CN106088660A - The construction method of reconstruction structure system widened by a kind of building up station platform - Google Patents
The construction method of reconstruction structure system widened by a kind of building up station platform Download PDFInfo
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- CN106088660A CN106088660A CN201610660223.XA CN201610660223A CN106088660A CN 106088660 A CN106088660 A CN 106088660A CN 201610660223 A CN201610660223 A CN 201610660223A CN 106088660 A CN106088660 A CN 106088660A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0266—Enlarging
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C3/11—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with non-parallel upper and lower edges, e.g. roof trusses
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Abstract
The construction method of reconstruction structure system widened by a kind of building up station platform, widens the steel beam column of steel construction including preprocessing platform, reinforces the frame column of former frame structure, reinforces framed bent steel column, installs central sill, installs side bar and mounting structure adds the steps such as Wide Worktable.The present invention platform is widened the steel beam column of transformation part by central sill, encorbelment side bar and steel construction adds Wide Worktable piecemeal and constructs, the operation rationally accurate engineering time, ensure the duration, by carrying out widening transformation by the early stage subway station that cannot meet existing passenger flow, a new trend for following metro industry sums up construction experience, fill up the blank of track traffic industry, reference will be provided for later rebuilding construction.
Description
Technical field
The present invention relates to structural steelwork construction field, particularly one building up station platform is carried out structure and widens transformation
The construction method of structural system.
Background technology
Along with the development of City Rail Transit System, subway sometimes because build environment factor and by part track laying
On ground, and the time is set up relatively early in many subway stations, and existing platform scale cannot meet existing passenger flow, with stylish
Increasing circuit inevitably needs the carrying out between original circuit to change to, therefore when transfer condition do not reserved by existing platform,
For realizing transfer and accommodating the dual requirements of passenger flow, then need to increase the handling capacity of passengers of existing platform own, also existing platform is entered
Row widens transformation.Therefore building up station transformation will be become a trend of the metro industry coming years, particularly by existing car
Station carries out widening improvement project and predictably will increase year by year.
Subway relatively big due to its handling capacity of passengers convenience day, if carrying out transformation in the case of existing line is stopped transport will add big city
City's transportation pressure.And the engineering in the case of not stopping transport, subway platform transformed, it is allowed to workman's engineering time is relatively
Short, it is necessary to be the period of subway not carrying in evening, do not waste when time preciousness needs workman to construct and carry out second by second, not only
Requirement to workman's constructing operation is the highest, and construction method proposes the highest requirement simultaneously.Therefore there is presently no maturation
Construction technology and technology.
Specifically there is techniques below difficult point:
1, construction site is restricted, and lifting need to take road surface temporarily, and construction site is narrow and small, and crane position can not have most by lifting
Profit orientation put, cause lifting efficiency to reduce, simultaneously scaffold setting up, to remove available place very limited, the same day
After each step of having constructed, all can not affect second day normal operation of subway and road surface road normal pass.
2, the engineering time is restricted, takies the road surface that traffic flow is big, can only account for road at night (0:00-5:00) temporarily execute
Work；Secondly, widen the transport of transformation partial component, install and need to carry out on operational railway, the necessary power-off of work progress middle orbit,
According to previous experiences, track power-off time section is (0:00-3:30), for ensureing second day normal operation of subway, before removing construction
Time, the ending time after terminating of constructing, the effective time of every day is only 0:30-03:30.
Summary of the invention
It is an object of the invention to provide a kind of building up station platform and widen reconstruction structure system and construction method thereof, solve
And building up station the most limited in place and time carries out widening the technical problem of improvement project in the case of not stopping transport.
