CN110745707A - Lifting device for dismantling fabricated support of concrete cast-in-place beam close to railway side - Google Patents
Lifting device for dismantling fabricated support of concrete cast-in-place beam close to railway side Download PDFInfo
- Publication number
- CN110745707A CN110745707A CN201911062138.3A CN201911062138A CN110745707A CN 110745707 A CN110745707 A CN 110745707A CN 201911062138 A CN201911062138 A CN 201911062138A CN 110745707 A CN110745707 A CN 110745707A
- Authority
- CN
- China
- Prior art keywords
- steel
- plate
- cast
- railway
- pulley
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C5/00—Base supporting structures with legs
- B66C5/02—Fixed or travelling bridges or gantries, i.e. elongated structures of inverted L or of inverted U shape or tripods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
- B66D3/06—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage with more than one pulley
-
- 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
Abstract
The invention discloses a lifting device for dismantling an assembled support of a concrete cast-in-place beam close to a railway side, which comprises a lifting mechanism arranged at the bottom of the cast-in-place beam after the assembled support is dismantled, the steel strand tension device comprises a first embedded steel plate and a second embedded steel plate which are positioned at the bottom of a beam, wherein a first fixing plate and a second fixing plate which extend downwards are welded on the first embedded steel plate and the second embedded steel plate correspondingly respectively, a steel strand in a tension state is arranged between the first embedded steel plate and the second embedded steel plate, a first fixed pulley and a second fixed pulley which are vertically arranged are arranged on the second fixing plate, the steel strand is arranged between the fixed pulleys, a single-wheel pulley is arranged on the steel strand in a sliding manner, a first traction steel cable connected with the single-wheel pulley is connected with the first winch by bypassing the first fixed pulley, a movable pulley block used for hoisting support parts is further connected below the single-wheel pulley, and a second steel cable connected with the movable pulley block is connected with the second winch by bypassing the second fixed pulley. The invention can accelerate the transportation speed of the parts after the support is disassembled and shorten the construction period of the bridge.
Description
Technical Field
The invention relates to the technical field of bridge support construction, in particular to a lifting device for dismantling an assembled support of a concrete cast-in-place beam close to a railway side.
Background
The construction of the cast-in-place box girder generally adopts bowl buckle type and disc buckle type full framing, the number of required framing is large, and the erection and disassembly speed is slow; secondly, when the beam body is high, the perpendicularity of the support is difficult to guarantee, so that the overall stability of the support is poor, and a large potential safety hazard exists during use; and thirdly, for the cast-in-place beam support erected near the railway, in order to meet the requirement of a crane station, a crane can only be arranged on one side of the cast-in-place beam, which is far away from the railway, when the support is disassembled, the crane large arm is difficult to extend into the position below the cast-in-place beam to lift a heavy object on the other side of the bridge, so that support parts on one side of the adjacent railway are difficult to smoothly transport out, the disassembly speed is reduced, the construction period is prolonged, and the construction is not facilitated.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides the lifting device which is simple in structure, easy to erect, safe and reliable and capable of accelerating the speed of dismounting and transporting the fabricated support of the concrete cast-in-place beam close to the side of the railway.
In order to achieve the purpose, the invention can adopt the following technical scheme:
the invention relates to a lifting device for dismantling an assembled support of a concrete cast-in-place beam close to a railway side, which comprises a lifting mechanism arranged at the bottom of the cast-in-place beam after the assembled support is dismantled; the hoisting mechanism comprises a first pre-buried steel plate and a second pre-buried steel plate which are arranged at the bottom of a cast-in-place beam, the first pre-buried steel plate is arranged at one side close to a railway, the second pre-buried steel plate is arranged at one side far away from the railway, a first fixed plate and a second fixed plate which extend downwards are welded on the first pre-buried steel plate and the second pre-buried steel plate correspondingly respectively, a steel strand in a tensioning state is arranged between the first fixed plate and the second fixed plate, a first fixed pulley and a second fixed pulley which are vertically arranged are arranged on the second fixed plate, the first fixed pulley and the second fixed pulley are respectively positioned at the upper side and the lower side of the steel strand, a single pulley is arranged on the steel strand in a sliding manner, a first traction steel cable connected with the single pulley is connected with a first winding machine by winding the first fixed pulley, and a movable pulley block used for hoisting support parts is further connected below, and a second steel rope connected with the movable pulley block bypasses the second fixed pulley and is connected with a second winch.
