CN110067201A - A kind of movable type tensioning platform and its application method - Google Patents
A kind of movable type tensioning platform and its application method Download PDFInfo
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- CN110067201A CN110067201A CN201910195935.2A CN201910195935A CN110067201A CN 110067201 A CN110067201 A CN 110067201A CN 201910195935 A CN201910195935 A CN 201910195935A CN 110067201 A CN110067201 A CN 110067201A
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- platform
- overhanging
- frame
- cage
- bent cap
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Abstract
A kind of mobile tensioning platform of the invention and its application method, are related to Municipal Engineering Construction equipment technical field.Aiming at the problem that existing fixed tensioning platform is unable to satisfy construction period abnormal shape bent cap diversity construction technology.It includes: that overhanging adjusts frame, it includes the stress platform for being set to above box beam top plate and crossing protective fence, bottom is equipped with the sliding platform of idler wheel, the connection framework being vertically fixed between stress platform and sliding platform, one one end of ladder access is connect with stress platform, its other end is connect with sliding platform, and overhanging adjusts frame can be along box beam top plate longitudinal sliding motion；Bottom basket is set to bent cap bottom, and bottom basket is equipped with top and bottom operating platform；Cage is vertically arranged on the outside of protective fence and its both ends adjusts frame with overhanging respectively, the end bolt of bottom basket is connect, and the overhanging being connected as one adjusts frame, bottom basket and cage and the outer profile of bridge end is adapted；At least one clump weight is held on the one end of sliding platform far from cage.
Description
Technical field
The present invention relates to Municipal Engineering Construction equipment technical field, in particular to a kind of mobile tensioning platform and its use
Method.
Background technique
After urban development has certain scale, road traffic congestion, building is intensive, and street is difficult to widen, and overpass can
With mitigation traffic density, conevying efficiency is improved, in addition, to avoid intercity highway (or railway) and All other routes plane
Intersect, save land used, overpass is also widely used.
When the height of overpass is not high, span is little, and when linear uncomplicated, the overpass of a large amount of uniform sizes uses standard
The prefabricated case beam of segment is assembled to be simultaneously installed on the form of construction work at the top of bent cap, and therefore, bent cap must have enough intensity and steady
Solidity after bent cap concrete strength reaches design requirement, carries out first time tensioning to its steel strand wires, right after pile equipment is in place
Steel strand wires carry out second of tensioning, and bent cap can reach enough intensity and stability, be after the completion of tensioning, slip casting, sealing off and covering anchorage
This, need to set up scaffold in bent cap position lower part large area and form fixed tensioning platform, be poured with implementing bent cap concrete
The prestressed stretch-draw of construction and steel strand wires is built, still, above-mentioned fixed tensioning platform is in the presence of structure is complicated, dismounting is difficult, counterweight
It is required that it is high, can not reuse, be not easy to the problems such as mobile, be unable to satisfy the multifarious construction work of construction period abnormal shape bent cap
Skill.
Summary of the invention
Aiming at the problem that existing fixed tensioning platform is unable to satisfy construction period abnormal shape bent cap diversity construction technology.This
The purpose of invention is to provide a kind of mobile tensioning platform and its application method, structure is simple, reliable performance, be convenient to mount and dismount,
It is reusable, and can satisfy the construction period multifarious construction technology of abnormal shape bent cap.
The technical solution adopted by the present invention to solve the technical problems is: it is a kind of movable type tensioning platform include:
Overhanging adjusts frame comprising is horizontally placed on above the box beam top plate of bridge and the stress for crossing protective fence is flat
Platform is set to box beam top plate top and bottom and is equipped with the sliding platform of idler wheel, is vertically arranged to the stress platform and institute
State the connection framework and ladder access one affixed between sliding platform and with the two, one end of the ladder access one and the stress platform
Connection, the other end of the ladder access one are connect with the sliding platform, and the overhanging adjusts frame can be along the box beam top plate
Longitudinal sliding motion；
Bottom basket, the bottom basket are set to the bottom of the bent cap, and the bottom basket is equipped with top operating platform and is set to
The bottom operating platform of the top operating platform lower part；
Cage, the cage be vertically arranged on the outside of the protective fence and its both ends respectively with the overhanging conditioning box
The end bolt connection of frame, the bottom basket, the stress platform, connection framework, bottom basket are parallel by least two panels with cage
And spaced truss, the frame body that the cross bar and Crossing brace being connected between truss described in adjacent two panels are formed by connecting, connection
The overhanging for an entirety adjusts frame, bottom basket and cage and the outer profile of bridge end is adapted；
At least one clump weight is held on one far from the cage that the overhanging adjusts the sliding platform of frame
End.
