CN102900022A - Hydraulic climbing formwork construction method for leaning tower of cable-stayed bridge - Google Patents
Hydraulic climbing formwork construction method for leaning tower of cable-stayed bridge Download PDFInfo
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Abstract
The invention discloses a hydraulic climbing formwork construction method for a leaning tower of a cable-stayed bridge. The method comprises the following steps: measuring and positioning the leaning tower and embedding an embedded part; erecting a formwork and pouring a first section of concrete, and mounting an anchoring system, a bearing bolt (1) and a climbing frame (3); mounting a bearing frame and a bearing platform on the anchoring system; mounting a template moving frame and an upper platform system, using the upper platform system for erecting the formwork, embedding the embedded part and pouring a second section of concrete of a tower column; mounting a lower platform and de-molding by moving the upper platform system; mounting the anchoring system in a third stage and mounting a climbing guide rail (5) and a guide rail supporting leg (6); operating a hydraulic system, lifting the whole frame to the third stage of the tower column, and mounting a lower-layer platform; assembling the mould by moving the upper platform system, embedding the embedded part and pouring a fourth section of concrete of the tower column; and operating the hydraulic system, lifting the whole frame to the fourth stage of the tower column, and entering into a circulating construction stage. According to the method provided by the invention, the mounting of the template is quickly and efficiently finished under the condition of the leaning tower column and the work load of mounting the template and the bracket is saved.
Description
Technical field
The present invention relates generally to a kind of job practices that is applied to the cable stayed bridge leaning tower, especially is applied to cable stayed bridge leaning tower hydraulic climbing mould construction method.
Background technology
The king-post of the steel concrete leaning tower of cable stayed bridge generally adopts rectangular hollow section, and the king-post profile adopts uniform section to arrange, because gradient, highly high, reinforcing bar, template construction difficulty are large, so the common templates Scheme of Strengthening is difficult to reach the construction purpose in this situation.
Summary of the invention
Technical problem to be solved by this invention is how to finish fast and effectively the installation of template and the engineering quantity of saving template and support in the situation that king-post tilts.
For achieving the above object, the invention provides a kind of cable stayed bridge leaning tower hydraulic climbing mould construction method, the method comprises the steps: that measurement and positioning determines the leaning tower position, first and second joint template construct is installed, before the second section template is in place, pass hole on the form surfacing with erection bolt, built-in fitting is fixed on the template; After the concreting, unload erection bolt, move after the template; Then load-bearing bolt 1 is screwed into and climbs in the cone 2; Formwork hoisting is in place, and climbing frame 3 is stuck on the load-bearing bolt 1, plugs safety pin 4; The bearing frame that assembly unit is good and bearing platform mount on the mounted anchor system; Installation form movable stand and upper mounting plate system use upper mounting plate system shuttering, bury the climbing form system built-in fitting underground by design attitude, build king-post the 3rd joint concrete; Lower platform is installed, and colligation king-post the 4th joint reinforcing bar, the 3rd joint concrete reach behind the demoulding strength demoulding by mobile upper mounting plate system, clear up king-post surface and template surface; The phase III anchor system is installed, lifting rail 5 is installed from top to bottom, mounting guide rail support leg 6; The operation hydraulic system rises to the king-post phase III with support body integral body, and lower floor's platform is installed; By mobile upper mounting plate system matched moulds, bury the climbing form system built-in fitting underground by design attitude, build king-post the 4th sections concrete; The operation hydraulic system rises to king-post quadravalence section with support body, enters the circulation construction stage.
Described template by panel, wooden frame, laterally steel backing stupefied 7, connect pawl 8, hanging component 9, flooring nail 10, fiber board bolt 11 and be formed by connecting; Panel adopts Visa plate 12, and ribs adopts wooden H-beam 13, laterally the stupefied employing Two bors d's oeuveres of steel backing channel-section steel 14.
Described built-in fitting comprises: embedded part plate 15, high-strength bolt 16, climb the cone 2, load-bearing bolt 1; Embedded part plate 15 must be determined by shearing resistance and tension designing and calculating with length and the diameter of high-strength bolt 16; Climb cone 2 and erection bolt and be used for embedded part plate 15 and high-strength bolt 16 location, before concrete is built, climb cone 2 and be fixed on the panel by erection bolt; Load-bearing bolt 1 is the main stressed member in the anchor parts, requires to reach Rc25-30 through modifier treatment, and through flaw detection, determines without just allowing to march into the arena behind heat treatment crack and other original cracks.
