CN109812022A - Diclinic arch holds Hyperbolic Paraboloid Cable Networks Structures construction method - Google Patents
Diclinic arch holds Hyperbolic Paraboloid Cable Networks Structures construction method Download PDFInfo
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Abstract
The invention discloses diclinic arches to hold Hyperbolic Paraboloid Cable Networks Structures construction method, and solving the problems, such as the prior art, difficulty of construction is big, construction is unable to normalizing operation and construction efficiency is low.The present invention is the following steps are included: step 1, diclinic arch hold processing；Step 2, gravity type are anti-to push away basic pile foundation and foundation pit construction；Step 3, main arch arch springing support frame are set up；Step 4, arch springing construction；Step 5 is set up diclinic arch and is held and encircles body bracket；Step 6, diclinic arch hold arch figure installation；Step 7, diclinic arch hold arch figure and close up；Step 8, bracket Deformation Monitoring；Step 9, rope disk are set up；Step 10, the construction of rope net laying；Step 11 promotes tooling installation；Step 12, rope net promote tensioning；It constructs and completes after step 13, striking.Design is scientific and reasonable for construction method of the present invention, can standardized construction, difficulty of construction can be effectively reduced, construction rhythm is compact, can effectively improve construction efficiency, shortens the construction period.
Description
Technical field
The present invention relates to diclinic arches to hold Hyperbolic Paraboloid Cable Networks Structures construction method.
Background technique
Diclinic arch holds Hyperbolic Paraboloid Cable Networks Structures and installs cable net structure on hyperbolic-parabolic because it need to encircle to hold in diclinic, applies
Work difficulty is big, and there are no standardized construction methods for the prior art, meanwhile, existing installation low efficiency, duration progress is slow.Cause
This, designs a kind of diclinic arch and holds Hyperbolic Paraboloid Cable Networks Structures construction method, diclinic arch is enable to hold Hyperbolic Paraboloid Cable Networks Structures
Making the gradeization construction improves construction efficiency to reduce difficulty of construction, shortens the construction period, becomes technical field technology people
Member's technical problem urgently to be resolved.
Summary of the invention
The technical problem to be solved by the present invention is providing diclinic arch holds Hyperbolic Paraboloid Cable Networks Structures construction method, solve
The problem that difficulty of construction is big for the prior art, construction is unable to normalizing operation and construction efficiency is low.
To achieve the above object, The technical solution adopted by the invention is as follows:
Diclinic arch holds Hyperbolic Paraboloid Cable Networks Structures construction method, comprising the following steps:
Step 1, diclinic arch hold processing, diclinic arch hold be segmented in factory it is prefabricated, be segmented it is prefabricated after the completion again by it is each be segmented into
Row preassembling；
Step 2, gravity type are anti-to push away basic pile foundation and foundation pit construction, and first confrontation pushes away basal perimeter and carries out place hardening, protects
Wall pile foundation, excavation pit, the pre-buried pre-buried plate bracing frame embedded part of main arch arch springing pour bed course, and main arch arch springing is arranged on bed course
Pre-buried plate bracing frame；It pours under base concrete to double arch arch springing embedded board -0.5m；After the completion of concrete curing, arch springing is carried out
Embedded board installation；
Step 3, main arch arch springing support frame are set up, and by built-in fitting and the fixed bracket of stull, setting bracket is positioned on bracket
Steel plate；
Step 4, arch springing construction, correct embedded board, install the connecting bottom board of embedded board and main arch arch springing, and the bullet on bottom plate
Main arch arch springing adds alignment code plate to bit line out；Arch springing first segment is lifted by crane using two-shipper crawler crane, its lower end is made to draw close alignment code plate
And it is aligned edge line with position line, and upper end is slowly fallen on bracket fixing steel plate, after adjusting linear and absolute altitude to setting position,
Arch springing section and positioning plate are welded immediately, 1/3 thickness of backing weld seam, then crawler crane pine hook；Arch springing is lifted using the above method
Another section；After arch springing has lifted, connecting partition is lifted, finally lifting conversion end plate；Arch springing, reinforcing bar, formwork are bound, arch springing is poured
Concrete, vibration compacting are conserved；
