CN105484165B - Integrated prestress tensioning frame structure and manufacturing and using methods thereof - Google Patents

Integrated prestress tensioning frame structure and manufacturing and using methods thereof Download PDF

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Publication number
CN105484165B
CN105484165B CN201610020139.1A CN201610020139A CN105484165B CN 105484165 B CN105484165 B CN 105484165B CN 201610020139 A CN201610020139 A CN 201610020139A CN 105484165 B CN105484165 B CN 105484165B
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China
Prior art keywords
tensioning
frame structure
plate
chain block
prestressed stretch
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CN201610020139.1A
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Chinese (zh)
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CN105484165A (en
Inventor
周联英
蒋吉清
廖娟
丁智
孙苗苗
张茹
虞兴福
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Zhejiang University City College ZUCC
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Zhejiang University City College ZUCC
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Priority to CN201610020139.1A priority Critical patent/CN105484165B/en
Publication of CN105484165A publication Critical patent/CN105484165A/en
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges

Abstract

The invention provides an integrated prestress tensioning frame structure which is used for tension construction of beam slabs by a post-tensioning method. The integrated prestress tensioning frame structure is a square frame, and moving wheels are installed at the bottom of the square frame; a clapboard is arranged in the middle of the square frame so as to divide the square frame into a left part and a right part, wherein the left part is a tensioning room, and the right part is an operating room; in the tensioning room, a lifting beam is welded at the bottom of a longitudinal beam at the top, a chain block is installed on the lifting beam, the chain block is connected with a jack, and a guard plate is arranged in the rear of the tensioning room; in the operating room, a bottom plate is arranged at the bottom of the frame, a top plate is arranged at the top, and a folding operating desk is installed on the clapboard; and a special fixing frame for fixedly placing an intelligent tensioning instrument is also arranged on the bottom plate, thereby ensuring that the intelligent tensioning instrument does not generate displacement in a moving process. The integrated prestress tensioning frame structure is simple, convenient to manufacture and low in cost; the operating room and the tensioning room form the integrated frame, so that the frame structure is convenient to move and simple in operation; and the guard plate and the clapboard are arranged, so that the safety in the construction process is effectively guaranteed on the premise that the line of sight of an operator in the operating room is not blocked.

