CN110387824B - Cable tower creeping formwork aerial rail transfer construction method - Google Patents
Cable tower creeping formwork aerial rail transfer construction method Download PDFInfo
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- CN110387824B CN110387824B CN201910628854.7A CN201910628854A CN110387824B CN 110387824 B CN110387824 B CN 110387824B CN 201910628854 A CN201910628854 A CN 201910628854A CN 110387824 B CN110387824 B CN 110387824B
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
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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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Abstract
The invention relates to the technical field of building construction, in particular to a cable tower creeping formwork aerial rail transfer construction method. When the climbing formwork frame body travels to the cable tower to be subjected to orbital transfer area, the temporary support frame is installed on the outer side of the cable tower, the weight of the climbing formwork frame body is transferred to the temporary support frame from the bearing frame, then the bearing frame is detached from the original track on the side portion of the cable tower, the detached bearing frame is installed at the orbital transfer position, the weight of the climbing formwork frame body is transferred to the bearing frame, then the temporary support frame is detached, and the orbital transfer track penetrates through the orbital transfer track again to complete orbital transfer construction. The rail transfer method is simple, convenient and safe, reduces hoisting procedures and aerial operation, greatly simplifies the climbing formwork rail transfer procedures, and has popularization value.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a cable tower creeping formwork aerial rail transfer construction method.
Background
The climbing formwork is a tower column construction device which utilizes a climbing system to automatically climb a frame body and a template to a next construction section. Including whole support body, the template is fixed on the support body, and the support body supports on the bearing frame, and the bearing frame anchor is on the concrete of pouring the completion, realizes climbing of whole creeping formwork through marching type jacking structure. With the development of building structure technology, pouring main body structures are more and more complex, for example, in the case of cable tower pouring construction, the height of a cable tower needs to be considered and decorative strips need to be avoided in the cable tower pouring process, so that in the jacking moving process of a creeping formwork, rails cannot be arranged along a straight line, and in the middle pouring process, the rails need to be changed in track to avoid the decorative strips or other structures on the cable tower. The traditional rail-changing construction method is to dismantle and hoist the creeping formwork to the ground, and then hoist the creeping formwork to a cable tower for installation after rail changing on the ground is finished. The rail transfer method has the disadvantages of high risk of high-altitude operation and long construction period.
Disclosure of Invention
The invention aims to solve the defects of the background technology and provide a cable tower creeping formwork aerial rail transfer construction method.
The technical scheme of the invention is as follows: a cable tower creeping formwork aerial rail transfer construction method is characterized in that: when the climbing formwork frame body travels to the cable tower to be subjected to orbital transfer area, the temporary support frame is installed on the outer side of the cable tower, the weight of the climbing formwork frame body is transferred to the temporary support frame from the bearing frame, then the bearing frame is detached from the original track on the side portion of the cable tower, the detached bearing frame is installed at the orbital transfer position, the weight of the climbing formwork frame body is transferred to the bearing frame, then the temporary support frame is detached, and the orbital transfer track penetrates through the orbital transfer track again to complete orbital transfer construction.
The method for installing the temporary support frame on the outer side of the cable tower comprises the following steps: the temporary support frame is processed according to a design drawing, a bearing lug plate is installed at the outer side of the cable tower corresponding to the upper supporting point of the temporary support frame, a bearing pin is arranged on the upper supporting point of the temporary support frame in a penetrating mode and is fixed on the bearing lug plate for bearing when the temporary support frame is replaced, and a supporting foot is installed at the lower end position, connected with the cable tower, of the temporary support frame and used for adjusting the inclination of the temporary support frame.
The method for installing the bearing lug plate at the upper supporting point corresponding to the temporary supporting frame on the outer side of the cable tower comprises the following steps: processing the bearing lug plate according to a design drawing, embedding a climbing cone for the bearing lug plate at a position 50cm away from the designed position of the orbital transfer track before pouring, and screwing in a bolt after removing a mold to fix the bearing lug plate on the climbing cone.
The further method for dismantling the bearing frame comprises the following steps: and (3) dismantling the original track, dismantling an anchor plate and climbing boots connected with the bearing frame and the original track, tying the anchor plate and the climbing boots together, dismantling bolts on the anchor plate, then putting the anchor plate and the bearing frame together onto a creeping formwork frame body, and dismantling the bearing frame and high-strength bolts of the distribution beam to complete the dismantling work of the bearing frame.
The further method for transferring the disassembled bearing frame to the orbital transfer track comprises the following steps: and a chain block is arranged on the climbing formwork frame body, and the bearing frame is hoisted by the chain block to move, so that the bearing frame is transferred from the original track to the orbital transfer track.
