CN104314312B - High altitude reinforced concrete corridor structure triangle steel tube cantilever formwork construction technology - Google Patents
High altitude reinforced concrete corridor structure triangle steel tube cantilever formwork construction technology Download PDFInfo
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- CN104314312B CN104314312B CN201410633659.0A CN201410633659A CN104314312B CN 104314312 B CN104314312 B CN 104314312B CN 201410633659 A CN201410633659 A CN 201410633659A CN 104314312 B CN104314312 B CN 104314312B
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Abstract
The invention relates to a high altitude reinforced concrete corridor structure triangle steel tube cantilever formwork construction technology suitable for two adjacent high buildings which are less than 120m in height and less than or equal to 12m apart. The high altitude reinforced concrete corridor structure triangle steel tube cantilever formwork construction technology temporarily changes a component stress state of a corridor structure, changes a cantilever beam into a continuous beam, changes a cantilever bracket into an arc structure, improves early bearing capacity of the corridor structure, achieves a continuous construction purpose, reduces technical downtime, and simultaneously uses a common steel tube scaffold construction method and common tools, conveniently builds and dismantles a steel tube scaffold, and is strong in applicability, and clear and definite in rod piece stress. A variety of materials can be dispatched and used, and engineering cost can be reduced. The high altitude reinforced concrete corridor structure triangle steel tube cantilever formwork construction technology includes the following specific steps: building a corridor structure formwork support frame operation platform; constructing a corridor structure; chipping away corridor expansion joint beam concrete, and cutting off an expansion joint reinforced rib; dismantling a corridor structure formwork; dismantling the corridor structure formwork support frame operation platform.
Description
Technical field
The present invention relates to adapting to the two neighbouring high-rise high-altitude reinforced concrete vestibule knots at a distance of≤12m for below height 120m
The method of structure construction.
Background technology
Two between the high-altitude of high-rise, because function, architectural configuration and structure need, is designed with expansion joint even
Connect the gallery structure (symmetrical) that both sides high level stretches out.During skybridge structure construction, falsework one is to be set up using steel tube fastener
Land support bracket, but input amount of this scheme steel tube fastener be big, and due to scaffolding height high (general above 50 meters),
Framed bent depth-width ratio is big, vertical pole's span is little, constructional difficulties, general not employing；Two is as bearing frame using steel truss, but its
Shaped steel nonrecurring charge input is larger, requires higher, quality control relative difficult to processing, installation quality, lifting machine, and on
After portion's corridor construction terminates, the steel truss dismounting of lower section is relatively difficult, and after steel truss is removed simultaneously, turnover utilization rate is low；Three is profit
Set up gallery structure template construction operating platform of encorbelmenting with steel tube fastener, and encorbelmented beam stress shape using changing gallery structure bottom
State, improves the bearing capacity of gallery structure, reduces the pressure to vestibule template construction operating platform for the overhanging component structure, increases mould
The safety coefficient of board mount, my company achieves good effect in the aerial gallery structure construction of the ground such as Wuxi, Zhenjiang engineering
Really.
Content of the invention
It is an object of the invention to, provide a kind of high-altitude reinforced concrete gallery structure triangle steel pipe encorbelment mould bases construction work
Skill, takes the member stress state of Iterim Change gallery structure (to change into continuous beam by Cantilever Beams, bracket changes into arch by encorbelmenting
Shape structure), increase gallery structure early stage bearing capacity, reach continuous construction purpose, reduce technology and stop work；Adopt routine simultaneously
Steel pipe scaffold construction method and common tool, take and tear open conveniently, strong applicability, and rod member stress is clear and definite.Various materials all can have enough to meet the need
Using engineering cost can be reduced.