Step 5 is set up diclinic arch and is held and encircles body bracket, and before setting up bracket, processing, branch are stablized in the foundation stabilization for carrying out bracket
Corresponding pumping equipment is set around frame basis, the corresponding reinforcing bar of binding in basis, and embedded support frame built-in fitting, basis pours coagulation
Soil simultaneously conserves, and after reaching intensity, sets up support frame standard knot, repetition measurement absolute altitude, sets up support frame and adjusts platform, installs between support frame
Truss frame for connecting；
Step 6, diclinic arch hold arch figure installation, and entire diclinic arch holds arch figure and single machine shoe is respectively adopted in the following sequence
Band lifting, lifts order are as follows: lifting diclinic arch holds first segment arch figure → carry out first segment arch figure concrete of arch figure
Second and third section of arch figure → lifting diclinic arch that perfusion → lifting diclinic arch holds arch figure holds secondary ring beam section → lifting of arch figure
Remaining arch figure → lifting diclinic arch that diclinic arch holds arch figure holds the secondary ring beam round tube of arch figure；
Step 7, diclinic arch hold arch figure and close up, and it is closure segment that it is most intermediate, which to hold arch figure, for diclinic arch, and conjunction is first detected when closing up
Hold together temperature and measure closure segment to interface coordinate, lifting is carried out using single machine crawler crane and is closed up；
Step 8, bracket Deformation Monitoring, measure strutting system verticality and every section of arch figure installation front and back support sedimentation becomes
Shape amount；
Step 9, rope disk are set up, and hold outer placement rope disk in diclinic arch, rope disk part are tied using hanging belt, in Fang Suo
It unclamps, puts in bundle, slowly at the uniform velocity draw；After drag-line expansion, drag-line is managed using guide chain according to the straight graticule on cable body surface
It is suitable, prevent cable body torsion from jumping silk；
Step 10, the construction of rope net laying, first according to the track cable of the three dimensional space coordinate setting-out symmetry axis half of drag-line
It with wind resistance rustling sound head projected position, is then set up in rope head projected position and puts Suo Pingtai, later with crane according to the position of drag-line
Drag-line is hung to by number to be put on Suo Pingtai, is laid in ground for track cable in track cable axis direction using crane and cable tray later
On face, finally using crane and cable tray wind resistance rope axis direction by rope laying secondary outside wind resistance rope and tensioning on the ground；
Step 11 promotes tooling installation, installs the operating platform at drag-line place in place, is welded using cable connecting lug or so
Otic placode as impetus, every drag-line installs the promotion installation that 2 jack that climb carry out drag-lines；
Step 12, rope net promote tensioning, first traction enhancement track cable, when the rope head of track cable reaches ring beam anchor point
It is anchored, then carries out traction, the tensioning of wind resistance rope again, until the tensioning of drag-line whole is completed, then traction enhancement tensioning is outer secondary
Rope；
Diclinic arch is first held bracket absolute altitude column and main arch welds by step 13, support removing before track cable is by tensioning in place
It meets bearing to be cut, all support frames is removed after the completion of the tensioning of rope net, diclinic arch holds hyperbolic paraboloid cable network
Structure is constructed and is completed.
Further, after completing step 13, it also needs to carry out rope net deformation monitoring, the rope net deformation monitoring uses whole station
Instrument and reflecting piece hold in diclinic arch and 23 monitoring points are arranged on Hyperbolic Paraboloid Cable Networks Structures altogether, when actually detected, in each inspection
Reflecting piece is pasted on measuring point, in order to observe positioning and acquisition data.
Further, in step 6, lifting first segment arch figure method are as follows: in a model setting-out go out diclinic arch hold arch
Each five contrapositions coordinate in figure both ends, encircles figure using two-shipper crawler crane lifting first segment, and first segment arch figure is placed on support
Frame is adjusted on platform absolute altitude column, and repetition measurement diclinic arch holds arch five coordinates of figure upper and lower opening, is compared with theoretical value, if any inclined
Difference is adjusted, and after in place, first segment arch figure is welded and fixed with absolute altitude column, welds lower end interface, after stablizing, loop wheel machine pine
Hook.