Description

Integrated prestressed stretch-draw frame structure and its making and use method
Technical field
The present invention relates to stretching construction technical field, and in particular to a kind of integrated prestressed stretch-draw frame structure and its system Make and using method.
Background technology
At present, prestressed reinforced concrete construction because its section is little, big rigidity, crack resistance and the advantages of good endurance, in building It is widely applied in engineering field.Wherein, the Fabricated Beam-Slab of science of bridge building mostly adopts post stretching precasting process, that is, exist After beam slab concrete strength reaches some strength, presstressed reinforcing steel is penetrated in duct, it is pre- as supporting tensioning using concrete component Then presstressed reinforcing steel is anchored to form permanent pre-applied force by stress rib with special anchorage.It is well known that applying prestressed stretching machine One of tool jack, the larger (200kg or so of weight), precasting yard portal frame need to be adopted when changing cable stretching or by attached word of helping others Type support is shifted using chain block.Meanwhile, for avoid in stretching process may be because disconnected rope, stripped thread phenomenon cause to hurt sb.'s feelings Event, inaccurate people from station in beam two ends front during rule of operation regulation tensioning, operator should be stood in the side of prestress steel twist line position Face, beam-ends should be baffled.
In conventional construction, jack changes the prefabricated portal frame of the more employings of Suo Yiwei, causes portal frame turnover to utilize Rate is low or beam slab tension process by door frame using affecting.And beam-ends baffle plate typically adopts easy triangular supports baffle plate, bear Power is low.
Meanwhile, the state-of-the-art process intelligent tensioning in country prestressed stretch-draw field at present is widely applied.Intelligence Tensioning is referred to and is controlled not against workman manually, and utilizes control with computational intelligence technology, is automatically brought into operation by instrument, completes steel strand The stretching construction of line.Because of its high accuracy and stability, interference from human factor can be excluded completely, tensioning construction is effectively guaranteed Quality.But limited by field condition, the instrument for intelligent tensioning is particularly computer, often can only be looked for local placement temporarily, Expose to the weather, work under bad environment.
The content of the invention
It is an object of the invention to provide a kind of integrated prestressed stretch-draw frame structure and its making and use method, solution Certainly during post stretching beam slab intelligent tensioning, the very heavy Suo Yiwei that takes one's place lifts by crane the corollary equipment such as problem and intelligent tensioning instrument and computer Protection safety problem in placement issue, and stretching process.
For realizing above-mentioned technical purpose, the present invention is adopted the following technical scheme that:
A kind of integrated prestressed stretch-draw frame structure, it is in constructing for post stretching beam slab intelligent tensioning, generally cubic Body framework, is welded by column and the horizontal beam being connected between column, and the horizontal beam includes crossbeam and longeron, its feature It is:Movable pulley is installed on the bottom column correspondence position of the tetragonal body framework;The centre of the tetragonal body framework two Dividing plate is provided between column, and tetragonal body framework is divided into left and right two parts by the dividing plate, and the left side is that, between tensioning, the right is operation Between;In between the tensioning, at top, piece horizontal lifting beam of the bottom welding of two longerons, is provided with handss on the lifting beam Calabash is drawn, the chain block is horizontal from before between tensioning by linking up with connection tensioning jack, precast beam to be tensioned To entrance, between tensioning behind set up defences guard;In the operation room, base plate, framework is equipped with base of frame horizontal beam Top is provided with top board, is provided with folding operation platform on the dividing plate;It is additionally provided with the base plate for fixed in position intelligent tensioning The special fixed frame of instrument, it is ensured which is not subjected to displacement in moving process.
Used as preferred technical scheme, the dividing plate is punching steel net plate, and its thickness range is 10~20mm, mesh diameter Scope is 10~40mm.
Preferably, connected by hanging ring between the lifting beam and chain block;The hanging ring is sleeved on lifting beam On, the bottom of hanging ring is hung with chain block.
Preferably, the folding operation platform includes operating platen and the collapsible supporting leg on operation platen bottom surface, The other end of the collapsible supporting leg is fixed on the wall of dividing plate.
Preferably, the operation platen is steel plate or the plank with reinforcing frame.
Preferably, the top board and base plate are steel plate, in the range from 5~20mm, the thickness range of the shoulder guard For 10~20mm.
Preferably, the height of tetragonal body framework 500mm at least high than the maximum height of precast beam, it is vertical between tensioning Add 200mm to width of the length for precast beam, the longitudinal length of operation room is 1000mm;The transverse width model of tetragonal body framework Enclose for 1000mm.
Preferably, the crossbeam, longeron and column adopt 14# channel-section steels;The lifting beam adopts 14# steel I-beams.
The present invention also provides the preparation method of above-mentioned integrated prestressed stretch-draw frame structure, comprises the steps:
