CN209779465U - main tower erects cable-stay bridge's string cable construction system that changes - Google Patents
main tower erects cable-stay bridge's string cable construction system that changes Download PDFInfo
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- CN209779465U CN209779465U CN201920352340.9U CN201920352340U CN209779465U CN 209779465 U CN209779465 U CN 209779465U CN 201920352340 U CN201920352340 U CN 201920352340U CN 209779465 U CN209779465 U CN 209779465U
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- 238000010276 construction Methods 0.000 title claims abstract description 39
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 42
- 239000010959 steel Substances 0.000 claims abstract description 42
- 239000000725 suspension Substances 0.000 claims description 22
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000002411 adverse Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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Abstract
The utility model discloses a king-tower erects cable-stay bridge's string cable construction system that changes. The cable hanging construction system of the main tower vertical rotation cable-stayed bridge comprises a ground anchor, a tower end fixing device, a bearing cableway steel strand, a fulcrum tool, a lifting winch, a sling movable clamp, a traction winch and a steering pulley in the tower, wherein the ground anchor is respectively arranged at a main span and a side span beam end of the cable-stayed bridge; the tower end fixing devices are respectively arranged on the main span side and the side span side of the top of the main tower; two ends of the bearing cableway steel strand are respectively connected with the ground anchor and the tower end fixing device corresponding to the ground anchor; the fulcrum tool is fixedly arranged on the bearing cableway steel strand; the lifting winch and the traction winch are arranged on the bridge floor; the sling movable clamp is arranged at the tail end of a lifting steel wire rope of the lifting winch; the turning pulley in the tower is arranged in the main tower. The utility model provides a main tower erects changes cable-stay bridge's string cable construction system can overcome on-the-spot unfavorable condition, reduces the construction risk, reduces the expense.
Description
Technical Field
the utility model relates to a cable-stay bridge construction technical field, it is specific relates to a main tower erects changes cable-stay bridge's string cable construction system.
Background
cable-stayed bridges, also known as diagonal-tension bridges, can be divided into steel cable-stayed bridges, composite beam cable-stayed bridges and concrete beam cable-stayed bridges according to the materials used for the beams. The cable-stayed bridge mainly comprises a cable tower, a main beam and a stay cable, the main beam is directly pulled on the cable tower by a plurality of stay cables, and the cable-stayed bridge is a structural system formed by combining a pressure-bearing tower, the pulled cable and a bent beam body. The cable-stayed bridge is a self-anchored system, and the horizontal force of a stay cable is borne by a beam. The beam is supported not only on the abutment but also on the stay cables drawn out from the pylon. More and more main towers of the cable-stayed bridge adopt a steel tower structure, and the main tower can be formed by adopting vertical rotation construction due to the light dead weight of the steel tower.
after the construction of the main tower is finished, the construction of the stay cable is carried out, and the traditional cable hanging method generally adopts a tower crane or an automobile crane to hoist the stay cable, or a scaffold auxiliary stay cable is erected, or a hanger is arranged at the top of the main tower to hoist the stay cable.
If the stay cable is installed by adopting a tower crane hoisting method, the site is required to have tower crane installation conditions, the foundation is reinforced, the tower crane needs to be attached to the main tower, and the main tower needs to be repaired after the cable is hung.
If the truck crane is used for installing the stay cable, when the installation height is higher, the required tonnage of the truck crane is larger, the rental cost is higher, and the truck crane has larger unsafe factors.
If adopt the supplementary cable of hanging of scaffold frame, scaffold frame steel pipe lease expense is high, and the scaffold frame is set up the risk greatly, need depend on main tower, need restore the main tower after the construction finishes.
if the hanging cable construction is carried out by adopting a mode of installing the hanging bracket on the main tower, the condition that the hanging bracket is installed on the top of the main tower needs to be solved, and the hanging bracket is hung on the top of the tower by an extra hanger for installation.
The method for hanging the cable has the defects of inadmissible conditions, high safety risk, high cost and the like.
Disclosure of Invention
In order to solve the above-mentioned hanging cable construction and have the conditional technical problem that does not allow, the safety risk is high, the expense is high, the utility model provides a main tower erects changes cable-stay bridge's hanging cable construction system not only can overcome on-the-spot unfavorable condition, can also reduce the construction risk, reduce the expense.