For achieving the above object, the present invention adopts the following technical scheme that
The construction method of reconstruction structure system widened by a kind of building up station platform, and this is widened reconstruction structure system and includes building up station
Part, described building up station part includes the train rail row structure of common carrying in former frame structure, former frame structure and former station
The original structure roof girder of the top carrying of the framed bent steel column of carrying, framed bent steel column on platform structure, former platform structure, this widens transformation
Transformation part widened by the platform that structural system is set up on the basis of being additionally included in building up station part, and transformation portion widened by described platform
Dividing and include that steel construction widened by former frame reinforcing structure, framed bent steel column ruggedized construction and platform, described platform is widened steel construction and is included
By the carrying of framed bent steel column, the Steel Truss Beam set up of the lower section of original structure roof girder, this Steel Truss Beam be divided into central sill and two encorbelment
Side bar, described platform is widened steel construction and is also included that being suspended in the steel construction encorbelmenting on side bar by suspending rod adds Wide Worktable, described
Steel construction adds Wide Worktable and is positioned at former platform structure and the outside of former frame structure；
This widens the construction method of reconstruction structure system, and construction procedure is as follows:
Step one, in factory, preprocessing platform is widened the steel beam column of steel construction and is transported to job site；
Step 2, carries out reinforcing the former frame reinforcing structure of formation to the frame column of former frame structure；
Step 3, carries out framed bent steel column reinforcing formation framed bent steel column ruggedized construction；
Step 4, installs central sill and comprises the following steps:
The power-off of S1, Gui Hang district, the special transport vehicle installing rail wheel additional of artificial promotion, transport vehicle is by its in train rail row structure
In operational railway central sill is horizontal lying state under deliver to the obliquely downward of its position to be installed；
S2, original structure roof girder is positioned at the surface of central sill position to be installed, and at the middle part of original structure roof girder, main lifting is hung by system
Calabash, is to hang two secondary lifting calabashs respectively in two ends of original structure roof girder；
S3, promotes, by main, the middle part that calabash is fixed on the top boom of central sill by bandage, and is connected with main lifting calabash by bandage
Firmly；
S4, will promote, with the secondary of operational railway homonymy, the middle part that calabash is fixed on the lower boom of central sill by bandage, and by bandage
Promoting calabash with pair to be connected firmly, two ends at the lower boom of central sill connect pull rope simultaneously；
S5, separates central sill obliquely from transport vehicle and carries out eccentric lifting: workmen is positioned at the centre position of two tracks
Top circularly enhancing main lifting calabash, other workmen on the platform of operational railway side according to main promote calabash speed
Degree, promotes calabash by Synchronous lifting pair, and pulling traction rope manually draws simultaneously, makes to guarantee in lifting process that central sill does not turns
Dynamic disengaging transport vehicle, central sill is become vertical vertically-arranged by horizontal lying, and central sill also remains vertical with original structure roof girder simultaneously
It is promoted to the top of subway shield door；
S6, central sill horizontally rotate: workmen stand in platform both sides continue through synchronization pulling traction rope manually draw central sill
Rotate to the position the most parallel with original structure roof girder, to guarantee not bump to subway shield door and other set in whole rotary course
Standby facility is as the criterion；
S7, central sill changes a lifting in the air: after middle beam rotary to the position the most parallel with original structure roof girder, is promoted calabash by main and led
The position of central sill fixed by messenger, after untiing the secondary bandage promoting calabash, by changing a little in the air, by two secondary lifting calabashs respectively
It is fixed on two ends of the top boom of central sill, workmen's Synchronous lifting of both sides, until predetermined position；
S8, fixes central sill with framed bent steel column；
S9, withdraws from main lifting calabash and transport vehicle and other man-machine material；
S10, repeats above construction procedure and is sequentially completed the installation of each central sill, then withdraws from secondary lifting calabash.
Step 5, installs encorbelment side bar and suspending rod；
Step 6, installs steel construction and adds Wide Worktable.
After central sill is divided into bracket limit section, prefabricated stage casing and two sections, extension bar is not installed；
In described step 4, the installation of central sill is the installation in prefabricated stage casing；
Before S1, the location site to central sill to be installed on framed bent steel column welds bracket limit section, and welding edge in the section of bracket limit
Section location-plate, the end in prefabricated stage casing is welded with the stage casing location-plate corresponding with limit section location-plate in advance；
In S8, prefabricated stage casing location-plate is alignd with being connected on bracket location-plate, then by spot welding between location-plate, makes prefabricated
Stage casing is connected to one with bracket limit section；The two ends of rear extension bar are respectively connecting to bracket limit section by extension bar after then installing
And form complete girder truss between prefabricated stage casing；
Described step 3 comprises the steps:
S1, removes hindering the redundant structure setting up reinforcing operating platform on former platform structure；
S2, sets up reinforcing operating platform: the situation protruding from framed bent steel column for the outline of adaptogen platform structure is different, according to
The operating platform diverse location on former platform structure of taking root of reinforcing of each framed bent steel column carries out classification design and installation；
S3, construction reinforcement layer anticorrosion are checked and accepted.