1st, a kind of high-altitude reinforced concrete gallery structure triangle steel pipe encorbelment mould bases construction technology it is characterised in that：Including with
Lower step；
A gallery structure formwork-support operating platform is set up,
1) wall pipe box out, inclined support bar bearing hole to be provided
After shear force wall reinforcing steel bar colligation is complete, reserves wall pipe hole, use tub using φ 60 pipe according to scheme in shear wall
Reserved bearing；
2) horizon bar in length and breadth is installed
Pass vertical equity bar from reserved wall pipe hole, set up inner side transverse horizontal bar in shear wall both sides, put up
Set up transverse horizontal bar afterwards from inside to outside successively；
3) wall connecting rod is installed
It is connected with horizon bar right-angle coupler through walls with horizontal steel tube inside shear wall, increase by one outside right-angle coupler
Individual antiskid fastener；
4) hound is installed
Hound is installed inside the horizon bar by wall, bottom is stretched in reserved bearing, is connected with horizon bar with fastener, phase
Adjacent hound length staggers not little by 500；
5) draw and hang steel wire rope
Formwork-support has been taken post-tensioning and has been hung steel wire rope, and steel wire rope should keep straight, increases the safety stock of formwork-support；
6) safety net is peripherally installed
Safety net is hanged up in time outside formwork-support；
7) press from bottom to top, by inner and outer principle of temporal sequence, after 1 step triangular elements are installed and terminated, further in accordance with upper
State order to set up upwards in proper order to operating platform closure；
B gallery structure is constructed
Construction process：Vertical rod I-steel laying, shuttering supporting set up, vestibule formwork erection, beam steel bar colligation, vestibule beam side
Mould, plate formwork erection, gallery structure beam concreting, vestibule Bars In Poured Concrete Slab reinforcing bar binding, vestibule Bars In Poured Concrete Slab concrete placings, vestibule concrete
Maintenance, last layer gallery structure template, reinforcing bar, concrete construction
C vestibule expansion and contraction beam concrete cuts, expansion joint reinforcement cuts off
After vestibule concrete reaches design strength, the interim beam expansion joint concrete connecting can be cut, and the reinforcing bar of increase is cut off；
D gallery structure form removable
Vestibule concrete reaches design strength and top two-layer vestibule concrete is constructed after terminating, and bottom shuttering supporting and template can be opened
Begin to remove
E gallery structure formwork-support operating platform is removed
Treat that vestibule bottom finishing finishes, the operation of gallery structure formwork-support can start platform removal.
Adopt diesis fastener in operating platform is set up, to improve the resistant slide ability at node；Coupling position
Should avoid positioned at rod member tensile region, to the tension stressed member with sleeve couple spreading, at node, additional short steel pipes are tied up as far as possible
Connect, overlap joint siding-to-siding block length is not preferably less than 1m, both sides respectively must not be less than 2 rotary buckles, and joint at grade is preferably mutual
Stagger a cell cube, to improve the breakout capacity of node；Reserved opening position on shear wall, absolute altitude must be accurate, in length and breadth
Embark on journey, deviation cannot be greater than 25mm.When shear wall concrete strength reaches 70% and is more than C25, support body construction can be carried out.
In the construction of bottom gallery structure, bottom gallery structure concrete is constructed at twice, and beam, plate concrete separately pour, and construction seams
At 50 under Bars In Poured Concrete Slab；The main horizontal beam of longitudinal direction of bottom gallery structure connect increase by 5 Φ 25 reinforcing bar [2 Φ 25 (and on)+3 Φ 25
(under)], using colligation overlap joint, after gallery structure pours, intensity can disconnect after reaching design strength this beam；Gallery structure concrete
Casting direction should from inside to outside and both sides are symmetrically poured；Covered with thin film, straw bag in time after gallery structure concrete final set and carry out
Heat and moisture preserving maintenance；The strength grade of concrete of bottom gallery structure improves one-level, so that concrete is reached early by force to improve carrying
Power, the concrete on upper strata can must be constructed after the concrete strength of bottom vestibule reaches 75%.
In operating platform is removed, removing all constructs in the finishing such as vestibule curtain wall and furred ceiling finishes, and qualified by inspection
After carry out；Check the clip contact points on support body before dismounting comprehensively, according to inspection result to after tear open loosening rod member, fastener etc. first
Reinforced, to ensure the safety in demolishing process；Debris on cleaning support body and the turnover such as unnecessary scaffold board, steel pipe
Material, uses tower crane handling to appointed place in time, forbids parabolic；Dismounting order should with set up order contrary, same stepping from top to bottom
OK, forbid operation simultaneously up and down, after often removing a step frame, external decoration will be improved.
