CN101126223A - Mobile integral construction platform, construction method thereof and special sling for the same - Google Patents
Mobile integral construction platform, construction method thereof and special sling for the same Download PDFInfo
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- CN101126223A CN101126223A CNA2007100500286A CN200710050028A CN101126223A CN 101126223 A CN101126223 A CN 101126223A CN A2007100500286 A CNA2007100500286 A CN A2007100500286A CN 200710050028 A CN200710050028 A CN 200710050028A CN 101126223 A CN101126223 A CN 101126223A
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- 238000010276 construction Methods 0.000 title abstract description 45
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 238000009432 framing Methods 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- 239000003351 stiffener Substances 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Abstract
The invention relates to a mobile type integrated construction platform, and a method for using the mobile type integrated construction platform in a wet tie-in which is spanned with a box beam to construct and an outer side template dedicated hanger used in the method of carrying out the wet tie-in construction. The mobile type integrated construction platform comprises a running frame and a running hanging rack which is fixedly connected with the lower part of the running frame; the upper end face of the main frame of the running hanging rack is fixedly connected with the beam of the running frame; the lower end face of the main frame is fixedly connected with the hanging rack; the front part and the rear part of the hanging rack are respectively provided with a hanging rack platform; the two ends of the hanging rack platform are respectively hinged with a side abutment platform. A sturdy and firm temporary construction platform can be formed by the hanging rack platforms and the side abutment platforms by adopting the mobile type integrated construction platform and the method of applying the mobile type integrated construction platform in the wet tie-in which is spanned with a box beam to construct. The side abutment platforms are dropped after the construction; then the mobile type integrated construction platform can be longitudinally moved to a next working face without repeatedly building and dismounting the construction platform, thus greatly reducing the work load of the construction and providing reliable guarantee to the construction safety.
Description
Technical field
The present invention relates to the mobile integral operation platform that the construction of bridge system conversion wet joint is used, the method for the wet joint that sets up the case beam being constructed with this platform, used outboard template special hanger in this job practices.
Background technology
In the present domestic bridge construction, adopt first simple supported box beam to be transformed into again in the continuous box girder process,, between adjacent two beam piers, adopt the wet joint job practices in order to regulate the joint error, to reduce the assembly unit difficulty.Usually earlier set up simple and easy scaffold operation platform at Dun Ding, set a roof beam in place and set up the lower platform passage again after finishing, operation platform is reinforced operation, the wet joint template is installed then, show and pour into a mould the wet joint concrete again, then to the health of wet joint concrete demoulding.
Adopt traditional wet joint job practices, outer side form of platform and steel-wood structure and interior side form template scaffold erecting, difficulty of construction is very big, the turnover of template and platform material, transportation, and the recovery that the beam body sets up the temporary support that adopts all will be carried out on bridge floor, directly restrict the duration of wet joint construction and the operation of on the beam of top, transporting the roof beam structure beam, promoted difficulty of construction significantly, prolonged the duration.Because operation platform need be built repeatedly, remove, and causes the time effective rate of utilization not high.And it is big that the workman builds, removes operation platform labour intensity, belongs to work high above the ground mostly, dangerous high.Carry out the assembling operation of operation platform under the adverse circumstances of marine strong wind, lifting spelling rod member potential safety hazard is very big on bridge floor.It is more to install and remove used device quantity, needs to cooperate with crane barge or other equipment.Operation on the sea needs boats and ships to cooperate, and tidal-flat area district water level is with flood tide, ebb tide changes, and the construction boats and ships enter this zone and are subjected to water level limitation bigger, and build its cost of rack construction wet joint in the beach district extremely expensive.
Summary of the invention
The objective of the invention is to: at the problem of existing conventional wet joint construction method existence, provide and to build, remove operation platform in a kind of construction repeatedly, the materials in construction waste is few, can greatly reduce construction working amount accelerating construction progress, reduce the installation and maintenance expense, guarantee a kind of mobile integral operation platform of construction safety.
A further object of the present invention is: provide and use this mobile integral operation platform, the method that the wet joint that has set up the case beam in the bridge construction is constructed.