Step one, material prepare:Cutting groove steel cuts steel plate and forms protective baffle plate, cut for longeron, crossbeam and column Punched-plate forms dividing plate, and its size is all determined according to the sectional dimension of precast beam to be tensioned;
Step 2, welding tetragonal body framework:Carry out body tetragonal body frame welding assembled, pacify on bottom column correspondence position 6 movable pulleys are filled, then dividing plate is set between middle two root posts, be divided into left and right two parts, the left side to be tetragonal body framework Between tensioning, the right is operation room;
Step 3, tensioning equipment is installed between tensioning:Between tensioning, the bottom welding one of two longerons in top is horizontal Lifting beam, arranges hanging ring connection thereon and installs chain block, and bottom is by linking up with connection jack;
Step 4, operation room arrange corollary equipment:Base plate is laid in clipping room bottom, and top laying top board, on dividing plate Folding operation platform is installed;
Step 5, special fixed frame for fixed in position intelligent tensioning instrument is set on operation room base plate, it is ensured which is moving It is not subjected to displacement during dynamic, so far, integrated prestressed stretch-draw frame structure is prepared and completed.
Additionally, the present invention also provides the using method of above-mentioned integrated prestressed stretch-draw frame structure, it is characterised in that:
Step one, frame structure it is in place:The integrated tensioning frame structure for promoting processing assembly to complete, is pacified using bottom The movable pulley of dress is dragged to the front end of precast beam to be tensioned, is made just to beam slab between tensioning, and now operation room is right positioned at beam-ends Side;
Step 2, operation room arrangement:Intelligent tensioning instrument is placed on the special fixed frame on operation room base plate, open every The folding operation platform installed on plate, lays computer thereon, and the data letter carried out between computer, intelligent tensioning instrument and jack connects Connect;
Step 3, jack are in place:Using the chain block hook connection jack being installed on lifting beam, using pulling Jack is displaced to before precast beam prestressing tendon to be tensioned and fixed thereto by calabash;
Step 4, stretching process:Operator are located at operation room, carry out Intelligent Instrument operation and computer control, carry out in real time Record and data wire are transmitted;
Beam is changed in step 5, displacement:After the completion of a branch of tensioning, laterally moving up and down for jack is carried out using chain block Rope is changed in position, until this film girder plate prestress beam is fully completed;
Step 6, jack is positioned on the base plate between tensioning, promotes whole tensioning frame structure to be moved to down a piece of Precast beam position to be drawn, repeat the above steps one are to step 5, until completing whole beam slab tensioning work.
Top between tensioning of the present invention sets chain block and changes Suo Yiwei for jack, and backboard inlays backboard and also serve as protection Steel plate, the correct frame of beam sides are set between intelligent operation, for placing intelligent tensioning instrument and computer, compared with prior art, The present invention it is a technical advantage that:
1st, it is mobile support, simple structure, it is easy to processing and conveniently moving;
2nd, the operation room that can place intelligent tensioning instrument and computer is provided with, construction environment is optimized, is integrated, applied When work point is shifted, it is only necessary to promote crosshead to shift, convenient transfer, during use, need not carry out removing for any instrument and equipment Move, you can directly constructed, it is time saving and energy saving;
3rd, protection effect is good, and between one side tensioning, back is inlayed backboard and also serves as shoulder guard, and solid reliability meets related rule Model is required.Punching steel plate is set between another aspect operation room and tensioning, is not stopping operator's sight line in operation room Under the premise of, the safety in effective guarantee operator's work progress, protection are good;
4th, in addition to movable pulley, special crossbeam small size component of remaining material etc., using engineering current material, can be abundant Using channel-section steel clout, and fully can be reclaimed after completing, input cost is few.
Description of the drawings
Fig. 1 is the dimensional structure diagram of integrated prestressed stretch-draw frame structure according to the present invention;
Fig. 2 is the overlooking the structure diagram of integrated prestressed stretch-draw frame structure according to the present invention;
Fig. 3 is the facade structures schematic diagram of integrated prestressed stretch-draw frame structure according to the present invention.
Reference:2- crossbeams, 1- longerons, 3- lifting beams, 4- columns, 5- movable pulleys, 6- base plates, 7- protective baffle plates, 8- Chain block, 9- precast beams, 10- dividing plates, 11- bracing frames, 12- prestressing tendons, 13- top boards, 14- intelligent tensioning instrument, 15- foldings Folded operating board, 15.1- operation platens, 15.2- collapsible supporting legs, 16- hanging rings.
Specific embodiment
The principle and feature of the present invention are described below in conjunction with accompanying drawing, example is served only for explaining the present invention, and It is non-for limiting the scope of the present invention.