2nd, adopt the material such as steel pipe, fastener, with triangle as cell cube [hound angle be not more than 30 °, highly (step pitch)
It is not more than 1.5 meters, all rod members of triangle are socketed firmly by cross bar and fastener and body of wall] set up mould bases of encorbelmenting；Will during calculating
Rod member fastener connect be reduced to hinged, by internal force calculate find out the larger component of stress and node, take corresponding reinforcement technique
Measure.During the construction of vestibule beam concrete, two main Cantilever Beams of basecoat are temporarily connected at expansion joint, and suitably steel is joined in increasing
Muscle, thus changing the stress of component, improves the bearing capacity during structure construction temporarily, with the operation of vestibule template construction
Platform bears upper load jointly, reduces vestibule template construction operating platform construction loads；After construction terminates, treat that vestibule is encorbelmented
Beam concrete cuts the concrete at expansion joint after reaching design strength, so that structure on two sides part is disconnected, revert to original design stress.
Vestibule bottom and both sides shear wall concrete strength grade improve one-level, to improve gallery structure early strength and carrying
Power；Suitably postpone the vestibule superstructure concreting time, treat that bottom member concrete reaches some strength (design strength
More than 70%) pour superstructure concrete after again.The utilization of steel pipe overhanging type truss operating platform：Simple and flexible, easy to operate, apply
Work preparation is easier to, and is not necessary to process place and Secondary Transport, all material all can have enough to meet the need, be conducive to construction site management and
Cost-effective.Operating platform has enough strength and stabilities, and steel pipe truss after concreting, survey through level gauge by support body
Amount is not subjected to displacement.This comprehensive benefit：Be conducive to civilized construction as decoration of exterior wall, the live placing of material area of minimizing
Management.Fig. 1 sets up schematic diagram for vestibule template construction operating platform
Specific embodiment
Reinforced concrete gallery structure sequence of construction
Gallery structure formwork-support operating platform sets up → and gallery structure construction → vestibule expansion and contraction beam concrete cuts, flexible
Seam reinforcement cuts off → gallery structure form removable → gallery structure formwork-support operating platform dismounting
Gallery structure formwork-support operating platform is set up
Set up technological process
Wall pipe box out, inclined support bar bearing hole to be provided → installation horizon bar → installation wall connecting rod → installation hound in length and breadth
→ draw hang steel wire rope → peripherally install safety net → by from bottom to top, by inner and outer principle of temporal sequence, treat 1 step triangular element
Body is installed after terminating, and sets up upwards in proper order to the laying of operating platform closure → scaffold board further in accordance with said sequence.
1) wall pipe box out, inclined support bar bearing hole to be provided
After shear force wall reinforcing steel bar colligation is complete, reserves wall pipe hole, use tub using φ 60 pipe according to scheme in shear wall
Reserved bearing；
2) horizon bar in length and breadth is installed
Pass vertical equity bar from reserved wall pipe hole, set up inner side transverse horizontal bar in shear wall both sides, put up
Set up transverse horizontal bar afterwards from inside to outside successively.
3) wall connecting rod is installed
It is connected with horizon bar right-angle coupler through walls with horizontal steel tube inside shear wall, increase by one outside right-angle coupler
Individual antiskid fastener.
4) hound is installed
Hound is installed inside the horizon bar by wall, bottom is stretched in reserved bearing, is connected with horizon bar with fastener, phase
Adjacent hound length staggers not little by 500.
5) draw and hang steel wire rope
Formwork-support has been taken post-tensioning and has been hung steel wire rope, and steel wire rope should keep straight, increases the safety stock of formwork-support.
6) safety net is peripherally installed
Safety net is hanged up in time outside formwork-support.
7) press from bottom to top, by inner and outer principle of temporal sequence, after 1 step triangular elements are installed and terminated, further in accordance with upper
State order to set up upwards in proper order to operating platform closure.
Gallery structure is constructed
Construction process：Vertical rod I-steel laying, shuttering supporting set up, vestibule formwork erection, beam steel bar colligation, vestibule beam side
Mould, plate formwork erection, gallery structure beam concreting, vestibule Bars In Poured Concrete Slab reinforcing bar binding, vestibule Bars In Poured Concrete Slab concrete placings, vestibule concrete
Maintenance, last layer gallery structure template, reinforcing bar, concrete construction
Vestibule expansion and contraction beam concrete cuts, expansion joint reinforcement cuts off
After vestibule concrete reaches design strength, the interim beam expansion joint concrete connecting can be cut, and the reinforcing bar of increase is cut off.
Gallery structure form removable
Vestibule concrete reaches design strength and top two-layer vestibule concrete is constructed after terminating, and bottom shuttering supporting and template can be opened
Begin to remove.
Gallery structure formwork-support operating platform is removed
Treat that vestibule bottom finishing finishes, the operation of gallery structure formwork-support can start platform removal.
