CN106567339A - Pi-shaped superposed beam reverse jacking system - Google Patents
Pi-shaped superposed beam reverse jacking system Download PDFInfo
- Publication number
- CN106567339A CN106567339A CN201610981892.7A CN201610981892A CN106567339A CN 106567339 A CN106567339 A CN 106567339A CN 201610981892 A CN201610981892 A CN 201610981892A CN 106567339 A CN106567339 A CN 106567339A
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- Prior art keywords
- jack
- reverse jacking
- walking
- reverse
- bridge
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Classifications
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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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a pi-shaped superposed beam reverse jacking system. The pi-shaped superposed beam reverse jacking system comprises a travelling system, a main frame body system and a force transmission system. The travelling system comprises a travelling rail, a travelling trolley and a driving device, wherein the travelling rail is installed at the beam bottom of a superposed beam, and the travelling trolley is arranged below the travelling rail and moves on the travelling rail. The main frame body system comprises a reverse jacking frame, supporting rods and an operating platform. The reverse jacking frame comprises reverse jacking frame stand columns and reverse jacking frame parallel connection portions, wherein the reverse jacking frame parallel connection portions are connected with the reverse jacking frame stand columns. The supporting rods are arranged above the reverse jacking frame, and the operating platform is arranged above the supporting rods. The force transmission system comprises stay cable finished products, connecting anchorage plates, connecting bolts, a hydraulic oil pump and a jack, wherein the jack can be connected between the upper end of the reverse jacking frame and the beam bottom of the superposed beam. According to the pi-shaped superposed beam reverse jacking system, during superposed beam construction and bridge forming, the reverse jacking frame is installed at the bottom of a transverse beam, reverse jacking force with a certain magnitude is applied, the deformation of a current section can be properly eliminated, and therefore the current section can be accurately matched with a hoisted bridge section. Before pouring of longitudinal and transverse wet joints of sections, two transverse beam sections at the cantilever ends are jacked in the reverse direction to achieve storage of the stress of a bridge slab in the bridge transverse direction in the bridge forming period, and the bridge slab is effectively prevented from cracking.
Description
Technical field
The present invention relates to π type composite beam construction equipments, particularly a kind of π types composite beam is counter to push up system.
Background technology
According to the construction featuress of π types composite beam itself beam lattice system, both sides main longitudinal grider rigidity is big, middle connection crossbeam is firm
Spend less, stringer only to play a part of to strengthen crossbeam lateral stability.In beam lattice System forming and composite beam System forming mistake
Cheng Zhong, vertically and horizontally stress change is complicated for floorings.Feature is presented below as totally：
In the composite beam cantilever stage, when lifting of the Anterior Segment in anchor case position tension cable upwards is acted on, hung by bridge floor on crossbeam
The downward counter-force effect of machine front fulcrum, sections both sides main longitudinal grider are produced under the corner upwards of deflection bridge axis direction, intermediate transverse girder
The deformation tendency scratched；Sections is lifted by crane as both sides main longitudinal grider weight is larger, intermediate transverse girder rigidity is less, in the lifting of crane hanger
Under effect, sections both sides main longitudinal grider produces downward corner, the deformation tendency of intermediate transverse girder arch for deviating from bridge axis direction.Currently
Opposite direction deformation deviation between sections and lifting sections, brings certain difficulty to section assembling.
In the wet seam construction stage, as cantilever construction constantly extends, the horizontal component of suspension cable gradually increases, and causes
Floorings are cracking under the excessive axle power in local and moment of flexure collective effect.Into the bridge stage, in vehicle operation, compared with cart
（Wheel）Load speeds away, crossbeam recovers deformation, easily produces direction across bridge tension in bridge floor plate top surface, causes floorings
Cracking.
Problem on deformation of the cable-stayed bridge π type composite beams during cantilever, the floorings problem of Cracking into the bridge stage are always
The problem that design and construction party are constantly explored.