Preferably, the clump weight uses concrete block.
Preferably, the top operating platform of the bottom basket and bottom operating platform are laid with plank or steel plate, the bottom basket
The side of close bent cap be additionally provided with inclined ladder.
Preferably, the first vertical ladder of the connection stress platform and the bottom basket is equipped in the cage, it is described to hang
One end of the close bent cap of cage is additionally provided with the second vertical ladder.
Preferably, the stress platform, ladder access, vertical ladder and inclined ladder two sides are equipped with guardrail, and hang wire netting.
Preferably, at least two panels truss of the stress platform, connection framework, bottom basket and cage is welded by channel steel,
Cross bar between truss described in adjacent two panels is made of channel steel, and bridging is made of angle steel.
Preferably, it further includes at least two vertically arranged sunpenders, the bottom end of the sunpender through the bottom basket and by
Its bottom end is fixed in nut check, and the sliding platform or lid that overhanging adjusts frame are fixed on by nut check in the top of the sunpender
Top surface of the beam.
Preferably, the bottom of the bottom basket is additionally provided with a strengthening frame, and the strengthening frame is by two cross being arranged in a crisscross manner
Beam and two stringers are welded, and crossbeam bottom end through the strengthening frame and is fixed on by nut check in the bottom end of the sunpender.
In addition, steps are as follows the present invention also provides a kind of application method of mobile tensioning platform:
The overhanging that pre-production is completed is adjusted into frame, cage, bottom basket and is bolted and is assembled into mobile tensioning platform,
The movable type tensioning platform and the outer profile of bridge end are adapted, and the movable type tensioning stage+module is in place to bridge floor
Afterwards, clump weight is placed in the sliding platform end that overhanging adjusts frame, construction personnel enters the mobile tensioning platform and right
The steel wire bundle of present position bent cap end carries out second of prestressed stretch-draw, after prestressed stretch-draw, described in driving
Mobile tensioning platform longitudinally runs to the next section of bent cap position that will carry out second of prestressed stretch-draw, the shifting along box beam
After dynamic formula tensioning platform is in place, second of prestressed stretch-draw is carried out to the steel wire bundle of position bent cap end, repeatedly,
Until completing second of prestressed stretch-draw to the steel wire bundle in entire bent cap.
Preferably, after the mobile tensioning platform is in place, sunpender is installed, the bottom basket is run through simultaneously in the bottom end of the sunpender
Its bottom end is fixed on by nut check, the top of the sunpender by nut check be fixed on overhanging adjust frame sliding platform or
Bent cap top surface.