Further, the method for hoisting the bearing frame by the chain block to move comprises the following steps: two groups of chain blocks are respectively hung on creeping formwork frame bodies on two sides of the bearing frame, one group of chain blocks apply translational pulling force to the bearing frame, and the other group of chain blocks move along with the bearing frame to release the pulling ropes.
The further method for installing the bearing frame at the position of the transfer rail comprises the following steps: after the bearing frame moves to the design position of the orbital transfer, the high-strength bolts of the bearing frame and the distribution beam are reinstalled to fix the bearing frame and the creeping formwork frame body, the climbing shoes and the anchor plates are lifted to the embedded part position of the orbital transfer, the high-strength bolts are installed to complete the anchoring of the anchor plates and the cable tower concrete, bearing pins penetrate between the bearing frame and the climbing shoes to enable the bearing frame to recover the function again, limit pins are inserted to limit the bearing frame, the orbital transfer is reinstalled, and the track plugboards are inserted to complete the orbital transfer of a single track.
The invention has the advantages that: 1. the safety is high; the temporary support frame determines the structure through stress calculation, and the structure safety is guaranteed; the aerial rail transfer construction is carried out on the original creeping formwork frame body, the platform is firm and firm, the safety nets around are totally closed, and the safety of the working environment is guaranteed; compared with the traditional rail-changing scheme that the creeping formwork is dismantled and lifted after the rail is changed on the ground, the hoisting operation is greatly reduced, and the safety risk that the high-altitude operation of personnel does not have reliable guarantee is avoided.
2. The economic benefit is good: the traditional orbital transfer method needs at least 8 persons, one tower crane and a large operation field, but the personnel only need 4 persons, the tower crane is not needed, the ground operation field is not occupied, the materials of the temporary support frame are few, and the temporary support frame is a reusable structure; overall the economic investment is only one quarter of that of the conventional process.
3. The construction period is short: compared with the traditional method, the orbital transfer method reduces a large number of unnecessary working procedures; the same procedure takes more than half of the time compared with the traditional method; the conventional method stops the construction of the tower column main body once the rail is changed, and the rail changing construction and the main body construction can be synchronously carried out by the method, so that the construction time of the main body structure is not occupied. The total track changing time is greatly reduced, and the total construction period of the main body can be shortened by 10 to 15 days
4. The method is simple and easy to operate: the large-scale equipment is not required to be used, the existing materials and tools on the construction site are adopted, the labor intensity of workers is reduced, the operation method is simplified, special training is not required, and people can work with the hands.
The rail transfer method is simple, convenient and safe, reduces hoisting procedures and aerial operation, greatly simplifies the climbing formwork rail transfer procedures, and has popularization value.
Drawings
FIG. 1: the invention relates to a front view of a track-changing front creeping formwork frame body;
FIG. 2: view 1-1 of FIG. 1 of the present invention;
FIG. 3: in the invention, a temporary support frame front view is installed in the rail transfer process;
FIG. 4: view 2-2 of FIG. 3 of the present invention;
FIG. 5: in the rail transfer process, a bearing frame is hoisted in a front view;
FIG. 6: 3-3 of FIG. 5 of the present invention;
FIG. 7: the side view of the climbing formwork after the track is changed;
FIG. 8: the structure of the temporary support frame is schematic;
wherein: 1-cable tower; 2, climbing formwork frame body; 3-temporary support frame; 4, a bearing frame; 5-original orbit; 6-orbital transfer; 7-chain block; 8, climbing boots; 9-anchor plate;
3.1-load-bearing ear plate; 3.2-arm braces; 3.3-beam; 3.4-diagonal bracing; 3.5-vertical bar; 3.6-limiting clamping plate.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1 to 8, the cable tower 1 of the present embodiment includes four sides, which are prism structures with small top and large bottom, the climbing form frame body 2 surrounds the cable tower 1, three sets of bearing frames 4 are disposed on the climbing form frame body 2 of each side of the cable tower 1, the side of the cable tower 1 is gradually narrowed from bottom to top, and the track distance between two sets of bearing frames 4 located outside the side needs to be narrowed to adapt to the narrowing of the side, so that when the climbing form frame body 2 travels to a certain height of the cable tower 1, the bearing frames 4 need to be tracked. The actual rail transfer is that the two groups of bearing frames 4 close to the outer side of the side surface of the cable tower 1 translate towards the middle, and the bearing frame 4 in the middle of the side surface does not need to be subjected to rail transfer.
In order to support the creeping formwork during the rail transfer, the temporary support frame 3 is arranged on the side surface of the cable tower 1 in the embodiment. As shown in fig. 3 to 6, the temporary support frame 3 is located between the bearing frame 4 on the outer side of the side surface of the cable tower 1 and the middle bearing frame 4, and the distance between the temporary support frame 3 and the bearing frame 4 after rail change is 50cm, so that interference between the temporary support frame 3 and the bearing frame 4 is avoided.