At present country's Donghai Bridge, Nanpu Bridge, Yangpu Bridge, Ningbo river in Zhejiang Province river grand bridge, Wenzhou Yongjia Ou Bei great Qiao with
And this engineering etc. successfully realizes anti-top construction, and implementation result reaches design and expected requires.In the structure shape of anti-top system
Formula, is formed using Bailey truss spelling more than general walking dolly, and row regularity oftimekeeping is poor, safety is low.On power transmission rope is selected
Multiply steel strand wires are adopted typically, as anti-top power is continued to increase, steel strand wires deformation is big, it is poor that the static load stage holds lotus stability, unfavorable
Realize in anti-top effect.
The content of the invention
It is an object of the invention to provide a kind of π types composite beam is counter to push up system, mainly solve existing for above-mentioned prior art
Problem, the present invention constructs and into the bridge stage in composite beam, installs anti-upper frame at crossbeam bottom and apply a certain size anti-top power,
Can suitably eliminate and deform when Anterior Segment so as to lifting beam section accurately mate；Before in sections, vertically and horizontally wet seam is poured, anti-top-hung
Two, arm end sections crossbeam, to meet into bridge stage floorings direction across bridge stress deposit, is prevented effectively from floorings cracking.
For achieving the above object, the technical scheme is that:
A kind of π types composite beam is counter to push up system, it is characterised in that：It includes running gear, main frame body system, three big portion of actuating system
Point；Wherein：The running gear include walk track, walking dolly, driving means, the walking track installation at composite beam beam bottom,
The walking dolly connection driving means are arranged on below walking track and can walk in walking track；The main frame body system bag
Anti- upper frame, support bar, operating platform are included, the anti-upper frame, should by anti-upper frame column and the anti-upper frame lateral of the anti-upper frame column of connection
Support bar is arranged on above anti-upper frame, and the operating platform is arranged on above support bar；Actuating system includes finished guy cable, engaging lug
Plate, connecting bolt, hydraulic oil pump and jack, the jack are attached between anti-upper frame upper end and composite beam beam bottom；
When anti-top system is in unloading, walking states, first actuating system is unloaded, that is, hydraulic oil pump is driven from very heavy fight back
Oily, very heavy synthlipsis cylinder to oil pressure is 0 state, then removes the connecting bolt between the otic placode and beam body of beam bottom connection, now leads
Support body system and actuating system start driving means and entirely instead push up walking by system by being suspended on walking track；
When anti-top system is in loading, static load state, actuating system is installed first, by the connection between connection otic placode and beam body
Bolt is installed in place, and now main frame body system, actuating system form triangle stress system, departs from running gear, then drives
Hydraulic oil pump classification is slowly sent oil, jack to stretch cylinder to jack to reach design load to oil pressure, complete loading procedure；When monitoring knot
After really qualified, the self-locking steel loop on jack cylinder body screwed, stress system is hydraulically operated and is converted to rigid support, at structure
In static load state.
The characteristics of present invention has following and function：
1. anti-top system of the invention has abandoned beret truss assembled walking dolly, will be main frame body system, actuating system and inspection little
Vehicle integrated design, system walking track are shared with inspection trolley track, and whole anti-top security of system is high, easy to operate, structure
Make simple, be worth with higher Applied economy.
2. the present invention replaces steel strand wires power transmission drag-line with finished guy cable, reduces anti-upper frame deformation, and anti-top system is more steady
It is fixed, safe and reliable.
3. the present invention applies the flexible cylinder body upper band of the anti-hydraulic jack for pushing up power self-locking steel loop, greatly strengthen anti-top system
The stability of system static load pressure, makes counter to push up effect more convergence Theoretical Calculation.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of driving means in the present invention.
Fig. 3 is the structural representation of anti-upper frame in the present invention.
Fig. 4 is the structural representation of operation platform in the present invention.
Specific embodiment
Below in conjunction with specific embodiment, the present invention will be further described and explains, it should be understood that embodiments below is only used
In the scope for illustrating the present invention without limiting the present invention.
