereby the amount of steel material is reduced, the anchoring beam adopts a structure system with one end fixed and the other end movable, the horizontal force borne by the bridge tower can be reduced, and the risk of concrete cracking of the bridge tower is lowered. The anchoring structure of the simple steel pull beam adopted by the application is light in weight, convenient to install, good in economy and convenient to construct.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of bridge design, and particularly relates to an exposed simple steel pull beam cable-stayed bridge pylon anchoring structure. BACKGROUND

[0002] Steel anchor boxes and steel anchor beams are widely used in the connection of pylon towers of long-span cable-stayed bridges, and have the characteristics of large rigidity and reliable force transmission. With the gradual application in highway and railway bridges, the traditional steel anchor box and steel anchor beam are composed of corbels, anchor beams and steel cross beams. In order to reduce the horizontal force borne by the bridge tower, according to the rigidity distribution principle, the steel cross beam often needs to be large in size, and the amount of steel is large. The overall hoisting weight and the welding and processing work of the components are large, which seriously affects the economy and construction convenience of the bridge tower. SUMMARY

[0003] The application is proposed to solve the problems in the prior art, and aims to provide an exposed simple steel pull beam cable-stayed bridge pylon anchoring structure.

[0004] The technical scheme of the application is as follows: an exposed simple steel pull beam cable-stayed bridge pylon anchoring structure, comprising a bridge tower, an anchor beam is arranged at the outer wall of the bridge tower, the anchor beam comprises a fixed anchor beam and a movable anchor beam, the fixed anchor beam and the movable anchor beam are arranged in a steel cross beam connecting the two into a whole, and the steel cross beam bears the horizontal component force between the fixed anchor beam and the movable anchor beam.

[0005] Further, the steel cross beam comprises a web plate and a transverse plate, the web plate is two pieces, and the two pieces of web plate simultaneously serve as the web plates of the anchor beams.

[0006] Further, the transverse plate is arranged between the two pieces of web plate, and the two pieces of web plate and the plurality of transverse plates enclose a steel grid chamber.

[0007] Further, the fixed anchor beam is connected to the concrete of the bridge tower through shear pins, so as to fix the fixed anchor beam to the outer wall of the bridge tower.

[0008] Further, a guide steel plate is arranged at the position corresponding to the movable anchor beam at the outer wall of the bridge tower, the guide steel plate encloses a guide installation cavity, and the movable anchor beam is arranged in the guide installation cavity.

[0009] Further, the guide steel plate is four pieces, and the guide steel plate is connected to the concrete of the bridge tower through shear pins.

[0010] Further, the anchor beam comprises a top plate at the top, a bottom plate at the bottom, and a side plate enclosing a four-sided side wall.

[0011] Further, the movable anchoring beam further comprises a polytetrafluoroethylene layer arranged at the outer wall of the top plate, the bottom plate and the side plate, and a stainless steel plate layer is arranged at the outer wall of the polytetrafluoroethylene layer, and the stainless steel plate layer is in contact with the guide steel plate.

[0012] Further, the end of the web plate is provided with an end plate, and the end plate is provided with an anchoring structure of the cable-stayed cable.

[0013] The anchoring beam of the present application decomposes the cable-stayed cable force into vertical force and horizontal force, the vertical force is borne by the bridge tower concrete, and the horizontal force is borne by the steel cross beam, the overall width of the cable-stayed bridge anchoring structure can be reduced by arranging the anchoring end outside the bridge tower, thereby reducing the amount of steel material, the anchoring beam adopts a structure system of one end fixed and one end movable, the horizontal force borne by the bridge tower can be reduced, and the risk of cracking of the bridge tower concrete is reduced. The present application adopts a simple steel pull beam anchoring structure, which is light in weight, convenient to install, and has good economy and construction convenience. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a perspective view of the present application;

[0015] Figure 2 is a front view of the present application;

[0016] Figure 3 is a top view of the present application;

[0017] Figure 4 is an enlarged view of the installation of the pressure plate in the present application;