The 3rd purpose of the present invention is: be provided at and implement used a kind of outboard template special hanger in this wet joint job practices.
Mobile integral operation platform of the present invention is realized by implementing following technical proposals:
A kind of mobile integral operation platform is characterized in that: it is made up of the traveling vehicle frame at top and the traveling hanger that is fixed in below this traveling vehicle frame; Wherein the traveling vehicle frame comprise two horizontal girders, be connected in two between the horizontal girder horizontal gird and be provided with slide device in two horizontal girders bottom; Wherein the traveling hanger includes the main framing of setting, and be loaded on the horizontal hanger of main framing bottom, the hanger platform that this hanger is arranged by a pair of horizontal parallel, with link respectively at these hanger platform two ends cross the pier platform, and the protective guard that is provided with in the both sides of this hanger platform, the both sides of crossing the pier platform and end formed.
Described slide device comprises travelling wheel that is arranged on below two horizontal girders of traveling vehicle frame and the walking rails that cooperates with travelling wheel; Rail distance rod is set between the walking rails; Locking member is set on the slide device.
Two horizontal girders of described formation traveling vehicle frame are 16# double flute steel, and horizontal gird is a 14# double flute steel, and walking rails is the 10# channel bar.
Main framing in the described traveling hanger is a truss Steel Structure, the chord member of truss top of truss Steel Structure and the welding of the crossbeam of traveling vehicle frame, and the bottom of chord member of truss and horizontal hanger are connected, and brace one end is connected with chord member of truss, and an end is connected with hanger.
Described pier platform, the hanger platform crossed is made up of 2 i iron and many steel pipes being connected between the i iron respectively, and the chord member of truss of main framing adopts two angles 75 * 5, brace employing 50 * 5 angle steel.
Wet joint job practices of the present invention adopts following steps:
(1) the mobile integral operation platform is risen to the wet joint bridge floor that sets up the case beam, the walking rails of its traveling vehicle frame slide device, along being separately fixed on the bridge floor of wet joint center line both sides along the bridge floor direction, the traveling hanger below the traveling vehicle frame is under the bridge floor;
(2) by dolly or hoist engine push-and-pull traction, drive the traveling vehicle frame and on bridge floor, laterally slide, after the traveling hanger that is connected in traveling vehicle frame bottom moves to the operating position thereupon, four travelling wheels are locked with skate on walking rails.
(3) the outboard template lifting is transplanted on the outside bridge floor that sets up the case beam, installs and fixes outboard template;
What (4) level was opened the hinge joint of four jiaos on hanger platform crosses the pier platform, will cross pier platform and outboard template and be connected, hanger platform and cross the pier platform form a solid interim operation platform firmly around bridge pier;
(5) inner side template that will leave on the hanger platform rises on the top board that sets up the case beam of wet joint center line both sides, installs and fixes inner side template.
(6) fluid concrete in interior outboard template behind the casting complete, is removed inner side template, and inner side template leaves on the hanger, unclamps being connected of pier platform and outboard template, removes outboard template.
A kind of outboard template special hanger used in the wet joint job practices of the present invention is realized by implementing following technical proposals:
Described special hanger comprises two girders, and is connected the supporting traverse between the girder, and the suspension centre in the girder front portion has the reinforcement stull, and the girder rear portion is provided with stiffener, and stull is provided with suspension centre and wears pin and hoist cable.
The job practices that adopts above mobile integral operation platform and be applied to set up the wet joint of case beam makes the hanger platform and crosses the pier platform to form a solid firm interim operation platform around bridge pier.Finish construction operation by interim operation platform,,, accelerated manufacturing schedule, shortened the construction period because operation platform under bridge floor, is realized and the parallel operations of top fortune frame work as installation and the dismounting and the turnover transportation of template, temporary support.Put down the pier platform after construction finishes, and got final product whole vertical shift to next work plane, workload is minimum, even box beam erection is carried out in operation at sea, also need not to use the boats and ships coordinating operation.So move in circles, can finish the wet joint construction working of monolithic case beam fast, and need not to build repeatedly, remove operation platform, the spillage of material amount is few, installs, maintenance cost is low, greatly reduces cost; And the inner side template that needs in the wet joint construction can also leave on the hanger platform, also reduced the workload of construction, adopt this job practices, the spelling lifting operation that monolithic moves operation platform all carries out on the ground, greatly reduce the workload and the marine workload of carrying out lifting operation of construction at sea, working security had reliable safeguard measure, overcome traditional scaffolding platform job practices and must under marine strong wind adverse circumstances, carry out the high-altitude assembling operation of operation platform, the very big potential safety hazard that lifting spelling rod member exists on bridge floor has been guaranteed construction safety.