Main points of operation
Main points set up by operating platform
1) it is to prevent fastener sliding at node, cause system variant, must be in the inner side of horizontal bar node, vertical vertical rod and tiltedly
The lower mouth (i.e. node may produce the side of direction of displacement) of support node adopts diesis fastener, to improve the resistant slide at node
Ability.
2) coupling position should avoid positioned at rod member tensile region as far as possible, to the tension force rod with sleeve couple spreading
Part, additional short steel pipes bind at node, overlap joint siding-to-siding block length is not preferably less than 1m, and both sides respectively must not be less than 2 rotary buckles,
Joint on same plane preferably mutually staggers a cell cube, to improve the breakout capacity of node.
3) the reserved opening position on shear wall, absolute altitude must accurately be embarked on journey, deviation cannot be greater than 25mm in length and breadth.Shearing
When wall concrete strength reaches 70% and is more than C25, support body construction can be carried out.
Bottom gallery structure construction point
1) gallery structure concrete in bottom is constructed at twice, and beam, plate concrete separately pour, and construction joint is located at 50 under Bars In Poured Concrete Slab.
2) the main horizontal beam of the longitudinal direction of bottom gallery structure connects increases by 5 Φ 25 reinforcing bar [2 Φ 25 (on)+3 Φ 25 (under)], adopts
With colligation overlap joint, after gallery structure pours, intensity can disconnect after reaching design strength this beam.
3) gallery structure concrete placings direction should from inside to outside and both sides are symmetrically poured；
4) covered with thin film, straw bag in time after the final set of gallery structure concrete and carry out heat and moisture preserving maintenance；
5) strength grade of concrete of bottom gallery structure improves one-level, so that concrete is reached early by force to improve bearing capacity,
The concrete on upper strata can must be constructed after the concrete strength of bottom vestibule reaches 75%.
Main points removed by operating platform
1) remove that all construction finishes in the finishing such as vestibule curtain wall and furred ceiling, and qualified by inspection after carry out.
2) check the clip contact points on support body before removing comprehensively, according to inspection result to after tear open loosening rod member, fastener
Deng first being reinforced, to ensure the safety in demolishing process.
3) debris on cleaning support body and the circulation material such as unnecessary scaffold board, steel pipe, use in time tower crane handling to arrive specified
Place, forbids parabolic.
4) dismounting order should be contrary with setting up order, and synchronization from top to bottom is carried out, and forbids up and down operation simultaneously, often removes one
After step frame, external decoration will be improved.
The technique effect of this patent, taking Wuxi east Times Square engineering as a example, construction area 49535M2, B1,
34 layers on the ground (inclusion motor house), totally three layers of podium, engineering peak is 120.90M, and facade is in " H " type, two high buildings 9m apart,
At absolute altitude+76.20m, by 26 layers of cantilever designs (no plate is made up of horizontal beam, post, cant beam), 27-32 layer is linked to be one
Body.High-altitude formwork-support construction skybridge structure is set up using steel tube fastener.
Direct economic benefit calculates：
It is computed setting up falsework than using steel truss formwork saving expense using steel tube fastener：59000Unit；
Comprehensive benefit
The utilization of steel pipe overhanging type truss operating platform：Simple and flexible, easy to operate, preparation of construction work is easier to, no
Must processing place and Secondary Transport, all material all can have enough to meet the need, and be conducive to construction site management and cost-effective.Operating platform has
There are enough strength and stabilities, after concreting, support body is not subjected to displacement steel pipe truss through level gauge measurement.This
Comprehensive benefit：Be conducive to modern-style construction as decoration of exterior wall, the live placing of material area of minimizing.Accelerate project progress,
Ensure high-altitude reinforced concrete gallery structure and main building synchronous construction.
Embodiment 2
Zhengjiang City Vinh Long city square engineering 1# building overall floorage 36805M2, B1,28 layers on the ground, knot cut by frame
Structure, this engineering design modern design, is top disjunctor scheme, and engineering peak is 88.9m.Engineering construction facade is in "door" type,
Two high buildings 8.260-11.60m apart, at 19 layers of absolute altitude+54.5m, by 20 layers of large cantilever gallery structures by 20～28 layers
Be connected, more than 20 layers gallery structure loads by wide by 650 (500), high by 2400 (root)～900 (end), encorbelment 3514,
3860th, three of 5340 symmetrical large cantilever beam supportings；It is provided with the wide movement joint of spacing 250 between large cantilever beam termination；20 layers big
Gallery structure concrete placings of encorbelmenting construction completes, and all goes well in work progress.