Effect of the invention is that:
Mobile tensioning platform of the invention adjusts frame, cage and bottom basket including at least the overhanging being connected as one, hangs
Conditioning box erection is chosen to be placed in above box beam top plate and adjust frame bolt outwardly over protective fence, cage one end and overhanging and connect
It connects, the other end extends to bent cap vertically downward and is bolted with bottom basket, to form the outer profile phase of one with bridge end
It adapts to and can be along the overhung construction system of box beam top plate longitudinal sliding motion, and the overhung construction system can effectively transmit load
The clump weight being arranged on frame is adjusted to keep balancing to overhanging, and it is reliable that it can provide multi-layer stable simultaneously for construction personnel
Operating platform, and it is current convenient up and down between each operating platform, implement convenient for steel wire bundle of the construction personnel to special-shaped bent cap end
Two times tensioning；Mobile tensioning platform is assembled by above three frame body, and each frame body can be according to the wheel of special-shaped bent cap
Size is adjusted flexibly in wide feature, to meet the tensioning of special-shaped bent cap end, slip casting, the operation requirement of sealing off and covering anchorage, and is conducive to material
Recycle, reduce construction cost；Mobile tensioning platform adjusts the idler wheel of base of frame along box beam using overhanging is installed on
Longitudinal sliding motion, and the clump weight by being set to builder's jack end realizes that mobile tensioning platform is relatively solid on bridge
It is fixed, tensioning platform can be moved integrally without dismantling, installing repeatedly, improves construction efficiency；To sum up, movable type of the invention
Drawing platform structure is simple, reliable performance, is convenient to mount and dismount, is reusable, and can satisfy construction period abnormal shape bent cap diversity
Construction technology.
The application method of mobile tensioning platform of the invention, the overhanging that pre-production is completed adjust frame, cage, bottom
Basket assembles integral mobile tensioning platform on site, and mobile tensioning platform and the outer profile of bridge end are adapted,
Clump weight is placed to keep balancing in the sliding platform end that overhanging adjusts frame simultaneously, and construction personnel is to present position lid
The steel wire bundle of beam end carries out second of prestressed stretch-draw, later, mobile tensioning platform is driven longitudinally to run to along box beam
The next section of bent cap position that will carry out second of prestressed stretch-draw, and the is carried out to the steel wire bundle of position bent cap end
Secondary prestress tensioning, repeatedly, until completing second of prestressed stretch-draw to the steel wire bundle in bent cap, of the invention makes
With method, the two times tensioning to steel wire bundle in bent cap, construction are realized using the multilayer operation platform that mobile tensioning platform provides
Personnel's operation is more convenient, and mobile tensioning platform integrally can longitudinally be slided along box beam, and construction personnel can complete paragraph by paragraph
The two times tensioning of steel wire bundle in bent cap improves construction efficiency without dismantling repeatedly, installing tensioning platform.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of mobile one embodiment of tensioning platform of the present invention；
Fig. 2 is the side view in the direction A-A of Fig. 1；
Fig. 3 is the B-B cross-sectional view of Fig. 1；
Fig. 4 is the C-C cross-sectional view of Fig. 1；
Fig. 5 is the top view in the direction D-D of Fig. 1.
Figure label is as follows:
Bent cap 1；Box beam top plate 2；Protective fence 3；Steel wire bundle 4；
Overhanging adjusts frame 10；Stress platform 11；Sliding platform 12；Connection framework 14；Ladder access 1；Idler wheel 17；Counterweight
Block 18；
Bottom basket 21；Top operating platform 22；Bottom operating platform 23；Inclined ladder 25；Strengthening frame 24；Crossbeam 24a；Stringer 24b；
Ladder access 2 26；Cage 31；First vertical ladder 32；Second vertical ladder 33；Sunpender 40.
Specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.It should be noted that attached drawing is adopted
With very simplified form and using non-accurate ratio, only to facilitate, lucidly aid in illustrating the embodiment of the present invention
Purpose.For sake of convenience, "upper" described below, "lower" are consistent with the upper and lower direction of attached drawing, but this can't be this hair
The limitation of bright technical solution.