Adopt and be somebody's turn to do outer side form special hanger, guarantee steadily to lift by crane, make template when mounted, keep level, reduce difficulty of construction in the lifting process.
Description of drawings
Fig. 1 is the traveling vehicle frame plan structure schematic diagram of mobile integral operation platform of the present invention
Fig. 2 is that the present invention crosses the traveling hanger plan structure schematic diagram that the pier platform is in down state
Fig. 3 is that the present invention crosses the traveling hanger plan structure schematic diagram that the pier platform is in horizontal open configuration
Fig. 4 is that the present invention crosses the mobile integral operation platform structural representation that the pier platform is in down state
Fig. 5 is the user mode vertical view of the present invention's traveling hanger in setting up the construction of case beam wet joint.
Fig. 6 to Fig. 8 is the schematic diagram of mobile integral operation platform of the present invention to the construction of case beam wet joint.
Fig. 9 is that outboard template special hanger of the present invention is faced structural representation.
Figure 10 is an outboard template special hanger plan structure schematic diagram of the present invention.
Figure 11 is an outboard template special hanger user mode schematic diagram of the present invention.
The specific embodiment
The traveling vehicle frame 1 of the mobile integral operation platform shown in Fig. 1 comprises two horizontal girders 2 and is connected in two horizontal girds 3 between the horizontal girder, the walking rails 10 that travelling wheel 9 is set below two horizontal girders and cooperates with travelling wheel 9; Rail distance rod 11 is set between the walking rails; Locking member is set on the travelling wheel.Described longeron is a 16# double flute steel, and crossbeam is a 14# double flute steel, and walking rails is the 10# channel bar.
Shown in Fig. 2,3: the traveling hanger 4 of mobile integral operation platform comprises the main framing 5 of setting, and is loaded on the horizontal hanger 6 of main framing bottom; This hanger (6) by the hanger platform of arranging with the orthogonal thereto a pair of horizontal parallel of traveling longitudinal beam (3) (7), with link respectively at these hanger platform (7) two ends cross pier platform (8), and the protective guard that is provided with in the both sides of this hanger platform, the both sides of crossing the pier platform and end formed, cross pier platform, hanger platform, form by 2 i iron and many steel pipes being connected between the i iron respectively.
Mobile integral operation platform shown in Fig. 4, comprise traveling vehicle frame 1 and the traveling hanger 4 that is loaded on traveling vehicle frame bottom, the main framing of traveling hanger adopts truss Steel Structure, the chord member of truss 24 of main framing adopts two angles 75 * 5, brace 12 adopts 50 * 5 angle steel, and the crossbeam 3 of chord member of truss top and traveling vehicle frame is connected; The chord member of truss lower end horizontal hanger 6 that is connected; The front and rear of described horizontal hanger 6 respectively has a hanger platform 7, and hanger platform 7 two ends linked pier platform 8 respectively.
Fig. 5 shows in the wet joint construction of setting up the case beam, and the user mode vertical view of mobile integral operation platform does not comprise traveling vehicle frame 1 among the figure.Pier platform 8 levels of crossing of hanger platform 7 right-hand members hinge joint are opened and are fixed on the bridge floor that has set up the case beam on the bridge pier pier shaft 15, and the pier platform of crossing that this hanger platform left end is hinged is in the state that puts down.Hanger platform 7 right-hand members are laid plank 13 with crossing on the pier platform 8, form a solid firm interim operation platform around bridge pier pier shaft 15; Outboard template 17 is fixed on the case beam outside; Inner side template 16 is fixed on case beam wet joint center line both sides.