Embodiment 3
Wuxi City Five Love home 1# building overall floorage 32800M2, B1,26 layers on the ground, frame-shear structure, this engineering
Positioned at Wuxi City people road and Five Love road infall, design model is novel, is top disjunctor scheme, engineering roofing framework peak
For 88.8m.Engineering construction facade is in " H " type, and two high buildings 9m apart, at 15 layers of absolute altitude+49.5m, by 15 layers of large cantilever
15～24 layers are connected by gallery structure, all go well in work progress.
Claims (7)
1. a kind of high-altitude reinforced concrete gallery structure triangle steel pipe encorbelment mould bases construction technology it is characterised in that：Walk including following
Suddenly；
A gallery structure formwork-support operating platform is set up,
1) wall pipe box out, inclined support bar bearing hole to be provided
After shear force wall reinforcing steel bar colligation is complete, reserved using the reserved wall pipe hole of φ 60 pipe, with tub according to scheme in shear wall
Bearing；
2) horizon bar in length and breadth is installed
Pass vertical equity bar from reserved wall pipe hole, shear wall both sides set up inner side transverse horizontal bar, after putting up by
In outwards set up transverse horizontal bar successively；
3) wall connecting rod is installed
It is connected with horizon bar right-angle coupler through walls with horizontal steel tube inside shear wall, increase by one outside right-angle coupler and resist
Slide fastener part；
4) hound is installed
Hound is installed inside the horizon bar by wall, bottom is stretched in reserved bearing, is connected with horizon bar with fastener, adjacent oblique
Strut length staggers not little 500mm；
5) draw and hang steel wire rope
Formwork-support has been taken post-tensioning and has been hung steel wire rope, and steel wire rope should keep straight, increases the safety stock of formwork-support；
6) safety net is peripherally installed
Safety net is hanged up in time outside formwork-support；
7) press from bottom to top, by inner and outer principle of temporal sequence, after 1 step triangular elements are installed and terminated, further in accordance with above-mentioned suitable
Sequence is set up in proper order upwards to operating platform closure；
B gallery structure is constructed
Construction process：Vertical rod I-steel laying, shuttering supporting set up, vestibule formwork erection, beam steel bar colligation, vestibule beam side,
Plate formwork erection, gallery structure beam concreting, vestibule Bars In Poured Concrete Slab reinforcing bar binding, vestibule Bars In Poured Concrete Slab concrete placings, vestibule concrete are supported
Shield, last layer gallery structure template, reinforcing bar, concrete construction
C vestibule expansion and contraction beam concrete cuts, expansion joint reinforcement cuts off
After vestibule concrete reaches design strength, the interim beam expansion joint concrete connecting can be cut, and the reinforcing bar of increase is cut off；
D gallery structure form removable
Vestibule concrete reaches design strength and top two-layer vestibule concrete is constructed after terminating, and bottom shuttering supporting and template can start to tear open
Remove
E gallery structure formwork-support operating platform is removed
Treat that vestibule bottom finishing finishes, the operation of gallery structure formwork-support can start platform removal.
2. high-altitude according to claim 1 reinforced concrete gallery structure triangle steel pipe is encorbelmented mould bases construction technology, its feature
It is：Adopt diesis fastener in operating platform is set up, to improve the resistant slide ability at node；Coupling position should be use up
Amount avoids positioned at rod member tensile region, and to the tension stressed member with sleeve couple spreading, at node, additional short steel pipes bind, takes
Connect siding-to-siding block length and be not preferably less than 1m, both sides respectively must not be less than 2 rotary buckles, joint at grade preferably mutually staggers one
Individual cell cube, to improve the breakout capacity of node；Reserved opening position on shear wall, absolute altitude must accurately be embarked on journey, partially in length and breadth
Difference cannot be greater than 25mm；When shear wall concrete strength reaches 70% and is more than C25, support body construction can be carried out.
