CN212925814U - Suspended casting beam cable construction structure of n-shaped beam bridge - Google Patents
Suspended casting beam cable construction structure of n-shaped beam bridge Download PDFInfo
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- CN212925814U CN212925814U CN202021083135.6U CN202021083135U CN212925814U CN 212925814 U CN212925814 U CN 212925814U CN 202021083135 U CN202021083135 U CN 202021083135U CN 212925814 U CN212925814 U CN 212925814U
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Abstract
The utility model discloses a suspended casting beam cable construction structure of an n-shaped beam bridge, wherein an electric hoist is arranged on a shaped temporary support to hoist a cable pipeline; the entrance end of the inclined lower end of the cableway pipe is connected with an anchor backing plate, the inclined lower end of the transition pipe in the cableway pipe penetrates through the anchor backing plate and is connected with a tensioning end anchorage device, the exit end of the cableway pipe is sequentially coaxially connected with a steel taper pipe and an HDPE (high-density polyethylene) stay cable sleeve pipe, the inclined upper end of the HDPE stay cable sleeve pipe extends to a tower column of a cable-stayed bridge, a plurality of extension pipes are arranged in the anchor ring in the transition pipe, the lower end of a stay cable belt PE (polyethylene) steel strand in each extension pipe is anchored in the tensioning end anchorage device, and the upper end of; the tower column of the cable-stayed bridge is provided with an upper connecting steel sleeve and a lining pipe, and a tower column fixing ring is connected with a double-semicircle clamp of the HDPE stay cable sleeve through a steel wire rope. The utility model discloses make HDPE suspension cable sleeve pipe welding process fast, the cable installation effectiveness is high on the pylon.
Description
Technical Field
The utility model relates to a pi type beam bridge hangs and waters beam cable construction field, specifically is a pi type beam bridge hangs and waters beam cable construction structures.
Background
In the construction process of the cable-stayed bridge, because the construction elevation of the beam body and the control of the internal force seriously affect the driving speed and safety of vehicles in the later period, the linear shape and the control of the internal force of the bridge are mutually restricted, which becomes a difficult point for preventing the rapid transportation of traffic. The bridge linear control is not only an important component of the bridge construction technology, but also a key for ensuring the macroscopic construction and quality control of the bridge and the safety guarantee of the bridge construction.
The structure of large-span cable-stayed bridge is complicated, and in the construction process, the following problems often exist: (1) the HDPE sleeve has low on-site welding processing efficiency and loose splicing seam; (2) because the weight of the cable duct pipe and the stay cable is large, the angle adjustment is difficult in the installation process of the beam surface; (3) the construction platform of the stay cable on the tower column is not firmly fixed, and the stay cable and the upper cable saddle are difficult to install.
In view of this, in order to improve on-site HDPE sleeve pipe welding machining efficiency and quality, make things convenient for cable way pipe, suspension cable angular adjustment, reinforcing tower column construction platform's fastness and security, the utility model relates to a simple effectual II type beam bridge hangs and waters beam cable auxiliary structure and construction method urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a pi type beam bridge hangs and waters beam cable construction structures to improve on-the-spot HDPE sleeve pipe welding machining efficiency and quality, make things convenient for cable way pipe, stay cable angular adjustment, reinforcing pylon construction platform's fastness and security
In order to achieve the above purpose, the utility model discloses the technical scheme who adopts is:
II type beam bridge hangs and waters beam cable construction structures, its characterized in that: setting a shaped temporary support in the installation process of the cableway pipe, wherein the shaped temporary support is vertically fixed on a middle bin steel bar of the cable-stayed bridge, and an electric hoist is arranged on the shaped temporary support to obliquely lift the cableway pipe; the inclined lower end of the cableway pipe is pre-embedded into a concrete girder of a cable-stayed bridge, the inclined lower end of the cableway pipe is an inlet, the inlet end of the cableway pipe is connected with an anchor backing plate, the anchor backing plate is fixedly connected with a steel bar inside the concrete girder, a transition pipe is coaxially arranged at a position close to the inlet inside the cableway pipe, a plurality of limiting ends are arranged between the cableway pipe and the transition pipe to limit