Fig. 6 shows in the wet joint construction of setting up the case beam, the user mode schematic diagram of mobile integral operation platform, the traveling vehicle frame 1 on mobile integral operation platform top, be arranged on the state that sets up case beam 14, and be fixed on the outboard template 17 that sets up on case beam 14 outside bridge floors, make hanger platform 7 and cross pier platform 8 around bridge pier pier shaft 15, to form a solid firm interim operation platform.
Fig. 7 shows in the construction of setting up case beam wet joint, the user mode schematic diagram of mobile integral operation platform, on the bridge floor of the traveling vehicle frame wet joint 25 center line both sides on mobile integral operation platform top, the hanger platform 7 of traveling vehicle frame 1 bottom traveling hanger 4, the pier platform 8 of crossing of its four jiaos hinge joints is in down state.
Fig. 8 shows in the wet joint construction of setting up the case beam, the user mode schematic diagram of mobile integral operation platform, the traveling vehicle frame 1 on mobile integral operation platform top, be arranged on the bridge floor of the wet joint 25 center line both sides of setting up case beam 14, the hanger platform 7 of traveling vehicle frame 1 bottom traveling hanger 4, the pier platform 8 excessively of its four jiaos hinge joints is in level and opens 1, be arranged on the bridge floor of the wet joint center line both sides of setting up case beam 14, the hanger platform 7 of traveling vehicle frame 1 bottom traveling hanger 4, the pier platform 8 of crossing of its four jiaos hinge joints is in horizontal open configuration, and be fixed on the outboard template 17 that sets up on case beam 14 outside bridge floors, make hanger platform 7 and cross pier platform 8 around bridge pier pier shaft 15, to form a solid firm interim operation platform.Hanger platform 7 and cross on the pier platform 8 and lay plank, one of them inner side template 16 are thus lifted to the case back plate on wet joint 25 center line right sides and fixing, and another inner side template 16 is placed on the horizontal hanger 6 in the traveling hanger 4.
Use Fig. 1-mobile integral operation platform shown in Figure 4, to setting up the wet joint construction of case beam, step is as follows: the mobile integral operation platform is risen to the wet joint bridge floor that sets up case beam 14; The walking rails 10 of the slide device of its traveling vehicle frame 1 is along being separately fixed on the bridge floor of wet joint center line both sides along the bridge floor direction; Traveling hanger 4 below the traveling vehicle frame 1 is under the bridge floor, by dolly or hoist engine push-and-pull traction, the traveling vehicle frame 1 that drives mobile integral operation platform top laterally slides on bridge floor, after the traveling hanger 4 that is connected in traveling vehicle frame 1 bottom moves to the operating position thereupon, four travelling wheels 9 are locked with skate on walking rails 10.Outboard template 17 liftings are transplanted on the outside bridge floor that sets up case beam 14, install and fix outboard template; What level was opened the hinge joint of 7 four jiaos on hanger platform crosses pier platform 8, will cross the pier platform with outboard template 17 is connected, hanger platform 7 and cross pier platform 8 form a solid interim operation platform firmly around bridge pier; Set up case beam 14 top boards with what leave that inner side template 16 on the hanger platform 7 rises to wet joint center line both sides in, install and fix inner side template; Fluid concrete in interior outboard template 16,17 is removed inner side template 16 behind the casting complete, inner side template is left on the horizontal hanger 6, unclamps being connected of pier platform 8 and outboard template 17, removes outboard template 17.
Fig. 9-Figure 11 shows that outboard template special hanger, comprise two girders 18, and be connected the supporting traverse 19 between the girder that the suspension centre in the girder front portion has the stull 20 of reinforcement, also comprise the stiffener 21 that is arranged in the girder rear portion, stull is provided with suspension centre and wears pin 22 and hoist cable 23.
In the step of the job practices of the wet joint that sets up the case beam, during lifting wet joint outboard template 17, outboard template is fastened on the stiffener of special hanger, hang cooperation with vapour, play sling, template is winched to the outside, the external edge of beam installed position, it is in place to adopt vertical pull bar and girt accurately to transfer, outboard template keeps level when having guaranteed lifting, reduces difficulty of construction.