Further, in step 6, lifting diclinic arch holds second and third section of arch figure and remaining arch figure in arch figure
Method with lifting first segment arch the method for figure it is identical.
Further, in step 7, joining temperature must be between 15 DEG C -25 DEG C.
Further, in step 10, when rope head projected position is set up and puts Suo Pingtai, Suo Pingtai is put using welding steel
Frame, and the welding steel structure is had enough to meet the need to transport and be placed in by crane and puts rope position.
Further, in step 10, rope net laying construct when exhibition Suo Shunxu be followed successively by track cable → wind resistance rope →
The outer secondary rope of tensioning.
Further, in step 10, in rope net laid course, when track cable expansion, the lower half of cord clip is first used
Track cable is clamped together in the middle part of cord clip and cord clip, crane and cable tray is recycled to spread track cable in track cable axis direction
It puts it on the ground；When wind resistance rope laying, wind resistance rope is first carried out by clamping installation using the upper cover plate of cord clip, then utilizes crane
And cable tray wind resistance rope axis direction by wind resistance rope laying on the ground.
Further, in step 12, during drawing secondary rope outside track cable, wind resistance rope and tensioning, the traction of tooling rope
Length and the deviation of theoretical evaluation are less than ± 50mm, and tractive force and theoretical calculation rope force value deviation are less than ± 30%；Initial tensioning
When promotion, pressure is slowly classified increase, is initially pressurised into the 40% of required pressure, later by 60%, 80% and 90% required pressure
Power increases step by step, in the case where all are all stable, is further added by 100%.
Compared with prior art, the invention has the following advantages:
Diclinic of the present invention arch holds the construction methods of Hyperbolic Paraboloid Cable Networks Structures, and design is scientific and reasonable, can standardized construction,
Difficulty of construction can be effectively reduced, construction rhythm is compact, can effectively improve construction efficiency, shortens the construction period.
Detailed description of the invention
Fig. 1 is that diclinic of the present invention arch holds Hyperbolic Paraboloid Cable Networks Structures schematic diagram.
Fig. 2 is strutting system structural schematic diagram of the present invention.
Fig. 3 is support frame embedded part structure schematic diagram of the present invention.
Fig. 4 is the top view of Fig. 3.
Fig. 5 is support frame standard knot structural schematic diagram of the present invention.
Fig. 6 is the section B-B figure of Fig. 5.
Fig. 7 is that support frame of the present invention adjusts platform structure schematic diagram.
Fig. 8 truss frame for connecting structural schematic diagram between support frame of the present invention.
Fig. 9 is main arch arch springing embedded board support frame structure diagram of the present invention.
Figure 10 is the pre-buried plate bracing frame embedded parts structure schematic diagram of main arch arch springing of the present invention.
Figure 11 is supporting structure schematic diagram of the present invention.
Figure 12 is embedded part structure schematic diagram of the present invention.
Figure 13 is track cable structural schematic diagram of the present invention.
Figure 14 is cord clip structural schematic diagram of the present invention.
Figure 15 is arch springing embedded board structural schematic diagram of the present invention.
Figure 16 is arch springing structural schematic diagram of the present invention.
Figure 17 is that arch springing of the present invention and arch figure install view.
Figure 18 is that arch springing of the present invention is installed on connecting bottom board schematic diagram.
Figure 19 is alignment code plate structural schematic diagram of the present invention
Figure 20, which is that gravity type of the present invention is anti-, pushes away basic schematic.
Figure 21 is cable tray schematic diagram of the present invention.
Figure 22 is the outer secondary rope schematic diagram of tensioning of the present invention.
Figure 23 is that the present invention promotes tool structure schematic diagram.