The movable pulley block comprises at least two-wheel/multi-wheel pulleys wound and connected through the second steel cable.
The assembled support comprises steel pipe columns with equal length and arranged on the ground, a horizontal main beam is arranged on the top surface of each steel pipe column, a distribution beam is arranged on each horizontal main beam, a full frame platform is arranged at the top of each distribution beam, and a full frame matched with the bottom line of a cast-in-place beam is arranged on each full frame platform
Every two rows of steel pipe columns are in one group, and each group of steel pipe columns are connected through a horizontal cross brace, a horizontal longitudinal brace and a diagonal bracing.
The steel pipe column is provided with a hoop, and a horizontal connecting plate or an inclined connecting plate is welded on the hoop; the two ends of the horizontal cross brace and the horizontal longitudinal brace are connected with the horizontal connecting plate in a screwed mode, and the two ends of the diagonal inclined brace are connected with the inclined connecting plate in a screwed mode.
The horizontal cross brace, the horizontal longitudinal brace and the diagonal brace are all composed of a plurality of sections of channel steel connected through clamping plates in a screwed mode.
The steel pipe column is formed by connecting a plurality of sections of steel pipes with flanges welded at the ends in a screwed mode, and the flanges located at the bottom of the steel pipe column are connected with the concrete foundation through deformed steel bars.
The hoisting device for dismantling the fabricated support of the concrete cast-in-place beam close to the railway side adopts the mobile trolley group hoisting mechanism which is arranged at the bottom of the cast-in-place beam along the bridge width direction after the fabricated support is dismantled, so that the support part close to the railway side can be smoothly transferred to the side of the bridge far away from the railway, and the transportation by a crane is convenient; simultaneously, the assembled support adopts the structure that steel-pipe column and full hall frame combine, can satisfy cast-in-place roof beam base line shape's needs, can guarantee the whole bearing capacity of support again, has security and suitability concurrently, and it compares with full hall support that all adopt bowl knot formula, dish knot formula, and the part totality quantity is few, and the dismouting of consequently being convenient for can accelerate the transportation speed of support dismantlement back spare part with the cooperation of handling mechanism, shortens the construction cycle of bridge.
Drawings
Fig. 1 is a schematic structural diagram of the lifting mechanism.
Fig. 2 is a schematic structural view of the fabricated stent of the present invention.
Fig. 3 is a cross-sectional view of fig. 2.
Fig. 4 is an enlarged view of the portion of the steel pipe string of fig. 3.
Fig. 5 is a sectional view taken along line I-I in fig. 4.
Fig. 6 is a schematic structural view of the hoop welded with the horizontal connecting plates in fig. 4.
Detailed Description
The invention relates to a lifting device for removing an assembled support of a concrete cast-in-place beam close to a railway side.
As shown in fig. 1, the hoisting mechanism comprises a first embedded steel plate 1A and a second embedded steel plate 2A which are arranged at the bottom of a cast-in-place beam M beam, the first embedded steel plate 1A is located near one side of a railway, the second embedded steel plate 2A is located far away from one side of the railway, the first embedded steel plate 1A and the second embedded steel plate 2A are correspondingly welded with a first fixing plate 3A and a second fixing plate 4A which extend downwards respectively, and a steel strand 5A penetrates between the first fixing plate 3A and the second fixing plate 4A and is tensioned and fixed. A first fixed pulley 6A and a second fixed pulley 7A which are vertically arranged are arranged on the second fixed plate 4A, the first fixed pulley 6A and the second fixed pulley 7A are respectively positioned at the upper side and the lower side of the steel strand 5A, a single-wheel hook pulley 8A is arranged on the steel strand 5A in a sliding manner, and a first traction steel cable 9A connected with the single-wheel hook pulley 8A is connected with a first winch 10A by bypassing the first fixed pulley 6A; a movable pulley block 11A for hoisting support parts is further connected below the single-wheel hook pulley 8A, the movable pulley block 11A can select two-wheel hook pulleys connected together in a winding manner through a second steel cable 12A, and the two-wheel hook pulleys are connected with the second steel cable 12A and connected with a second winch 13A in a winding manner through a second fixed pulley 7A.