Claims (7)
1. mobile integral operation platform is characterized in that: it is made up of the traveling vehicle frame (1) at top and the traveling hanger (4) that is fixed in below this traveling vehicle frame; Wherein the traveling vehicle frame comprise two horizontal girders (2), be connected in two between the horizontal girder horizontal gird (3) and be provided with slide device in two horizontal girders bottom; Wherein traveling hanger (4) includes the main framing (5) of setting, and be loaded on the horizontal hanger (6) of main framing bottom, the hanger platform (7) that this hanger (6) is arranged by a pair of horizontal parallel, with link respectively at these hanger platform (7) two ends cross pier platform (8), and the protective guard that is provided with in the both sides of this hanger platform, the both sides of crossing the pier platform and end formed.
2. according to the described mobile integral operation platform of claim 1, it is characterized in that: described slide device comprises travelling wheel (9) that is arranged on below two horizontal girders of traveling vehicle frame and the walking rails (10) that cooperates with travelling wheel (9); Rail distance rod (11) is set between the walking rails; Locking member is set on the slide device.
3. according to the described mobile integral operation platform of claim 2, it is characterized in that: two horizontal girders (2) of described formation traveling vehicle frame are 16# double flute steel, and horizontal gird (3) is a 14# double flute steel, and walking rails (10) is the 24kg light rail.
4. according to claim 1 or 2 or 3 described mobile integral operation platforms, it is characterized in that: the main framing (5) in the described traveling hanger (4) is truss Steel Structure, crossbeam (3) welding of the chord member of truss of truss Steel Structure (24) top and traveling vehicle frame, the bottom of chord member of truss and horizontal hanger (6) are connected, brace (12) one ends are connected with chord member of truss, and an end is connected with hanger.
5. according to the described mobile integral operation platform of claim 4, it is characterized in that: cross pier platform (8), hanger platform (7) and form by 2 i iron and many steel pipes being connected between the i iron respectively, the chord member of truss of main framing (11) adopts two angles 75 * 5, and brace (12) adopts 50 * 5 angle steel.
6. use claim 1,2,3, one of 5 mobile integral operation platform, the wet joint that sets up the case beam is constructed, step is as follows:
(1) the mobile integral operation platform is risen to the wet joint bridge floor that sets up case beam (14), the walking rails (10) of its traveling vehicle frame (1) slide device, along being separately fixed on the bridge floor of wet joint center line both sides along the bridge floor direction, the following traveling hanger (4) of traveling vehicle frame (1) is under the bridge floor;
(2) by dolly or hoist engine push-and-pull traction, drive traveling vehicle frame (1) longitudinal sliding motion on bridge floor, after the traveling hanger (4) that is connected in traveling vehicle frame (1) bottom moves to the operating position thereupon, four travelling wheels (9) are gone up at walking rails (10) be locked with skate.
(3) outboard template (17) lifting is transplanted on the outside bridge floor that sets up case beam (14), installs and fixes outboard template;
What (4) level was opened the hinge joint of (7) four jiaos on hanger platform crosses pier platform (8), will cross pier platform and outboard template (17) and be connected, hanger platform and cross the pier platform form a solid interim operation platform firmly around bridge pier;
(5) inner side template (16) that will leave on the hanger platform (7) rises on the top board that sets up case beam (14) of wet joint center line both sides, installs and fixes inner side template.
(6) at the interior fluid concrete of interior outboard template (16,17), behind the casting complete, remove inner side template (16), inner side template leaves on the hanger (6), unclamps being connected of pier platform (8) and outboard template (17), removes outboard template (17).