Wherein, the corresponding title of appended drawing reference are as follows:
2- strutting system, 4- diclinic arch hold arch figure, 5- ring beam round tube, 6- cable tray, 7- track cable, 8- wind resistance rope,
The outer secondary rope of 9- tensioning, 10- cord clip, 12- retaining wall pile foundation, 13- foundation pit, the pre-buried plate bracing frame of 14- main arch arch springing, 15- arch springing are pre-
Buried plate, 16- bracket, 17- connecting bottom board, 21- support frame built-in fitting, 22- support frame standard knot, 23- support frame adjust platform,
Between 24- support frame truss frame for connecting, 41- cable connecting lug, 42- otic placode, 43- climb jack, 71- track cable axis direction,
81- wind resistance rope axis direction, 101- lower half cord clip, 102- cord clip middle part, 103- upper cover plate, the support of 141- main arch arch springing embedded board
Frame embedded part, 161- built-in fitting, 162- stull, 171- alignment code plate, 181- arch springing first segment, another section of 182- arch springing, 183- connect
It connects partition, 184- conversion end plate, 231- diclinic arch and holds bracket absolute altitude column.
Specific embodiment
The invention will be further described with embodiment for explanation with reference to the accompanying drawing, and mode of the invention includes but not only limits
In following embodiment.
As shown in Fig. 1-2 3, diclinic arch provided by the invention holds Hyperbolic Paraboloid Cable Networks Structures construction method,.This diclinic arch
Hold Hyperbolic Paraboloid Cable Networks Structures construction method the following steps are included:
Step 1, diclinic arch hold processing, diclinic arch hold be segmented in factory it is prefabricated, be segmented it is prefabricated after the completion again by it is each be segmented into
Row preassembling.
Step 2, gravity type are anti-to push away basic pile foundation and foundation pit construction, and first confrontation pushes away basal perimeter and carries out place hardening, protects
Wall pile foundation 12, excavation pit 13, the pre-buried pre-buried plate bracing frame embedded part 141 of main arch arch springing pour bed course, and master is arranged on bed course
Encircle the pre-buried plate bracing frame 14 of arch springing；It pours under base concrete to double arch arch springing embedded board -0.5m；After the completion of concrete curing,
Arch springing embedded board 15 is carried out to install.
Step 3, main arch arch springing support frame are set up, and by built-in fitting 161 and the fixed bracket 16 of stull 162, are arranged on bracket
Bracket fixing steel plate.
Step 4, arch springing construction, correct embedded board 15, install the connecting bottom board 17 of embedded board and main arch arch springing, and in bottom plate
Upper pop-up main arch arch springing adds alignment code plate 171 to bit line；Arch springing first segment 181 is lifted by crane using two-shipper crawler crane, leans on its lower end
Hold together alignment code plate 171 and be aligned edge line with position line, upper end is slowly fallen on bracket fixing steel plate, adjusts linear and absolute altitude
To setting position, arch springing section and positioning plate are welded immediately, 1/3 thickness of backing weld seam, then crawler crane pine hook；Using above-mentioned
Method lifts another section 182 of arch springing；After arch springing has lifted, connecting partition 183 is lifted, finally lifting conversion end plate 184；Binding arch
Foot, reinforcing bar, formwork, pour arch springing concrete, and vibration compacting is conserved.
Step 5 is set up diclinic arch and is held and encircles body bracket, and before setting up bracket, processing, branch are stablized in the foundation stabilization for carrying out bracket
Corresponding pumping equipment is set around frame basis, the corresponding reinforcing bar of binding in basis, and embedded support frame built-in fitting 21, basis pours mixed
Solidifying soil simultaneously conserves, and after reaching intensity, sets up support frame standard knot 22, repetition measurement absolute altitude sets up support frame and adjusts platform 23, installation branch
Truss frame for connecting 24 between support.