[0018] Figure 5 is an installation schematic view of the splicing plate in the present application;

[0019] Among them:

[0020] 100 outer beam 101 anchor pad

[0021] 102 pressure plate 103 supporting plate

[0022] 104 end plate 200 anchoring beam

[0023] 201 top plate 202 bottom plate

[0024] 203 side plate 204 stiffening rib

[0025] 205 stainless steel plate layer 206 polytetrafluoroethylene layer

[0026] 300 steel cross beam 301 web plate

[0027] 302 transverse web plate 400 splicing plate. DETAILED DESCRIPTION

[0028] The present invention will now be described in detail with reference to the accompanying drawings and embodiments:

[0029] like Figures 1-5 As shown, an exposed simple steel-stayed bridge tower anchorage structure includes a bridge tower. An anchorage beam 200 is provided on the outer wall of the bridge tower. The anchorage beam 200 includes a fixed anchorage beam and a movable anchorage beam. Both the fixed anchorage beam and the movable anchorage beam are set in a steel crossbeam 300 that connects the two into a whole. The steel crossbeam 300 bears the horizontal component of the force between the fixed anchorage beam and the movable anchorage beam.

[0030] The steel beam 300 includes a web 301 and a diaphragm 302. The web 301 consists of two pieces, which together serve as the web of the anchor beam 200.

[0031] The diaphragm 302 is disposed between two web plates 301, and the two web plates 301 and the multiple diaphragms 302 form a steel grating.

[0032] The fixed anchor beam is connected to the bridge tower concrete by shear studs, thereby fixing the fixed anchor beam to the outer wall of the bridge tower.

[0033] A guide steel plate is installed on the outer wall of the bridge tower corresponding to the position of the movable anchor beam. The guide steel plate encloses and forms a guide installation cavity, and the movable anchor beam is installed inside the guide installation cavity.

[0034] The guide steel plates consist of four pieces, which are connected to the bridge tower concrete by shear studs.

[0035] The anchoring beam 200 includes a top plate 201 at the top, a bottom plate 202 at the bottom, and a side plate 203.

[0036] The movable anchor beam also includes a polytetrafluoroethylene layer 206 disposed on the outer wall of the top plate 201, bottom plate 202, and side plate 203. A stainless steel plate layer 205 is disposed on the outer wall of the polytetrafluoroethylene layer 206, and the stainless steel plate layer 205 is in contact with the guide steel plate.

[0037] An end plate 104 is provided at the end of the web 301, and an anchoring structure for the stay cable is provided on the end plate 104.

[0038] Preferably, the anchoring beam 200 is provided with stiffening ribs 204 to reinforce it.

[0039] The anchoring structure of the stay cable includes a support plate 103 set on the end plate 104, a pressure plate 102 set on the support plate 103, and an anchor plate 101 set on one side of the pressure plate 102, through which the stay cable passes.

[0040] The cable force of the cable is transmitted to the end plate 104 through the anchor pad 101, the pressure plate 102 and the supporting plate 103, further, the anchoring beam 200 is connected with the bridge tower concrete through shear nails, the cable force of the cable is converted into vertical component force and horizontal component force through the anchoring beam 200, and the anchoring beam 100 transmits the vertical component force and the horizontal component force to the tower wall of the bridge tower and the steel cross beam 300 respectively.

[0041] The outrigger beam 100 comprises a cable anchoring end device, the overall width of the cable tower anchoring structure can be reduced by arranging the anchoring device outside the bridge tower and arranging the cable tensioning end on the beam, the outrigger beam 100 is a main force bearing member, the outrigger beam 100 is a simple cable tower anchoring structure, and the construction is facilitated.

[0042] The main force bearing member of the cable tower anchoring structure is the web plate 301, the structure is simple, easy to assemble, the steel consumption is small, the weight is light, the integral hoisting is applicable, the stress is clear and reasonable, and the economic efficiency and the construction convenience are good.