Such as Fig. 1~3, the present invention relates to a kind of integrated prestressed stretch-draw frame structure, for post stretching beam slab intelligently Draw in constructing, generally tetragonal body framework, be welded by column 4 and the horizontal beam being connected between column, the horizontal beam Including crossbeam 1 and longeron 2, it is characterised in that:Movable pulley 5 is installed on the bottom column correspondence position of the tetragonal body framework, Six roots of sensation column 4,6 movable pulleys of correspondence, are provided with dividing plate 10, the dividing plate between the middle two root posts of the tetragonal body framework altogether 10 is punching steel net plate, and its thickness range is 10~20mm, and mesh diameter scope is 10~40mm, and tetragonal body framework is split by which Into left and right two parts, the left side is that the right is operation room between tensioning;In between the tensioning, in the bottom welding of two longerons 2 in top A piece horizontal lifting beam 3, is provided with chain block 8, passes through between the lifting beam 3 and chain block 8 on the lifting beam 3 Hanging ring 16 connects;The hanging ring 16 is sleeved on lifting beam 3, and the bottom of hanging ring 16 is hung with chain block 8.The handss Calabash 8 is drawn to enter laterally from before between tensioning by linking up with connection tensioning jack, precast beam 9 to be tensioned, tensioning Between behind set up defences guard 7;In the operation room, base plate 6 is equipped with base of frame horizontal beam, frame roof is provided with top Plate 13, sunshine and rain resistant.Folding operation platform 15 is installed on the dividing plate 10, the folding operation platform 15 includes operating platen 15.1 and the collapsible supporting leg 15.2 on operation platen bottom surface, the other end of the collapsible supporting leg 15.2 be fixed on every On the wall of plate 10, the operation platen 15.1 is with the plank or steel plate for reinforcing frame.Be additionally provided with the base plate 6 for The special fixed frame of fixed in position intelligent tensioning instrument 14, it is ensured which is not subjected to displacement in moving process.
In frame structure material therefor, crossbeam 1, longeron 2 and the column 4 for constituting support adopts 14# channel-section steels, and top is used for The lifting beam 3 for installing chain block adopts 14# I-steel, protective baffle plate 7 and dividing plate 10 to adopt 1cm steel plates, makees baffle plate, type Steel, steel plate are adopted and are welded to connect.The height of tetragonal body framework 500mm at least high than the maximum height of precast beam 9, Longitudinal length between drawing adds 200mm for the width of precast beam 9, and the longitudinal length of operation room is 1000mm;Tetragonal body framework Lateral extent is 1000mm.
The present invention also provides the preparation method of above-mentioned integrated prestressed stretch-draw frame structure, comprises the steps:
Step one, material prepare:Cutting groove steel cuts steel plate and forms protective baffle plate 7 for longeron 2, crossbeam 1 and column 4, Cut punched-plate and form dividing plate 10, its size is all determined according to the sectional dimension of precast beam 9 to be tensioned;
Step 2, welding tetragonal body framework:Carry out body tetragonal body frame welding assembled, pacify on bottom column correspondence position 6 movable pulleys 5 are filled, and then dividing plate 10 is set between middle two root posts, tetragonal body framework is divided into into left and right two parts, the left side For, between tensioning, the right is operation room;
Step 3, tensioning equipment is installed between tensioning:Between tensioning, the bottom welding one of two longerons 2 in top is horizontal Lifting beam 3, arranges the connection of hanging ring 16 thereon and installs chain block 8, and bottom is by linking up with connection jack;
Step 4, operation room arrange corollary equipment:Base plate 6 is laid in clipping room bottom, and top laying top board 13, in dividing plate Folding operation platform 15 is installed on 10;
Step 5, set special fixed frame for fixed in position intelligent tensioning instrument 14 on operation room base plate 6, it is ensured that its It is not subjected to displacement in moving process, so far, integrated prestressed stretch-draw frame structure is prepared and completed.
Additionally, the present invention also provides the using method of above-mentioned integrated prestressed stretch-draw frame structure, it is characterised in that:
Step one, frame structure it is in place:The integrated tensioning frame structure for promoting processing assembly to complete, is pacified using bottom The movable pulley 5 of dress is dragged to the front end of precast beam 9 to be tensioned, is made just to beam slab between tensioning, and now operation room is positioned at beam-ends Right side;
Step 2, operation room arrangement:Intelligent tensioning instrument 14 is placed on the special fixed frame on operation room base plate 6, is beaten The folding operation platform 15 installed on dividing plate 10 is opened, computer is laid thereon, is carried out between computer, intelligent tensioning instrument 14 and jack Data letter connection;
Step 3, jack are in place:Using the hook connection jack of chain block 8 being installed on lifting beam 3, using handss Calabash is drawn to be displaced to jack before precast beam prestressing tendon 12 to be tensioned and fixed thereto;
Step 4, stretching process:Operator are located at operation room, carry out Intelligent Instrument operation and computer control, carry out in real time Record and data wire are transmitted;
Beam is changed in step 5, displacement:After the completion of a branch of tensioning, the horizontal up and down of jack is carried out using chain block 8 Rope is changed in displacement, until this film girder plate prestress beam is fully completed;
Step 6, jack is positioned on the base plate between tensioning, promotes whole tensioning frame structure to be moved to down a piece of Precast beam position to be drawn, repeat the above steps one are to step 5, until completing whole beam slab tensioning work.
The foregoing is only presently preferred embodiments of the present invention, not to limit the present invention, all spirit in the present invention and Within principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.