Illustrate mobile tensioning platform of the invention in conjunction with Fig. 1 to Fig. 5, it includes:
Overhanging adjusts frame 10 comprising be horizontally placed on the top of box beam top plate 2 of bridge and cross protective fence 3 by
Power platform 11 is set to 2 top of box beam top plate and bottom and is equipped with the sliding platform 12 of idler wheel 17, is vertically arranged to stress platform 11
The connection framework 14 and ladder access one 15 affixed between sliding platform 12 and with the two, one end of ladder access 1 and stress platform
11 connections, the other end of ladder access 1 are connect with sliding platform 12, and overhanging adjusts frame 10 can be longitudinal sliding along box beam top plate 2
It is dynamic；
Bottom basket 21, bottom basket 21 are set to the bottom of bent cap 1, and bottom basket 21 is equipped with top operating platform 22 and is set to top
The bottom operating platform 23 of 22 lower part of operating platform；
Cage 31, cage 31 is vertically arranged to 3 outside of protective fence and its both ends adjusts frame 10, bottom with overhanging respectively
The end bolt of basket 21 connects, stress platform 11, connection framework 14, bottom basket 21 and cage 31 be it is parallel by least two panels and
Spaced truss, the frame body that the cross bar and Crossing brace being connected between adjacent two panels truss are formed by connecting, is connected as one
Whole overhanging adjusts frame 10, bottom basket 21 and cage 31 and the outer profile of bridge end is adapted；
At least one clump weight 18 is held on the one of the separate cage 31 of the sliding platform 12 of overhanging adjusting frame 10
End.
The plane or space structure with triangular element that above-mentioned truss is made of straight-bar, are primarily subjected to axial tension
Or pressure.The overhanging of the present embodiment adjusts frame 10 having a size of 6.91 × 2.4 × 1.62m, 2 truss of main body load-carrying members by
8# channel steel is welded with 6.3# channel steel, using 6.3 # channel steels make cross bar, L50 angle steel makees bridging between adjacent two panels truss,
Guarantee that overhanging adjusts the stability of frame 10.
Mobile tensioning platform of the invention adjusts frame 10, cage 31 and bottom including at least the overhanging being connected as one
Basket 21, overhanging adjust frame 10 and are set to 2 top of box beam top plate and adjust outwardly over protective fence 3,31 one end of cage and overhanging
Section frame 10 is bolted, and the other end extends to bent cap 1 vertically downward and is bolted with bottom basket 21, to form one and bridge
The outer profile of beam end is adapted and can be along the overhung construction system of 2 longitudinal sliding motion of box beam top plate, and the overhung construction system
Load can be effectively transferred to overhanging and adjust the clump weight 18 being arranged on frame 10 to keep balancing, it can be simultaneously construction
Personnel provide the reliable operating platform of multi-layer stable, and current convenient up and down between each operating platform, convenient for construction personnel to abnormal shape
The steel wire bundle 4 of 1 end of bent cap implements two times tensioning；Mobile tensioning platform is assembled by above three frame body, each frame
Size can be adjusted flexibly according to the contour feature of special-shaped bent cap 1 in body, thus meet special-shaped 1 end tensioning of bent cap, slip casting,
The operation requirement of sealing off and covering anchorage, and be conducive to recycling for material, reduce construction cost；Mobile tensioning platform is outstanding using being installed on
The idler wheel 17 for adjusting 10 bottom of frame is chosen along box beam longitudinal sliding motion, and the clump weight 18 by being set to builder's jack end is real
Existing movable type tensioning platform is relatively fixed on bridge, can move integrally tensioning platform without dismantling, installing repeatedly, improve
Construction efficiency；To sum up, mobile tensioning platform structure of the invention is simple, reliable performance, is convenient to mount and dismount, is reusable,
And it can satisfy the multifarious construction technology of construction period abnormal shape bent cap 1.
The clump weight 18 of the present embodiment uses 2 block sizes for 1m × 0.5m × 0.48m concrete block, guarantees that overhanging is adjusted
10 rear end of frame guarantees 2 times of antidumping coefficients with the 12KN that weighs, to improve the overall stability of mobile tensioning platform.
Please continue to refer to Fig. 1 to Fig. 5, the top operating platform 22 and bottom operating platform 23 of bottom basket 21 are laid with plank or steel
Plate, the interior ladder access 2 26 for being equipped with connection top operating platform 22 and bottom operating platform 23 of bottom basket 21, the close bent cap 1 of bottom basket 21
Side be additionally provided with inclined ladder 25, facilitate construction personnel to carry out tensioning to the steel wire bundle 4 of 1 end of bent cap, be equipped with 4 at the top of bottom basket 21
A connector is bolted convenient for scene with cage 31.The bottom basket 21 of the present embodiment is having a size of 5.7 × 2.4 × 1.95m, main body
2 truss of load-carrying members are welded to connect using 8# channel steel, 6.3# channel steel, L50 angle steel, guarantee the stability of structure.