the transition pipe, the range inside the transition pipe is used as an anchorage transition area, the inclined lower end of the transition pipe penetrates out of the anchor backing plate and is coaxially and fixedly connected with a tensioning end anchorage, an anchor ring is coaxially arranged inside the transition pipe, an O-shaped sealing ring is arranged between the transition pipe and the anchor ring, a plurality of extension pipe holes which are parallel to the axial direction of the anchor ring and penetrate through the anchor ring are arranged in the anchor ring, extension pipes coaxially penetrate through the extension pipes respectively in the extension pipe holes, the inclined lower ends of the extension pipes respectively penetrate into, high-strength cement is filled in the space between the transition pipe and the extension pipe;
the inclined upper end of each cableway pipe is an outlet, a shock absorber is coaxially arranged in the cableway pipe close to the outlet, the outlet end of a cableway port is coaxially connected with a steel taper pipe, the steel taper pipe is connected with the outlet end of the cableway pipe through the radially larger end of the steel taper pipe, the radially smaller end of the steel taper pipe is coaxially connected with an HDPE (high-density polyethylene) stay cable sleeve, the inclined upper end of the HDPE stay cable sleeve extends to a tower column of the cable-stayed bridge, a stay cable belt PE steel strand is coaxially arranged in each extension pipe, the inclined lower end of each stay cable belt PE steel strand penetrates into a tensioning end anchorage device respectively, the inclined lower end of each stay cable belt PE steel strand is anchored in the tensioning end anchorage device through a clamping piece, and the inclined upper end of each stay cable belt PE steel strand penetrates through the steel taper pipe and extends to the tower column of the cable-stayed bridge along the HDPE stay cable;
the pre-buried bushing pipe that has the slope in the pylon of cable-stay bridge, the slope lower extreme of bushing pipe extend to the pylon surface and be connected with pre-buried steel sheet, and pre-buried steel sheet is fixed in the pylon surface, and pre-buried steel sheet is outwards connected with and connects the steel sleeve on coaxial with the bushing pipe, the slope upper end of HDPE suspension cable sheathed tube stretches to connect the steel sleeve on, and the coaxial cover in slope upper end of HDPE suspension cable sheathed tube is equipped with thermal energy HDPE pipe, and thermal energy HDPE pipe external coaxial hoop cover has two semicircle clamps, and the pylon surface lies in and connects steel sleeve top position fixed with solid fixed ring, gu fixed ring passes through wire rope and the connection of two semicircle clamps with interim lock solid fixed HDPE suspension cable.
II type beam bridge hang and water beam cable construction structures, its characterized in that: the inclined lower end of the tensioning end anchorage device is coaxially connected with a protective cover through a steel nail, the inclined lower end of each cable-stayed belt PE steel strand penetrates through the tensioning end anchorage device and penetrates into the protective cover, the part of each cable-stayed belt PE steel strand, which is inclined in the tensioning end anchorage device, is anchored through a clamping piece, and the protective cover is filled with anti-corrosive grease.
II type beam bridge hang and water beam cable construction structures, its characterized in that: the outer wall of the tensioning end anchorage device is formed with external threads, a tensioning adjusting nut is screwed on the tensioning end anchorage device, and the tensioning end anchorage device is locked on the anchor backing plate by the tensioning adjusting nut.
II type beam bridge hang and water beam cable construction structures, its characterized in that: the liner tube in the tower column of the cable-stayed bridge consists of an inner liner tube and an outer liner tube coaxially sleeved outside the inner liner tube.
II type beam bridge hang and water beam cable construction structures, its characterized in that: the position of being located pre-buried steel sheet below on the column has construction platform through the steel wire ligature, the position of column outer wall is located the construction platform below encircles has the staple bolt steel sheet, the both ends of staple bolt steel sheet are connected with enhancement fore shaft board respectively, strengthen and connect through the fastening bolt that excels in between the fore shaft board, the construction platform bottom is arranged in on the enhancement fore shaft board that the staple bolt steel sheet is connected, the construction platform bottom still is fixed with the bottom girder steel, the column surface is located the pre-buried built-in fitting that is fixed with in staple bolt steel sheet below, the bottom girder steel, be connected with the angle steel of double pin between the built-in fitting.