Claims (9)

1. a kind of preparation method of integrated prestressed stretch-draw frame structure, the integrated prestressed stretch-draw frame structure, use In the construction of post stretching beam slab intelligent tensioning, generally tetragonal body framework, by column(4)And the horizontal beam being connected between column It is welded, the horizontal beam includes crossbeam(1)And longeron(2), it is characterised in that:The bottom column pair of the tetragonal body framework Answer(5);Dividing plate is provided between the middle two root posts of the tetragonal body framework(10), the dividing plate (10)Tetragonal body framework is divided into into left and right two parts, the left side is that the right is operation room between tensioning;In between the tensioning, on top Two, portion longeron(2)Piece horizontal lifting beam of bottom welding(3), the lifting beam(3)On chain block is installed(8), The chain block(8)By linking up with the jack of connection tensioning, precast beam to be tensioned(9)It is horizontal from before between tensioning To entrance, between tensioning behind set up defences guard(7);In the operation room, base plate is equipped with base of frame horizontal beam (6), frame roof is provided with top board(13), the dividing plate(10)On folding operation platform is installed(15);The base plate(6)On also set Have for fixed in position intelligent tensioning instrument(14)Special fixed frame, it is ensured which is not shifted in moving process;
Characterized in that, comprising the steps:
Step one, material prepare:Cutting groove steel is for longeron(2), crossbeam(1)And column(4), cut steel plate and form protective baffle plate (7), cut punched-plate and form dividing plate(10), its size is all according to precast beam to be tensioned(9)Sectional dimension determine;
Step 2, welding tetragonal body framework:Carry out tetragonal body frame welding assembled, 6 are installed on bottom column correspondence position Movable pulley(5), then dividing plate is set between middle two root posts(10), tetragonal body framework is divided into into left and right two parts, the left side For, between tensioning, the right is operation room;
Step 3, tensioning equipment is installed between tensioning:Two longerons in top between tensioning(2)Bottom welding one it is horizontal rise Hanging beam(3), hanging ring is set thereon(16)Chain block is installed in connection(8), chain block bottom is by linking up with connection jack;
Step 4, operation room arrange corollary equipment:Lay base plate in operation room bottom(6), top laying top board(13), in dividing plate (10)Upper installation folding operation platform(15);
Step 5, in operation room base plate(6)On set for fixed in position intelligent tensioning instrument(14)Special fixed frame, it is ensured that its It is not shifted in moving process, so far, integrated prestressed stretch-draw frame structure is prepared and completed.
2. the preparation method of integrated prestressed stretch-draw frame structure according to claim 1, it is characterised in that:It is described every Plate(10)For punching steel net plate, its thickness range is 10~20mm, and mesh diameter scope is 10~40mm.
3. the preparation method of integrated prestressed stretch-draw frame structure according to claim 1, it is characterised in that:Described Hanging beam(3)With chain block(8)Between pass through hanging ring(16)Connection;The hanging ring(16)It is sleeved on lifting beam(3)On, hang Link(16)Bottom be hung with chain block(8).
4. the preparation method of integrated prestressed stretch-draw frame structure according to claim 1, it is characterised in that:The folding Folded operating board(15)Including operation platen(15.1)With the collapsible supporting leg on operation platen bottom surface(15.2), it is described can Folding landing leg(15.2)The other end be fixed on dividing plate(10)Wall on.
5. the preparation method of integrated prestressed stretch-draw frame structure according to claim 4, it is characterised in that:The behaviour Make platen(15.1)For steel plate or with the plank for reinforcing frame.
6. the preparation method of integrated prestressed stretch-draw frame structure according to claim 1, it is characterised in that:The top Plate(13)And base plate(6)Steel plate is, thickness range is 5~20mm;The protective baffle plate(7)Thickness range be 10~ 20mm。
7. the preparation method of integrated prestressed stretch-draw frame structure according to claim 1, it is characterised in that:Described four The height of cube framework at least compares precast beam(9)The high 500mm of maximum height, the longitudinal length between tensioning be precast beam (9)Width add 200mm, the longitudinal length of operation room is 1000mm;The transverse width of tetragonal body framework is 1000mm.
8. the preparation method of integrated prestressed stretch-draw frame structure according to claim 1, it is characterised in that:The horizontal stroke Beam(1), longeron(2)And column(4)It is 14# channel-section steels;The lifting beam(3)For 14# steel I-beams.
9. the using method of integrated prestressed stretch-draw frame structure, the integrated prestressed stretch-draw frame structure, after being used for Open in the construction of method beam slab intelligent tensioning, generally tetragonal body framework, by column(4)And the horizontal beam welding being connected between column Form, the horizontal beam includes crossbeam(1)And longeron(2), it is characterised in that:The bottom column correspondence position of the tetragonal body framework Put and movable pulley is installed(5);Dividing plate is provided between the middle two root posts of the tetragonal body framework(10), the dividing plate(10) Tetragonal body framework is divided into into left and right two parts, the left side is that the right is operation room between tensioning;In between the tensioning, at top two Root longeron(2)Piece horizontal lifting beam of bottom welding(3), the lifting beam(3)On chain block is installed(8), it is described Chain block(8)By linking up with the jack of connection tensioning, precast beam to be tensioned(9)Laterally enter from before between tensioning Enter, between tensioning behind set up defences guard(7);In the operation room, base plate is equipped with base of frame horizontal beam(6), frame Top of the trellis is provided with top board(13), the dividing plate(10)On folding operation platform is installed(15);The base plate(6)On be additionally provided with for Fixed in position intelligent tensioning instrument(14)Special fixed frame, it is ensured which is not shifted in moving process;
Characterized in that, comprising the steps:
Step one, frame structure it is in place:The integrated prestressed stretch-draw frame structure for promoting processing assembly to complete, using bottom The movable pulley of installation(5)Drag to precast beam to be tensioned(9)Front end, make between tensioning just to precast beam, now operate Between be located at beam-ends on the right side of;
Step 2, operation room arrangement:By intelligent tensioning instrument(14)It is placed in operation room base plate(6)On special fixed frame on, beat Open dividing plate(10)The folding operation platform of upper installation(15), computer is laid thereon, carries out computer, intelligent tensioning instrument(14)With it is very heavy Data signal connection between top;
Step 3, jack are in place:Using being installed on lifting beam(3)On chain block(8)By linking up with connection jack, profit Jack is displaced to into precast beam prestressing tendon to be tensioned with chain block(12)It is front and fixed thereto;
Step 4, stretching process:Operator are located at operation room, carry out the operation of intelligent tensioning instrument and computer control, carry out in real time Record and data transfer;
Beam is changed in step 5, displacement:After the completion of a branch of tensioning, using chain block(8)Carry out the upper and lower of jack and left and right is horizontal Beam is changed in displacement, until the whole tensioning of this film girder plate prestress beam is completed;
Step 6, jack is positioned on the base plate between tensioning, promotes whole tensioning frame structure to be moved to down a piece of treat Precast beam position is drawn, repeat the above steps one are to step 5, until completing whole beam slab tensioning work.
CN201610020139.1A 2016-01-13 2016-01-13 Integrated prestress tensioning frame structure and manufacturing and using methods thereof Expired - Fee Related CN105484165B (en)