As shown in fig. 8, the temporary support frame 3 of the present embodiment is a triangular support structure, and includes a bearing ear plate 3.1 anchored on the side of the cable tower 1 and a supporting foot 3.2 for adjusting the inclination of the temporary support frame 3, and the temporary support frame 3 is a triangular frame structure formed by a cross beam 3.3, an inclined strut 3.4 and a vertical rod 3.5. Wherein the cross beam 3.3 is supported on the distribution beam of the creeper body 2. Crossbeam 3.3 keeps away from the one end of cable tower 1 and is provided with spacing cardboard 3.6, and spacing cardboard 3.6 are used for restricting creeping formwork and break away from interim support frame 3, improve connection stability between them.
This embodiment carries out the translation to bearing frame 4 and uses chain block 7, and two sets of chain block 7 altogether install respectively on the creeping formwork and lie in two nodes of the +2 layer platform of bearing frame top, and a set of chain block 7 is dragged and is carried out the translation by bearing frame 4, and another group of chain block 7 is followed bearing frame 4 and is removed and put loosely. In addition, the creeping formwork is provided with a temporary horizontal rod for eliminating the horizontal component force generated in the translation process of the bearing frame 4.
During actual construction: 1. after the creeping formwork travels to an area where the cable tower 1 needs to be subjected to rail transfer, installing a temporary support frame 3 on the side surface of the cable tower 1, and transferring the weight of the creeping formwork to the temporary support frame 3, as shown in fig. 3-4;
2. dismantling the bearing frame 4 to be subjected to rail transfer, dismantling the anchor plate 9 and the climbing boot 8 of the bearing frame 4 from the side surface of the cable tower 1, and then putting the bearing frame and the climbing boot together on a platform of the climbing formwork frame body 2;
3. two groups of chain blocks 7 are arranged at the positions of the distribution beams and the vertical rods of the + 2-layer platform of the climbing formwork frame body 2, one group of chain blocks 7 apply translational tension to the bearing frame 4, and the other group of chain blocks 7 release the pull ropes along with the bearing frame 4 until the bearing frame 4 is transferred to the design position of the orbital transfer track, as shown in fig. 5-6;
4. after the bearing frame 4 moves to the design position of the orbital transfer track 6, high-strength bolts between the bearing frame and the distribution beam are installed, climbing shoes 8 and anchor plates 9 are lifted to the positions of embedded parts of the orbital transfer track 6, the anchor plates are fixed on the embedded parts, bearing pins penetrate into the positions of the climbing shoes 8 when the orbital transfer track 6 is hoisted, and the bearing frame 4 and the orbital transfer track 6 are installed;
5. the weight of the climbing formwork frame body 2 is transferred to the bearing frame 4 after rail transfer again, the temporary support frame 3 is dismantled, as shown in fig. 7, rail transfer construction of other bearing frames 4 is carried out according to the flow, and rail transfer construction is completed on all the bearing frames 4.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A cable tower creeping formwork aerial rail transfer construction method is characterized in that: when the climbing formwork frame body (2) advances to a to-be-tracked area of the cable tower (1), a temporary support frame (3) is installed on the outer side of the cable tower (1), so that the weight of the climbing formwork frame body (2) is transferred to the temporary support frame (3) from a bearing frame (4), then the bearing frame (4) is detached from an original track (5) on the side portion of the cable tower (1), the detached bearing frame (4) is installed at a track-changing position, so that the weight of the climbing formwork frame body (2) is transferred to the bearing frame (4), then the temporary support frame (3) is detached, and the track-changing construction of a single track is completed by penetrating a track-changing track (6) again;
the method for transferring the disassembled bearing frame (4) to the track transfer rail (6) comprises the following steps: a chain block (7) is installed on the creeping formwork frame body (2), and the bearing frame (4) is hoisted to move through the chain block (7), so that the bearing frame (4) is transferred from the original track (5) to the orbital transfer track (6).
2. The cable tower creeping formwork aerial rail transfer construction method according to claim 1, characterized in that: the method for installing the temporary support frame (3) on the outer side of the cable tower (1) comprises the following steps: the temporary support frame (3) is processed according to a design drawing, a bearing lug plate (3.1) is installed at an upper supporting point of the outer side of the cable tower (1) corresponding to the temporary support frame (3), a bearing pin is arranged on the upper supporting point of the temporary support frame (3) in a penetrating mode and fixed on the bearing lug plate (3.1), and a supporting foot (3.2) is installed at the lower end position, connected with the cable tower (1), of the temporary support frame (3) and used for adjusting the inclination of the temporary support frame (3).