Step 6, diclinic arch hold arch figure 4 and install, and entire diclinic arch holds arch figure and single machine is respectively adopted in the following sequence
Crawler crane lifting, lifts order are as follows: lifting diclinic arch holds first segment arch figure → carry out first segment arch figure coagulation of arch figure
Second and third section of arch figure → the secondary ring beam section that lifting diclinic arch holds arch figure → that native perfusion → lifting diclinic arch holds arch figure is hung
Remaining arch figure → lifting diclinic arch that dress diclinic arch holds arch figure holds the secondary ring beam round tube 5 of arch figure.It lifts first segment and encircles body
Section method are as follows: in a model setting-out go out diclinic arch hold arch each five contrapositions coordinate in figure both ends, using two-shipper crawler crane lifting
First segment encircles figure, and first segment arch figure is placed on support frame and is adjusted on platform absolute altitude column 231, repetition measurement diclinic arch is held on arch figure
Five coordinates of lower mouth, compare with theoretical value, if any deviation, are adjusted, after in place, by first segment arch figure and absolute altitude column
231 are welded and fixed, and weld lower end interface, after stablizing, loop wheel machine pine hook.Lifting diclinic arch holds second and third section of arch body in arch figure
Section and the method for remaining arch figure are identical as the lifting first segment arch method of figure.
Step 7, diclinic arch hold arch figure and close up, and it is closure segment that it is most intermediate, which to hold arch figure, for diclinic arch, and conjunction is first detected when closing up
Hold together temperature and measure closure segment to interface coordinate, lifting is carried out using single machine crawler crane and is closed up, joining temperature must be at 15 DEG C -25
Between DEG C.
Step 8, bracket Deformation Monitoring measure 2 verticality of strutting system and every section of arch figure installation front and back support sedimentation
Deflection.
Step 9, rope disk 6 are set up, and hold outer placement rope disk 6 in diclinic arch, rope disk part are tied using hanging belt, while putting rope
Side is unclamped, and is put in bundle, is slowly at the uniform velocity drawn；After drag-line expansion, use guide chain by drag-line according to the straight graticule on cable body surface
It makes in order, prevents cable body torsion from jumping silk.
Step 10, the construction of rope net laying, first according to the track cable of the three dimensional space coordinate setting-out symmetry axis half of drag-line
It with wind resistance rustling sound head projected position, is then set up in rope head projected position and puts Suo Pingtai, later with crane according to the position of drag-line
Drag-line is hung to and puts on Suo Pingtai by number, later using crane and cable tray 6 in track cable axis direction 71 by 7 laying of track cable
On the ground, finally rope 9 secondary outside wind resistance rope 8 and tensioning is laid in ground in wind resistance rope axis direction 81 using crane and cable tray
On face.When rope head projected position is set up and puts Suo Pingtai, Suo Pingtai is put using welding steel structure, and the welding steel structure passes through crane
Turnover, which is transported and is placed in, puts rope position.Rope net laying construction when exhibition Suo Shunxu be followed successively by 7 → wind resistance of track cable rope 8 →
Draw outer secondary rope 9.In rope net laid course, when track cable 7 is unfolded, first using in the lower half cord clip 101 and cord clip of cord clip 10
Track cable 7 is clamped together by portion 102, and crane and cable tray 6 is recycled to be laid in track cable 7 in track cable axis direction 71
On ground；When wind resistance rope laying, wind resistance rope 8 is first carried out by clamping installation using the upper cover plate 103 of cord clip 10, then using hanging
Vehicle and cable tray wind resistance rope axis direction 81 by 8 laying of wind resistance rope on the ground.
Step 11 promotes tooling installation, installs the operating platform at drag-line place in place, is welded using cable connecting lug 41 or so
The otic placode 42 connect is used as impetus, and every drag-line installs the promotion installation that 2 jack 43 that climb carry out drag-line.
Step 12, rope net promote tensioning, first traction enhancement track cable 7, reach ring beam anchor point in the rope head of track cable 7
Shi Jinhang anchoring, then carries out traction, the tensioning of wind resistance rope 8 again, until the tensioning of drag-line whole is completed, then outside traction enhancement tensioning
Secondary rope 9.During drawing secondary rope 9 outside track cable 7, wind resistance rope 8 and tensioning, the deviation of tooling rope drawing length and theoretical evaluation
Less than ± 50mm, tractive force and theoretical calculation rope force value deviation are less than ± 30%；When initial tensioning is promoted, pressure is slowly classified increasing
Add, be initially pressurised into the 40% of required pressure, increases step by step by pressure needed for 60%, 80% and 90% later, it is all steady at all
In the case where fixed, it is further added by 100%.