Be equipped with the first vertical ladder 32 of connection stress platform 11 and bottom basket 21 in above-mentioned cage 31, cage 31 it is close
One end of bent cap 1 is additionally provided with the second vertical ladder 33, and the setting of cage 31 is upper and lower between multilayer operation platform convenient for construction personnel
It is current, and ensure the construction safety of operator in the construction of 1 end steel wire bundle of bent cap, 4 two times tensioning.The cage of the present embodiment
31 having a size of 1.1 × 2.4 × 4.3m, and 2 truss of main body load-carrying members are welded by 8# channel steel and 6.3# channel steel, adjacent
Using 6.3# channel steel makees cross bar, L50 angle steel makees bridging between two panels truss, 4 connections are respectively arranged in 31 top of cage and bottom
Part facilitates scene to be bolted respectively with overhanging adjusting frame 10, bottom basket 21, and bolt uses 8.8 grades of M16 bolts, and first is vertical
Ladder 32, the second vertical ladder 33 are formed by 2 L50 angle steel and 20 reinforcement welding of φ.
Above-mentioned stress platform 11, ladder access, vertical ladder and 25 two sides of inclined ladder are equipped with guardrail, and hang wire netting, to protect
Demonstrate,prove the safety of construction personnel.
More preferably, as shown in Figure 1, it further includes at least two vertically arranged sunpenders 40, bottom is run through in the bottom end of sunpender 40
Basket 21 is simultaneously anchored in its bottom end, and the top of sunpender 40 is anchored in 1 top surface of sliding platform 12 or bent cap that overhanging adjusts frame 10, right
Between whole picture section lid beam 1, box beam the case where wet seam wide 300mm, 40 top of sunpender sequentially passes through wet seam between bent cap 1, box beam
It is anchored in the sliding platform 12 that overhanging adjusts frame 10；For framing section lid beam 1, and side steel box-girder other side small box girder
Situation, due to the influence of steel box-girder, 40 top of sunpender can not pass through small box girder, therefore 40 top of sunpender is directly anchored at bent cap 1
Top surface.It is using sunpender 40 that bottom basket 21 and 1 anchor of bent cap is tight, to reach limit purpose, prevent work progress indsole basket 21 from having
Big to shake, therefore, the setting of sunpender 40 can play the role of antidumping, guarantee the construction safety of mobile tensioning platform, and
And requirement to counterweight is reduced, the clump weight 18 that volume reduces is more convenient for construction personnel's transport and putting.The present embodiment is hung
Fining twisted steel of the bar 40 using diameter not less than 25mm is made.
With continued reference to FIG. 1, the bottom of bottom basket 21 is additionally provided with a strengthening frame 24, strengthening frame 24 by be arranged in a crisscross manner two
Root crossbeam 24a and two stringer 24b are welded, and cross through strengthening frame 24 and is fixed on by nut check in the bottom end of sunpender 40
The bottom end beam 24a, the setting of strengthening frame 24 can reinforce the structural strength of 21 end of bottom basket, avoid bottom basket 21 in the drawing of sunpender 40
Deform damage under power effect.