As shown in fig. 2-6, the fabricated support comprises steel pipe columns 1B which are installed on the ground and have the same length, the top surfaces of the steel pipe columns 1B are flush, horizontal main beams 2B are erected on the steel pipe columns, distribution beams 3B are installed on the horizontal main beams 2B, full-hall frame platforms 4B are erected at the tops of the distribution beams 3B, and conventional bowl-buckled or disc-buckled full-hall frames 5B matched with the bottom line type of a cast-in-place beam M are erected on the full-hall frame platforms 4B. Above-mentioned structure through steel-pipe column and full hall frame combination had both reduced the quantity of support material, can satisfy cast-in-place roof beam line shape needs again, can also guarantee the whole bearing capacity of support simultaneously, had security and suitability concurrently.
Specifically, as shown in fig. 4, each steel pipe column 1B is formed by screwing a plurality of sections of steel pipes, both ends of which are welded with flanges 1.1B, and the flange 1.1B at the bottom of the steel pipe column 1B is connected with the concrete foundation N through deformed steel bars 1.2B. In order to strengthen the structural strength, every two rows of adjacent steel pipe columns 1B are connected into a group through horizontal cross braces 1.3B, horizontal longitudinal braces 1.4B and diagonal braces 1.5B.
In order to facilitate disassembly, the horizontal cross brace 1.3B, the horizontal longitudinal brace 1.4B and the diagonal brace 1.5B are all made of channel steel with a splicing structure. As shown in fig. 4 and 5, during assembly, the clamping plates 1.6B are respectively arranged on the inner surface and the outer surface of the bottom and the two side walls of the adjacent channel steel and then fixed through bolts 1.7B. And, install staple bolt 1.8B on steel-pipe column 1, weld horizontal connecting plate 1.9B (see fig. 6) or inclined connecting plate 1.10B on the outer wall of staple bolt 1.8B, horizontal stull 1.3B and horizontal stull 1.4B pass through the spiro union and are connected with steel-pipe column 1B spiro union on horizontal connecting plate 1.9B, diagonal brace 1.5B passes through the spiro union and connects with steel-pipe column 1B spiro union at inclined connecting plate 1.10B.
The steel pipe column part of the fabricated bracket is completely fabricated by fabricated parts, so that the fabricated bracket is convenient to disassemble, assemble and transport, and the turnover utilization rate of parts is high; compared with the full-hall support adopting the bowl buckle type and the disc buckle type, the total using amount of parts is less, the dismounting speed can be accelerated, and the transportation of the parts after the support is dismounted on one side close to the railway is convenient.
During construction, firstly installing a steel pipe column 1B on a concrete foundation N, connecting and grouping the steel pipe column 1B through a horizontal cross brace 1.3B, a horizontal longitudinal brace 1.4B and a diagonal brace 1.5B, and then sequentially installing a horizontal main beam 2B, a distribution beam 3B, a full hall frame platform 4B and a conventional bowl buckle type or disc buckle type full hall frame 5B on the top of the steel pipe column, so as to finish the construction of the assembly type support; then, carrying out conventional construction of a cast-in-place beam M, such as template installation, reinforced bar bound concrete pouring, tensioning and grouting, template removal and the like, wherein before pouring, a first embedded steel plate 1A is installed on the side, close to the railway, of a beam bottom plate of the cast-in-place beam M, and a second embedded steel plate 2A is installed on the side, far away from the railway, of the beam bottom plate of the cast-in-place beam M; then, after the construction of the cast-in-place beam M is completed, the assembly type support is dismantled; then, correspondingly welding a first fixed plate 3A and a second fixed plate 4A on the first embedded steel plate 1A and the second embedded steel plate 2A respectively, pulling a steel strand 5A between the first fixed plate 3A and the second fixed plate 4A, installing a first fixed pulley 6A and a second fixed pulley 7A on the second fixed plate 4A, then combining a single-wheel hook pulley 8A and a movable pulley block 11A in place, and correspondingly connecting a first pulling steel cable 9A and a second steel cable 12A on a first winch 10A and a second winch 13A respectively to finish the installation of the hoisting mechanism; and finally, hoisting and conveying the support parts on one side close to the railway after being dismantled to the air and ground on one side far away from the railway in batches through the pulley block, hoisting the support parts through other hoisting machines such as a crane and the like, loading and conveying the support parts away.