3. The cable tower creeping formwork aerial rail transfer construction method according to claim 2, characterized in that: the method for installing the bearing lug plate (3.1) at the upper supporting point of the temporary supporting frame (3) corresponding to the outer side of the cable tower (1) comprises the following steps: processing the bearing lug plate (3.1) according to a design drawing, embedding a climbing cone for the bearing lug plate (3.1) at a position 50cm away from the design position of the orbital transfer track (6) before pouring, and screwing in a bolt after removing a mold to fix the bearing lug plate (3.1) on the climbing cone.
4. The cable tower creeping formwork aerial rail transfer construction method according to claim 1, characterized in that: the method for dismantling the bearing frame (4) comprises the following steps: the method comprises the steps of dismantling an original track (5), dismantling an anchor plate (9) and climbing boots (8) of a bearing frame (4) connected with the original track (5), fastening the anchor plate (9) and the climbing boots (8) together, dismantling bolts on the anchor plate (9), then putting down the anchor plate and the bearing frame (4) together onto a creeping formwork frame body (2), and dismantling high-strength bolts of the bearing frame (4) and a distribution beam to complete dismantling work of the bearing frame (4).
5. The cable tower creeping formwork aerial rail transfer construction method according to claim 1, characterized in that: the method for hoisting the bearing frame (4) to move through the chain block (7) comprises the following steps: two groups of chain blocks (7) are respectively hung on the creeping formwork frame bodies (2) on two sides of the bearing frame (4), one group of chain blocks (7) apply translational pulling force to the bearing frame (4), and the other group of chain blocks (7) move along with the bearing frame (4) to release the pulling ropes.
6. The cable tower creeping formwork aerial rail transfer construction method according to claim 1, characterized in that: the method for installing the bearing frame (4) at the position of the transfer rail comprises the following steps: after the bearing frame (4) moves to the design position of the orbital transfer track (6), high-strength bolts of the bearing frame (4) and the distribution beam are reinstalled to fix the bearing frame (4) and the creeping formwork frame body (2), the climbing shoes (8) and the anchor plates (9) are lifted to the positions of embedded parts of the orbital transfer track (6), the high-strength bolts are installed to anchor the anchor plates (9) and concrete of the cable tower (1), bearing pins penetrate between the bearing frame (4) and the climbing shoes (8) to enable the bearing frame (4) to recover, limit pins are inserted to limit the bearing frame (4), the orbital transfer track (6) penetrates again, and track inserting plates are inserted to complete orbital transfer of a single track.
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| CN201910628854.7A CN110387824B (en) | 2019-07-12 | 2019-07-12 | Cable tower creeping formwork aerial rail transfer construction method |
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| CN201910628854.7A CN110387824B (en) | 2019-07-12 | 2019-07-12 | Cable tower creeping formwork aerial rail transfer construction method |
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| CN110387824B true CN110387824B (en) | 2021-07-06 |
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| JP3952843B2 (en) * | 2002-05-15 | 2007-08-01 | 鹿島建設株式会社 | Construction method of tower structure |
| CN102277836B (en) * | 2011-06-14 | 2013-07-10 | 中铁五局集团建筑工程有限责任公司 | Construction method of tilting concrete tower base |
| JP6375141B2 (en) * | 2014-05-07 | 2018-08-15 | 株式会社竹中工務店 | Scaffolding device and concrete frame construction method using the scaffolding device |
| CN205591127U (en) * | 2016-05-10 | 2016-09-21 | 河南省公路工程局集团有限公司 | Supplementary hydraulic pressure creeping formwork construction arc guider of cable -stay bridge curve type king -post |
| CN106401174A (en) * | 2016-06-02 | 2017-02-15 | 中国建筑第八工程局有限公司 | Creeping formwork system used for construction of variable cross-section core tube and construction method of creeping formwork system |
| CN107604817B (en) * | 2017-09-28 | 2019-06-21 | 中交路桥华南工程有限公司 | Cable-stayed bridge profile single-side column tower section construction method |
| CN208122298U (en) * | 2018-03-12 | 2018-11-20 | 上海建工一建集团有限公司 | A kind of whole formwork system for structure missing layer |
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| Title |
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| 张国浩.黑山南北高速公路项目Moracica大桥墩身施工技术.《公路》.2018, * |
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Effective date of registration: 20220215 Address after: No.430011, Jinyinhu Road, Wuhan, Hubei Province Patentee after: CCCC SECOND HARBOR ENGINEERING Co.,Ltd. Patentee after: CCCC Wuhan harbor engineering design and Research Institute Co., Ltd Address before: No.430011, Jinyinhu Road, Wuhan, Hubei Province Patentee before: CCCC SECOND HARBOR ENGINEERING Co.,Ltd. |