Illustrate the application method of mobile tensioning platform of the invention in conjunction with Fig. 1 to Fig. 5, the specific steps are as follows:
Overhanging adjusts frame 10, cage 31, bottom basket 21 after the completion of steel construction processing factory is made, transport to construction site,
Overhanging is adjusted into frame 10, cage 31, bottom basket 21 and is bolted and assembles integral mobile tensioning platform, and mobile
The outer profile for evening up platform and bridge end is adapted, mobile tensioning stage+module to bridge floor it is in place after, adjusted immediately in overhanging
Clump weight 18 is placed in 12 end of sliding platform of frame 10, and construction personnel by bridge floor enters mobile tensioning platform and to current
The steel wire bundle 4 of 1 end of position bent cap carries out second of prestressed stretch-draw, after prestressed stretch-draw, utilizes electronic calabash
Reed drives mobile tensioning platform longitudinally to run to next section of bent cap 1 for will carrying out second of prestressed stretch-draw along box beam
It sets, after mobile tensioning platform is in place, second of prestressed stretch-draw is carried out to the steel wire bundle 4 of 1 end of position bent cap, such as
This repeatedly, until in bent cap 1 steel wire bundle 4 complete second of prestressed stretch-draw.
The application method of mobile tensioning platform of the invention, the overhanging that pre-production is completed adjust frame 10, cage
31, bottom basket 21 assembles integral mobile tensioning platform, and the outer profile of mobile tensioning platform and bridge end on site
It is adapted, while in 12 end of the sliding platform placement clump weight 18 of overhanging adjusting frame 10 to keep balancing, construction personnel couple
The steel wire bundle 4 of 1 end of present position bent cap carries out second of prestressed stretch-draw, later, drives mobile tensioning platform
Next section of 1 position of bent cap that will carry out second of prestressed stretch-draw is longitudinally run to along box beam, and to 1 end of position bent cap
The steel wire bundle 4 in portion carries out second of prestressed stretch-draw, repeatedly, until completing second to the steel wire bundle 4 in bent cap 1
Prestressed stretch-draw, application method of the invention are realized using the multilayer operation platform that mobile tensioning platform provides to steel in bent cap 1
The two times tensioning of strand bundle 4, construction personnel's operation is more convenient, and mobile tensioning platform integrally can be longitudinally sliding along box beam
Row, construction personnel can complete the two times tensioning of steel wire bundle 4 in bent cap 1 paragraph by paragraph, without dismantling repeatedly, installing tensioning platform,
Improve construction efficiency.
Above-mentioned steps further include, and after mobile tensioning platform is in place, cooperates manually installed sunpender 40 using ladder truck, hang
The bottom end of bar 40 is through bottom basket 21 and is anchored in its bottom end, and the top of sunpender 40 is anchored in the sliding platform that overhanging adjusts frame 10
12 or 1 top surface of bent cap so that bottom basket 21 is anchored in bridge end securely reduce counterweight requirements, due to sunpender 40 and two
The nut at end is to be threadedly coupled, so that mobile tensioning platform dismounting is more convenient.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair
Any change, the modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to scope of the claims.
Claims (10)
1. a kind of movable type tensioning platform characterized by comprising
Overhanging adjusts frame comprising it is horizontally placed on above the box beam top plate of bridge and crosses the stress platform of protective fence,
It is set to box beam top plate top and bottom and is equipped with the sliding platform of idler wheel, be vertically arranged to the stress platform and the cunning
Affixed connection framework and ladder access one between moving platform and with the two, one end of the ladder access one are connect with the stress platform,
The other end of the ladder access one is connect with the sliding platform, and the overhanging adjusts frame can be longitudinally sliding along the box beam top plate
It is dynamic；
Bottom basket, the bottom basket are set to the bottom of the bent cap, and the bottom basket is equipped with top operating platform and is set to described
The bottom operating platform of top operating platform lower part；
Cage, the cage is vertically arranged on the outside of the protective fence and its both ends adjusts frame, institute with the overhanging respectively
The end bolt connection of bottom basket is stated, the stress platform, connection framework, bottom basket are parallel by least two panels with cage and are spaced
The truss of setting, the frame body that the cross bar and Crossing brace being connected between truss described in adjacent two panels are formed by connecting, is connected as one
The whole overhanging adjusts frame, bottom basket and cage and the outer profile of bridge end is adapted；
At least one clump weight is held on one end far from the cage that the overhanging adjusts the sliding platform of frame.
2. movable type tensioning platform according to claim 1, it is characterised in that: the clump weight uses concrete block.