Claims (7)
1. The utility model provides a overhead hoist for demolising close to cast-in-place roof beam assembled support of railway side concrete which characterized in that: the lifting mechanism is arranged at the bottom of a cast-in-place beam after the assembled support is removed; the hoisting mechanism comprises a first pre-buried steel plate and a second pre-buried steel plate which are arranged at the bottom of a cast-in-place beam, the first pre-buried steel plate is arranged at one side close to a railway, the second pre-buried steel plate is arranged at one side far away from the railway, a first fixed plate and a second fixed plate which extend downwards are welded on the first pre-buried steel plate and the second pre-buried steel plate correspondingly respectively, a steel strand in a tensioning state is arranged between the first fixed plate and the second fixed plate, a first fixed pulley and a second fixed pulley which are vertically arranged are arranged on the second fixed plate, the first fixed pulley and the second fixed pulley are respectively positioned at the upper side and the lower side of the steel strand, a single pulley is arranged on the steel strand in a sliding manner, a first traction steel cable connected with the single pulley is connected with a first winding machine by winding the first fixed pulley, and a movable pulley block used for hoisting support parts is further connected below, and a second steel rope connected with the movable pulley block bypasses the second fixed pulley and is connected with a second winch.
2. The hoisting device for dismantling the fabricated bracket of the concrete cast-in-place beam adjacent to the railway side as claimed in claim 1, which is characterized in that: the movable pulley block comprises at least two-wheel/multi-wheel pulleys wound and connected through the second steel cable.
3. The hoisting device for dismantling the fabricated bracket of the concrete cast-in-place beam adjacent to the railway side as claimed in claim 1, which is characterized in that: the assembled support comprises steel pipe columns with equal lengths arranged on the ground, a horizontal main beam is erected on the top surface of each steel pipe column, a distribution beam is arranged on each horizontal main beam, a full-frame platform is arranged at the top of each distribution beam, and a full-frame matched with the bottom line of a cast-in-place beam is arranged on each full-frame platform.
4. The hoisting device for dismantling the fabricated supports of the concrete cast-in-place beams close to the railway side as claimed in claim 3, wherein: every two rows of steel pipe columns are in one group, and each group of steel pipe columns are connected through a horizontal cross brace, a horizontal longitudinal brace and a diagonal bracing.
5. The hoisting device for dismantling the fabricated supports of the concrete cast-in-place beams close to the railway side as claimed in claim 4, wherein: the steel pipe column is provided with a hoop, and a horizontal connecting plate or an inclined connecting plate is welded on the hoop; the two ends of the horizontal cross brace and the horizontal longitudinal brace are connected with the horizontal connecting plate in a screwed mode, and the two ends of the diagonal inclined brace are connected with the inclined connecting plate in a screwed mode.
6. The hoisting device for dismantling the fabricated supports of the concrete cast-in-place beams close to the railway side as claimed in claim 5, wherein: the horizontal cross brace, the horizontal longitudinal brace and the diagonal brace are all composed of a plurality of sections of channel steel connected through clamping plates in a screwed mode.