The utility model has the following characteristics and beneficial effect:
(1) the utility model discloses high density polyethylene outer tube (HDPE) adopts regularization bed-jig rapid welding construction, and is outer
The sleeve welding speed is high, and the welding quality is good.
(2) The utility model discloses an installation of auxiliary stay cable bundle of regularization interim support frame, cable way pipe, angle adjustment is convenient when stay cable bundle, cable way pipe crane installation, and the efficiency of construction is high.
(3) The utility model discloses a staple bolt steel sheet cooperation double pin angle steel, steel wire auxiliary stay pylon construction platform, construction platform is fixed firm, and stay cable simple to operate is swift on the pylon.
Drawings
FIG. 1 is a schematic view of a shaped jig welded HDPE pipe;
FIG. 2 is a plan view of the tension end anchor ring;
FIG. 3 is a schematic view of the extension pipe and anchor ring assembly;
FIG. 4 is a schematic view of a shaped temporary support frame for hoisting a cableway pipe;
FIG. 5 is a view of the anchoring of the ends of the stay cables of the concrete main beams;
FIG. 6 is a structural diagram of an HDPE pipe installed in a tower column construction platform in an auxiliary manner;
FIG. 7 is a sectional view of the hoop steel plate and the tower shown in FIG. 6;
wherein: 1-stayed cable with PE steel strand; 2-HDPE stayed cable sleeve; 3-a steel conical pipe; 4-a shock absorber; 5-a cable duct; 6-concrete girder; 7-an extension tube; 8-a transition pipe; 9-high strength cement; 10-a limiting end; 11-anchor backing plate; 12-tensioning the adjusting nut; 13-a clip; 14-anti-corrosive grease; 15-tensioning end anchorage; 16-a protective cover; 17-steel nails; 18-a column; 19-an outer liner tube; 20-pre-burying a steel plate; 21-middle bin reinforcing steel bars; 22-lining tube; 23-extended tube holes; 24-an anchor ring; 25-a fixing frame; 26-HDPE pipe; 27-a pipe welding machine; 28-a push wheel; 29-heating plate; 30-a weld; 31-thermally expanded HDPE pipe; 32-double semicircular hoops; 33-connecting a steel sleeve; 34-a steel wire rope; 35-a fixed ring; 36-high strength bolts; 37-steel wire; 38-anchor ear steel plate; 39-construction platform; 40-bottom cross beam; 41-double angle steel; 42-high strength locking bolt; 43-reinforced locking plate; 44-embedded parts; 45-electric hoist; 46-a steel collar; 47-finalized temporary support.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
II type beam bridge hangs and waters beam cable construction structures includes:
as shown in fig. 4, includes a shaped temporary support 47 provided during installation of the cableway pipe. The standardized temporary support 47 is vertically fixed on the middle bin steel bars 21 of the cable-stayed bridge, and the standardized temporary support 47 is provided with an electric hoist 45 for obliquely hoisting the cable duct 5.
As shown in fig. 2, 3 and 5, the inclined lower end of the cableway pipe 5 is pre-embedded into the concrete main beam 6 of the cable-stayed bridge, the inclined lower end of the cableway pipe 5 is an inlet, the inlet end of the cableway pipe 5 is connected with an anchor backing plate 11, the anchor backing plate 11 is fixedly connected with the steel bars inside the concrete main beam 6, a transition pipe 8 is coaxially installed inside the cableway pipe 5 close to the inlet, the range inside the transition pipe 8 is used as an anchor transition area, the inclined lower end of the transition pipe 8 penetrates through the anchor backing plate 11 and is coaxially and fixedly connected with a tensioning end anchor 15, an anchor ring 24 is coaxially installed inside the transition pipe 8, a plurality of extension pipe holes 23 which are parallel to the axial direction of the anchor ring 24 and penetrate through the anchor ring 24 are arranged in the anchor ring 24, an extension pipe 7 coaxially penetrates through each extension pipe hole 23, the inclined lower end of the extension pipe 7 respectively penetrates into the tensioning end anchor 15, the inclined upper end of each extension pipe 7 penetrates through the inclined upper end of the, high-strength cement 9 is filled in the space between the transition pipe 8 and the extension pipe 7;
