CN213358342U - Hanging basket system for synchronous bearing construction of corrugated steel web - Google Patents
Hanging basket system for synchronous bearing construction of corrugated steel web Download PDFInfo
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- CN213358342U CN213358342U CN202021903615.2U CN202021903615U CN213358342U CN 213358342 U CN213358342 U CN 213358342U CN 202021903615 U CN202021903615 U CN 202021903615U CN 213358342 U CN213358342 U CN 213358342U
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Abstract
The utility model discloses a synchronous construction of wave form steel web bearing hangs basket system, including hanging basket mechanism, horizontal migration track, cooperate and follow the orbital length direction of horizontal migration moving body, be connected with the moving body and lift by crane the mechanism, with the front side fixed connection's of hanging basket mechanism propulsion system with the moving body, hang basket mechanism and include two main trusses, the preceding entablature of being connected with two main trusses, make main truss and preceding entablature respectively with the guide beam with the bottom plate be connected hang the mechanism, be used for supporting main truss and building material's bearing frame, with main truss fixed connection's preceding landing leg and back landing leg, the utility model discloses thoroughly update construction process, optimize the atress of original hanging basket, improved the factor of safety of hanging basket, improved the working face of dispersion, alleviate intensity of labour, use manpower sparingly, reduce construction cost, The construction quality is improved, the construction speed is accelerated, and the like.
Description
Technical Field
The utility model relates to a bridge construction technical field, concretely relates to synchronous construction of wave form steel web bearing hangs basket system.
Background
The corrugated steel web PC combined box girder bridge is a combined structure formed by a prestressed concrete top plate, a corrugated steel web and a concrete bottom plate, has a series of advantages of self weight reduction, good earthquake resistance, simple and convenient construction, good economy and the like, and along with the development of theory and practical application, the number of the corrugated steel web prestressed concrete box girder bridges built in China is increased year by year.
The corrugated steel web PC combined box girder bridge can adopt various construction methods similar to common concrete bridges, such as support cast-in-place construction, movable formwork hole-by-hole cast-in-place construction, prefabricated installation, cantilever pouring, pushing construction and the like. For places with great span and difficulty in erecting the supports under the corrugated steel web PC combined box girder bridge or the bridge, the cantilever construction method is usually adopted for construction.
The hanging basket that corrugated steel web PC combination box girder bridge cantilever was pour and is adopted mainly has two types at present: one type is a common hanging basket, such as a rhombic hanging basket, a triangular hanging basket and the like, is provided with a rear anchoring point and moves forwards through a track arranged on a poured concrete top plate; the asynchronous construction hanging basket uses a corrugated steel web as a bearing, staggered construction is carried out on the corrugated steel web, top plate construction and bottom plate construction which belong to the same original working surface, and the staggered construction is also called as an asynchronous staggered construction method, and in the original construction process, the common hanging basket has the defects of wide use, simple structure, requirement of independent stress of a rear anchor, forward movement of a track in the aid of propulsion operation, large safety risk in the propulsion process, centralized working surface and large steel consumption; the asynchronous cradle has the advantages of simple stress, no back anchor, bearing by means of a corrugated steel web, and forward sliding of the cradle by means of support legs placed in a double-PBL key of the steel web. The working face is dispersed, the structure is light, the steel consumption is little characteristics, but asynchronous string basket needs the top bottom plate dislocation construction and asynchronous pouring, and the construction cycle is long.
Therefore, the load of the construction of the hanging basket is dispersed to two aspects, one part of the load is transmitted to the poured segment by the rear supporting leg, and the other part of the load is transmitted to the corrugated steel web plate of the segment to be poured by the front supporting leg; meanwhile, the staggered construction of the asynchronously poured top and bottom plates is integrated into a corrugated steel web bearing synchronous construction hanging basket system for synchronous construction of the top and bottom plates, which is a problem worthy of research.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide a method for dispersing the load of cradle construction to two aspects, wherein one part is transmitted to a poured segment by a rear supporting leg, and the other part is transmitted to a corrugated steel web plate of a section to be poured by a front supporting leg; and simultaneously, the top and bottom plate staggered construction of asynchronous pouring is integrated into a corrugated steel web bearing synchronous construction hanging basket system for top and bottom plate synchronous construction.
