CN215925708U - Superposed beam cable-stayed bridge tower area cable-free beam section construction system - Google Patents
Superposed beam cable-stayed bridge tower area cable-free beam section construction system Download PDFInfo
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- CN215925708U CN215925708U CN202122373914.0U CN202122373914U CN215925708U CN 215925708 U CN215925708 U CN 215925708U CN 202122373914 U CN202122373914 U CN 202122373914U CN 215925708 U CN215925708 U CN 215925708U
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Abstract
The utility model discloses a superposed beam cable-stayed bridge tower area cable-free beam section construction system, which comprises a bridge deck crane, a temporary cantilever hanger arranged on an upper cross beam and used for hoisting a tower area cable-free beam section and the bridge deck crane, and a temporary cable for temporarily fixing the tower area cable-free beam section; the temporary cantilever hanger comprises two Bailey beams which are arranged at the top of the upper cross beam in parallel along the extending direction of the bridge body, and two ends of each Bailey beam are respectively provided with a winch; the temporary guy cable comprises a side span temporary guy cable used for temporarily fixing the side span first beam section and a main span temporary guy cable used for temporarily fixing the main span first beam section. The utility model has novel and reasonable design, utilizes the mode of matching the temporary cantilever hanger and the temporary guy cable to hoist the ropeless beam section in the tower area, does not use a floating crane, does not arrange an assembling bracket, does not occupy a main channel, reduces the construction cost, improves the construction period and has low safety risk.
Description
Technical Field
The utility model belongs to the technical field of construction of a cable-free beam section in a tower area of a cable-stayed bridge, and particularly relates to a construction system of a cable-free beam section in a tower area of a superposed beam cable-stayed bridge.
Background
With the rapid development of bridges across the sea and the river, the application of the composite beam cable-stayed bridge to the crossing of large rivers is more and more, particularly to the crossing of rivers with higher channel grades.
In order to accelerate the construction of the cable-free beam section in the tower area, the construction of the cable-free beam section in the cable-stayed bridge tower area by the floating crane and support splicing method is widely applied.
At present, the construction of the cable-free beam section of the superposed beam cable-stayed bridge on the river in China mostly adopts a floating crane and support assembly method, but the method can occupy a main channel and has the influence on navigation of other ships.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the defects in the prior art are overcome, and the construction system for the tower area of the superposed beam cable-stayed bridge is provided, is novel and reasonable in design, is used for hoisting the tower area cable-free beam section in a mode of matching the temporary cantilever hanging bracket and the temporary guy cable, does not use a floating crane, does not arrange an assembling support below, does not occupy a main channel, reduces the construction cost, improves the construction period, is low in safety risk, and is convenient to popularize and use.
In order to solve the technical problems, the utility model adopts the technical scheme that: the utility model provides a coincide roof beam cable-stay bridge tower district does not have cable beam section construction system which characterized in that: the temporary suspension bracket is arranged on the upper cross beam and used for hoisting a tower area ropeless beam section and the bridge deck crane, and a temporary guy cable for temporarily fixing the tower area ropeless beam section;
the tower area cable-free beam section comprises a middle beam section, a first side span beam section and a first main span beam section, wherein the middle beam section is positioned on the lower cross beam;
the temporary cantilever hanger comprises two Bailey beams which are arranged at the top of the upper cross beam in parallel along the extending direction of the bridge body, and two ends of each Bailey beam are respectively provided with a winch;
the temporary inhaul cable comprises a side span temporary inhaul cable for temporarily fixing a side span I beam section and a main span temporary inhaul cable for temporarily fixing a main span I beam section, the side span temporary inhaul cable comprises a side span temporary cable, one end of the side span temporary cable is fixed at the top of the tower column close to the side span side through a side span anchoring end anchor box, and the other end of the side span temporary cable is fixed on the side span I beam section through a side span tensioning end anchor box; the main span temporary guy cable comprises a main span temporary guy cable, one end of the main span temporary guy cable is fixed at the top of the tower column close to the main span side through a main span anchoring end anchor box, and the other end of the main span temporary guy cable is fixed on a first main span beam section through a main span tensioning end anchor box.
The utility model provides an foretell coincide beam cable-stay bridge tower district does not have cable beam section construction system which characterized in that: and the bottom of the upper cross beam is provided with a shoulder pole beam under the Bailey beam, and the Bailey beam and the corresponding shoulder pole beam are fastened through a Bailey beam fastener.
The utility model provides an foretell coincide beam cable-stay bridge tower district does not have cable beam section construction system which characterized in that: the bailey beam fastener comprises a precision-rolled threaded steel fastener.