Described step 5 comprises the following steps:
S1, side bar of encorbelmenting assembles with suspending rod；
S2, suspension centre fixes: by bottle gouard moved by hands on the inner side tie-beam of the lower boom of side bar of encorbelmenting, and on this beam, bottle gouard moved by hands connects and ties up
One end of band, the direct other end with bandage in the outside of side bar top boom of encorbelmenting is fixed, and changes a preparation in the air for next step；
S3, vertical-lift: connect pull rope, workmen all the time in hoisting process outside the bandage of side bar top boom of encorbelmenting
Standing in outside platform and to use pull rope to ensure the stationarity of component on road surface, crane connects bandage side bar of encorbelmenting and hangs with suspending rod
To specified altitude assignment；
S4, changes a little in the air: on the post that will be fixed in advance on framed bent steel column, bottle gouard moved by hands is connected fixing with the inner side of side bar of encorbelmenting；
S5, level advances: by bottle gouard moved by hands on the beam on crane and bottle gouard moved by hands regulation lifting weight on the post on framed bent steel column
The heart, the side bar that makes to encorbelment is in position；
S6, is welded and fixed: welding personnel completes weld job on the lift truck on crane side, will encorbelment side bar and framed bent steel column
Fixing.
Described step 6 comprises the following steps:
S1, job site is investigated: steel construction adds Wide Worktable in the outside of the outside of former platform structure and former frame structure
Fixing point punching quantity, buried plate quantity and existing facility are removed component situation and are investigated；
S2, reinforcing bar detection is with boring: according to design drawing requirement, it is ensured that do not reduce the carrying of former platform structure in drill process
Power, between bore position and existing former platform structure steel bar stress, spacing is not less than 5cm, starts after job platform is set up
Boring, bore diameter is more than crab-bolt diameter；
S3, lifting is fixing: each truss that steel construction adds Wide Worktable is fabricated to assembled cell cube by axis, by assembly cell cube
Pricncipal rafter fix with crane bandage；
S4, vertical-lift: assembled cell cube is promoted by the crane being positioned at outside platform on road surface；
S5, anchoring is fixing: workmen is on the lift truck on crane side, by assembly cell cube and former platform structure and former frame
Shelf structure is all fixed by anchor bolts；
S6, is welded and fixed: assembly cell cube, on the lift truck on crane side, is fixed by workmen with suspending rod；
S7, is sequentially connected with assembled cell cube and connects into steel construction to add Wide Worktable overall.
Construction intercolumniation linking beam between framed bent steel column.
Construction column braces bar between framed bent steel column and intercolumniation linking beam.
After described step 5, at linking beam between construction beam of encorbelmenting between side bar.
After described step 6, support bar between bar of constructing between linking beam and suspending rod between beam.
After described step 5, at framed bent steel column and hound of constructing between side bar of encorbelmenting.
Compared with prior art the invention have the characteristics that and beneficial effect:
The present invention is the construction transformed station platform in the case of not stopping transport in existing operated subway station, will station
Platform widen the steel beam column of transformation part by central sill, encorbelment side bar and steel construction adds Wide Worktable piecemeal and constructs, operation is the most smart
The really engineering time, it is ensured that duration.
The central sill section construction of the present invention, improves central sill and need to be welded on the framed bent steel column through reinforcing by circular weld
On, it is not necessary to wait until that all pillars weld central sill after having reinforced again, it is ensured that the node duration；In the case of the engineering time is limited,
Prefabricated stage casing can be processed in advance, the framed bent steel column reinforced is fixed bracket limit section, eliminate size by bracket limit section
Error, sets up a yard plate, beneficially Fast Installation on prefabricated stage casing and fixing bracket limit section in place simultaneously, can cannot expire again
In the case of weldering, by main positions spot welding, code plate and spot welded joint is relied on to guarantee that prefabricated stage casing is stabilized in the section of bracket limit, the
Within two days, carry out repair welding work.
The central sill of the present invention takes the transport vehicle of particular design, utilizes the operational railway fortune to widening transformation partial component
Defeated and install, simultaneously by main portable liter of calabash, secondary promote calabash and pull rope cooperate and row district sets up foot in-orbit
Hand cradle and stand in the first-class position of existing grandstand complete beam body to sling, the step such as suspension centre conversion and installation；Side bar then utilizes platform
Large-scale crane on road surface, outside, promote cooperating of calabash and pull rope complete beam body to sling, suspension centre conversion and installing
Etc. step；Steel construction adds large-scale crane that Wide Worktable is then divided into cell cube to utilize outside platform on road surface and lift truck is executed
Work, each step, through tight design, reduces the construction operation time, it is ensured that the duration.
The present invention is by carrying out widening transformation by the early stage subway station that cannot meet existing passenger flow, for following subway row
One new trend of industry sums up construction experience, has filled up the blank of track traffic industry, will provide ginseng for later rebuilding construction
Examine.