[0043] The bridge tower and the movable anchoring beam are movably connected, and the spacing between the movable anchoring beam and the fixed anchoring beam is not limited. By arranging the movable end, the horizontal force borne by the bridge tower can be reduced, and the cable force of the cable is borne by the outrigger beam, so that the risk of cracking of the bridge tower concrete is reduced.

[0044] The fixed surface between the fixed anchoring beam and the bridge tower concrete is four.

[0045] Another embodiment

[0046] A simple steel outrigger beam cable-stayed bridge cable tower anchoring structure, comprising a bridge tower, an anchoring beam 200 is arranged at the outer wall of the bridge tower, the anchoring beam 200 comprises a fixed anchoring beam and a movable anchoring beam, the fixed anchoring beam and the movable anchoring beam are arranged in a steel cross beam 300 connecting the two into a whole, and the steel cross beam 300 bears the horizontal component force between the fixed anchoring beam and the movable anchoring beam.

[0047] The steel cross beam 300 comprises a web plate 301 and a cross partition plate 302, the web plate 301 is two pieces, and the two pieces of web plate 301 simultaneously serve as the web plates of the anchoring beam 200.

[0048] The cross partition plate 302 is arranged between the two pieces of web plate 301, and the two pieces of web plate 301 and the plurality of cross partition plates 302 enclose a steel grid chamber.

[0049] The fixed anchoring beam is connected with the bridge tower concrete through shear nails, so that the fixed anchoring beam is fixed to the outer wall of the bridge tower.

[0050] The guide steel plates are arranged at the outer wall of the bridge tower and form a guide installation cavity.

[0051] The guide steel plates are four, and the guide steel plates are connected with the bridge tower concrete through shear pins.

[0052] The anchoring beam 200 comprises a top plate 201 at the top, a bottom plate 202 at the bottom, and a side plate 203.

[0053] The anchoring beam further comprises a polytetrafluoroethylene layer 206 arranged at the outer wall of the top plate 201, the bottom plate 202, and the side plate 203, and a stainless steel plate layer 205 arranged at the outer wall of the polytetrafluoroethylene layer 206, which is in contact with the guide steel plate.

[0054] The end plate 104 is provided at the end of the web plate 301, and the anchoring structure of the cable-stayed cable is arranged on the end plate 104.

[0055] Preferably, the anchoring beam 200 is provided with a stiffening rib 204 for reinforcement.

[0056] The fixing structure of the cable-stayed cable comprises a supporting plate 103 arranged on the end plate 104, a pressure bearing plate 102 arranged on the supporting plate 103, and an anchor pad 101 arranged on one side of the pressure bearing plate 102, through which the cable-stayed cable passes.

[0057] The cable force of the cable-stayed cable is transmitted to the end plate 104 through the anchor pad 101, the pressure bearing plate 102, and the supporting plate 103. Further, the anchoring beam 200 is connected with the bridge tower concrete through shear pins, the cable force of the cable-stayed cable is converted into vertical and horizontal components by the anchoring beam 200, and the anchoring beam 100 transmits the vertical and horizontal components to the tower wall and the steel cross beam 300, respectively.

[0058] The outrigger beam 100 comprises a cable-stayed cable anchoring end device, and the cable-stayed cable tensioning end is arranged on the beam by arranging the anchoring device outside the bridge tower, so as to reduce the overall width of the cable tower anchoring structure. The outrigger beam 100 is the main force bearing member, and the outrigger beam 100 is a simple cable tower anchoring structure, which is convenient for construction.

[0059] The main force bearing member of the cable tower anchoring structure is the web plate 301, which has simple structure, easy assembly, small amount of steel, light weight, is suitable for integral hoisting, clear and reasonable stress, and good economy and construction convenience.

[0060] The bridge tower and the movable anchoring beam are movably connected, and the spacing between the movable anchoring beam and the fixed anchoring beam is not limited. By arranging the movable end, the horizontal force borne by the bridge tower can be reduced, the cable force of the stay cable is borne by the outrigger beam, and the risk of concrete cracking of the bridge tower is reduced.