7. The hoisting device for dismantling the fabricated supports of the concrete cast-in-place beams close to the railway side as claimed in claim 3, wherein: the steel pipe column is formed by connecting a plurality of sections of steel pipes with flanges welded at the ends in a screwed mode, and the flanges located at the bottom of the steel pipe column are connected with the concrete foundation through deformed steel bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911062138.3A CN110745707B (en) | 2019-11-02 | 2019-11-02 | Lifting device for dismantling fabricated support of concrete cast-in-place beam close to railway side |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911062138.3A CN110745707B (en) | 2019-11-02 | 2019-11-02 | Lifting device for dismantling fabricated support of concrete cast-in-place beam close to railway side |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110745707A true CN110745707A (en) | 2020-02-04 |
| CN110745707B CN110745707B (en) | 2020-10-09 |
Family
ID=69281930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911062138.3A Active CN110745707B (en) | 2019-11-02 | 2019-11-02 | Lifting device for dismantling fabricated support of concrete cast-in-place beam close to railway side |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110745707B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113818354A (en) * | 2021-09-29 | 2021-12-21 | 中交第二航务工程局有限公司 | Method for quickly dismantling temporary support under condition of limited vertical space |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6339515B2 (en) * | 1983-07-08 | 1988-08-05 | Yokokawa Koji Kk | |
| CN202247687U (en) * | 2011-09-19 | 2012-05-30 | 曹新恒 | Universal cast-in-situ trestle for bridge |
| CN102864746A (en) * | 2012-09-18 | 2013-01-09 | 浙江国盛钢结构有限公司 | Bearing frame for bridge construction |
| CN202988602U (en) * | 2012-10-31 | 2013-06-12 | 晋江市先锋机械制造有限公司 | Hawser type derrick crane |
| CN104495632A (en) * | 2014-12-22 | 2015-04-08 | 安徽伟宏钢结构集团股份有限公司 | Expanded type suspension rope lifting and hoisting system |
-
2019
- 2019-11-02 CN CN201911062138.3A patent/CN110745707B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6339515B2 (en) * | 1983-07-08 | 1988-08-05 | Yokokawa Koji Kk | |
| CN202247687U (en) * | 2011-09-19 | 2012-05-30 | 曹新恒 | Universal cast-in-situ trestle for bridge |
| CN102864746A (en) * | 2012-09-18 | 2013-01-09 | 浙江国盛钢结构有限公司 | Bearing frame for bridge construction |
| CN202988602U (en) * | 2012-10-31 | 2013-06-12 | 晋江市先锋机械制造有限公司 | Hawser type derrick crane |
| CN104495632A (en) * | 2014-12-22 | 2015-04-08 | 安徽伟宏钢结构集团股份有限公司 | Expanded type suspension rope lifting and hoisting system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113818354A (en) * | 2021-09-29 | 2021-12-21 | 中交第二航务工程局有限公司 | Method for quickly dismantling temporary support under condition of limited vertical space |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110745707B (en) | 2020-10-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2008274637A (en) | Construction method for continuous viaduct | |
| CN110409319B (en) | Bracket for large-span steel-concrete composite beam cast-in-place bridge deck and construction method | |
| CN110067201A (en) | A kind of movable type tensioning platform and its application method | |
| CN113585075A (en) | Cast-in-place bridge deck formwork for steel-concrete composite beam | |
| CN110409318B (en) | Assembling and erecting method for large-span simply-supported steel-concrete composite beam | |
| CN110745707B (en) | Lifting device for dismantling fabricated support of concrete cast-in-place beam close to railway side | |
| CN110820602A (en) | Single-segment box girder bridge girder erection machine and operation method thereof | |
| CN112160246B (en) | Method for installing composite beam | |
| JP2001214414A (en) | Method for constructing pc box girder using outside cable | |
| CN216891994U (en) | Three-span cable crane for mounting main beam of cable-stayed bridge | |
| JP4489872B2 (en) | Bridge erection method and apparatus | |
| CN112627043A (en) | Installation device and method for composite cable saddle of narrow cavern of suspension bridge in mountainous area | |
| CN205500636U (en) | Water conservancy project component handling device | |
| CN114108446A (en) | High-speed railway stay cable bridge structure and construction method | |
| CN111455854B (en) | Semi-automatic protective shed frame used in construction of viaduct crossing railway and erection method | |
| CN210797285U (en) | Dual-purpose device used as pier column template and prestress support | |
| CN113308997A (en) | Three-span cable crane for mounting main beam of cable-stayed bridge and construction method thereof | |
| CN210395127U (en) | Assembled Bailey beam hanging basket upper walking system | |
| CN112627882A (en) | Transfer machine tool for large shield tunnel mid-partition and mounting method | |
| CN217102749U (en) | Roof large-scale steel beam sliding system | |
| CN214143337U (en) | Installation device of composite cable saddle of narrow cavern of mountain suspension bridge | |
| CN111648313A (en) | Bailey beam dismantling and transporting device and construction method applying same | |
| CN215629393U (en) | Bailey beam dismantling and transporting device | |
| CN216764103U (en) | Hoisting portal frame for roller type combined cable saddle | |
| CN217104777U (en) | Interim landing stage demolishs device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |