CN113073565A - Long-distance steel strand integral penetrating device and method - Google Patents
Long-distance steel strand integral penetrating device and method Download PDFInfo
- Publication number
- CN113073565A CN113073565A CN202110372198.6A CN202110372198A CN113073565A CN 113073565 A CN113073565 A CN 113073565A CN 202110372198 A CN202110372198 A CN 202110372198A CN 113073565 A CN113073565 A CN 113073565A
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- China
- Prior art keywords
- winch
- steel
- penetrating
- bridge
- wire rope
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
Abstract
The invention provides a long-distance steel strand integral penetrating device and a method, wherein windlasses are respectively arranged at two ends, a steel wire rope of a penetrating end windlass is brought to a penetrating end by the aid of the penetrating machine and a first steel strand, the steel wire rope transmitted to the windlass is brought to the penetrating end and is connected with a whole bundle of steel strands, so that the whole bundle of steel strands can be penetrated by the windlasses at the penetrating end, a central steel wire of a plurality of steel strands does not need to penetrate into an upset head, and then a traction head and a traction sleeve are connected. Belongs to the technical field of bridge construction.
Description
Technical Field
The invention relates to a long-distance steel strand integral penetrating device and a long-distance steel strand integral penetrating method, and belongs to the field of bridge construction.
Background
In the process of bridge manufacturing and construction, a plurality of strands of steel strands need to be pulled through to exert prestress, namely prestress pulling. At present, the common stringing modes include a single stringing mode and an integral stringing mode. Wherein, the steel strands are threaded through the corrugated pipe one by a single threading machine. The mode not only consumes time, but also can not completely prevent the steel strand from being wound by penetrating the steel strand later and penetrating the steel strand first, and the problem that the stress of the steel strand is uneven during tensioning can also exist. The whole bundle penetrating adopts a pier head mode, outer ring steel wires of the steel strands are cut off, only one central steel wire is left, the central steel wires of the steel strands penetrate into the upset head, then the traction head and the traction sleeve are connected, and bundle penetrating is completed through the winch. Although the method can solve the problem of steel strand winding, the required workload of cutting, bundling and the like is very large, the operation is very complicated, time and labor are wasted, the bundling efficiency is seriously influenced, and a large amount of steel strands are wasted. And the two beam penetrating modes are very labor-consuming for long-span beam penetrating, which may cause failure of long-distance beam penetrating.
Disclosure of Invention
The invention provides a device and a method for integrally penetrating a long-distance steel strand, which aim to solve the problem that the existing two methods are very labor-consuming for penetrating the long-distance strand, and the long-distance strand penetrating is easy to fail.
In order to achieve the purpose, the whole beam penetrating device of the long-distance steel strand is supposed to be adopted, and comprises a first winch and a second winch which are arranged at two ends of a bridge respectively, wherein one end of the second winch is provided with a beam penetrating machine and a second fixed pulley, one end of the first winch is also provided with the first fixed pulley, the first fixed pulley and the second fixed pulley are arranged on the outer side of the end part of the bridge, the first steel strand penetrates through a beam penetrating hole of the bridge through the beam penetrating machine and extends to the other end of the bridge, and steel wire ropes of the winches at two ends of the bridge respectively bypass the first fixed pulley and the second fixed pulley and are fixedly connected with two ends of the first steel strand.
In the integral beam penetrating device, one end of a bridge where the second winch is located is also provided with a movable pulley, a steel wire rope of the second winch sequentially bypasses the second fixed pulley, the movable pulley and the second fixed pulley and then is fixedly connected with the end part of the first steel strand, and the tension of the second winch is reduced by arranging the movable pulley.
In the integral beam penetrating device, the first fixed pulley and the second fixed pulley are anchored and fixed on the outer sides of two ends of the bridge through a pulley frame or concrete;
in the integral beam penetrating device, the first fixed pulley is fixed on the outer side of one end of the bridge through the pulley yoke, and the second fixed pulley is anchored on the outer side of the other end of the bridge through concrete.
The invention also provides a whole penetrating method of the long-distance steel strand, which comprises the following specific steps:
firstly, weaving a plurality of steel strands, fixing one ends of the plurality of steel strands together by using a hoop to form a whole bundle of steel strands, placing the whole bundle of steel strands on a bridge floor, penetrating a first steel strand from one end of the bridge to the other end by using a strand penetrating machine, connecting a steel wire rope of a first winch with a penetrating end of the first steel strand by winding a first fixed pulley, utilizing the capability of the strand penetrating machine to return the steel strands to the penetrating end, connecting a steel wire rope of a second winch with the steel wire rope of the first winch through a second fixed pulley, pulling the steel wire rope of the second winch from the penetrating end by using the first winch, removing the connection between the steel wire rope of the first winch and the steel wire rope of the second winch at the moment, connecting the steel wire rope of the first winch with the fixed end of the whole bundle of steel strands of the bridge floor, and pulling the whole bundle of steel strands to the penetrating end by the steel wire rope wound around the first fixed pulley, at the moment, a steel wire rope of a second winch is connected with the fixed end of the whole bundle of steel strands, the second winch is started to pull out the whole bundle of steel strands from the penetrating end through a bridge penetrating hole, and the whole penetrating of the long-distance steel strands is completed, wherein the penetrating end and the penetrating end refer to the penetrating end and the penetrating end of the first steel strand;
in the method, one end of a bridge where a second winch is located is also provided with a movable pulley, a steel wire rope of the second winch sequentially rounds a second fixed pulley, the movable pulley and the second fixed pulley and then is fixedly connected with the end part of a first steel strand, and the movable pulley is arranged to reduce the tension of the second winch;
in the method, the first fixed pulley is fixed on the outer side of one end of the bridge through a pulley frame, and the second fixed pulley is anchored on the outer side of the other end of the bridge through concrete.
Compared with the prior art, the invention has the advantages that the winches are respectively arranged at two ends, the steel wire rope of the winch at the penetrating end is brought to the penetrating end by the strand penetrating machine and the first steel strand, and then the steel wire rope transmitted to the winch is brought to the penetrating end and connected with the whole bundle of steel strands, so that the whole bundle of steel strands can be penetrated by the winch at the penetrating end, the problems that single strand penetrating consumes time and is easy to wind and stress non-uniformity are solved, meanwhile, the method is simpler in construction, the workload of cutting and penetrating is greatly reduced compared with the existing whole penetrating, the working efficiency is obviously improved, the waste of the steel strands is avoided, the power of the winch can be greatly reduced by adding the movable pulley, the work can be finished on a bridge floor by using the winch with low tonnage, the winch can be fixed by using the box girder reserved hole, and the large-size winch is not needed to be used in the existing whole penetrating work, the problem that the bridge deck can not be fixedly installed is solved, the requirement for large-scale equipment is greatly reduced, the equipment and transportation cost is further reduced, the bridge deck is suitable for large-scale popularization and application in the field of bridge construction, and the practicability is high.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings, and it should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.
Examples
Referring to fig. 1, the embodiment provides a long-distance steel strand integral crossing device, which includes a first winch 2 and a second winch 3 respectively disposed at two ends of a bridge 1, a crossing machine 4 and a second fixed pulley 6 disposed at one end of the second winch 3, a first fixed pulley 5 disposed at one end of the first winch 2, the first fixed pulley 5 and the second fixed pulley 6 both disposed at the outer side of the end of the bridge 1, a first steel strand 7 penetrating through a bridge crossing hole 1-1 via the crossing machine 4 and extending to the other end of the bridge 1, a steel wire rope of the first winch 2 fixedly connected to one end of the first steel strand 7 by passing through the first fixed pulley 5, a movable pulley 8 disposed at one end of the bridge 1 where the second winch 3 is disposed, a steel wire rope of the second winch 3 fixedly connected to the end of the first steel strand 7 by passing through the second fixed pulley 6, the movable pulley 8, and the second fixed pulley 6 in sequence, the pulling force of the second winch 3 is reduced by arranging the movable pulley 8, so that the winch with low tonnage can complete work on the bridge floor, the box girder top plate preformed hole 1-2 is used for fixing the winch, the large winch is not needed to be used in the existing integral penetrating work, the first fixed pulley 5 is fixed on the outer side of one end of the bridge 1 through the pulley frame 9, and the second fixed pulley 6 is fixed on the outer side of the other end of the bridge 4 through the concrete ground anchor 10.
The specific operation method comprises the following steps:
firstly, weaving a plurality of steel strands, fixing one ends of the plurality of steel strands together by using a hoop to form a whole bundle of steel strands 11, placing the whole bundle of steel strands on a bridge floor, penetrating a first steel strand 7 from one end of the bridge 1 to the other end by using a strand penetrating machine 4, connecting a steel wire rope of a first winch 2 with a penetrating end of the first steel strand 7 by winding a first fixed pulley 5, carrying back the steel wire rope of the first winch 2 to the penetrating end by using the capability of the strand penetrating machine 4 to return the steel strands, connecting the steel wire rope of a second winch 3 with the steel wire rope of the first winch 2 which is carried back by the second fixed pulley 6 and a movable pulley 8, pulling out the steel wire rope of the second winch 3 from the penetrating end by using the first winch 2, releasing the connection of the steel wire rope of the first winch 2 and the steel wire rope of the second winch 3 at the moment, and connecting the steel wire rope of the first winch 2 with a whole bundle of steel strand fixed end 11-1 of the first winch, the whole bundle of steel strands 11 is pulled to a penetrating end through a steel wire rope wound around the first fixed pulley 5, at the moment, the steel wire rope of the second winch 3 is connected with the fixed end 11-1 of the whole bundle of steel strands, the second winch 3 is started to pull out the whole bundle of steel strands 11 from the penetrating end through the bridge penetrating hole 1-1, and the whole penetrating of the long-distance steel strands is completed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The integral penetrating method of the long-distance steel strand is characterized by comprising the following specific steps:
firstly, weaving a plurality of steel strands, fixing one ends of the plurality of steel strands together by using a hoop to form a whole bundle of steel strands, placing the whole bundle of steel strands on a bridge floor, penetrating a first steel strand (7) from one end of the bridge (1) to the other end by using a strand penetrating machine (4), connecting a steel wire rope of a first winch (2) with a penetrating end of the first steel strand (7) by winding a first fixed pulley (5), returning the steel wire rope of the first winch (2) to the penetrating end by using the capability of the strand penetrating machine (4) to return the steel strands, connecting the steel wire rope of a second winch (3) with the steel wire rope of the first winch (2) which is returned by a second fixed pulley (6), pulling out the steel wire rope of the second winch (3) from the penetrating end by using the first winch (2), and releasing the connection of the steel wire rope of the first winch (2) and the steel wire rope of the second winch (3) at the moment, so that the steel wire rope of the first winch (2) is connected with the whole bundle of the steel strands, the whole bundle of steel strands is pulled to a penetrating end through a steel wire rope wound around a first fixed pulley (5), at the moment, the steel wire rope of a second winch (3) is connected with the fixed end of the whole bundle of steel strands, the second winch (3) is started to pull out the whole bundle of steel strands from the penetrating end through a bridge penetrating hole (1-1), and the whole penetrating of the long-distance steel strands is completed.
2. The integral penetrating method of the long-distance steel strand according to claim 1, characterized by comprising the following steps of: one end of the bridge (1) where the second winch (3) is located is further provided with a movable pulley (8), and a steel wire rope of the second winch (3) sequentially bypasses the second fixed pulley (6), the movable pulley (8) and the second fixed pulley (6) and then is fixedly connected with the end part of the first steel strand (7).
3. The integral penetrating device for the long-distance steel strand according to claim 1 or 2, is characterized in that: the first fixed pulley (5) is fixed on the outer side of one end of the bridge (1) through a pulley yoke (9), and the second fixed pulley (6) is fixed on the outer side of the other end of the bridge (4) through a concrete ground anchor (10).
4. The utility model provides a device is worn to restraint by whole of long distance steel strand which characterized in that: the steel wire rope winding machine comprises a first winch (2) and a second winch (3) which are arranged at two ends of a bridge (1) respectively, one end, where the second winch (3) is located, is provided with a beam penetrating machine (4) and a second fixed pulley (6), one end, where the first winch (2) is located, is also provided with a first fixed pulley (5), the first fixed pulley (5) and the second fixed pulley (6) are arranged on the outer side of the end portion of the bridge (1), a first steel wire rope (7) penetrates through the bridge through a beam penetrating hole (1-1) and extends to the other end of the bridge (1) through the beam penetrating machine (4), and steel wire ropes of the winches, located at the two ends of the bridge (1), wind around the first fixed pulley (5) and the second fixed pulley (6) respectively and are fixedly connected with the two ends of the first steel wire rope (7.
5. The integral long-distance steel strand pulling device according to claim 4, wherein: one end of the bridge (1) where the second winch (3) is located is further provided with a movable pulley (8), and a steel wire rope of the second winch (3) sequentially bypasses the second fixed pulley (6), the movable pulley (8) and the second fixed pulley (6) and then is fixedly connected with the end part of the first steel strand (7).
6. The integral long-distance steel strand pulling device according to claim 4 or 5, wherein: the first fixed pulley (5) and the second fixed pulley (6) are fixed on the outer sides of two ends of the bridge (4) through a pulley frame (9) or a concrete ground anchor (10).
7. The integral penetrating device for the long-distance steel strand according to claim 6, is characterized in that: the first fixed pulley (5) is fixed on the outer side of one end of the bridge (1) through a pulley yoke (9), and the second fixed pulley (6) is fixed on the outer side of the other end of the bridge (4) through a concrete ground anchor (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110372198.6A CN113073565A (en) | 2021-04-07 | 2021-04-07 | Long-distance steel strand integral penetrating device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110372198.6A CN113073565A (en) | 2021-04-07 | 2021-04-07 | Long-distance steel strand integral penetrating device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113073565A true CN113073565A (en) | 2021-07-06 |
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ID=76615340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110372198.6A Pending CN113073565A (en) | 2021-04-07 | 2021-04-07 | Long-distance steel strand integral penetrating device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113073565A (en) |
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2021
- 2021-04-07 CN CN202110372198.6A patent/CN113073565A/en active Pending
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