The purpose of the utility model is realized like this:
a corrugated steel web bearing synchronous construction hanging basket system comprises a hanging basket mechanism, a horizontal moving track which is fixedly connected with the front side of the hanging basket mechanism and arranged along the direction of a bridge, a moving body which is matched with the horizontal moving track and moves along the length direction of the horizontal moving track, a hoisting mechanism which is connected with the moving body and used for hoisting building materials, and a propulsion system which is fixedly connected with the front side of the hanging basket mechanism, wherein the hanging basket mechanism comprises two main trusses, a front upper cross beam which is connected with the two main trusses, a hoisting mechanism which enables the main trusses and the front upper cross beam to be respectively connected with a guide beam and a bottom plate, a bearing frame which is used for supporting the main trusses and the building materials, a front supporting leg and a rear supporting leg which are fixedly connected with the main trusses, and the bearing frame comprises a supporting column which is positioned in the vertical direction and fixedly connected with the horizontal moving track, an inclined supporting rod which is connected with the top, the bottom of the inclined supporting rod is fixedly connected with the upper surface of the horizontal moving track.
The rear supporting legs are located at the tops of the poured sections through the propulsion systems and connected with the poured concrete top plate through the anchoring systems, and the bottoms of the front supporting legs are located in the double PLB key slots of the installed corrugated steel webs.
The propulsion system comprises a track, a propulsion oil cylinder, a rear support leg sliding shoe and an oil cylinder rear support, wherein the rear support leg is connected with the track through the rear support leg sliding shoe, and the propulsion oil cylinder is connected with the track and the rear support leg through the oil cylinder rear support and the rear support leg sliding shoe respectively; the track is connected with the concrete top plate through an anchoring point pre-embedded in the top plate in advance; the propulsion oil cylinder transmits horizontal thrust to the main truss and the front supporting leg through the rear supporting leg.
The hanging mechanism comprises a bottom plate front hanging strip, a bottom plate rear hanging strip, a wing plate front hanging strip, a wing plate rear hanging strip and an inner hanging strip.
The bottom plate is provided with a bottom front cross beam and a bottom rear cross beam which are used for bearing, the bottom front cross beam is fixed with the front upper cross beam through a bottom plate front sling, the bottom rear cross beam is fixed with poured concrete through a bottom plate rear sling, and the front end of the box chamber inner template is fixed on the front upper cross beam through an inner sling.
Has the positive and beneficial effects that: the utility model solves the stability problem that the asynchronous cradle has no rear anchor and completely depends on the bearing of the corrugated steel web; load transmission of the front supporting leg and the rear supporting leg is dispersed, one part of the load is transmitted to the poured segment by the rear supporting leg, and the other part of the load is transmitted to the corrugated steel web of the segment to be poured by the front supporting leg, so that the stress of the hanging basket is more definite and reasonable; meanwhile, the top and bottom plate staggered construction of asynchronous pouring is integrated into top and bottom plate synchronous construction, so that the problem of dispersion of a working surface is solved; the steel web working procedure is separated independently, so that the installation of the steel web can be carried out in the whole time without occupying the cycle time of the cradle. The installation speed of the corrugated steel web is accelerated, the construction efficiency is greatly improved, and the construction period is effectively shortened; in the construction of the corrugated steel web PC bridge cantilever, the construction process is thoroughly updated, the stress of the original cradle is optimized, the safety coefficient of the cradle is improved, the dispersed working surface is improved, and the construction method plays an important role in reducing labor intensity, saving manpower, reducing construction cost, improving construction quality, accelerating construction speed and the like.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view taken along the line A-A;
FIG. 3 is a cross-sectional view taken along the line B-B;
FIG. 4 is an enlarged schematic view of part C;
in the figure, the following steps are carried out: the device comprises a propulsion system 1, a bottom plate 2, a guide beam 3, a main truss 4, a front upper cross beam 5, a horizontal moving track 6, a moving body 7, a hoisting mechanism 8, a bearing frame 9, a bottom front cross beam 10, a bottom rear cross beam 11, a support leg stabilizing rod 12, a support column 13, a diagonal brace 14, a connecting rod 15, a bottom plate front hanging strip 16, a bottom plate rear hanging strip 17, a wing plate front hanging strip 18, a wing plate rear hanging strip 19, an inner hanging strip 20, a front support leg 21, a rear support leg 22, a hanging basket moving track 23, a propulsion oil cylinder 24, a rear support leg sliding shoe 25 and an oil cylinder rear support 26.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 1 to 4, the corrugated steel web bearing synchronous construction hanging basket system comprises a hanging basket mechanism, a horizontal moving rail 6 which is fixedly connected with the front side of the hanging basket mechanism and is arranged along the direction of the bridge, a moving body 7 which is matched with the horizontal moving rail 6 and moves along the length direction of the horizontal moving rail 6, a hoisting mechanism 8 which is connected with the moving body 7 and is used for hoisting building materials, and a propulsion system 1 which is fixedly connected with the front side of the hanging basket mechanism.