the utility model provides a cable hanging construction system of a main tower vertical rotation cable-stayed bridge, which comprises a ground anchor, a tower end fixing device, a bearing cableway steel strand, a fulcrum tool, a hoisting winch, a sling movable clamp, a traction winch and a steering pulley in the tower, wherein the ground anchor is respectively arranged at the main span and the side span beam end of the cable-stayed bridge; the tower end fixing devices are respectively arranged on the main span side and the side span side of the top of the main tower and correspond to the ground anchor; two ends of the bearing cableway steel strand are respectively connected with the ground anchor and the tower end fixing device corresponding to the ground anchor; the fulcrum tool is fixedly arranged on the bearing cableway steel strand; the lifting winch and the traction winch are arranged on the bridge floor; the lifting winch and the fulcrum tool are positioned on the same side of the main tower, and the lifting winch and the fulcrum tool correspond to each other one by one; the traction winch is positioned on the other side of the main tower; a lifting steel wire rope of the lifting winch penetrates through the fulcrum tool, and the sling movable clamp is arranged at the tail end of the lifting steel wire rope; the tower internal diverting pulley is arranged inside the main tower and corresponds to the main tower internal cable pipeline, and a traction steel wire rope of the traction winch penetrates through the tower internal diverting pulley.
the utility model provides a main tower erects changes cable-stay bridge's a string cable construction system's a preferred embodiment, the earth anchor sets up 2 respectively at cable-stay bridge main bay and sidespan roof beam end, tower end fixing device sets up 2 respectively in the main bay side and the sidespan side on main tower top, just the earth anchor with tower end fixing device one-to-one.
The utility model provides a main tower erects to change cable-stay bridge's a string cable construction system in a preferred embodiment, tower end fixing device includes cassette and sleeve, the one end of cassette with the sleeve is connected through the round pin axle, the other end and main tower wall fixed connection.
the utility model provides a main tower erects to change cable-stay bridge's a string cable construction system's in a preferred embodiment, bearing cableway steel strand wires adopt phi 15.2mm steel strand wires.
In a preferred embodiment of the cable-hanging construction system of the main tower vertical-rotation cable-stayed bridge provided by the utility model, the fulcrum tool comprises a single-hole anchorage device, an anti-skid plug and a fixed pulley, and the single-hole anchorage device is sleeved on the weighing cableway steel strand; the anti-skid plug is arranged at one end of the single-hole anchorage device; the fixed pulley is arranged below the single-hole anchorage device.
The utility model provides a main tower erects to change cable-stay bridge's a preferred embodiment of string cable construction system, the crossing size that the hoist cable activity was pressed from both sides is less than the size of the anchor head of suspension cable.
Compared with the prior art, the utility model provides a main tower erects changes cable-stay bridge's string cable construction system has following beneficial effect: under the condition that the height of the hanging cable is higher, the foundation is not required to be processed in the hanging cable construction, a tower crane is not required to be installed or a truck crane is not required to be adopted, the site adverse conditions can be overcome, the construction risk can be reduced, and the cost can be reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
fig. 1 is a schematic view of the overall structure of a suspension cable construction system of a main tower vertical-rotation cable-stayed bridge provided by the present invention;
FIG. 2 is a schematic structural view of a tower end fixing device of a suspension cable construction system of the main tower vertical-to-cable-stayed bridge shown in FIG. 1;
FIG. 3 is an enlarged view of the main tower of FIG. 1 at point A in the cable-stayed bridge construction system;
Fig. 4 is an enlarged view of a portion B of the suspension cable construction system of the main tower vertical-rotation cable-stayed bridge shown in fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
referring to fig. 1 to 4, wherein fig. 1 is a schematic view of an overall structure of a main tower vertical rotation cable-stayed bridge suspension cable construction system, fig. 2 is a schematic view of a tower end fixing device of the main tower vertical rotation cable-stayed bridge suspension cable construction system, fig. 3 is an enlarged view of a position a in the main tower vertical rotation cable-stayed bridge suspension cable construction system, fig. 4 is an enlarged view of a position B in the main tower vertical rotation cable-stayed bridge suspension cable construction system, fig. 1 illustrates a main tower vertical rotation cable-stayed bridge suspension cable construction system 1 including a ground anchor 11, a tower end fixing device 12, a load-bearing way steel strand 13, a fulcrum tool 14, a hoisting winch 15, a movable clamp 16, a traction machine 17 and an intra-tower steering pulley 18, the ground anchor 11 is respectively disposed at a main span and an edge beam end of the main tower, the tower end fixing device 12 is respectively disposed at a main side and a span side of the top of the main tower 21 and is disposed at a position corresponding to the ground anchor 11, the main tower 14 and the main tower internal steering pulley 21 is disposed at the same side of the cable-stayed bridge, the main tower internal cable-stayed bridge suspension cable-tower traction tool 21, the main tower internal cable-stayed bridge suspension cable-stayed bridge suspension cable-stayed cable-traction tool 21 is disposed at a position pulley 21, the same side of the main tower traction cable-stayed bridge, the main tower traction cable-stayed bridge traction cable-stayed bridge suspension cable-stayed bridge suspension cable-stayed bridge traction tool 21, the main tower 21, the cable-stayed bridge suspension cable-stayed bridge traction tool 21 and the main tower internal-stayed bridge suspension cable-stayed bridge suspension.