Hydraulic system comprises: hydraulic pump, oil cylinder, upper and lower Commutating box 20, hydraulic pump and oil cylinder provide lifting drive to whole climbing form system, upper and lower Commutating box 20 is to carry out the parts that power is transmitted between climbing frame 3 and the guide rail 5, change ratchet 19 directions of upper and lower Commutating box 20, realize promoting the function conversion of climbing frame 3 and guide rail 5.
Job practices strong adaptability of the present invention, applied range can dispose corresponding template system according to the dimensional requirement of architectural appearance, can form the climbing apparatus that is suitable for differing tilt angles type tower column structure.Be not subjected to height restriction, construction is subjected to wind effect little, and segment template can be recycled, and the most suitable leaning tower highly high, that the angle of inclination is large is constructed.Greatly improved production efficiency, shortened the construction period, for the cable stayed bridge inclination king-post such as China railways, highway, municipal administration and similarly the Structural Engineering construction very strong applicability and superiority are arranged.
Description of drawings
Fig. 1 is the top view of leaning tower hydraulic climbing formwork;
Fig. 2 is the generalized section of leaning tower hydraulic climbing formwork shown in Figure 1;
Fig. 3 is leaning tower hydraulic climbing formwork template facade generalized section
Fig. 4 is the top view of leaning tower hydraulic climbing formwork template;
Fig. 5 is leaning tower hydraulic climbing formwork template shown in Figure 4 side generalized section;
Fig. 6 is the suspension hook schematic diagram;
Fig. 7 is leaning tower hydraulic climbing formwork built-in fitting organigram;
Fig. 8 is leaning tower hydraulic climbing formwork climbing frame organigram;
Fig. 9 is leaning tower hydraulic climbing formwork job step schematic diagram one;
Figure 10 is leaning tower hydraulic climbing formwork job step schematic diagram two;
Figure 11 is leaning tower hydraulic climbing formwork job step schematic diagram three;
Figure 12 is leaning tower hydraulic climbing formwork job step schematic diagram four;
Figure 13 is leaning tower hydraulic climbing formwork job step schematic diagram five;
Figure 14 is leaning tower hydraulic climbing formwork job step schematic diagram six;
Figure 15 is leaning tower hydraulic climbing formwork job step schematic diagram seven;
Figure 16 is leaning tower hydraulic climbing formwork job step schematic diagram eight;
Figure 17 is leaning tower hydraulic climbing formwork job step schematic diagram nine;
Figure 18 is leaning tower hydraulic climbing formwork climbing frame general assembly schematic diagram;
Figure 19 is leaning tower hydraulic climbing formwork workflow diagram;
Among the figure: 1, load-bearing bolt, 2, climb cone, 3, climbing frame, 4, safety pin, 5, guide rail, 6, guide rail support leg, 7, laterally steel backing is stupefied, 8, connect pawl, 9, hanging component, 10, flooring nail, 11, fiber board bolt, 12, Visa plate, 13, wooden H-beam, 14, the Two bors d's oeuveres channel-section steel, 15, embedded part plate, 16, high-strength bolt, 17, steel plate, 18, ladder shelves, 19, ratchet, 20, upper and lower Commutating box.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, 2, be 30 degree or other number of degrees according to construction king-tower tower body inclining degree, this engineering design hydraulic climbing formwork system mainly comprises: template part, load bearing system, upper and lower climbing frame part, built-in fitting part, guide rail part, hydraulic system etc.
Shown in Fig. 3～6, template part by panel, laterally steel backing stupefied 7, connect pawl 8, hanging component 9, flooring nail 10, fiber board bolt 11 etc. and partly be formed by connecting.Panel adopts 21mm Visa plate 12, and ribs adopts H200 wooden H-beam 13, laterally the stupefied employing Two bors d's oeuveres of steel backing 14a channel-section steel 14.
Wooden form loading and unloading, assembly unit conveniently can be assembled into the template of all size on certain scope and degree.Template is lighter, and rigidity is large, and intensity is good, meets the demands.
Shown in Fig. 7,8, built-in fitting part: embedded part plate 15, high-strength bolt 16, climb cone 2, the compositions such as load-bearing bolt 1.The built-in fitting system is the final load-bearing part of whole creeping formwork system.
As shown in figure 18, embedded part plate 15 is connected with high-strength bolt 16, can make embedded part have good tension effect, also plays material-saving and the effect of joint space-efficient simultaneously, because its volume is little, has removed the problem that embedded part bumps reinforcing bar when formwork from.Embedded part plate 15 sizes, pull bar length and diameter must be determined by shearing resistance and tension designing and calculating.
Climb the location that cone 2 and erection bolt are used for embedded part plate 15 and high-strength bolt 16, before concrete is built, climb cone 2 and be fixed on the panel by erection bolt.
Load-bearing bolt 1 is the main stressed member in the anchor parts, requires to reach Rc25-30 through modifier treatment, and through flaw detection, determines without just allowing to march into the arena behind heat treatment crack and other original cracks.
As shown in figure 19, this project hydraulic climbing mould construction flow process:
1. carry out first and second joint measurement and positioning of leaning tower according to construction drawing, make first and second joint template of leaning tower, carry out location and the installation of climbing form system built-in fitting in the second section template.
The built-in fitting construction sequence:
The first step, built-in fitting is fixed in template.Before template is in place, pass hole on the form surfacing with erection bolt, built-in fitting is fixed on the template.To special location dimension, built-in fitting is fixed together by positioning bolt and panel, lifts with template.
Second step, the installation of load-bearing bolt 1.After the concreting, unload erection bolt, move after the template.Then load-bearing bolt 1 is screwed into and climbs in the cone 2.
In the 3rd step, template climbing frame 3 is in place.Formwork hoisting is in place, and climbing frame 3 is stuck on the load-bearing bolt 1, plugs safety pin 4.
The 4th step, the taking-up of built-in fitting.Operating personnel use in order to turnover hanging platform with box spanner and climbing cone and unload tool with load-bearing bolt 1 and climb cone 2 and take out, then with mortar floating shed to climb bore the hole that stays after 2.
2. hydraulic climbing mould construction flow process:
The first step, formwork erection is built first and second sections concrete as shown in Figure 9, buries the climbing form system built-in fitting during second section underground.
Second step, anchoring piece is installed in as shown in figure 10 form removal, and bearing frame and bearing platform that assembly unit is good mount on the mounted anchor system.
The 3rd step: as shown in figure 11 installation form movable stand and upper mounting plate system, use upper mounting plate system shuttering, bury the climbing form system built-in fitting underground by design attitude, build king-post the 3rd joint concrete.
The 4th step, lower platform is installed as shown in figure 12, colligation king-post the 4th joint reinforcing bar, the 3rd joint concrete reach behind the demoulding strength demoulding by mobile upper mounting plate system, clear up king-post surface and template surface.
The 5th step, the phase III anchor system is installed as shown in figure 13, lifting rail 5 is installed from top to bottom, mounting guide rail support leg 6.
The 6th step operated as shown in figure 14 hydraulic system support body integral body is risen to the king-post phase III, and lower floor's platform is installed.
The 7th step, by mobile upper mounting plate system matched moulds, bury the climbing form system built-in fitting underground by design attitude as shown in figure 15, build king-post the 4th sections concrete.
The 8th step, move back as shown in figure 16 mould, the 4th sections anchor system is installed, colligation king-post five-stage reinforcing bar.
The 9th step, operate as shown in figure 17 hydraulic system, guide rail is risen to king-post the 4th sections, utilize lower platform to remove king-post second stage load-bearing bolt 1, climb the turnover built-in fitting such as cone 2, the operation hydraulic system rises to king-post quadravalence section with support body, enters the circulation construction stage.
Therefore be applicable to the climbing formwork for construction method of leaning tower, comprising: measurement and positioning is determined the leaning tower position, and first and second joint template construct and installation before the second section template is in place, are passed hole on the form surfacing with erection bolt, and built-in fitting is fixed on the template.After the concreting, unload erection bolt, move after the template.Then load-bearing bolt 1 is screwed into and climbs in the cone 2.Formwork hoisting is in place, and climbing frame 3 is stuck on the load-bearing bolt 1, plugs safety pin 4.Bearing frame and bearing platform that assembly unit is good mount on the mounted anchor system.Installation form movable stand and upper mounting plate system use upper mounting plate system shuttering, bury the climbing form system built-in fitting underground by design attitude, build king-post the 3rd joint concrete.Lower platform is installed, and colligation king-post the 4th joint reinforcing bar, the 3rd joint concrete reach behind the demoulding strength demoulding by mobile upper mounting plate system, clear up king-post surface and template surface.The phase III anchor system is installed, lifting rail 5 is installed from top to bottom, mounting guide rail support leg 6.The operation hydraulic system rises to the king-post phase III with support body integral body, and lower floor's platform is installed.By mobile upper mounting plate system matched moulds, bury the climbing form system built-in fitting underground by design attitude, build king-post the 4th sections concrete.The operation hydraulic system rises to king-post quadravalence section with support body, enters the circulation construction stage.