Referring to Fig. 1-Fig. 4, the invention provides a kind of π types composite beam is counter to push up system.As shown in the figure：It includes Running System
System, main frame body system, actuating system three parts.Wherein：The running gear includes walk track 1, walking dolly 2, driving dress
3 are put, the walking track 1 is arranged on composite beam beam bottom, the connection of walking dolly 2 driving means 3 are arranged on below walking track 1 simultaneously
Can walk in walking track 1；The main frame body system includes anti-upper frame 4, support bar 5, operating platform 6, and the anti-upper frame 4 is by anti-
Upper frame column 41 is arranged on above anti-upper frame 4 with the anti-upper frame lateral 42 for connecting anti-upper frame column 41, the support bar 5, the operation
Platform 6 is arranged on above support bar 5；Actuating system includes finished guy cable 7, connection otic placode 8, connecting bolt 9, hydraulic oil pump and thousand
Jin top 10, the jack 10 is attached between 4 upper end of anti-upper frame and composite beam beam bottom.
When anti-top system is in unloading, walking states, first actuating system is unloaded, that is, hydraulic oil pump is driven from very heavy
It is 0 state to push up 10 oil returns, 10 contracting cylinder of jack to oil pressure, then removes the connection spiral shell between the otic placode 8 and beam body of beam bottom connection
Bolt 9, now, by being suspended on walking track 1, starting 3 whole anti-top system of driving means is for main frame body system and actuating system
Can walk.
When anti-top system is in loading, static load state, actuating system is installed first, by between connection otic placode 8 and beam body
Connecting bolt 9 be installed in place, now main frame body system, actuating system formed triangle stress system, with running gear depart from, so
The classification of rear-guard hydrodynamic pressure oil pump is slowly sent oil, jack to stretch cylinder to jack 10 to reach design load to oil pressure, complete loading procedure；
After monitoring result is qualified, the self-locking steel loop on jack cylinder body is screwed, stress system is hydraulically operated and is converted to rigidity
Support, structure are in static load state.
The specifically used method of the present invention is as follows：
1. processing and fabricating walking track 1, walking dolly 2, anti-upper frame 4, support bar 5, operating platform 6, connection otic placode 8.
2. driving means 3, finished guy cable 7, connecting bolt 9, hydraulic oil pump and jack 10 are bought.
3. spelling is counter successively pushes up system, after the completion for the treatment of that walking track 1 is installed at beam bottom, counter will push up system hangs installed in beam
Bottom.
4. connecting bolt 9, connection otic placode 8 are installed, anti-system of pushing up is connected with beam bottom, departed from running gear, is formed triangle
Stress system.
5. slow driving hydraulic oil pump and jack 8 are classified, are applied anti-top power, after monitoring satisfaction is required, is tightened self-locking steel
Ring, structure enter static load state.
6., after the completion of static load, drive hydraulic oil pump and jack 10 to unload, remove connecting bolt 9, main frame body system, power transmission
System is supported in running gear, starts driving means 3, anti-top system walking.
As described above, preferable possible embodiments only of the invention, patent model that is non-therefore limiting to the present invention
Enclose, change with the equivalent structure carried out by description of the invention and schema content such as, manage with the right for being contained in the present invention
In the range of, Chen Ming is given in conjunction.