The utility model provides an foretell coincide beam cable-stay bridge tower district does not have cable beam section construction system which characterized in that: still including setting up at the tower body cushion cap and being close to the side-span trestle of side-span side, the tower body cushion cap is close to the main side-span and is provided with the main trestle of side-span, installs the tower crane on the tower body cushion cap.
The utility model provides an foretell coincide beam cable-stay bridge tower district does not have cable beam section construction system which characterized in that: the four winches extend out of four steel wire ropes respectively, and the four steel wire ropes are a first steel wire rope, a second steel wire rope, a third steel wire rope and a fourth steel wire rope respectively.
Compared with the prior art, the utility model has the following advantages:
1. according to the utility model, the temporary cantilever hanging bracket is arranged to hoist the cable-free beam section in the tower area of the superposed beam cable-stayed bridge on the trestle, so that the situation that a floating crane occupies a main channel when a large floating crane is adopted to hoist a steel beam is avoided, the safety problem caused by collision between the floating crane and a passing ship in the hoisting process is greatly eliminated, the safety benefit is improved, and the popularization and the use are convenient.
2. The construction method of the temporary cantilever hanger and the temporary cable in the tower area cable-free beam section is adopted, the ship closing cost and the investment of a large floating crane and a support are reduced, the construction cost is reduced, and the method is reliable and stable and has a good use effect.
3. The utility model has novel and reasonable design, utilizes the mode of matching the temporary cantilever hanger and the temporary guy cable to hoist the cable-free beam section in the tower area, does not use a floating crane, does not arrange an assembling bracket, does not occupy a main channel, reduces the construction cost, improves the construction period, has low safety risk, is not influenced by the sealing navigation time, and is convenient for popularization and use.
In conclusion, the utility model has novel and reasonable design, utilizes the mode of matching the temporary cantilever hanging bracket and the temporary guy cable to hoist the ropeless beam section in the tower area, does not use a floating crane or an assembling bracket, does not occupy a main channel, reduces the construction cost, improves the construction period, has low safety risk and is convenient to popularize and use.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
Fig. 1 is a schematic view of an installation structure of a temporary cantilever crane according to the present invention.
FIG. 2 is a schematic view of an installation structure of the tower crane of the present invention.
Fig. 3 is a schematic structural view of the hoisting of the intermediate beam section according to the present invention.
FIG. 4 is a right side view of FIG. 3 with the tower crane added.
FIG. 5 is a schematic structural view of a first beam section of the hoisting side span of the utility model.
FIG. 6 is a schematic connection diagram of the first side span beam section and the temporary side span stay cable.
FIG. 7 is a schematic view of the installation position of the side span anchoring end anchor box of the present invention.
FIG. 8 is a schematic view of the installation structure of the bridge deck crane of the present invention.
Fig. 9 is a schematic structural view of the first main span beam segment hoisted by the utility model.
FIG. 10 is a schematic connection diagram of a primary span I beam section and a primary span temporary stay cable according to the utility model.
Description of reference numerals:
1-a lower beam; 2-middle beam section; 3, spanning a first beam section on the side;
4, a main span I beam section; 11-a winch; 12-bailey beam;
14-a bailey beam fastener; 15-carrying pole beam; 16-upper beam;
17-tower crane; 18-1-side span trestle; 18-2-main span trestle;
19-a first steel cord; 20-a second wire rope; 21-third wire rope;
22-fourth wire rope; 23-side span temporary cable; 24-side span anchoring end anchor box;
25-side span tensioning end anchor box; 26-a bridge deck crane; 27-main span temporary cable;
28-anchor box of anchor end of main span; 29-main span tension end anchor box.
Detailed Description
As shown in fig. 1 to 10, the present invention includes a bridge deck crane 26, a temporary cantilever hanger installed on the upper beam 16 for hoisting the tower region ropeless beam section and the bridge deck crane 26, and a temporary guy cable for temporarily fixing the tower region ropeless beam section;
the tower area cable-free beam section comprises a middle beam section 2 positioned on the lower cross beam 1, a first side span beam section 3 close to the side span and connected with the middle beam section 2, and a first main span beam section 4 close to the side span and connected with the middle beam section 2;
the temporary cantilever hanger comprises two Bailey beams 12 which are arranged at the top of an upper cross beam 16 in parallel along the extending direction of a bridge body, and two ends of each Bailey beam 12 are respectively provided with a winch 11;
the temporary guy cables comprise side span temporary guy cables for temporarily fixing the side span I beam sections 3 and main span temporary guy cables for temporarily fixing the main span I beam sections 4, the side span temporary guy cables comprise side span temporary guy cables 23, one ends of the side span temporary guy cables 23 are fixed at the tops of the tower columns close to the side span sides through side span anchoring end anchor boxes 24, and the other ends of the side span temporary guy cables 23 are fixed on the side span I beam sections 3 through side span tensioning end anchor boxes 25; the main span temporary guy cable comprises a main span temporary guy cable 27, one end of the main span temporary guy cable 27 is fixed at the top of a tower column close to the main span side through a main span anchoring end anchor box 28, and the other end of the main span temporary guy cable 27 is fixed on a main span I beam section 4 through a main span tensioning end anchor box 29.