3. movable type tensioning platform according to claim 1, it is characterised in that: the top operating platform of the bottom basket and bottom
Portion's operating platform is laid with plank or steel plate, and the side of the close bent cap of the bottom basket is additionally provided with inclined ladder.
4. movable type tensioning platform according to claim 1, it is characterised in that: be equipped in the cage and be connected to the stress
First vertical ladder of platform and the bottom basket, one end of the close bent cap of the cage are additionally provided with the second vertical ladder.
5. movable type tensioning platform according to claim 1, it is characterised in that: the stress platform, ladder access, vertical ladder
And inclined ladder two sides are equipped with guardrail, and hang wire netting.
6. movable type tensioning platform according to claim 1, it is characterised in that: the stress platform, connection framework, bottom basket
It is welded at least two panels truss of cage by channel steel, the cross bar between truss described in adjacent two panels is made of channel steel, scissors
Support is made of angle steel.
7. movable type tensioning platform according to claim 1, it is characterised in that: it further includes at least two vertically arranged
Its bottom end through the bottom basket and is fixed on by nut check in the bottom end of sunpender, the sunpender, and the top of the sunpender is by nut
It is locked and adjusts sliding platform or the bent cap top surface of frame in overhanging.
8. movable type tensioning platform according to claim 1, it is characterised in that: the bottom of the bottom basket is additionally provided with a reinforcing
Frame, the strengthening frame are welded by two crossbeams being arranged in a crisscross manner and two stringers, and institute is run through in the bottom end of the sunpender
It states strengthening frame and crossbeam bottom end is fixed on by nut check.
9. a kind of application method of movable type tensioning platform, which is characterized in that steps are as follows:
Overhanging adjusting frame, cage, bottom basket that pre-production is completed are bolted and are assembled into as claim 1 to 8 is any
The outer profile of mobile tensioning platform described in, the movable type tensioning platform and bridge end is adapted, the movable type
Tensioning stage+module to bridge floor it is in place after, overhanging adjust frame sliding platform end place clump weight, construction personnel enter
The movable type tensioning platform simultaneously carries out second of prestressed stretch-draw to the steel wire bundle of present position bent cap end, answers in advance
After power tensioning, second of prestressing force will be carried out by driving the mobile tensioning platform longitudinally to run to next section along box beam
The bent cap position of tensioning after the movable type tensioning platform is in place, carries out second to the steel wire bundle of position bent cap end
Secondary prestressed stretch-draw, repeatedly, until completing second of prestressed stretch-draw to the steel wire bundle in entire bent cap.
10. application method according to claim 9, it is characterised in that: after the movable type tensioning platform is in place, installation is hung
Its bottom end through the bottom basket and is fixed on by nut check in the bottom end of bar, the sunpender, and the top of the sunpender is by nut lock
It is tightly fixed on sliding platform or bent cap top surface that overhanging adjusts frame.
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| CN201910195935.2A CN110067201A (en) | 2019-03-15 | 2019-03-15 | A kind of movable type tensioning platform and its application method |
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| CN201910195935.2A CN110067201A (en) | 2019-03-15 | 2019-03-15 | A kind of movable type tensioning platform and its application method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111827124A (en) * | 2020-07-29 | 2020-10-27 | 中铁二局集团有限公司 | T-beam transverse prestress tensioning auxiliary device, mounting method and using method |
| CN111877727A (en) * | 2020-07-14 | 2020-11-03 | 中国一冶集团有限公司 | Construction movable operation platform and operation method |
| CN112030749A (en) * | 2020-07-15 | 2020-12-04 | 中交第一航务工程局有限公司 | Construction method of walking type bent cap operation platform |
| CN114108483A (en) * | 2021-12-09 | 2022-03-01 | 中国葛洲坝集团国际工程有限公司 | Movable hanging operation platform for welding steel box girder bridge guardrail |
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| CN114108483A (en) * | 2021-12-09 | 2022-03-01 | 中国葛洲坝集团国际工程有限公司 | Movable hanging operation platform for welding steel box girder bridge guardrail |
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