CN102518041B - Construction method of support system for overhead continuous beam form-erecting falsework - Google Patents
Construction method of support system for overhead continuous beam form-erecting falsework Download PDFInfo
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- CN102518041B CN102518041B CN 201110408064 CN201110408064A CN102518041B CN 102518041 B CN102518041 B CN 102518041B CN 201110408064 CN201110408064 CN 201110408064 CN 201110408064 A CN201110408064 A CN 201110408064A CN 102518041 B CN102518041 B CN 102518041B
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Abstract
The invention discloses a support system for an overhead continuous beam form-erecting falsework and a construction method of the support system. The support system for the overhead continuous beam form-erecting falsework comprises suspension type support structures which are arranged under framework pier crossbeams; suspending rods are arranged on the framework pier crossbeams in a penetrating way so as to be used for matching suspending beams; bailey beams are paved along the direction of a newly-built line to be used for supporting a continuous beam body; and bottom-ejection support structures, suspension type support structures and bottom-ejection and suspension combined support structures are arranged according to conditions of different projection positions of the newly-built line on the existing line. The invention solves the problems that the existing line is occupied when a continuous beam with a small angle and a large span overline is in construction, so that the beam body support frame construction can completely rely on a newly-built entity engineering, the restrict of adverse factors of construction environments can be avoided, the influence on the existing line is less, the construction schedule is accelerated, the construction cost is reduced, and the construction quality is improved.
Description
Technical field
The present invention relates to a kind of job practices of the braced structures for cast-in-situ continuous beam construction, specifically, relate to a kind of job practices of braced structures of overhead continuous beam formwork falsework.
Background technology
In bridge construction, when less and oblique section is longer when newly-built line and both wired skew angle degree, adopt continuous beam-Frame Pier constructure scheme more.Usually adopt floor stand construction method for the construction of continuous beam beam body this moment, namely adopts steel pipe scaffold or helix tube and i iron to form beam-column type bracket.When adopting above-mentioned rack construction continuous beam beam body, had relatively high expectations in the supporting structure basis, be subjected to simultaneously the restriction of the practice of construction factors such as the pier shaft height is higher, basic condition is relatively poor, supporting structure to both wired take more, construction is larger to circuit driving influence on system operation, and cost is high.
Summary of the invention
The present invention will solve is low-angle, the large technical problem that takies existing line during across footpath cross-line Construction of continuous beam, a kind of job practices of overhead continuous beam formwork falsework braced structures is provided, the entity project that can make the construction of beam body carriage place one's entire reliance upon and newly complete, and be not subjected to the restriction of construction environment unfavorable factor, on both wired impact was less, and accelerating construction progress, reduction construction cost, improve construction quality.
In order to solve the problems of the technologies described above, the present invention is achieved by following technical scheme:
A kind of overhead continuous beam formwork falsework braced structures, this braced structures comprises following three kinds of braced structuress:
(1) be arranged at the lower top type braced structures of pier between connection fully, described lower top type braced structures comprises the Bei Leizhu that is arranged at pier pier shaft one side between continuous beam beam body below connection, and described Bei Lei column top is erected with Bailey beam.
(2) be arranged at the suspension braced structures of Frame Pier crossbeam fully, described suspension braced structures comprises that the top cross-under is fixed in the suspension rod of described Frame Pier crossbeam, described suspension rod is distributed in described Frame Pier crossbeam and is positioned at section under continuous beam, large and small mileage at described Frame Pier crossbeam respectively arranges a row, the described suspension rod of every row is divided equally along the central lines of track of continuous beam and is arranged and the common cross-under in bottom has a suspention beam, is erected with the Bailey beam that arranges along the continuous beam direction above two described suspention beams.