Accompanying drawing explanation
The present invention will be further described in detail below in conjunction with the accompanying drawings.
Fig. 1 is the transversary schematic diagram of present configuration system.
Fig. 2 is the vertical structure schematic diagram of present configuration system.
Fig. 3 is the schematic diagram of construction method step four S1 of the present invention.
Fig. 4 is the schematic diagram that construction method step four S2 system's extension major and minor lifting calabash of the present invention completes.
Fig. 5 is the schematic diagram of construction method step four S5 of the present invention.
Fig. 6 is the schematic diagram of construction method step four S7 of the present invention.
Fig. 7 is the schematic diagram that construction method step four S7 of the present invention completes.
Fig. 8 is the schematic diagram that construction method step four S8 of the present invention completes.
Fig. 9 is the structural representation that central sill segmentation connects.
Figure 10 is the schematic diagram after construction method step five S5 of the present invention completes
The former frame structure of reference: 1-, 2-train rail row structure, the former platform structure of 3-, 4-framed bent steel column, the former knot of 5-
After structure roof girder, 6-structure roofing, 7-central sill, 7.1-bracket limit section, the prefabricated stage casing of 7.2-, 7.3-, extension bar, 8-encorbelment
Side bar, 9-suspending rod, 10-steel construction add Wide Worktable, 11-limit section location-plate, 12-stage casing location-plate, 13-intercolumniation link
Support bar, 17-hound, 18-operational railway, 19-between linking beam, 16-bar between beam, 14-column braces bar, 15-beam
Manual calabash on bottle gouard moved by hands, 24-post on main lifting calabash, 20-pair lifting calabash, 21-pull rope, 22-crane, 23-beam
Reed.
Detailed description of the invention
Existing subway A circuit is through the diameter line in city, is a class skeleton circuit.Large-scale society along with next-door neighbour's subway
District rises, and A circuit transport power burden is increasing.Certain subway B circuit is the rail line that central city connects new city, and two important
Circuit need on A circuit certain station realize transfer, facilitate the citizens' activities of large-scale community.Certain erect-position on ground, car
Road surface, both sides vehicle flowrate of standing is relatively big, and A line passenger flow is huge simultaneously, and platform load factor has reached 120%, and former platform width is the most not
Reserved transfer condition, must widen transformation to the existing platform of A circuit for realizing transfer.
The present embodiment sees shown in Fig. 1-2, and this building up station platform is widened reconstruction structure system and included building up station portion
Point, described building up station part includes the train rail row structure 2 of common carrying in former frame structure 1, former frame structure 1 and former station
The original structure roof girder of the top carrying of the framed bent steel column 4 of carrying, framed bent steel column 4 on platform structure 3, former platform structure 3, this is widened
Transformation part widened by the platform that reconstruction structure system is set up on the basis of being additionally included in building up station part, and described platform is widened and changed
Making part and include that steel construction widened by former frame reinforcing structure, framed bent steel column ruggedized construction and platform, steel construction widened by described platform
Including the Steel Truss Beam carried by framed bent steel column 4, the lower section of original structure roof girder is set up, this Steel Truss Beam is divided into central sill 7 and two
Individual side bar 8 of encorbelmenting, described platform is widened steel construction and is also included that being suspended in, by suspending rod 9, the steel construction encorbelmented on side bar 8 widens
Platform 10, described steel construction adds Wide Worktable 10 and is positioned at former platform structure 3 and the outside of former frame structure 1.
For confirming the feasibility of construction method, need before construction to utilize prototype software, to central sill, side bar of encorbelmenting, steel construction
Add the hanging method simulation of Wide Worktable, to confirm the feasibility of hoisting.Processing place can also be rented, simulate reality completely
Operating mode, carries out " 1:1 " and drills on the spot, further confirms that the feasibility of hanging method, and determines the timing node of each operation, in order to
Preferably control the engineering time at the scene.
This widens the construction method of reconstruction structure system, and Specific construction step is as follows:
Step one, in factory, preprocessing platform is widened the steel beam column of steel construction and is transported to job site.
Step 2, carries out reinforcing the former frame reinforcing structure of formation, for example with Covered with Angles to the frame column of former frame structure
The reinforcing mode of plate, runs into the cylinder that can not use steel clad reinforcement mode, both sides can be used to increase steel strut newly and help concrete
Unloading.