[0061] When the steel cross beam 300 is heavy and large in size, the structure of the two spliced together can be used.

[0062] Correspondingly, the web plate 301 is changed from two in the previous embodiment to four, and the two web plates 301 are spliced together, the splice plate 400 is arranged at the side wall of the web plate 301, and the two web plates 301 are connected into a whole by the splice plate 400.

[0063] Further, the free end of the web plate 301 is provided with the transverse partition plate 302, and the transverse partition plates 302 on the two sides are fixed in abutment, thereby playing a role in reinforcing the left and right steel cross beams 300.

[0064] The fixing mode between the splice plate 400 and the web plate 301 can be, but is not limited to, bolt and nut fixing.

[0065] The anchoring beam of the present application decomposes the cable force of the stay cable into vertical force and horizontal force, the vertical force is borne by the bridge tower concrete, the horizontal force is borne by the steel cross beam, by arranging the anchoring end of the cable-stayed bridge outside the bridge tower, the overall width of the tower anchoring structure can be reduced, thereby reducing the amount of steel material, the anchoring beam adopts the structure system of one end fixed and one end movable, the horizontal force borne by the bridge tower can be reduced, and the risk of concrete cracking of the bridge tower is reduced. The simple steel pull beam anchoring structure is adopted, the weight is relatively light, the installation is convenient, and the economic efficiency and the construction convenience are good.

Claims

1. An exposed, simple steel tie-beam cable-stayed bridge tower anchorage structure, characterized in that: An anchor beam (200) is provided on the outer wall of the bridge tower. The anchor beam (200) includes a fixed anchor beam and a movable anchor beam. Both the fixed anchor beam and the movable anchor beam are set in a steel crossbeam (300) that connects the two into a whole. The steel crossbeam (300) bears the horizontal component of the force between the fixed anchor beam and the movable anchor beam. The steel beam (300) includes a web (301) and a diaphragm (302). The web (301) consists of two pieces, which simultaneously serve as the web of the anchor beam (200). The diaphragm (302) is disposed between two web plates (301), and the two web plates (301) and the multiple diaphragms (302) form a steel grating. A guide steel plate is installed on the outer wall of the bridge tower corresponding to the position of the movable anchor beam. The guide steel plate encloses and forms a guide installation cavity, and the movable anchor beam is installed inside the guide installation cavity. The guide steel plates consist of four pieces, and the guide steel plates are connected to the bridge tower concrete by shear studs; The anchoring beam (200) includes a top plate (201) at the top, a bottom plate (202) at the bottom, and a side plate (203). The end of the web (301) is provided with an end plate (104), and the end plate (104) is provided with an anchoring structure for the cable. The anchoring structure of the stay cable includes a support plate (103) provided on the end plate (104), a pressure plate (102) provided on the support plate (103), and an anchor plate (101) provided on one side of the pressure plate (102), through which the stay cable passes; The cable force of the stay cable is transmitted to the end plate (104) through the anchor plate (101), the bearing plate (102), and the support plate (103). The anchor beam (200) is connected to the bridge tower concrete through shear studs. The cable force of the stay cable is converted into vertical and horizontal components through the anchor beam (200). The anchor beam (200) transmits the vertical and horizontal components to the bridge tower wall and the steel crossbeam (300) respectively.

2. The exposed simple steel tie beam cable-stayed bridge tower anchorage structure according to claim 1, characterized in that: The fixed anchor beam is connected to the bridge tower concrete by shear studs, thereby fixing the fixed anchor beam to the outer wall of the bridge tower.

3. The exposed simple steel tie beam cable-stayed bridge tower anchorage structure according to claim 1, characterized in that: The movable anchor beam also includes a polytetrafluoroethylene layer (206) disposed on the outer wall of the top plate (201), bottom plate (202), and side plate (203), and a stainless steel plate layer (205) disposed on the outer wall of the polytetrafluoroethylene layer (206), and the stainless steel plate layer (205) is in contact with the guide steel plate.

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