The anchor block 11 is respectively provided with 2 on the main span and the side span beam end of the cable-stayed bridge, the tower end fixing device 12 is respectively provided with 2 on the main span side and the side span side of the top end of the main tower 21, the anchor block 11 is in one-to-one correspondence with the tower end fixing device 12, and the anchor block 11 is respectively connected with the tower end fixing device 12 by the bearing cableway steel strand 13, so that the main span side and the side span side of the main tower 21 respectively form 2 bearing cableways.
the tower end fixing device 12 includes a clamping seat 121 and a sleeve 123, one end of the clamping seat 121 is connected to the sleeve 123 through a pin 125, and the other end is fixedly connected to the tower wall of the main tower 21.
The bearing cableway steel strand 13 is a steel strand with the diameter of 15.2 mm.
The fulcrum tool 14 comprises a single-hole anchor 141, an anti-skid plug 143 and a fixed pulley 145, and the single-hole anchor 141 is sleeved on the weighing cableway steel strand 13; the anti-skid plug 143 is arranged at one end of the single-hole anchorage 141; the fixed pulley 145 is disposed below the single-hole anchor 141.
The size of the through opening of the sling movable clamp 16 is smaller than the size of the anchor head 221 of the stay cable 22, and when the sling movable clamp 16 slides to the anchor head 221 of the stay cable 22, the sling movable clamp cannot slide continuously, so that the stay cable 22 can be lifted upwards along with the lifting of the lifting steel wire rope 151.
When the hanging rope construction is carried out, the method comprises the following steps:
S1, respectively forming tower end fixing device mounting holes on the main span side and the side span side of the top of the main tower 21 before the main tower enters a field;
S2, installing the ground anchor 11: the main span and the side span beam ends of the cable-stayed bridge are respectively provided with a ground anchor 11, and the ground anchors 11 correspond to the mounting holes of the tower end fixing devices;
S3, after the main tower 21 enters the field, respectively installing the tower end fixing devices 12 to the tower end fixing device installation holes, and then connecting one ends of the bearing cableway steel strands 13 with the tower end fixing devices 12;
S4, before the main tower 21 vertically rotates, installing a fulcrum tool 14, a tower internal steering pulley 18, a lifting winch 15 and a traction winch 17, wherein a sling movable clamp 16 is installed at the tail end of a lifting steel wire rope 151 of the lifting winch 15, and a traction steel wire rope 171 of the traction winch 17 extends out of a first stay cable pipeline to be installed;
specifically, a fulcrum tool 14 is installed at one end of the bearing cableway steel strand 13 close to the tower end fixing device 12; installing the tower inside diverting pulleys 18 at the corresponding positions of the cable ducts in the tower; respectively installing a lifting winch 15 and a traction winch 17 on a bridge floor, wherein the lifting winch 15 and the fulcrum tool 14 are positioned on the same side of a main tower 21, and the traction winch 17 is positioned on the other side of the main tower 21; a hoisting steel wire rope 151 of the hoisting winch 15 penetrates through the fulcrum tool 14, and a sling movable clamp 16 is installed at the tail end of the hoisting steel wire rope; a traction wire rope 171 of the traction winch 17 passes through the main tower 21 and extends out of a first stay cable conduit pipe to be installed;
S5, after the main tower 21 is vertically rotated, connecting and tensioning the other end of the bearing cableway steel strand 13 with the ground anchor 11 to form a bearing cableway;
S6, pulling the stay cable 22 out of the anchor head 221, clamping the stay cable by the cable movable clamp 16, and connecting the traction steel wire rope 171 with the anchor head 221;
the traction steel wire rope 171 is connected with the anchor head 221 and can play a role in traction and guidance when the tower end of the stay cable 22 is installed;
S7, starting the lifting winch 15, lifting the stay cable 22, guiding the traction winch 17 in a matched mode, feeding the anchor head 221 into a cable channel pipe, and screwing a nut to complete tower end installation;
S8, sliding the sling movable clamp 16 downwards along the stay cable 22, and simultaneously adopting a half clamp for auxiliary limiting to perform aerial cable spreading;
S9, pulling the beam end anchor head of the stay cable 22 out of the cable duct pipe through the traction device, screwing the screw cap, and finishing the beam end installation of the stay cable;
and S10, repeating the steps S6 ~ S9, and finishing the installation of the rest stay cables.