The hanging basket mechanism comprises two main trusses 4, a front upper cross beam 5 connected with the two main trusses 4, a hanging mechanism enabling the main trusses 4 and the front upper cross beam 5 to be respectively connected with a guide beam 3 and a bottom plate 2, a bearing frame 9 used for supporting the main trusses 4 and building materials, a front supporting leg 21 and a rear supporting leg 22 fixedly connected with the main trusses, the main trusses 4 and the front upper cross beam 5 are fixedly connected into a whole through flanges and bolts, firmness is good, the main trusses 4 are connected with a propulsion system through the rear supporting legs, the propulsion system is anchored through rear anchors pre-buried on an N-1 section concrete top plate in advance, and the rear anchors adopt phi 32 finish rolling threaded steel bars. The embedded concrete part is connected with the top plate steel bar through the steel gasket and the bolt, so that the embedded concrete part becomes a whole body to increase the anchoring force.
The bearing frame 9 comprises support columns 13 which are located in the vertical direction and fixedly connected with the horizontal moving track, inclined support rods 14 connected with the tops of the support columns 13 and connecting rods 15 connected between the support columns 13, the bottoms of the inclined support rods 14 are fixedly connected with the upper surface of the horizontal moving track 6, two support columns 13 and two inclined support rods 14 are arranged on one horizontal moving track 6, the two inclined support rods 14 are respectively fixed with the tops of the two support columns 13, the bottoms of the two inclined support rods 14 are fixedly welded with the upper surface of the horizontal moving track 6, the bearing frame 9 is of a triangular structure when viewed from the side, and the bearing frame 9 mainly bears loads transmitted by overhanging parts of the horizontal moving track 6. And is connected with the top of the horizontal moving track 6 by welding or flange plate. The left side and the right side of the bearing frame 9 are stabilized by a connecting rod 15 made of section steel.
The two horizontal moving rails 6 are arranged in parallel, the front end of each horizontal moving rail 6 is positioned at the front end of the front upper cross beam 5, the tail part of each horizontal moving rail 6 is fixedly connected with the main truss 4 through a connecting piece, the top part of each horizontal moving rail 6 is fixedly connected with the main truss 4 and the support column 13 through the inclined support rod 14, the horizontal moving rails 6 are arranged in the horizontal direction, the horizontal moving rails 6 are arranged in the bridge direction and are arranged at the inner sides of the left main truss 4 and the right main truss 4 and below the front upper cross beam 5, the moving body 7 and the hoisting mechanism 8 are customized according to the required hoisting capacity and moving conditions and are customized from a professional manufacturer, the horizontal moving rails and the lifting mechanism can be mechanically connected into a whole, the moving body 7 is provided with a power-off brake device, the horizontal moving rails 6 are downward in opening, the moving body 7 is positioned on the lower surface of the horizontal moving rails 6 and moves along, the hoisting mechanism 8 can be an electric hoist, and the moving body 7 can be a traveling motor.
The rear legs 22 are located at the top of the poured section by a propulsion system and are connected to the top poured concrete slab by an anchoring system, the bottom of the front legs 21 are located in the double PLB keyways of the installed corrugated steel webs, and together with the rear legs 22, bear the weight transferred from the bottom slab by the braces through the main truss 4.
The propulsion system comprises a track 23, a propulsion oil cylinder 24, a rear support sliding shoe 25 and an oil cylinder rear support 26, wherein the rear support 22 is connected with the track 23 through the rear support sliding shoe 25, and the propulsion oil cylinder 24 is connected with the track and the rear support through the oil cylinder rear support 26 and the rear support sliding shoe 25 respectively. The track is connected with the concrete top plate through an anchoring point pre-buried in the top plate in advance. The thrust cylinders 24 transmit the horizontal thrust to the main girder 4 and the front legs 21 through the rear legs 22.