The jacking of the automatic creeping formwork of hydraulic pressure move through hydraulic jack to guide rail 5 and climbing frame 3 alternately jacking realize.Guide rail 5 and climbing frame 3 are unrelated, can carry out relative motion between the two.When climbing frame 3 work, guide rail 5 and climbing frame 3 all are supported on the embedded part bearing, between the two without relative motion.Move back behind the mould immediately at the cone 2 of climbing that moves back that mould stays load-bearing bolts 1, hanging seat body, and embedded part bearing are installed, adjust ratchet 19 directions of upper and lower Commutating box 20 and come jacking guide rail 5, treat that guide rail 5 jackings put in place, after being located on this embedded part bearing, operating personnel forward immediately lower platform to and remove the embedded part bearing that is positioned at the lower platform place that exposes after guide rail 5 promotes, climb cone 2 etc.On removing climbing form frame, just can begin jacking climbing frame 3 after all drawknots, at this time guide rail 5 keeps motionless, adjust up and down and start oil cylinder after ratchet 19 directions, climbing frame 3 is just with respect to guide rail 5 motions, by guide rail and climbing frame 3 this alternately attached walls, promote each other the other side, climbing frame 3 can be climbed cone 2 along reservation on the body of wall and successively be promoted.
The climbing system of hydraulic climbing formwork plate body system mainly comprises: built-in fitting part, guide rail part, hydraulic system form.
The embedded part assembly of hydraulic climbing formwork system comprises: embedded part plate 15, high-strength bolt 16, climb cone 2, load-bearing bolt 1 etc.The built-in fitting system is the final load parts of whole climbing form system, all loads that bear on the climbing form system finally all are delivered to the built-in fitting system, built-in fitting system whether firm, directly affect the reliability of whole climbing form system, thus, the built-in fitting system is of paramount importance part in the whole climbing form system.
Embedded part plate 15 is connected with high-strength bolt 16, can make embedded part have good tension effect, also plays material-saving and the effect of joint space-efficient simultaneously, because its volume is little, has removed the problem that embedded part bumps reinforcing bar when formwork from.Embedded part plate 15 sizes, high-strength bolt 16 length and diameter must be determined by shearing resistance and tension designing and calculating.
Template by panel, wooden frame, laterally steel backing stupefied 7, connect pawl 8, hanging component 9, flooring nail 10, fiber board bolt 11 etc. and partly be formed by connecting.Panel adopts 21mm Visa plate 12, and ribs adopts H200 wooden H-beam 13, and laterally steel backing stupefied 7 adopts Two bors d's oeuveres 14a channel-section steel.Wooden form loading and unloading, assembly unit conveniently can be assembled into the template of all size on certain scope and degree.Template is lighter, and rigidity is large, and intensity is good, meets the demands.
Climb the location that cone 2 and erection bolt are used for embedded part plate 15 and high-strength bolt 16, before concrete is built, climb cone 2 and be fixed on the panel by erection bolt.
Load-bearing bolt 1 is the main stressed member in the anchor parts, requires to reach Rc25-30 through modifier treatment, and through flaw detection, determines without just allowing delivery behind heat treatment crack and other original cracks.
The hydraulic climbing system comprises: hydraulic pump, oil cylinder, upper and lower Commutating box 20 4 parts.
Hydraulic pump and oil cylinder provide lifting drive to whole climbing form system.
Upper and lower Commutating box 20 is to carry out the vitals that power is transmitted between climbing frame 3 and the guide rail 5, changes ratchet 19 directions of upper and lower Commutating box 20, realizes promoting the function conversion of climbing frame 3 or guide rail 5.
Job practices strong adaptability of the present invention, applied range can dispose corresponding template system according to the dimensional requirement of architectural appearance, can form the climbing apparatus that is suitable for differing tilt angles type tower column structure.Be not subjected to height restriction, construction is subjected to wind effect little, and segment template can be recycled, and the most suitable leaning tower highly high, that the angle of inclination is large is constructed.Greatly improved production efficiency, shortened the construction period, for the cable stayed bridge inclination king-post such as China railways, highway, municipal administration and similarly the Structural Engineering construction very strong applicability and superiority are arranged.