The anchor blocks 11 are respectively arranged at the main span and the side span beam end of the cable-stayed bridge in 2 numbers, and the tower end fixing devices 12 are respectively arranged at the main span side and the side span side of the top end of the main tower 21 in 2 numbers and are in one-to-one correspondence with the anchor blocks 11; the ground anchor 11 and the tower end fixing device 12 are respectively connected by the bearing cableway steel strand 13, so that 2 bearing cableways are respectively formed on the main span side and the side span side of the main tower 21.
The utility model provides a main tower erects changes cable-stay bridge's string cable construction system 1 has following beneficial effect: under the condition that the height of the hanging cable is higher, the foundation is not required to be processed in the hanging cable construction, a tower crane is not required to be installed or a truck crane is not required to be adopted, the site adverse conditions can be overcome, the construction risk can be reduced, and the cost can be reduced.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.
Claims (6)
1. A cable hanging construction system of a main tower vertical rotation cable-stayed bridge is characterized by comprising a ground anchor, a tower end fixing device, a bearing cableway steel strand, a fulcrum tool, a lifting winch, a sling movable clamp, a traction winch and an in-tower steering pulley, wherein the ground anchor is respectively arranged at a main span and an edge-span beam end of the cable-stayed bridge; the tower end fixing devices are respectively arranged on the main span side and the side span side of the top of the main tower and correspond to the ground anchor; two ends of the bearing cableway steel strand are respectively connected with the ground anchor and the tower end fixing device corresponding to the ground anchor; the fulcrum tool is fixedly arranged on the bearing cableway steel strand; the lifting winch and the traction winch are arranged on the bridge floor; the lifting winch and the fulcrum tool are positioned on the same side of the main tower, and the lifting winch and the fulcrum tool correspond to each other one by one; the traction winch is positioned on the other side of the main tower; a lifting steel wire rope of the lifting winch penetrates through the fulcrum tool, and the sling movable clamp is arranged at the tail end of the lifting steel wire rope; the tower internal diverting pulley is arranged inside the main tower and corresponds to the main tower internal cable pipeline, and a traction steel wire rope of the traction winch penetrates through the tower internal diverting pulley.
2. the system for constructing a suspension cable of a main tower vertical-to-cable-stayed bridge according to claim 1, wherein the number of the ground anchors provided to the main span and the side span beam end of the cable-stayed bridge is 2, the number of the tower end fixing devices provided to the main span side and the side span side of the top end of the main tower is 2, and the ground anchors and the tower end fixing devices are in one-to-one correspondence.
3. the system for constructing a suspension cable of a main tower-vertical cable-stayed bridge according to claim 1, wherein the tower end fixing device comprises a clamping seat and a sleeve, one end of the clamping seat is connected with the sleeve through a pin shaft, and the other end of the clamping seat is fixedly connected with the tower wall of the main tower.
4. The system of claim 1, wherein the steel strands of the load-bearing cableway are steel strands with a diameter of 15.2 mm.
5. The system for constructing the suspension cable of the main tower vertical-rotation cable-stayed bridge according to claim 1, wherein the fulcrum tool comprises a single-hole anchor, an anti-slip plug and a fixed pulley, and the single-hole anchor is sleeved on the bearing cableway steel strand; the anti-skid plug is arranged at one end of the single-hole anchorage device; the fixed pulley is arranged below the single-hole anchorage device.
6. the system for constructing a suspension cable of a main tower vertical-transition cable-stayed bridge according to claim 1, wherein the size of the penetrating opening of the suspension cable movable clamp is smaller than that of the anchor head of the stay cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920352340.9U CN209779465U (en) | 2019-03-19 | 2019-03-19 | main tower erects cable-stay bridge's string cable construction system that changes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920352340.9U CN209779465U (en) | 2019-03-19 | 2019-03-19 | main tower erects cable-stay bridge's string cable construction system that changes |
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| CN209779465U true CN209779465U (en) | 2019-12-13 |
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| CN201920352340.9U Expired - Fee Related CN209779465U (en) | 2019-03-19 | 2019-03-19 | main tower erects cable-stay bridge's string cable construction system that changes |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853393A (en) * | 2019-03-19 | 2019-06-07 | 湖南联智智能科技有限公司 | A kind of the hanging cable construction system and its construction method of king-tower vertical transfer cable-stayed bridge |
-
2019
- 2019-03-19 CN CN201920352340.9U patent/CN209779465U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853393A (en) * | 2019-03-19 | 2019-06-07 | 湖南联智智能科技有限公司 | A kind of the hanging cable construction system and its construction method of king-tower vertical transfer cable-stayed bridge |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191213 |
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| CF01 | Termination of patent right due to non-payment of annual fee |