The hanging mechanism comprises a bottom plate front hanging strip 16, a bottom plate rear hanging strip 17, a wing plate front hanging strip 18, a wing plate rear hanging strip 19 and an inner hanging strip 20. The bottom plate 2 is provided with a bottom front cross beam 10 and a bottom rear cross beam 11 for bearing, the bottom front cross beam 10 is fixed with a front upper cross beam 5 through a bottom plate front sling 16, the bottom rear cross beam 11 is fixed with poured concrete through a bottom plate rear sling 17, the front end of a box indoor template is fixed on the front upper cross beam 5 through an inner sling 20, a hanging system sling can adopt finish-rolling threads and also can adopt a steel plate as a bearing material, but stress calculation is needed before use, the bottom rear cross beam 11 and the bottom front cross beam 10 are used as a bearing structure of the bottom plate 2 and are fixed on the front upper cross beam 5 through the bottom plate front sling 16, and the bottom rear sling 17 is fixed on the poured concrete. A floor rear strap 17 is anchored to the flange plate and to the floor 2. In the pouring process, pore channels are pre-buried in advance on the flange plates and the bottom plate 2 through calculation so that hanging strips 17 can pass through, the front end of a box chamber inner template is fixed on the front upper cross beam 5 through the inner hanging strips 20, the rear end of the box chamber inner template is fixed on a poured upper section concrete top plate, the anchoring method is the same as that of the bottom plate rear hanging strips 17, the front end of the flange plate template is anchored with the front upper cross beam 5 through the flange plate front hanging strips 18, and the rear end of the flange plate template is anchored on a flange plate of the previous section through the flange plate rear hanging strips 19 by using a method of pre-burying holes of the.
The concrete construction sequence of the corrugated steel web PC combined box girder bridge is as follows: 1. installing a No. 1 segment steel web → 2 by using a tower crane, constructing a No. 1 segment of a pier top 0 segment → 3 by using the tower crane, installing a No. 2 segment steel web → 4 by using the tower crane, constructing No. 2 segment concrete → 5, installing a basket hanging mechanism 1, a horizontal moving track 6, a moving body 7 and a hoisting mechanism 8 → 6 by using the horizontal moving track 6, the moving body 7 and the hoisting mechanism 8, installing a No. 3 segment steel web → 7 by using the basket hanging mechanism 1, and constructing a No. 3 segment → repeating the No. 6 and the No. 7 steps until the folding; the method comprises the following specific steps: 1. installing a No. 1 segment steel web by using a tower crane: transporting the 1# section steel web to the side of a tower crane through a transport vehicle, and installing the 1# steel web in place through the tower crane; 2. constructing a pier top 0# block and a pier top 1# block: constructing steel bars and other embedded parts on the platform after the steel web plates are installed, constructing concrete, and completing tensioning after the strength of the concrete is increased; 3. installing 2# section steel web: transporting the 2# section steel web to the side of a tower crane through a transport vehicle, hoisting the 2# section steel web in place, completing installation, and connecting the 2# section steel web with the 1# section steel web; 4. construction of 2# section concrete: and (4) performing concrete pouring after finishing the work of reinforcing steel bars, prestressed ribs, pore channels, embedded parts of the hanging basket rear anchors and the like. Then maintaining and tensioning; 5. installing a hanging basket mechanism 1, a horizontal moving track 6, a moving body 7 and a hoisting mechanism 8: the installation of the basket hanging mechanism 1, the horizontal moving track 6, the moving body 7 and the hoisting mechanism 8 is completed through a tower crane; 6. installing a No. 3 steel web plate by utilizing the horizontal moving track 6, the moving body 7 and the hoisting mechanism 8: transporting the steel web plate to the lower part of the section to be installed through transportation equipment, and installing and positioning through a hoisting mechanism 8; 7. constructing 3# segment by using a hanging basket mechanism: using the hanging basket as a construction platform to carry out subsequent segment construction; and (5) repeating the method of the steps 6-7 to complete the installation of the subsequent steel web plate until the whole construction is completed.