the inclined upper end of the cable duct pipe 5 is an outlet, the outlet end of the cable duct port 5 is coaxially connected with a steel taper pipe 3, the steel taper pipe 3 is connected with the outlet end of the cable duct pipe 5 through the radially larger end of the steel taper pipe 3, the radially smaller end of the steel taper pipe 3 is coaxially connected with an HDPE (high-density polyethylene) stay cable sleeve 2, the inclined upper end of the HDPE stay cable sleeve 2 extends to a tower column 18 of the cable-stayed bridge, a stay cable belt PE steel strand 1 is coaxially arranged in each extension pipe respectively, the inclined lower end of each stay cable belt PE steel strand 1 penetrates into a tension end anchorage device 15 respectively, the inclined lower end of each stay cable belt PE steel strand 1 is anchored in the tension end anchorage device 15 through a clamping piece 13, and the inclined upper end of each stay cable belt PE steel strand 1 penetrates through the steel taper pipe 3 and extends to the tower column 18 of the cable-stayed bridge along the inside of the HDPE stay cable sleeve 2;
as shown in fig. 6 and 7, an inclined liner tube is pre-embedded in a tower column 18 of a cable-stayed bridge, the inclined lower end of the liner tube extends to the surface of the tower column 18 and is connected with a pre-embedded steel plate 20, the pre-embedded steel plate 20 is fixed on the surface of the tower column 18 through a high-strength bolt 36, the pre-embedded steel plate 20 is externally connected with an upper connecting steel sleeve 33 coaxial with the liner tube, a construction platform is connected to the position of the tower column 18 below the upper connecting steel sleeve 33, the inclined upper end of an HDPE stayed cable sleeve 2 extends to the upper connecting steel sleeve 33, a space for connecting and installing the inclined upper end of the HDPE stayed cable sleeve 2 is provided inside the upper connecting steel sleeve 33, a space for connecting and fixing the inclined upper end of a stayed cable belt PE stranded wire 1 passing through the pre-embedded steel plate 20 is provided inside the liner tube, a thermally expanded HDPE pipe 31 is coaxially sleeved on the inclined upper end of the HDPE stayed cable sleeve 2, a double semi-circle 32 is coaxially sleeved outside the thermally expanded HDPE pipe 31, the fixing ring 35 is connected with the double semicircular clips 32 through the steel wire rope 34 to temporarily lock the HDPE stay cable sleeve 2.
As shown in fig. 5, a plurality of electric hoists 45 are suspended on the top of the standardized temporary support 47, the steel wire rope 34 of each electric hoist 45 is connected with a steel collar 46, the steel collar 46 is sleeved on the cable duct 5, and the cable duct 5 is obliquely lifted by the electric hoists 45.
As shown in fig. 1, the HDPE stayed cable sleeve 2 is formed by welding a plurality of HDPE pipes 26 end to end, every two adjacent HDPE pipes 26 are respectively arranged on a fixed frame 25 and a pushing wheel 28 on a pipe welding machine 27, the butt joint of the two adjacent HDPE pipes 26 is supported by a reinforcing plate 29, and a welding seam 30 is formed at the butt joint of the two adjacent HDPE pipes 26 after welding.
The utility model discloses in, set up O type sealing washer between transition pipe 8 and the anchor ring 24, set up the spacing end 10 of multichannel in order to carry on spacingly to transition pipe 8 between cableway pipe 5 and the transition pipe 8.
The utility model discloses in, the slope lower extreme of stretch-draw end ground tackle 15 has protective cover 16 through 17 coaxial coupling of steel nail, and each slope lower extreme of drawing cable area PE steel strand wires 1 to one side passes stretch-draw end ground tackle 15 respectively and penetrates protective cover 16 in, and every slope of drawing cable area PE steel strand wires 1 to one side is located the part of drawing end ground tackle 15 and passes through clamping piece 13 anchor, and the protective cover 16 intussuseption is filled with anticorrosive grease 14.
The utility model discloses in, the shaping of the 15 outer walls of stretch-draw end ground tackle has the external screw thread, and stretch-draw end ground tackle 15 spiral shell closes and is equipped with stretch-draw adjusting nut 12, will stretch-draw end ground tackle 15 lock solid in anchor backing plate 11 by stretch-draw adjusting nut 12.