The temporary cantilever hanging bracket is arranged to hoist the cable-free beam section in the tower area of the superposed beam cable-stayed bridge on the trestle, so that the situation that a floating crane occupies a main channel when a large floating crane is adopted to hoist a steel beam is avoided, the safety problem caused by collision between the floating crane and a passing ship in the hoisting process is greatly eliminated, and the safety benefit is improved; by adopting the construction mode that the temporary cantilever hangers and the temporary cables are arranged in the cable-free beam section of the tower area, the sailing closing cost and the investment of large-scale floating cranes and supports are reduced, so that the construction cost is reduced; the cable-free beam section in the tower area is hoisted by using the mode of matching the temporary cantilever hanger and the temporary guy cable, a floating crane is not used, an assembling support is not arranged below, a main channel is not occupied, the construction cost is reduced, the construction period is prolonged, the safety risk is low, and the influence of the sealing navigation time is avoided.
In this embodiment, a shoulder pole beam 15 is disposed at the bottom of the upper cross beam 16 and under the bailey beam 12, and the bailey beam 12 and the corresponding shoulder pole beam 15 are fastened by a bailey beam fastener 14.
In this embodiment, the bailey beam fastener 14 comprises a fine-pitch threaded steel fastener.
In the embodiment, the tower crane further comprises a side span support trestle 18-1 arranged on the tower body bearing platform close to the side span, a main span support trestle 18-2 arranged on the tower body bearing platform close to the main span, and a tower crane 17 arranged on the tower body bearing platform.
In this embodiment, the number of the winches 11 is four, and the four winches 11 respectively extend out of four steel wire ropes, which are a first steel wire rope 19, a second steel wire rope 20, a third steel wire rope 21 and a fourth steel wire rope 22.
When the utility model is used, the method comprises the following steps:
step one, installing a temporary cantilever hanger: a side span trestle 18-1 is arranged on the tower body bearing platform near the side span, a main span trestle 18-2 is arranged on the tower body bearing platform near the main span, a tower crane 17 is arranged on the tower body bearing platform, and a temporary cantilever hanger is arranged on an upper cross beam 16 by utilizing the tower crane 17;
step two, mounting the intermediate beam section: the middle beam section 2 is transported to the side-span trestle 18-1, the middle beam section 2 is transported to the position right below the hanging point of the temporary cantilever hanging bracket through a crawler crane on the side-span trestle 18-1, the middle beam section 2 is accurately installed on the lower cross beam 1 through the cooperation of a tower crane 17 after the middle beam section 2 is hoisted to the installation position by a hoist 11;
step three, mounting of a side span I beam section: transporting the first side span beam section 3 to a side span trestle 18-1, transporting the first side span beam section 3 to a position right below a temporary cantilever hanger lifting point through a crawler crane on the side span trestle 18-1, lifting the first side span beam section 3 by using a winch 11, and connecting the first side span beam section 3 with the middle beam section 2 by using a tower crane 17 until the first side span beam section 3 and the middle beam section 2 are installed in place;
step four, temporarily fixing the side span I beam section: hoisting an edge span anchoring end anchor box 24 and an edge span tensioning end anchor box 25 by using a tower crane 17, after hoisting is completed, arranging the edge span tensioning end anchor box 25 on an edge girder of the edge span I beam section 3, arranging the edge span anchoring end anchor box 24 on the top of a tower column close to the edge span side, mounting an edge span temporary cable 23 by using the tower crane again, fixing one end of the edge span temporary cable 23 on the top of the tower column close to the edge span side through the edge span anchoring end anchor box 24, and fixing the other end of the edge span temporary cable 23 on the edge span I beam section 3 through the edge span tensioning end anchor box 25;
tensioning the side span temporary cable 23 after the side span temporary cable 23 is installed;
step five, mounting a main span I beam section: transporting the first main-span beam section 4 to a first main-span trestle 18-2, transporting the first main-span beam section 4 to a position right below a temporary cantilever hanger lifting point through a crawler crane on the first main-span trestle 18-2, lifting a bridge deck crane 26 to a designated position on the first side-span beam section 3 and the middle beam section 2 by using the temporary cantilever hanger, and lifting and mounting the first main-span beam section 4 by using the bridge deck crane 26;
step six, temporarily fixing the main span I beam section: hoisting a main span anchoring end anchor box 28 and a main span tensioning end anchor box 29 by using a tower crane 17, after the hoisting is finished, arranging the main span tensioning end anchor box 29 on a side girder of a main span first beam section 4, arranging the main span anchoring end anchor box 28 on the top of a tower column close to the main span side, and installing a main span temporary cable 27 by using the tower crane again, wherein one end of the main span temporary cable 27 is fixed on the top of the tower column close to the main span side through the main span anchoring end anchor box 28, and the other end of the main span temporary cable 27 is fixed on the main span first beam section 4 through the main span tensioning end anchor box 29;