7. execute the real power profit and require the used outboard template special hanger of 6 described wet joint job practicess for one kind, it is characterized in that: described suspender comprises two girders (18), and be connected supporting traverse (19) between the girder, suspension centre in the girder front portion has reinforcement stull (20), the girder rear portion is provided with stiffener (21), and stull is provided with suspension centre and wears pin (22) and hoist cable (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100500286A CN100476076C (en) | 2007-09-17 | 2007-09-17 | Mobile integral construction platform, construction method thereof and special sling for the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100500286A CN100476076C (en) | 2007-09-17 | 2007-09-17 | Mobile integral construction platform, construction method thereof and special sling for the same |
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| Publication Number | Publication Date |
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| CN101126223A true CN101126223A (en) | 2008-02-20 |
| CN100476076C CN100476076C (en) | 2009-04-08 |
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| CN101476288B (en) * | 2008-12-08 | 2010-12-29 | 中铁十五局集团有限公司 | Cast-in-place moving die carrier of T type bridge flange board |
| CN102071646A (en) * | 2010-12-31 | 2011-05-25 | 中铁大桥局集团第四工程有限公司 | Large-tonnage box girder sea system and construction method |
| CN102182150A (en) * | 2011-04-20 | 2011-09-14 | 中国十七冶集团有限公司 | Installation method of externally hung steel template for anti-collision guardrail construction outside viaduct |
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| CN102071646A (en) * | 2010-12-31 | 2011-05-25 | 中铁大桥局集团第四工程有限公司 | Large-tonnage box girder sea system and construction method |
| CN102720131A (en) * | 2011-03-31 | 2012-10-10 | 江苏恩纳斯重工机械有限公司 | Rear propulsion cradle |
| CN102720131B (en) * | 2011-03-31 | 2014-06-04 | 江苏恩纳斯重工机械有限公司 | Rear propulsion cradle |
| CN102182150A (en) * | 2011-04-20 | 2011-09-14 | 中国十七冶集团有限公司 | Installation method of externally hung steel template for anti-collision guardrail construction outside viaduct |
| CN102267176A (en) * | 2011-07-12 | 2011-12-07 | 梁铭康 | Bridge beam construction device |
| CN102294748A (en) * | 2011-07-12 | 2011-12-28 | 梁铭康 | Bridge body construction equipment |
| CN102409614A (en) * | 2011-09-02 | 2012-04-11 | 中铁上海工程局第一工程有限公司 | Segmental supporting cross girders for segmental girder assembly bridge fabrication machine |
| CN102409614B (en) * | 2011-09-02 | 2013-08-07 | 中铁上海工程局有限公司 | Segmental supporting cross girders for segmental girder assembly bridge fabrication machine |
| CN103266568A (en) * | 2013-04-28 | 2013-08-28 | 中国五冶集团有限公司 | Moving platform capable of constructing without colliding walls |
| CN103266568B (en) * | 2013-04-28 | 2015-08-19 | 中国五冶集团有限公司 | A kind of movable platform of anti-collision wall construction |
| CN103556574A (en) * | 2013-11-05 | 2014-02-05 | 中铁二十一局集团路桥工程有限公司 | Lifting device special for rapidly lifting steel truss girder rod piece and using method |
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| CN103774564A (en) * | 2013-12-30 | 2014-05-07 | 江苏省交通工程集团有限公司 | Movable bridge support replacing device |
| CN103774564B (en) * | 2013-12-30 | 2016-01-13 | 江苏省交通工程集团有限公司 | Movable type bridge bearing replacement device |
| CN104404883A (en) * | 2014-11-19 | 2015-03-11 | 中交四航局第三工程有限公司 | Inner working platform for rapid construction of bridge pier and construction method using inner working platform |
| CN105178596A (en) * | 2015-10-10 | 2015-12-23 | 安徽卓良新材料有限公司 | Cast-in-place box girder formwork diagonal bracing device |
| CN106120570A (en) * | 2016-08-29 | 2016-11-16 | 中交第二航务工程局有限公司 | A kind of job platform for the construction of cap secondary |
| CN106120570B (en) * | 2016-08-29 | 2018-07-24 | 中交第二航务工程局有限公司 | A kind of job platform for the secondary construction of cap |
| CN108004930A (en) * | 2017-12-07 | 2018-05-08 | 四川建筑职业技术学院 | The construction method of vertical shift bowstring arch bridge |
| CN108589552A (en) * | 2018-06-11 | 2018-09-28 | 交通运输部科学研究院 | A kind of collapsible suspension apparatus |
| CN108589552B (en) * | 2018-06-11 | 2023-07-21 | 交通运输部科学研究院 | Folding suspension device |
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|---|---|
| CN100476076C (en) | 2009-04-08 |
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