The utility model discloses in, 5 inside exit position coaxial arrangements that are close to of cableway pipe have bumper shock absorber 4.
In the utility model, the liner tube in the tower column 18 of the cable-stayed bridge is composed of an inner liner tube 22 and an outer liner tube 19 coaxially sleeved outside the inner liner tube 22,
the utility model discloses in, construction platform 39 passes through the steel wire 37 ligature on the column 18, 18 outer walls of column are located construction platform 39 below position and encircle hold staple bolt steel sheet 38, staple bolt steel sheet 38's both ends are connected with respectively and strengthen fore shaft board 43, strengthen connecting through high strength fastening bolt 42 between the fore shaft board 43, construction platform 39 bottom is arranged in on the enhancement fore shaft board 43 that staple bolt steel sheet 38 connects, construction platform 39 bottom still is fixed with bottom girder steel 40, 18 surfaces of column are located the pre-buried built-in fitting 44 that is fixed with in staple bolt steel sheet 38 below, bottom girder steel 40, be connected with doublet angle steel 41 between the built-in fitting 44 and carry out the enhancement support.
A construction method for cantilever casting of a beam cable of an n-shaped beam bridge comprises the following steps:
(1) and construction preparation: preparing a storage and assembly site, stacking a stay cable belt PE steel strand 1, an HDPE stay cable sleeve 2, a cableway pipe 5 and a tensioning end anchorage device 15, prefabricating a shaped temporary support frame 47, an anchor ear steel plate 38 and a construction platform 39 in advance, and taking measures for preventing materials from being damaged, plastic components from being deformed by heating and iron components from being wetted and rusted;
(2) and prefabricating an anchorage device: cutting the extension pipe 7 according to the length of the extension pipe 7 required by each anchorage device transition area, installing the extension pipe 7 on an anchor ring 24, calibrating an extension pipe bundle, plugging a steel pipe or a hard plastic pipe into the extension pipe 7 to ensure verticality, selecting a correct transition pipe 8 according to the type of the anchor ring, covering the extension pipe 7 with the transition pipe 8, ensuring that an O-shaped sealing ring is correctly installed between the transition pipe 8 and the anchor ring 24, manufacturing high-strength cement 9, and grouting between the extension pipe 7 and the transition pipe 8;
(3) welding the HDPE outer sleeve: calculating the length of an HDPE pipe 26 required by each cable, welding the HDPE pipe 26 by using a pipe welding machine 27 in an assembly area to obtain an HDPE stay cable sleeve 2, and neatly placing the HDPE stay cable sleeve after welding;
(4) hoisting the cable channel pipe: when the bridge deck beam steel bars are bound, a middle bin channel is preset, the position of installation of the cable duct pipe 5 is reserved, a shaped temporary support frame 47 formed by welding angle steel in advance is hung to the middle bin, the shaped temporary support frame 47 is welded with the middle bin steel bars 21, an electric hoist 45 is installed on the shaped temporary support frame 47, a steel sleeve ring 46 is sleeved on the cable duct pipe 5, the cable duct pipe 5 is obliquely hung through the electric hoist 45, the angle of the cable duct pipe 5 is adjusted, and the cable duct pipe is placed in the position designed by the concrete main beam 6.
(5) And installing a tower column construction platform: the method comprises the steps of hoisting an anchor ear steel plate 38 prefabricated in advance, installing the anchor ear steel plate on a tower column 18 according to a designed position, hoisting a construction platform 39 after the position is verified, placing the construction platform 39 on a reinforcing locking opening plate 43 of the anchor ear steel plate 38, binding the upper part of the construction platform 39 with the tower column 18 through a steel wire 37, and connecting a bottom cross beam 40 with double-spliced angle steel 41 in a hinged mode and an embedded part 44 embedded in the surface of the tower column 18.