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Publication number Priority date Publication date Assignee Title
CN109262822B (en) * 2018-10-29 2020-06-23 江苏华江祥瑞现代建筑发展有限公司 A prestressing force collinear production line for producing concrete slab, concrete beam

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CN202053373U (en) * 2011-03-30 2011-11-30 四川路桥建设股份有限公司 Precast beam tensioning flat cart for precast yard
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KR20130068384A (en) * 2011-12-15 2013-06-26 우경기술주식회사 Psc girder which combined tension applied a system and this construction technique
CN204249072U (en) * 2014-11-28 2015-04-08 中国建筑第六工程局有限公司 For stretch-draw and the baffle plate integrating device of precast beam stretch-draw
CN205369044U (en) * 2016-01-13 2016-07-06 浙江大学城市学院 Integration prestressing force stretch -draw frame construction

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201873949U (en) * 2010-11-11 2011-06-22 中铁十三局集团电务工程有限公司 Bride prestress stretch-draw trolley
CN202053373U (en) * 2011-03-30 2011-11-30 四川路桥建设股份有限公司 Precast beam tensioning flat cart for precast yard
CN202090291U (en) * 2011-05-20 2011-12-28 中国十九冶集团有限公司 Tensioning support
KR20130068384A (en) * 2011-12-15 2013-06-26 우경기술주식회사 Psc girder which combined tension applied a system and this construction technique
CN204249072U (en) * 2014-11-28 2015-04-08 中国建筑第六工程局有限公司 For stretch-draw and the baffle plate integrating device of precast beam stretch-draw
CN205369044U (en) * 2016-01-13 2016-07-06 浙江大学城市学院 Integration prestressing force stretch -draw frame construction

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