The utility model solves the stability problem that the asynchronous cradle has no rear anchor and completely depends on the bearing of the corrugated steel web; load transmission of the front supporting leg and the rear supporting leg is dispersed, one part of the load is transmitted to the poured segment by the rear supporting leg, and the other part of the load is transmitted to the corrugated steel web of the segment to be poured by the front supporting leg, so that the stress of the hanging basket is more definite and reasonable; meanwhile, the top and bottom plate staggered construction of asynchronous pouring is integrated into top and bottom plate synchronous construction, so that the problem of dispersion of a working surface is solved; the steel web working procedure is separated independently, so that the installation of the steel web can be carried out in the whole time without occupying the cycle time of the cradle. The installation speed of the corrugated steel web is accelerated, the construction efficiency is greatly improved, and the construction period is effectively shortened; in the construction of the corrugated steel web PC bridge cantilever, the construction process is thoroughly updated, the stress of the original cradle is optimized, the safety coefficient of the cradle is improved, the dispersed working surface is improved, and the construction method plays an important role in reducing labor intensity, saving manpower, reducing construction cost, improving construction quality, accelerating construction speed and the like.
Claims (5)
1. The utility model provides a synchronous construction of wave form steel web bearing hangs basket system, includes hang basket mechanism, with hang the front side fixed connection of basket mechanism and along the horizontal migration track that sets up along the direction of bridge, with horizontal migration track match and along the orbital length direction of horizontal migration removal the moving body, be connected with the moving body and be used for lifting by crane building material the mechanism, with hang the front side fixed connection's of basket mechanism propulsion system, its characterized in that: the hanging basket mechanism comprises two main trusses, a front upper cross beam connected with the two main trusses, a hanging mechanism enabling the main trusses and the front upper cross beam to be connected with a guide beam and a bottom plate respectively, a bearing frame used for supporting the main trusses and building materials, a front supporting leg and a rear supporting leg fixedly connected with the main trusses, wherein the bearing frame comprises a supporting column which is located in the vertical direction and fixedly connected with a horizontal moving track, an inclined supporting rod connected with the top of the supporting column and a connecting rod connected between the supporting columns, and the bottom of the inclined supporting rod is fixedly connected with the upper surface of the horizontal moving track.
2. The corrugated steel web load-bearing synchronous construction hanging basket system according to claim 1, characterized in that: the rear supporting legs are located at the tops of the poured sections through the propulsion systems and connected with the poured concrete top plate through the anchoring systems, and the bottoms of the front supporting legs are located in the double PLB key slots of the installed corrugated steel webs.
3. The corrugated steel web load-bearing synchronous construction hanging basket system according to claim 2, characterized in that: the propulsion system comprises a track, a propulsion oil cylinder, a rear support leg sliding shoe and an oil cylinder rear support, wherein the rear support leg is connected with the track through the rear support leg sliding shoe, and the propulsion oil cylinder is connected with the track and the rear support leg through the oil cylinder rear support and the rear support leg sliding shoe respectively; the track is connected with the concrete top plate through an anchoring point pre-embedded in the top plate in advance; the propulsion oil cylinder transmits horizontal thrust to the main truss and the front supporting leg through the rear supporting leg.
4. The corrugated steel web load-bearing synchronous construction hanging basket system according to claim 1, characterized in that: the hanging mechanism comprises a bottom plate front hanging strip, a bottom plate rear hanging strip, a wing plate front hanging strip, a wing plate rear hanging strip and an inner hanging strip.
5. The corrugated steel web load-bearing synchronous construction hanging basket system according to claim 4, wherein: the bottom plate is provided with a bottom front cross beam and a bottom rear cross beam which are used for bearing, the bottom front cross beam is fixed with the front upper cross beam through a bottom plate front sling, the bottom rear cross beam is fixed with poured concrete through a bottom plate rear sling, and the front end of the box chamber inner template is fixed on the front upper cross beam through an inner sling.
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| CN202021903615.2U CN213358342U (en) | 2020-09-03 | 2020-09-03 | Hanging basket system for synchronous bearing construction of corrugated steel web |
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| CN202021903615.2U CN213358342U (en) | 2020-09-03 | 2020-09-03 | Hanging basket system for synchronous bearing construction of corrugated steel web |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114214968A (en) * | 2021-12-15 | 2022-03-22 | 中建七局安装工程有限公司 | Bridge No. 0 block bottom plate dismantling-free construction method |
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2020
- 2020-09-03 CN CN202021903615.2U patent/CN213358342U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114214968A (en) * | 2021-12-15 | 2022-03-22 | 中建七局安装工程有限公司 | Bridge No. 0 block bottom plate dismantling-free construction method |
| CN114214968B (en) * | 2021-12-15 | 2023-05-12 | 中建七局安装工程有限公司 | Bridge No. 0 block bottom plate dismantling-free construction method |
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