(6) Installing an upper connecting steel sleeve: after the tower column construction platform 39 is installed, the upper steel sleeve 33 is lifted, and is connected with the embedded steel plate 20 in the tower column 18 through the high-strength bolt 36;
(7) hoisting the HDPE outer sleeve: sleeving the end part of the welded HDPE stay cable sleeve 2 on a thermal expansion HDPE pipe 31, arranging a double-semicircle hoop 32 outside the thermal expansion HDPE pipe 31, drawing the HDPE stay cable sleeve 2 to the pipe orifice of a steel sleeve 33 on a tower column 18 by a tower crane, connecting the double-semicircle hoop 32 through a fixing ring 35 on the tower column 18, and temporarily locking the HDPE stay cable sleeve 2;
(8) and installing bridge deck anchorage devices: mounting a prefabricated anchorage device on a structure in the concrete main beam 6 according to the direction of an anchorage device hole site, connecting an anchor backing plate 11 and a steel bar in the concrete main beam 6 together, and dynamically adjusting the tightness of a tensioning adjusting nut 12 on the anchorage device;
(9) and threading: and when the strength of the current section of concrete girder 6 reaches more than 90% of the design value and the prestress tension of the section is finished, the stay cable is installed. A winch, a steel strand plate and an eccentric wheel are installed at two ends of a concrete main beam 6, the winch pulls a stay cable belt PE steel strand 1 to pass through an HDPE stay cable sleeve 2, a tower column 18 and a cable duct pipe 5 to a bridge floor at the other end, the stay cable belt PE steel strand 1 is installed in a tensioning end anchorage device 15, and a clamping piece 13 is installed for anchoring;
(10) tensioning: when the PE steel hinge wires 1 of the stay cable belts are installed, hydraulic jacks are adopted to stretch the PE steel hinge wires 1 of the stay cable belts one by one according to the designed cable force, and during stretching, the stretching force, the deformation of the concrete main beam 6 and the deformation of the tower column 18 are monitored at any time to prevent the specified deviation from being exceeded; repeating the operations until all the stay cable belts PE steel strand wires 1 are installed, and installing and connecting the HDPE stay cable sleeve 2 with the concrete main beam 6 and the cableway pipe 5 of the tower column 18;
(11) final assembly and protection: and after the final cable force is finished, jacking and pressing the clamping piece 13 at the anchoring end of the concrete girder 6, cutting off the redundant stay cable with the PE steel hinge wire 1 at the anchoring end, installing a protective cover 16, connecting the edge part of the protective cover 16 with an anchorage 15 at the tensioning end through a steel nail 17, and pressing and injecting anticorrosive grease 14 into the protective cover 16.
The embodiments of the present invention are only descriptions of the preferred embodiments of the present invention, not right the present invention is designed and limited, without departing from the design concept of the present invention, the technical personnel in the field should fall into the protection scope of the present invention for various modifications and improvements made by the technical solution of the present invention, and the technical contents of the present invention are all recorded in the claims.
Claims (5)
1. II type beam bridge hangs and waters beam cable construction structures, its characterized in that: setting a shaped temporary support in the installation process of the cableway pipe, wherein the shaped temporary support is vertically fixed on a middle bin steel bar of the cable-stayed bridge, and an electric hoist is arranged on the shaped temporary support to obliquely lift the cableway pipe;
obliquely hoisting a cableway pipe, wherein the oblique lower end of the cableway pipe is embedded into a concrete main beam of a cable-stayed bridge, the oblique lower end of the cableway pipe is an inlet, the inlet end of the cableway pipe is connected with an anchor backing plate, the anchor backing plate is fixedly connected with a steel bar in the concrete main beam, a transition pipe is coaxially arranged in the cableway pipe close to the inlet, a plurality of limiting ends are arranged between the cableway pipe and the transition pipe to limit the transition pipe, the range in the transition pipe is used as an anchorage device transition area, the oblique lower end of the transition pipe penetrates through the anchor backing plate and is coaxially and fixedly connected with a tensioning end anchorage device, an anchor ring is coaxially arranged in the transition pipe, an O-shaped sealing ring is arranged between the transition pipe and the anchor ring, a plurality of extension pipe holes which are parallel to the axial direction of the anchor ring and penetrate through the anchor ring are arranged in the anchor ring, an extension pipe hole coaxially penetrates through each, the inclined upper end of each extension pipe penetrates out of the inclined upper end of the transition pipe into the cableway pipe, and high-strength cement is filled in the space between the transition pipe and the extension pipe;