tensioning the main-span temporary cable 27 after the installation of the main-span temporary cable 27 is finished, and completing construction of a cable-free beam section in a tower area of the composite beam cable-stayed bridge;
seventhly, dismantling the temporary cantilever hanger and the temporary cable: after the construction of the cable-free beam section of the superposed beam cable-stayed bridge tower area is completed, the temporary cantilever hangers are dismantled one by adopting a tower crane 17, a winch is dismantled firstly, and then the Bailey beam 12 is dismantled;
after entering the permanent cables, the side span temporary cables 23 and the main span temporary cables 27 are dismantled.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (5)
1. The utility model provides a coincide roof beam cable-stay bridge tower district does not have cable beam section construction system which characterized in that: the temporary suspension tower comprises a bridge deck crane (26), a temporary cantilever hanger arranged on an upper cross beam (16) and used for hoisting a tower area ropeless beam section and the bridge deck crane (26), and a temporary guy cable for temporarily fixing the tower area ropeless beam section;
the tower area cable-free beam section comprises a middle beam section (2) positioned on the lower cross beam (1), a side span I beam section (3) close to the side span and connected with the middle beam section (2), and a main span I beam section (4) close to the main span and connected with the middle beam section (2);
the temporary cantilever hanger comprises two Bailey beams (12) which are arranged at the top of an upper cross beam (16) in parallel along the extending direction of a bridge body, and two ends of each Bailey beam (12) are respectively provided with a winch (11);
the temporary guy cable comprises a side span temporary guy cable used for temporarily fixing a side span I beam section (3) and a main span temporary guy cable used for temporarily fixing a main span I beam section (4), the side span temporary guy cable comprises a side span temporary guy cable (23), one end of the side span temporary guy cable (23) is fixed at the top of the tower column close to the side span side through a side span anchoring end anchor box (24), and the other end of the side span temporary guy cable (23) is fixed on the side span I beam section (3) through a side span tensioning end anchor box (25); the main span temporary guy cable comprises a main span temporary guy cable (27), one end of the main span temporary guy cable (27) is fixed at the top of a tower column close to the main span side through a main span anchoring end anchor box (28), and the other end of the main span temporary guy cable (27) is fixed on a main span I beam section (4) through a main span tensioning end anchor box (29).
2. The system for constructing the ropeless beam section in the tower area of the composite beam cable-stayed bridge according to claim 1, wherein: a shoulder pole beam (15) is arranged at the bottom of the upper cross beam (16) and is positioned under the Bailey beam (12), and the Bailey beam (12) and the corresponding shoulder pole beam (15) are fastened through a Bailey beam fastener (14).
3. The system for constructing the ropeless beam section in the tower area of the composite beam cable-stayed bridge according to claim 2, wherein: the bailey beam fastener (14) comprises a precision threaded steel fastener.
4. The system for constructing the ropeless beam section in the tower area of the composite beam cable-stayed bridge according to claim 1, wherein: the tower crane is characterized by further comprising a side span support trestle (18-1) arranged on the tower body bearing platform close to the side span, a main span support trestle (18-2) is arranged on the tower body bearing platform close to the main span, and a tower crane (17) is installed on the tower body bearing platform.
5. The system for constructing the ropeless beam section in the tower area of the composite beam cable-stayed bridge according to claim 1, wherein: the number of the winches (11) is four, the four winches (11) respectively extend out of four steel wire ropes, and the four steel wire ropes are respectively a first steel wire rope (19), a second steel wire rope (20), a third steel wire rope (21) and a fourth steel wire rope (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122373914.0U CN215925708U (en) | 2021-09-29 | 2021-09-29 | Superposed beam cable-stayed bridge tower area cable-free beam section construction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122373914.0U CN215925708U (en) | 2021-09-29 | 2021-09-29 | Superposed beam cable-stayed bridge tower area cable-free beam section construction system |
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| Publication Number | Publication Date |
|---|---|
| CN215925708U true CN215925708U (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122373914.0U Active CN215925708U (en) | 2021-09-29 | 2021-09-29 | Superposed beam cable-stayed bridge tower area cable-free beam section construction system |
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| CN (1) | CN215925708U (en) |
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2021
- 2021-09-29 CN CN202122373914.0U patent/CN215925708U/en active Active
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