Although the present invention discloses as above with preferred embodiment; so it is not to limit the present invention; in the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (5)
1. cable stayed bridge leaning tower hydraulic climbing mould construction method, it is characterized in that: the method comprises the steps: that measurement and positioning determines the leaning tower position, and first and second joint template construct is installed, before the second section template is in place, pass hole on the form surfacing with erection bolt, built-in fitting is fixed on the template; After the concreting, unload erection bolt, move after the template; Then load-bearing bolt (1) is screwed into and climbs in the cone (2); Formwork hoisting is in place, and climbing frame (3) is stuck on the load-bearing bolt (1), plugs safety pin (4); The bearing frame that assembly unit is good and bearing platform mount on the mounted anchor system; Installation form movable stand and upper mounting plate system use upper mounting plate system shuttering, bury the climbing form system built-in fitting underground by design attitude, build king-post the 3rd joint concrete; Lower platform is installed, and colligation king-post the 4th joint reinforcing bar, the 3rd joint concrete reach behind the demoulding strength demoulding by mobile upper mounting plate system, clear up king-post surface and template surface; The phase III anchor system is installed, lifting rail (5) is installed from top to bottom, mounting guide rail support leg (6); The operation hydraulic system rises to the king-post phase III with support body integral body, and lower floor's platform is installed; By mobile upper mounting plate system matched moulds, bury the climbing form system built-in fitting underground by design attitude, build king-post the 4th sections concrete; The operation hydraulic system rises to king-post quadravalence section with support body, enters the circulation construction stage.
2. cable stayed bridge leaning tower hydraulic climbing mould construction method according to claim 1 is characterized in that: described template by panel, wooden frame, laterally steel backing stupefied (7), connect pawl (8), hanging component (9), flooring nail (10), fiber board bolt (11) and be formed by connecting; Panel adopts Visa plate (12), and ribs adopts wooden H-beam (13), laterally the stupefied employing Two bors d's oeuveres of steel backing channel-section steel (14).
3. cable stayed bridge leaning tower hydraulic climbing mould construction method according to claim 1, it is characterized in that: described built-in fitting comprises: embedded part plate (15), high-strength bolt (16), climb cone (2), load-bearing bolt (1); Embedded part plate (15) must be determined by shearing resistance and tension designing and calculating with length and the diameter of high-strength bolt (16); Climb cone (2) and erection bolt and be used for embedded part plate (15) and high-strength bolt (16) location, before concrete is built, climb cone (2) and be fixed on the panel by erection bolt; Load-bearing bolt (1) is the main stressed member in the anchor parts, requires to reach Rc25-30 through modifier treatment, and through flaw detection, determines without just allowing to march into the arena behind heat treatment crack and other original cracks.
4. cable stayed bridge leaning tower hydraulic climbing mould construction method according to claim 1, it is characterized in that: guide rail (5) is the track that climbs of whole climbing form system, it is formed by steel plate (17) and ladder shelves (18) assembly welding, ladder gear number amount is decided according to building height, the ratchet (19) of yoke transfers loads to guide rail about supplying, and then is delivered in the embedded part system.
5. cable stayed bridge leaning tower hydraulic climbing mould construction method according to claim 1, it is characterized in that: hydraulic system comprises: hydraulic pump, oil cylinder, upper and lower Commutating box (20), hydraulic pump and oil cylinder provide lifting drive to whole climbing form system, upper and lower Commutating box (20) is to carry out the parts that power is transmitted between climbing frame (3) and the guide rail (5), change ratchet (19) direction of upper and lower Commutating box (20), realize promoting the function conversion of climbing frame (3) and guide rail (5).
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| CN201210402842.0A CN102900022B (en) | 2012-10-22 | 2012-10-22 | Cable stayed bridge leaning tower hydraulic climbing mould construction method |
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| CN201210402842.0A CN102900022B (en) | 2012-10-22 | 2012-10-22 | Cable stayed bridge leaning tower hydraulic climbing mould construction method |
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| CN102900022B CN102900022B (en) | 2015-09-30 |
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| CN103741601A (en) * | 2013-06-28 | 2014-04-23 | 中交第三航务工程局有限公司 | Tower, beam and cable synchronous bridge forming technology |
| CN104863060A (en) * | 2015-05-23 | 2015-08-26 | 中国建筑第七工程局有限公司 | Leaning-tower template system and construction method adopting leaning-tower template system |
| CN104975566A (en) * | 2013-12-26 | 2015-10-14 | 中铁上海工程局集团有限公司 | Steel tube support applied to cable-stayed bridge arch tower construction |
| CN105821753A (en) * | 2016-05-18 | 2016-08-03 | 中铁第四勘察设计院集团有限公司 | Novel railway curve leaning tower cable-stayed bridge |
| CN105862600A (en) * | 2016-04-29 | 2016-08-17 | 钟爱华 | Multi-segment bridge casting equipment and construction method thereof |
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| CN103741601A (en) * | 2013-06-28 | 2014-04-23 | 中交第三航务工程局有限公司 | Tower, beam and cable synchronous bridge forming technology |
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| CN114457694B (en) * | 2022-02-28 | 2024-02-27 | 重庆市交通工程监理咨询有限责任公司 | Bridge climbing type formwork and construction method |
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