Step 3, carries out framed bent steel column 4 reinforcing formation framed bent steel column ruggedized construction, for example with the mode of outside steel pipe
Reinforce；Comprise the following steps:
S1, removes hindering the redundant structure setting up reinforcing operating platform on former platform structure 3；
S2, sets up reinforcing operating platform: the situation protruding from framed bent steel column for the outline of adaptogen platform structure is different, according to
The diverse location that the reinforcing operating platform of each framed bent steel column 4 is taken root on former platform structure 3 carries out classification design and installation；
S3, construction reinforcement layer anticorrosion are checked and accepted.
Step 4, installs central sill 7 and comprises the following steps:
S1 is shown in Figure 3, the power-off of Gui Hang district, the special transport vehicle installing rail wheel additional of artificial promotion, and train rail is passed through in transport vehicle
Wherein operational railway 18 in row structure by deliver under the central sill 7 state in horizontal lying its position to be installed oblique under
Side；
S2 is shown in Figure 4, and original structure roof girder 5 is positioned at the surface of central sill 7 position to be installed, 3 workmans hold aluminum and close
Gold ladder hangs main lifting calabash 19 in the middle part of original structure roof girder 5 system, is wherein held up aluminium-alloy ladder by 2 workmans, and 1 workman carries
Main lifting calabash creep aluminium-alloy ladder system hang；Both sides platform respectively by 6 workmans, sets up traveling centering simultaneously, by one
Worker stands is to hang two secondary lifting calabashs 20 on traveling centering respectively the two of original structure roof girder 5 ends；
S3, promotes, by main, the middle part that calabash 19 is fixed on the top boom of central sill 7 by bandage, and by bandage and main lifting calabash 19
It is connected firmly；
S4, will promote, with the secondary of operational railway 18 homonymy, the middle part that calabash 20 is fixed on the lower boom of central sill 7 by bandage, and will
Bandage is connected firmly with secondary lifting calabash 20, and two ends at the lower boom of central sill 7 connect pull ropes 21 simultaneously；
S5 is shown in Figure 5, is separated obliquely by central sill 7 and carries out eccentric lifting: workmen 6-8 is positioned at two from transport vehicle
The top circularly enhancing main lifting calabash 19 in the centre position of track, the other workmen platform in operational railway side
On according to main promote calabash speed by Synchronous lifting pair promote calabash 20, other workmen's pulling traction rope is artificial simultaneously
Traction, makes to guarantee in lifting process that central sill 7 does not steadily rotate disengaging transport vehicle, central sill 7 is become vertical vertically-arranged by horizontal lying, with
Shi Zhongliang 7 and original structure roof girder 5 also remain that vertical-lift is to the top of subway shield door；
S6, central sill horizontally rotates: two workmens stand in platform both sides and continue through synchronization pulling traction rope 21 and manually draw
By middle beam rotary to the position parallel with original structure roof girder 5, to guarantee not bump to subway shield door in whole rotary course
And other installations and facilities are as the criterion；
S7 sees shown in Fig. 6-7, and central sill changes a lifting in the air: after middle beam rotary to the position the most parallel with original structure roof girder 5, by
The position of central sill fixed by main lifting calabash 19 and pull rope, after untiing the secondary bandage promoting calabash 20, by changing a little in the air, and will
Two secondary promotes two ends that calabash 20 is separately fixed at the top boom of central sill, workmen's Synchronous lifting of both sides, until
Predetermined position；
S8 sees shown in Fig. 8-9, is fixed with framed bent steel column by central sill；
S9, withdraws from main lifting calabash and transport vehicle and other man-machine material；
S10, repeats above construction procedure and is sequentially completed the installation of each central sill, then withdraws from secondary lifting calabash.
After central sill 7 being divided into bracket limit section 7.1, prefabricated stage casing 7.2 and two sections in the present embodiment, extension bar 7.3 is not pacified
Dress；In the most described step 4, the installation of central sill 7 is the installation in prefabricated stage casing 7.2；
Before S1, the location site of central sill to be installed on framed bent steel column 4 is welded bracket limit section 7.1, and in bracket limit section 7.1
Upper welding edge section location-plate 11, the end in prefabricated stage casing 7.2 is welded with the stage casing location corresponding with limit section location-plate 11 in advance
Plate 12；
In S8, prefabricated stage casing location-plate is alignd with being connected on bracket location-plate, then by spot welding between location-plate, makes prefabricated
Stage casing 7.2 is connected to one with bracket limit section 7.1；The two ends of rear extension bar are respectively connecting to by extension bar 7.3 after then installing
Complete girder truss is formed between bracket limit section 7.1 and prefabricated stage casing 7.2.