Claims (1)
1. a kind of π types composite beam is counter pushes up system, it is characterised in that：It includes that running gear, main frame body system, actuating system three are big
Part；Wherein：The running gear includes track of walking（1）, walking dolly（2）, driving means（3）, the walking track（1）Install
In composite beam beam bottom, the walking dolly（2）Connection driving means（3）It is arranged on walking track（1）Lower section simultaneously can be in walking rail
Road（1）Middle walking；The main frame body system includes anti-upper frame（4）, support bar（5）, operating platform（6）, the anti-upper frame（4）Pushed up by counter
Erect post（41）With the anti-upper frame column of connection（41）Anti- upper frame lateral（42）, the support bar（5）It is arranged on anti-upper frame（4）On
Side, the operating platform（6）It is arranged on support bar（5）Top；Actuating system includes finished guy cable（7）, connection otic placode（8）, connection
Bolt（9）, hydraulic oil pump and jack（10）, the jack（10）It is attached to anti-upper frame（4）Upper end and composite beam beam bottom it
Between；
When anti-top system is in unloading, walking states, first actuating system is unloaded, that is, hydraulic oil pump is driven from jack
（10）Oil return, jack（10）Contracting cylinder to oil pressure is 0 state, then removes the otic placode of beam bottom connection（8）Company between beam body
Connecting bolt（9）, now main frame body system and actuating system are by being suspended on walking track（1）On, start driving means（3）Entirely
Anti- top system can walking；
When anti-top system is in loading, static load state, actuating system is installed first, by connection otic placode（8）Between beam body
Connecting bolt（9）It is installed in place, now main frame body system, actuating system form triangle stress system, departs from running gear, so
Rear-guard hydrodynamic pressure oil pump is classified slowly to jack（10）Send oil, jack to stretch cylinder and design load is reached to oil pressure, complete to load
Journey；After monitoring result is qualified, the self-locking steel loop on jack cylinder body is screwed, stress system is hydraulically operated and is converted to rigidity
Support, structure is in static load state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610981892.7A CN106567339A (en) | 2016-11-09 | 2016-11-09 | Pi-shaped superposed beam reverse jacking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610981892.7A CN106567339A (en) | 2016-11-09 | 2016-11-09 | Pi-shaped superposed beam reverse jacking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106567339A true CN106567339A (en) | 2017-04-19 |
Family
ID=58540332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610981892.7A Pending CN106567339A (en) | 2016-11-09 | 2016-11-09 | Pi-shaped superposed beam reverse jacking system |
Country Status (1)
| Country | Link |
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| CN (1) | CN106567339A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547225A (en) * | 2018-04-27 | 2018-09-18 | 中交二公局第二工程有限公司 | A kind of assembly moving type security construction of prevention work job platform and construction method and application |
| CN109367548A (en) * | 2018-09-07 | 2019-02-22 | 奈克斯科技股份有限公司 | A kind of mobile cabin, track and three-dimensional Rail Transit System |
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| CN101555680A (en) * | 2009-04-14 | 2009-10-14 | 中铁一局集团有限公司 | Large-span Pi type socle beam construction process in non-rope area of cable stayed bridge |
| JP4377506B2 (en) * | 2000-02-15 | 2009-12-02 | 大成建設株式会社 | Bridge erection device and bridge erection method |
| CN201447670U (en) * | 2009-05-19 | 2010-05-05 | 汕头市达濠市政建设有限公司 | Multi-jack synchronous linkage jacking device for bridges |
| CN105603877A (en) * | 2015-12-24 | 2016-05-25 | 中铁大桥局集团第二工程有限公司 | Large-span cable-stayed bridge steel beam locking and adjusting method |
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2016
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Patent Citations (4)
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| JP4377506B2 (en) * | 2000-02-15 | 2009-12-02 | 大成建設株式会社 | Bridge erection device and bridge erection method |
| CN101555680A (en) * | 2009-04-14 | 2009-10-14 | 中铁一局集团有限公司 | Large-span Pi type socle beam construction process in non-rope area of cable stayed bridge |
| CN201447670U (en) * | 2009-05-19 | 2010-05-05 | 汕头市达濠市政建设有限公司 | Multi-jack synchronous linkage jacking device for bridges |
| CN105603877A (en) * | 2015-12-24 | 2016-05-25 | 中铁大桥局集团第二工程有限公司 | Large-span cable-stayed bridge steel beam locking and adjusting method |
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| 刘国波等: "东海大桥VII标主桥斜拉桥预应力混凝土桥面板的施工技术", 《公路》 * |
| 桂业琨等: "大跨度叠合梁斜拉桥施工技术的综合研究", 《建筑施工》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547225A (en) * | 2018-04-27 | 2018-09-18 | 中交二公局第二工程有限公司 | A kind of assembly moving type security construction of prevention work job platform and construction method and application |
| CN109367548A (en) * | 2018-09-07 | 2019-02-22 | 奈克斯科技股份有限公司 | A kind of mobile cabin, track and three-dimensional Rail Transit System |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170419 |
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