the inclined upper end of each cableway pipe is an outlet, a shock absorber is coaxially arranged in the cableway pipe close to the outlet, the outlet end of a cableway port is coaxially connected with a steel taper pipe, the steel taper pipe is connected with the outlet end of the cableway pipe through the radially larger end of the steel taper pipe, the radially smaller end of the steel taper pipe is coaxially connected with an HDPE (high-density polyethylene) stay cable sleeve, the inclined upper end of the HDPE stay cable sleeve extends to a tower column of the cable-stayed bridge, a stay cable belt PE steel strand is coaxially arranged in each extension pipe, the inclined lower end of each stay cable belt PE steel strand penetrates into a tensioning end anchorage device respectively, the inclined lower end of each stay cable belt PE steel strand is anchored in the tensioning end anchorage device through a clamping piece, and the inclined upper end of each stay cable belt PE steel strand penetrates through the steel taper pipe and extends to the tower column of the cable-stayed bridge along the HDPE stay cable;
the pre-buried bushing pipe that has the slope in the pylon of cable-stay bridge, the slope lower extreme of bushing pipe extend to the pylon surface and be connected with pre-buried steel sheet, and pre-buried steel sheet is fixed in the pylon surface, and pre-buried steel sheet is outwards connected with and connects the steel sleeve on coaxial with the bushing pipe, the slope upper end of HDPE suspension cable sheathed tube stretches to connect the steel sleeve on, and the coaxial cover in slope upper end of HDPE suspension cable sheathed tube is equipped with thermal energy HDPE pipe, and thermal energy HDPE pipe external coaxial hoop cover has two semicircle clamps, and the pylon surface lies in and connects steel sleeve top position fixed with solid fixed ring, gu fixed ring passes through wire rope and the connection of two semicircle clamps with interim lock solid fixed HDPE suspension cable.
2. The cantilever beam cable construction structure of an n-type beam bridge according to claim 1, wherein: the inclined lower end of the tensioning end anchorage device is coaxially connected with a protective cover through a steel nail, the inclined lower end of each cable-stayed belt PE steel strand penetrates through the tensioning end anchorage device and penetrates into the protective cover, the part of each cable-stayed belt PE steel strand, which is inclined in the tensioning end anchorage device, is anchored through a clamping piece, and the protective cover is filled with anti-corrosive grease.
3. The cantilever beam cable construction structure of an n-type beam bridge according to claim 1, wherein: the outer wall of the tensioning end anchorage device is formed with external threads, a tensioning adjusting nut is screwed on the tensioning end anchorage device, and the tensioning end anchorage device is locked on the anchor backing plate by the tensioning adjusting nut.
4. The cantilever beam cable construction structure of an n-type beam bridge according to claim 1, wherein: the liner tube in the tower column of the cable-stayed bridge consists of an inner liner tube and an outer liner tube coaxially sleeved outside the inner liner tube.
5. The cantilever beam cable construction structure of an n-type beam bridge according to claim 1, wherein: the position of being located pre-buried steel sheet below on the column has construction platform through the steel wire ligature, the position of column outer wall is located the construction platform below encircles has the staple bolt steel sheet, the both ends of staple bolt steel sheet are connected with enhancement fore shaft board respectively, strengthen and connect through the fastening bolt that excels in between the fore shaft board, the construction platform bottom is arranged in on the enhancement fore shaft board that the staple bolt steel sheet is connected, the construction platform bottom still is fixed with the bottom girder steel, the column surface is located the pre-buried built-in fitting that is fixed with in staple bolt steel sheet below, the bottom girder steel, be connected with the angle steel of double pin between the built-in fitting.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021083135.6U CN212925814U (en) | 2020-06-12 | 2020-06-12 | Suspended casting beam cable construction structure of n-shaped beam bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021083135.6U CN212925814U (en) | 2020-06-12 | 2020-06-12 | Suspended casting beam cable construction structure of n-shaped beam bridge |
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| CN212925814U true CN212925814U (en) | 2021-04-09 |
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| CN202021083135.6U Active CN212925814U (en) | 2020-06-12 | 2020-06-12 | Suspended casting beam cable construction structure of n-shaped beam bridge |
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