Step 5, participates in Figure 10 and installs encorbelment side bar 8 and suspending rod 9；
Comprise the following steps:
S1, side bar 8 of encorbelmenting assembles with suspending rod 9；
S2, suspension centre fixes: by bottle gouard moved by hands 23 on the inner side tie-beam of the lower boom of side bar of encorbelmenting, and on this beam, bottle gouard moved by hands 23 is even
Connecing one end of bandage, the direct other end with bandage in the outside of side bar top boom of encorbelmenting is fixed, and changes a preparation in the air for next step；
S3, vertical-lift: connect pull rope, workmen all the time in hoisting process outside the bandage of side bar top boom of encorbelmenting
Standing in and use pull rope to ensure the stationarity of component outside platform on road surface, crane 22 connects bandage and will encorbelment side bar 8 and suspend in midair
Bar 9 winches to specified altitude assignment；
S4, changes a little in the air: on the post that will be fixed in advance on framed bent steel column, bottle gouard moved by hands 24 is connected solid with the inner side of side bar of encorbelmenting
Fixed；
S5, level advances: hung with bottle gouard moved by hands 24 regulation on the post on framed bent steel column by bottle gouard moved by hands 23 on the beam on crane
Dress center of gravity, the side bar that makes to encorbelment is in position；
S6, is welded and fixed: welding personnel completes weld job on the lift truck on crane side, will encorbelment side bar 8 and framed bent steel
Post 4 is fixed.
Step 6, installs steel construction and adds Wide Worktable 10；
Comprise the following steps:
S1, job site is investigated: steel construction adds Wide Worktable in the outside of former platform structure 3 and the outside of former frame structure 1
Fixing point punching quantity, buried plate quantity and existing facility remove component situation and investigate；
S2, reinforcing bar detection is with boring: according to design drawing requirement, it is ensured that do not reduce the carrying of former platform structure 3 in drill process
Power, between bore position and existing former platform structure 3 steel bar stress, spacing is not less than 5cm, opens after job platform is set up
Beginning to hole, bore diameter is more than crab-bolt diameter；
S3, lifting is fixing: each truss that steel construction adds Wide Worktable is fabricated to assembled cell cube by axis, by assembly cell cube
Pricncipal rafter fix with crane bandage；
S4, vertical-lift: assembled cell cube is promoted by the crane being positioned at outside platform on road surface；
S5, anchoring is fixing: workmen is on the lift truck on crane side, by assembly cell cube and former platform structure 3 and former
Frame structure 1 is all fixed by anchor bolts；
S6, is welded and fixed: assembly cell cube, on the lift truck on crane side, is fixed by workmen with suspending rod 9；
S7, is sequentially connected with assembled cell cube and connects into steel construction to add Wide Worktable overall.
Construction intercolumniation linking beam 13 between framed bent steel column 4.
Construction column braces bar 14 between framed bent steel column 4 and intercolumniation linking beam 13.
After described step 5, in linking beam 15 between construction beam of encorbelmenting between side bar.
After described step 6, support bar 16 between bar of constructing between linking beam 15 and suspending rod 9 between beam.
After described step 5, at framed bent steel column 4 and hound 17 of constructing between side bar 8 of encorbelmenting.
Claims (10)
1. a construction method for reconstruction structure system widened by building up station platform, and this is widened reconstruction structure system and includes existing car
Standing part, described building up station part includes the train rail row knot of the upper common carrying of former frame structure (1), former frame structure (1)
Structure (2) carries with former platform structure (3), the framed bent steel column (4) of the upper carrying of former platform structure (3), the top of framed bent steel column (4)
Original structure roof girder, it is characterised in that: this is widened and sets up on the basis of reconstruction structure system is additionally included in building up station part
Transformation part widened by platform, and described platform is widened transformation part and included former frame reinforcing structure, framed bent steel column ruggedized construction and station
Platform widens steel construction, and described platform is widened steel construction and included being set up by framed bent steel column (4) carrying, the lower section of original structure roof girder
Steel Truss Beam, this Steel Truss Beam is divided into central sill (7) and two side bars of encorbelmenting (8), and described platform is widened steel construction and also included passing through
The steel construction that suspending rod (9) is suspended on side bar of encorbelmenting (8) adds Wide Worktable (10), and described steel construction adds Wide Worktable (10) and is positioned at former
Platform structure (3) and the outside of former frame structure (1)；
This widens the construction method of reconstruction structure system, and construction procedure is as follows:
Step one, in factory, preprocessing platform is widened the steel beam column of steel construction and is transported to job site；
Step 2, carries out reinforcing the former frame reinforcing structure of formation to the frame column of former frame structure；
Step 3, carries out framed bent steel column (4) reinforcing formation framed bent steel column ruggedized construction；
Step 4, installs central sill (7) and comprises the following steps:
The power-off of S1, Gui Hang district, the special transport vehicle installing rail wheel additional of artificial promotion, transport vehicle is by its in train rail row structure
In operational railway (18) obliquely downward of its position to be installed will be delivered under the central sill (7) state in horizontal lying；
S2, original structure roof girder (5) is positioned at the surface of central sill (7) position to be installed, at the middle part of original structure roof girder (5) is
Hang main lifting calabash (19), be to hang two secondary liftings calabash (20) respectively in two ends of original structure roof girder (5)；
S3, promotes, by main, the middle part that calabash (19) is fixed on the top boom of central sill (7) by bandage, and by bandage and main lifting calabash
Reed is connected firmly；
S4, is fixed on the middle part of the lower boom of central sill (7) by secondary lifting calabash (20) with operational railway homonymy by bandage, and
Being connected firmly with secondary lifting calabash by bandage, two ends at the lower boom of central sill (7) connect pull rope (21) simultaneously；
S5, separates central sill (7) obliquely from transport vehicle and carries out eccentric lifting: workmen is positioned at the interposition of two tracks
Put circularly enhancing main lifting calabash (19), other workmen on the platform of operational railway side according to main promote calabash speed
Degree, promotes calabash (20) by Synchronous lifting pair, and pulling traction rope manually draws simultaneously, makes to guarantee central sill (7) in lifting process
Steadily not rotating disengaging transport vehicle, central sill (7) is become vertical vertically-arranged, simultaneously central sill (7) and original structure roof girder by horizontal lying
(5) also remain that vertical-lift is to the top of subway shield door；
S6, central sill horizontally rotate: workmen stand in platform both sides continue through synchronization pulling traction rope (21) manually draw by
Middle beam rotary is to the position parallel with original structure roof girder (5), to guarantee not bump to subway shield door in whole rotary course
And other installations and facilities are as the criterion；
S7, central sill changes a lifting in the air: after middle beam rotary to the position the most parallel with original structure roof girder (5), by main lifting calabash
And the position of central sill fixed by pull rope (19), after untiing the secondary bandage promoting calabash, by changing a little in the air, two secondary are promoted
Calabash (20) is separately fixed at two ends of the top boom of central sill, workmen's Synchronous lifting of both sides, until predetermined position；
S8, fixes central sill with framed bent steel column；
S9, withdraws from main lifting calabash and transport vehicle and other man-machine material；
S10, repeats above construction procedure and is sequentially completed the installation of each central sill, then withdraws from secondary lifting calabash；
Step 5, installs encorbelment side bar (8) and suspending rod (9)；
Step 6, installs steel construction and adds Wide Worktable (10).
The construction method of reconstruction structure system widened by building up station platform the most according to claim 1, it is characterised in that: will
After central sill (7) is divided into bracket limit section (7.1), prefabricated stage casing (7.2) and two sections, extension bar (7.3) is not installed；
In described step 4, the installation of central sill (7) is the installation of prefabricated stage casing (7.2)；
Location site welding bracket limit section (7.1) of to be installed central sill upper to framed bent steel column (4) before S1, and in bracket limit section
(7.1) upper welding edge section location-plate (11), the end of prefabricated stage casing (7.2) is welded with corresponding with limit section location-plate (11) in advance
Stage casing location-plate (12)；
In S8, prefabricated stage casing location-plate is alignd with being connected on bracket location-plate, then by spot welding between location-plate, makes prefabricated
Stage casing (7.2) is connected to one with bracket limit section (7.1)；Then extension bar (7.3) after installing, by the two ends of rear extension bar respectively
It is connected between bracket limit section (7.1) and prefabricated stage casing (7.2) form complete girder truss.
The construction method of reconstruction structure system widened by building up station platform the most according to claim 1 and 2, and its feature exists
In: described step 3 comprises the steps:
S1, hinders the redundant structure setting up reinforcing operating platform to remove to former platform structure (3) is upper；
S2, sets up reinforcing operating platform: the situation protruding from framed bent steel column for the outline of adaptogen platform structure is different, according to
The diverse location that the reinforcing operating platform of each framed bent steel column (4) is taken root on former platform structure (3) carries out classification design and peace
Dress；
S3, construction reinforcement layer anticorrosion are checked and accepted.
The construction method of reconstruction structure system widened by building up station platform the most according to claim 1, it is characterised in that: institute
State in step 5 and comprise the following steps:
S1, side bar (8) of encorbelmenting assembles with suspending rod (9)；
S2, suspension centre fixes: by bottle gouard moved by hands (23) on the inner side tie-beam of the lower boom of side bar of encorbelmenting, and on this beam, bottle gouard moved by hands is even
Connecing one end of bandage, the direct other end with bandage in the outside of side bar top boom of encorbelmenting is fixed, and changes a preparation in the air for next step；
S3, vertical-lift: connect pull rope, workmen all the time in hoisting process outside the bandage of side bar top boom of encorbelmenting
Stand in outside platform and on road surface, to use pull rope to ensure the stationarity of component, crane (22) connect bandage will encorbelment side bar (8) and
Suspending rod (9) winches to specified altitude assignment；
S4, changes a little in the air: on the post that will be fixed in advance on framed bent steel column (4), bottle gouard moved by hands (24) connects with the inner side of side bar of encorbelmenting
Connect fixing；
S5, level advances: adjusted with bottle gouard moved by hands (24) on the post on framed bent steel column by bottle gouard moved by hands (23) on the beam on crane
Joint lifting center of gravity, the side bar that makes to encorbelment is in position；
S6, is welded and fixed: welding personnel completes weld job on the lift truck on crane side, will encorbelment side bar (8) and framed bent
Steel column (4) is fixed.
5. widen the construction method of reconstruction structure system according to the building up station platform described in claim 1 or 4, its feature exists
In: described step 6 comprises the following steps:
S1, job site is investigated: steel construction adds Wide Worktable in the outside of former platform structure (3) and former frame structure (1)
Fixing point punching quantity, buried plate quantity and the existing facility in outside are removed component situation and are investigated；
S2, reinforcing bar detection is with boring: according to design drawing requirement, it is ensured that do not reduce holding of former platform structure (3) in drill process
Load power, between bore position and existing former platform structure (3) steel bar stress, spacing is not less than 5cm, sets up complete at job platform
After start boring, bore diameter be more than crab-bolt diameter；
S3, lifting is fixing: each truss that steel construction adds Wide Worktable is fabricated to assembled cell cube by axis, by assembly cell cube
Pricncipal rafter fix with crane bandage；
S4, vertical-lift: assembled cell cube is promoted by the crane being positioned at outside platform on road surface；
S5, anchoring is fixing: workmen on the lift truck on crane side, by assembly cell cube and former platform structure (3) and
Former frame structure (1) is all fixed by anchor bolts；
S6, is welded and fixed: assembly cell cube, on the lift truck on crane side, is fixed by workmen with suspending rod (9)；
S7, is sequentially connected with assembled cell cube and connects into steel construction to add Wide Worktable overall.
The construction method of reconstruction structure system widened by building up station platform the most according to claim 1, it is characterised in that:
Construction intercolumniation linking beam (13) between framed bent steel column (4).
The construction method of reconstruction structure system widened by building up station platform the most according to claim 6, it is characterised in that:
Construction column braces bar (14) between framed bent steel column (4) and intercolumniation linking beam (13).
The construction method of reconstruction structure system widened by building up station platform the most according to claim 1, it is characterised in that: institute
After stating step 5, in linking beam (15) between construction beam of encorbelmenting between side bar.
The construction method of reconstruction structure system widened by building up station platform the most according to claim 8, it is characterised in that: institute
After stating step 6, support bar (16) between bar of constructing between linking beam (15) and suspending rod (9) between beam.
The construction method of reconstruction structure system widened by building up station platform the most according to claim 1, it is characterised in that:
After described step 5, hound (17) of constructing between framed bent steel column (4) and side bar of encorbelmenting (8).
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| CN114482600A (en) * | 2022-01-17 | 2022-05-13 | 中铁工程设计咨询集团有限公司 | Single-channel stress compensation type high-speed rail station widening structure and construction method thereof |
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| CN113235972A (en) * | 2021-05-28 | 2021-08-10 | 中铁五局集团建筑工程有限责任公司 | Trolley for dismantling existing station canopy and construction method |
| CN114482600A (en) * | 2022-01-17 | 2022-05-13 | 中铁工程设计咨询集团有限公司 | Single-channel stress compensation type high-speed rail station widening structure and construction method thereof |
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