(3) part is arranged at the Frame Pier pier stud, part is arranged at the braced structures that the lower top type of Frame Pier crossbeam is combined with suspension, the braced structures that described lower top type is combined with suspension comprises that the top cross-under is fixed in the suspension rod of described Frame Pier crossbeam, described suspension rod is distributed in described Frame Pier crossbeam and is positioned at section under continuous beam, large at described Frame Pier crossbeam, little mileage respectively arranges a row, every row's the common cross-under in described suspension rod bottom has a suspention beam, Frame Pier pier stud both sides, described continuous beam beam body below are provided with Bei Leizhu, jointly be erected with Bailey beam on described suspention beam and described shellfish thunder post.
Be provided with backing plate at described suspension rod place on the beam face that described Frame Pier crossbeam is solid section, be provided with the double nut for fixing described suspension rod on described backing plate.
Be disposed with distribution beam, needle beam and backing plate at described suspension rod place on the beam face of described Frame Pier crossbeam hollow section, be provided with the double nut for fixing described suspension rod on described backing plate.
A kind of job practices of described overhead continuous beam formwork falsework braced structures, carry out in accordance with the following steps:
(a) determine working load according to continuous beam beam body load and condition of construction, the strength and stability of checking computations braced structures;
(b) set up the braced structures that lower top type braced structures, suspension braced structures and lower top type are combined with suspension in different positions:
Newly-built line orthography fully outside both wired the position, between connection, pier supports continuous beam beam body, adopt described lower top type braced structures: pier pier shaft one side assembly unit shellfish thunder post between the connection below continuous beam beam body, pier pier shaft between shellfish thunder post and connection is carried out drawing, Bei Lei sets up Bailey beam in the column top;
Newly-built line orthography fully with both wired crossing positions, Frame Pier supports continuous beam beam body, adopts described suspension braced structures:
1. at the large and small mileage of Frame Pier crossbeam, one row's suspension centre pre-buried duct is set respectively during pouring frame pier crossbeam concrete, every row's suspension centre pre-buried duct be arranged in this place corresponding continuous beam beam body under in the zone;
2. install suspension rod in pre-buried duct, Frame Pier crossbeam end face uses the double nut fixed derrick at suspension rod position employing backing plate on backing plate;
3. suspending beam in midair with the lower end installation of row's suspension rod, the suspension rod at a two ends connects the suspention beam, and stable the slinging of suspended cross-beam got final product;
4. in ground distributor assembly Bailey beam;
5. respectively organize the Bailey beam assembly unit and lift after complete, direction across bridge lifting Bailey beam winches to the suspention beam and uses pull rope that Bailey beam is transferred to when above to indulge bridge to suspention, in rotary course, Bailey beam is penetrated and is placed on above the suspention beam between suspension rod;
6. after rigging out, remaining suspension rod penetrated the suspention beam and be fixed;
Newly-built line orthography part outside both wired, part and both wired crossing positions, Frame Pier supports continuous beam beam body, the braced structures that adopts described lower top type to be combined with suspension: the Frame Pier pier stud both sides of continuous beam beam body below arrange Bei Leizhu, shellfish thunder post and Frame Pier pier shaft are carried out drawing, and Bei Lei sets up Bailey beam in the column top; Frame Pier crossbeam below continuous beam beam body carries out the construction of described suspension braced structures simultaneously;
(c) carry out the pre-stretch-draw of suspension rod, eliminate structure and creep;
(d) lay the bamboo offset plate in the Bailey beam upper surface, and be connected with Bailey beam;
(e) lay scaffold on Bailey beam;
(f) lay continuous beam beam phantom plate on scaffold;
(g) reach span centre above the supporting structure strong point observation point is set, keep flat prefabricating load by designing requirement on continuous beam beam phantom plate, after the supporting structure sedimentation tends towards stability, prepressing materials unloading successively symmetrically;
(h) carry out the beam body construction.
The invention has the beneficial effects as follows:
The present invention's works that newly-built line is built that places one's entire reliance upon supports from body, is not subjected to the restriction of job site geographical environment, and difficulty of construction is less, construction quality is high.Particularly for low-angle, large across the newly-built circuit in footpath and crossing section operating mode of growing of existing line, on both wired impact was less, progress is fast, cost is low.Simultaneously the present invention Bailey beam used of constructing can shift to an earlier date at the scene and assembles, and is simple, convenient, thus further accelerating construction progress.
Description of drawings
Fig. 1 is newly-built line and both wired cross-line layout schematic diagram;
Fig. 2 is the structural representation of suspension braced structures;
Fig. 3 is lower top and the lateral view of setting up that suspends convolution braced structures and lower top type braced structures in midair;
Fig. 4 is lower top and the lateral view of setting up that suspends convolution braced structures and suspension braced structures in midair;
Fig. 5 is the front view of setting up of lower top type braced structures;
Fig. 6 is lower top and the front view of setting up that suspends the convolution braced structures in midair;
Fig. 7 is that pre-buried duct in the suspension braced structures is at the distribution schematic diagram of Frame Pier crossbeam;
Fig. 8 be lower top with suspention convolution braced structures in pre-buried duct at the distribution schematic diagram of frame end crossbeam;
Fig. 9 is the fixed installation schematic diagram of suspension rod on the Frame Pier crossbeam;
Figure 10 is the partial enlarged drawing of Fig. 9.
In figure: 1: both wired, 2: newly-built line, 3: pier between connection, 4: Frame Pier, 5: the Frame Pier crossbeam, 51: solid section, 52: hollow section, 6: scaffold, 7: Frame Pier pier stud, 8: suspension rod, 9: Bailey beam, 10: the suspention beam, 11: timber wedge, 12: to pull bar, 13: Bei Leizhu, 14: cushion cap, 15: i iron, 16: pre-buried duct, 17: distribution beam, 18: needle beam, 19: backing plate, 20: continuous beam beam body, 21: nut.
The specific embodiment
The present invention is described in further detail below in conjunction with drawings and Examples:
Simplified schematic as Fig. 1, when less and oblique section is longer when newly-built line 2 and both wired 1 oblique angles, pier 3 between Frame Pier 4 and connection both is arranged in beyond wired 1 road width, on Frame Pier 4 pier studs, rigid beam is set, the continuous beam of newly-built line 2 is set on Frame Pier crossbeam 5.Particularly, when newly-built line 2 both was projected in outside wired 1, newly-built line 2 did not need to use Frame Pier 4 forms, and newly-built line 2 beam bodies are placed between connection on the Dun3Dun top fully; When half both is positioned at outside on wired 1, half is positioned at when newly-built line 2 upright projections, because pier shaft both is arranged in outside wired 1 road width, this moment, newly-built line 2 beam bodies can not stand on Dun Ding fully, and some is projected in beyond Dun Ding, therefore pier form of structure changes, adopt Frame Pier 4; On both wired 1 beam bodies, newly-built line 2 beam bodies will be placed on Frame Pier crossbeam 5 this moment when newly-built line 2 upright projections; Along with the continuation of newly-built line 2 is extended, its projection again become a part on last minute of Frame Pier crossbeam 5 on Frame Pier 4 Dun Ding; When newly-built line 2 beam bodies both strode across wired 1 beam body, newly-built line 2 beam bodies can stand on the pier top fully, and no longer adopt Frame Pier 4 and adopt pier 3 between connection this moment.
Both on wired 1 the time, newly-built line 2 beam bodies are positioned on Frame Pier crossbeam 5 in whole or in part when newly-built line 2 upright projections.For reducing newly-built line 2 Construction of continuous beam to both impacts of wired 1, the present invention discloses a kind of suspension braced structures that is arranged at Frame Pier crossbeam 5 belows, namely penetrate suspension rod 8 and coordinate suspention beam 10 on Frame Pier crossbeam 5, lay Bailey beam 9 along newly-built line 2 line directions, continuous beam beam body 20 is supported.
As shown in Figure 2, the suspension braced structures comprises a plurality of suspension rods 8 of being made by fining twisted steel, and suspension rod 8 is distributed in Frame Pier crossbeam 5 and is positioned at section under continuous beam beam body 20, and Frame Pier crossbeam 5 is fixed in its top cross-under.Suspension rod 8 respectively arranges a row at the large and small mileage of Frame Pier crossbeam 5, one of each row's the suspension rod 8 common cross-under in bottom suspention beam 10, and such two row's suspension rod bottoms are fixed with two suspention beams 10.Be erected with the Bailey beam 9 that arranges along the continuous beam direction above two suspention beams 10.
Above-mentioned overhead continuous beam formwork falsework braced structures is applied in newly-built line 2 and both crosses in wired 1 construction, adopt different braced structuress for different positions, consist of overhead continuous beam formwork falsework braced structures of the present invention, to shown in Figure 6, specifically this braced structures comprises following three kinds of braced structuress as Fig. 3:
(1) when newly-built line 2 both is projected in outside wired 1, newly-built line 2 beam bodies are placed between connection on the Dun3Dun top fully, between the connection of continuous beam beam body 20 belows, pier 3 pier shaft one sides arrange shellfish thunder post 13, and shellfish thunder post 13 tops are erected with Bailey beam 9, are referred to as the lower top type braced structures.
(2) when newly-built line 2 upright projections half both be positioned on wired 1, when half both is positioned at outside wired 1, pier adopts Frame Pier 4.Continuous beam beam body 20 parts are stood on Dun Ding, a part is placed on Frame Pier crossbeam 5, therefore the braced structures that adopts lower top type to be combined with suspension, pier 3 pier shaft both sides arrange the lower top type braced structures between the connection below continuous beam beam body 20, and in Frame Pier crossbeam 5 sections of continuous beam beam body 20 below correspondences, the suspension braced structures are set.Jointly be erected with Bailey beam 9 on the shellfish thunder post 13 of lower top type braced structures and the suspention beam 10 of suspension braced structures.
(3) when newly-built line 2 upright projections fully both on wired 1 the time, continuous beam beam body 20 will be placed on Frame Pier crossbeam 5, only adopt the suspension braced structures that is arranged at Frame Pier crossbeam 5 belows to get final product.
In the braced structures of above-mentioned (2) and (3), along with 2 pairs of both continuous incisions of wired 1 angle of newly-built line, continuous beam beam body 20 is at the relative position of Frame Pier crossbeam 5 also corresponding changing.Because of the suspention beam 10 hoisting point position all the time under the continuous beam beam body 20 of newly-built line 2, therefore hoisting point position also changes simultaneously with continuous beam beam body 20.As shown in Figure 7, the pre-buried duct 16 of suspension centre in the suspension braced structures respectively arranges a row at the large and small mileage of frame end crossbeam 5, each row is provided with eight according to construction load, and layout is divided equally along the central lines of track of newly-built line 2 continuous beam beam bodies 20 in eight suspension centre pre-buried ducts 16.As shown in Figure 8, the suspension centre pre-buried duct 16 in lower top and suspention convolution braced structures also respectively arranges a row at the large and small mileage of Frame Pier crossbeam 5, and each row arranges some according to construction load and continuous beam beam body 20.
As shown in Figure 9 and Figure 10, because there be solid section 51 in Frame Pier crossbeam 5 and hollow section 52, suspension centre be positioned at solid section 51 o'clock, three layers of backing plate 19 are set, more fixing by double nut 21 on the beam face at suspension rod 8 places.When suspension centre was positioned at hollow section 52, for disperseing suspension centre for the pressure of Frame Pier crossbeam 5, employing is two, and " [" 18 channel-section steels were as distribution beam 17.For improving its holistic resistant behavior, to padding a steel plate as needle beam 18, on needle beam again pad 2cm steel plate as pad 19 simultaneously at vertical bridge on distribution beam 17, adopt at last double nut 21 fixing.
The job practices of the overhead continuous beam formwork falsework braced structures of brief description the present embodiment:
Determine working load according to load and the condition of construction of continuous beam beam body 20, adopt permissible stress method design braced structures, will guarantee during design that each member of braced structures and bulk strength, rigidity and stability all satisfy construction requirement;
Set up overhead continuous beam formwork and hang the falsework braced structures, comprising three kinds of situations, the sequence of construction between three kinds of braced structuress is not done restriction, organizes according to on-the-spot practice of construction situation:
(1) when newly-built line 2 orthography fully in both positions outside wired 1, between connection, pier 3 supports continuous beam beam bodies 20, adopts above-mentioned lower top type braced structures, directly adopts 13 pairs of Bailey beams 9 of shellfish thunder post to support.Pier 3 pier shaft one side assembly unit shellfish thunder posts 13 between the connection below continuous beam beam body 20, shellfish thunder post 13 are divided into that the up and down is two-layer carries out assembly unit, and bottom 9m is one deck, and all the other shellfish thunder sheets of top are one deck, and column shellfish thunder sheet take three to four rows are one group, carry out assembly unit on ground.The complete rear employing 25t crane of each parts assembling lifts, lower floor's shellfish thunder post 13 rigging outs and be connected firmly after carry out upper strata Bei Leizhu 13 assembly units.Utilize the original template of pier 3 pier shafts between connection that pulling eye is carried out shellfish thunder post 13 and pier shaft to drawing, between shellfish thunder post 13 and pier shaft, with timber wedge 11 jam-packs, timber wedge 11 reaches pull bar 12 is arranged at shellfish thunder sheet Nodes.Set up two " I " 25 i iron 15 as the supporting structure lower transverse beam on shellfish thunder post 13, can pad the steel plate of different-thickness on crossbeam and regulate the Bailey beam absolute altitude, i iron 15 is arranged at shellfish thunder sheet Nodes.
(2) when newly-built line 2 orthography fully with both wired 1 intersect the position, Frame Pier 4 supports continuous beam beam bodies 20, adopts above-mentioned suspension braced structures, the construction sequence of suspension braced structures is as follows:
1. pouring frame pier crossbeam 5 concrete respectively arrange the pre-buried duct 16 of suspension centre of eight Φ 48 at the large and small mileage of Frame Pier crossbeam 5.The pre-buried duct 16 of suspension centre be arranged in this place corresponding continuous beam beam body 20 under in the zone, gradually change along with the continuous incision of 2 pairs, newly-built line both wired 1 angle on different Frame Pier crossbeams 5, every row also divides equally along the circuit center line in pre-buried duct 16.
2. install Φ 32 fining twisted steels in pre-buried duct 16 as suspension rod 8, Frame Pier crossbeam 5 end faces use double nut 21 fixed derricks 21 at suspension rod position employing backing plate 19 on backing plate.As the hollow section 52 of 16 positions, pre-buried duct at Frame Pier crossbeam 5, arrange between the beam face of hollow section 52 and backing plate 19 that two [18 elongated channel-section steels are as the distribution beam 17 of suspension centre, and on distribution beam 17, vertical bridge is to placing needle beam 18.
3. before Bailey beam 9 liftings, at first suspention beam 10 is installed, the suspention beam 10 of suspension rod 8 lower ends installation with row suspends 10 suspension rods 8 that connect two ends of beam this moment in midair, can be got final product by stable slinging.
4. carry out the assembly unit of Bailey beam 9 on ground, take every 2-3 row as one group.
5. respectively organizing the complete rear use 50t crane of Bailey beam 9 assembly units lifts, direction across bridge lifting Bailey beam 9, winching to suspention beam 10 uses when above pull rope that Bailey beam 9 is transferred to indulge bridge to suspention, in rotary course, Bailey beam 9 is penetrated and is placed on above the suspention beam 10 between suspension rod 8.
6. after rigging out, remaining suspension rod 8 is penetrated suspention beam 10 and being fixed, will be positioned at simultaneously between the Bailey beam 9 of Frame Pier crossbeam 5 belows and crossbeam with the hardwood filling, hardwood is positioned over shellfish thunder sheet Nodes.
(3) when newly-built line 2 orthography parts both outside wired 1, part with both wired 1 intersect the position, Frame Pier 4 supports continuous beam beam bodies 20, adopts above-mentioned lower top and suspends the convolution braced structures in midair.Concrete erection method is identical with step in (one), (two) respectively.
Above-mentioned three kinds of braced structuress will be carried out the pre-stretch-draw of suspension rod 8 after setting up, and namely every fining twisted steel are carried out the pre-stretch-draw of 25t pulling force, creep with the supporting structure that improves its tensile strength and eliminate after loading.
Lay the bamboo offset plate in Bailey beam 9 upper surfaces, and use iron wire to be connected with Bailey beam 9, to prevent that in work progress, article drop to both wired.
Lay full framing on Bailey beam 9, spacing 0.6m laterally lays 15 * 15cm flitch on Bailey beam, and use U-bolt fixedly flitch on Bailey beam 9, wood put set up spacing in length and breadth spacing be 0.6 * 0.6m bowl fastening type scaffold 6, and do with the 48mm steel pipe sweep the floor bar and bridging.
Lay continuous beam beam body 20 templates on scaffold 6.
Above the supporting structure strong point and span centre observation point 3 places respectively are set, keep flat prefabricating load by designing requirement on template.Be specially: loaded value is 50% of beam body weight for the first time; Loaded value is 80% of beam body weight for the second time; Loaded value is 120% of beam body weight for the third time.The variation of simultaneous observation absolute altitude in loading procedure, per hour observation once, reaches the prefabricating load value and is no less than 72 hours, adjacent twice observation value difference level off to zero be considered as bracket stable, can be the unloading successively symmetrically of overbottom pressure material.
At last, carry out the beam body construction.
Technical scheme of the present invention can effectively solve due to newly-built line and both wired angle of intersection degree was less, and overlapping area is larger, takies the construction difficult problem of existing line during construction, reaches the purpose of accelerating construction progress, reduction construction cost, raising construction quality.
Although the above is described the preferred embodiments of the present invention by reference to the accompanying drawings; but the present invention is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away from the scope situation that aim of the present invention and claim protect, can also make the concrete conversion of a lot of forms, within these all belong to protection scope of the present invention.
Claims (3)
1. the job practices of an overhead continuous beam formwork falsework braced structures, is characterized in that,
This overhead continuous beam formwork falsework braced structures specifically comprises following three kinds of braced structuress:
(1) be arranged at the lower top type braced structures of pier between connection fully, described lower top type braced structures comprises the Bei Leizhu that is arranged at pier pier shaft one side between continuous beam beam body below connection, and described Bei Lei column top is erected with Bailey beam.
(2) be arranged at the suspension braced structures of Frame Pier crossbeam fully, described suspension braced structures comprises that the top cross-under is fixed in the suspension rod of described Frame Pier crossbeam, described suspension rod is distributed in described Frame Pier crossbeam and is positioned at section under continuous beam, large and small mileage at described Frame Pier crossbeam respectively arranges a row, the described suspension rod of every row is divided equally along the central lines of track of continuous beam and is arranged and the common cross-under in bottom has a suspention beam, is erected with the Bailey beam that arranges along the continuous beam direction above two described suspention beams.
(3) part is arranged at the Frame Pier pier stud, part is arranged at the braced structures that the lower top type of Frame Pier crossbeam is combined with suspension, the braced structures that described lower top type is combined with suspension comprises that the top cross-under is fixed in the suspension rod of described Frame Pier crossbeam, described suspension rod is distributed in described Frame Pier crossbeam and is positioned at section under continuous beam, large at described Frame Pier crossbeam, little mileage respectively arranges a row, every row's the common cross-under in described suspension rod bottom has a suspention beam, Frame Pier pier stud both sides, described continuous beam beam body below are provided with Bei Leizhu, jointly be erected with Bailey beam on described suspention beam and described shellfish thunder post,
The job practices of described overhead continuous beam formwork falsework braced structures is carried out in accordance with the following steps:
(a) determine working load according to continuous beam beam body load and condition of construction, the strength and stability of checking computations support system;
(b) set up the braced structures that lower top type braced structures, suspension braced structures and lower top type are combined with suspension in different positions:
Newly-built line orthography fully outside both wired the position, between connection, pier supports continuous beam beam body, adopt described lower top type braced structures: pier pier shaft one side assembly unit shellfish thunder post between the connection below continuous beam beam body, pier pier shaft between shellfish thunder post and connection is carried out drawing, Bei Lei sets up Bailey beam in the column top;
Newly-built line orthography fully with both wired crossing positions, Frame Pier supports continuous beam beam body, adopts described suspension braced structures:
1. at the large and small mileage of Frame Pier crossbeam, one row's suspension centre pre-buried duct is set respectively during pouring frame pier crossbeam concrete, every row's suspension centre pre-buried duct be arranged in this place corresponding continuous beam beam body under in the zone;
2. install suspension rod in pre-buried duct, Frame Pier crossbeam end face uses the double nut fixed derrick at suspension rod position employing backing plate on backing plate;
3. suspending beam in midair with the lower end installation of row's suspension rod, the suspension rod at a two ends connects the suspention beam, and stable the slinging of suspended cross-beam got final product;
4. in ground distributor assembly Bailey beam;
5. respectively organize the Bailey beam assembly unit and lift after complete, direction across bridge lifting Bailey beam winches to the suspention beam and uses pull rope that Bailey beam is transferred to when above to indulge bridge to suspention, in rotary course, Bailey beam is penetrated and is placed on above the suspention beam between suspension rod;
6. after rigging out, remaining suspension rod penetrated the suspention beam and be fixed;
Newly-built line orthography part outside both wired, part and both wired crossing positions, Frame Pier supports continuous beam beam body, the braced structures that adopts described lower top type to be combined with suspension: the Frame Pier pier stud both sides of continuous beam beam body below arrange Bei Leizhu, shellfish thunder post and Frame Pier pier shaft are carried out drawing, and Bei Lei sets up Bailey beam in the column top; Frame Pier crossbeam below continuous beam beam body carries out the construction of described suspension braced structures simultaneously;
(c) carry out the pre-stretch-draw of suspension rod, the elimination system is crept;
(d) lay the bamboo offset plate in the Bailey beam upper surface, and be connected with Bailey beam;
(e) lay scaffold on Bailey beam;
(f) lay continuous beam beam phantom plate on scaffold;
(g) reach span centre above the strutting system strong point observation point is set, keep flat prefabricating load by designing requirement on continuous beam beam phantom plate, after the strutting system sedimentation tends towards stability, prepressing materials unloading successively symmetrically;
(h) carry out the beam body construction.
2. the job practices of a kind of overhead continuous beam formwork falsework braced structures according to claim 1, it is characterized in that, be provided with backing plate at described suspension rod place on the beam face that described Frame Pier crossbeam is solid section, be provided with the double nut for fixing described suspension rod on described backing plate.
3. the job practices of a kind of overhead continuous beam formwork falsework braced structures according to claim 1, it is characterized in that, be disposed with distribution beam, needle beam and backing plate at described suspension rod place on the beam face of described Frame Pier crossbeam hollow section, be provided with the double nut for fixing described suspension rod on described backing plate.
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| CN109898849B (en) * | 2017-12-07 | 2021-03-02 | 广宏建设集团有限公司 | Support device of formwork system adopting bailey frames and using method thereof |
| CN108708289A (en) * | 2018-06-26 | 2018-10-26 | 中建四局第三建筑工程有限公司 | A kind of method for supporting and device of bridge cast-in-situ beam slab template |
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| CN202359503U (en) * | 2011-12-09 | 2012-08-01 | 中国建筑第六工程局有限公司 | Formwork falsework supporting system for elevated continuous beam |
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