3. high-altitude according to claim 1 reinforced concrete gallery structure triangle steel pipe is encorbelmented mould bases construction technology, its feature
It is：In the construction of bottom gallery structure, bottom gallery structure concrete is constructed at twice, and beam, plate concrete separately pour, and construction joint is located at
At 50 under Bars In Poured Concrete Slab；The main horizontal beam of longitudinal direction of bottom gallery structure connects increases by 5 Φ 25 reinforcing bar, and 2 Φ 25 reinforcing bar is located at longitudinally
Above main horizontal beam, 3 Φ 25 reinforcing bar is located at longitudinally below main horizontal beam, using colligation overlap joint, this beam after gallery structure pours,
Intensity can disconnect after reaching design strength；Gallery structure concrete placings direction should from inside to outside and both sides are symmetrically poured；Even
Covered with thin film, straw bag in time after corridor Concrete In Structures final set and carry out heat and moisture preserving maintenance；Concrete strength of bottom gallery structure etc.
Level improves one-level, so that concrete is reached early by force to improve bearing capacity, the concrete on upper strata must treat the strong concrete of bottom vestibule
Degree can be constructed after reaching 75%.
4. high-altitude according to claim 1 reinforced concrete gallery structure triangle steel pipe is encorbelmented mould bases construction technology, its feature
It is：In operating platform is removed, remove and all construct and finish in vestibule curtain wall and furred ceiling finishing, and qualified by inspection laggard
OK；Check the clip contact points on support body before dismounting comprehensively, according to inspection result to after the loosening rod member torn open, fastener first carry out plus
Gu, to ensure the safety in demolishing process；Debris on cleaning support body and unnecessary scaffold board, steel pipe circulation material, use in time
Tower crane handling, to appointed place, forbids parabolic；Dismounting order synchronously should be carried out from top to bottom with to set up order contrary, forbid on
Under operation simultaneously, after often removing a step frame, external decoration will be improved.
5. the high-altitude reinforced concrete gallery structure triangle steel pipe according to claim 1 or 2 or 3 or 4 encorbelment mould bases construction work
Skill it is characterised in that：Using steel pipe, fastener material, mould bases of encorbelmenting is set up for cell cube with triangle, hound angle is not more than
300, height or step pitch is not more than 1.5 meters, all rod members of triangle are socketed firmly by cross bar and fastener and body of wall；Will during calculating
Rod member fastener connect be reduced to hinged, by internal force calculate find out the larger component of stress and node, take corresponding reinforcement technique
Measure.
6. the high-altitude reinforced concrete gallery structure triangle steel pipe according to claim 1 or 2 or 3 or 4 encorbelment mould bases construction work
Skill it is characterised in that：During the construction of vestibule beam concrete, two main Cantilever Beams of basecoat are temporarily connected at expansion joint, and fit
When reinforcing bar is joined in increasing, thus changing the stress of component, improve the bearing capacity during structure construction, with vestibule template temporarily
Construction operation platform bears upper load jointly, reduces vestibule template construction operating platform construction loads；After construction terminates,
Cut the concrete at expansion joint after vestibule Cantilever Beams concrete reaches design strength, so that structure on two sides part is disconnected, revert to former setting
Meter stress.
7. the high-altitude reinforced concrete gallery structure triangle steel pipe according to claim 1 or 2 or 3 or 4 encorbelment mould bases construction work
Skill it is characterised in that：Vestibule bottom and both sides shear wall concrete strength grade improve one-level, with improve gallery structure early strength and
Bearing capacity；Suitably postpone the vestibule superstructure concreting time, treat that bottom member concrete reaches some strength, design is strong
Superstructure concrete is poured again after degree more than 70%.
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| CN202227476U (en) * | 2011-09-15 | 2012-05-23 | 浙江城建建设集团有限公司 | High-altitude large-span overhung corridor-type reinforced concrete structure |
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|---|---|---|---|---|
| JPH0726723A (en) * | 1993-07-15 | 1995-01-27 | Toda Constr Co Ltd | Construction of connecting corridor |
| JPH07127180A (en) * | 1993-11-05 | 1995-05-16 | Kajima Corp | Method of assembling construction of roof structure of connecting corridor and jig for assembling roof structure of connecting corridor |
| CN201144515Y (en) * | 2008-01-04 | 2008-11-05 | 中国建筑第八工程局广州分公司 | Steel structure high altitude construction platform |
| CN102444203A (en) * | 2011-09-15 | 2012-05-09 | 浙江城建建设集团有限公司 | High-altitude long-span overhanging corridor type reinforced concrete structure and construction method |
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| CN102535845A (en) * | 2012-02-14 | 2012-07-04 | 浙江省建工集团有限责任公司 | Construction method of bearing frame of corridor structure |
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