Diclinic arch is first held bracket absolute altitude column 231 and master before track cable 7 is by tensioning in place by step 13, support removing
The arch place of being welded and fixed is cut, and is removed after the completion of the tensioning of rope net to all support frames, and diclinic arch holds hyperbolic-parabolic
Cable net structure is constructed and is completed.After completing step 13, it also needs to carry out rope net deformation monitoring, the rope net deformation monitoring is using complete
It stands instrument and reflecting piece, is held in diclinic arch and 23 monitoring points are set altogether on Hyperbolic Paraboloid Cable Networks Structures, when actually detected, each
Reflecting piece is pasted on test point, in order to observe positioning and acquisition data.
Diclinic of the present invention arch holds the construction methods of Hyperbolic Paraboloid Cable Networks Structures, and design is scientific and reasonable, can standardized construction,
Difficulty of construction can be effectively reduced, construction rhythm is compact, can effectively improve construction efficiency, shortens the construction period.
Above-described embodiment is only one of the preferred embodiment of the present invention, should not be taken to limit protection model of the invention
It encloses, as long as that in body design thought of the invention and mentally makes has no the change of essential meaning or polishing, is solved
The technical issues of it is still consistent with the present invention, should all be included within protection scope of the present invention.
Claims (9)
1. diclinic arch holds Hyperbolic Paraboloid Cable Networks Structures construction method, which comprises the following steps:
Step 1, diclinic arch hold processing, diclinic arch hold be segmented in factory it is prefabricated, be segmented it is prefabricated after the completion of each segmentation is carried out in advance again
It is assembled；
Step 2, gravity type are anti-to push away basic pile foundation and foundation pit construction, and first confrontation pushes away basal perimeter and carries out place hardening, does lagging pile
Basis, excavation pit, the pre-buried pre-buried plate bracing frame embedded part of main arch arch springing pour bed course, and it is pre-buried that main arch arch springing is arranged on bed course
Plate bracing frame；It pours under base concrete to double arch arch springing embedded board -0.5m；After the completion of concrete curing, it is pre-buried to carry out arch springing
Plate installation；
Step 3, main arch arch springing support frame are set up, and by built-in fitting and the fixed bracket of stull, bracket fixing steel plate is arranged on bracket；
Step 4, arch springing construction, correct embedded board, install the connecting bottom board of embedded board and main arch arch springing, and pop up master on bottom plate
Encircle arch springing to bit line, adds alignment code plate；Arch springing first segment is lifted by crane using two-shipper crawler crane, so that its lower end is drawn close alignment code plate and makes
Edge line is aligned with position line, and upper end is slowly fallen on bracket fixing steel plate, after adjusting linear and absolute altitude to setting position, immediately
Arch springing section and positioning plate are welded, 1/3 thickness of backing weld seam, then crawler crane pine hook；It is another using above method lifting arch springing
Section；After arch springing has lifted, connecting partition is lifted, finally lifting conversion end plate；Arch springing, reinforcing bar, formwork are bound, arch springing coagulation is poured
Soil, vibration compacting are conserved；
Step 5 is set up diclinic arch and is held and encircles body bracket, and before setting up bracket, processing, bracket base are stablized in the foundation stabilization for carrying out bracket
Corresponding pumping equipment is set around plinth, the corresponding reinforcing bar of binding in basis, and embedded support frame built-in fitting, basic casting concrete is simultaneously
Maintenance after reaching intensity, sets up support frame standard knot, and repetition measurement absolute altitude sets up support frame and adjusts platform, connects between installation support frame
Truss；
Step 6, diclinic arch hold arch figure installation, and entire diclinic arch holds arch figure and single machine crawler crane is respectively adopted in the following sequence
Lifting lifts order are as follows: lifting diclinic arch holds first segment arch figure → carry out first segment arch figure filling concrete of arch figure
Second and third section of arch figure → lifting diclinic arch that → lifting diclinic arch holds arch figure holds secondary ring beam section → lifting diclinic of arch figure
Remaining arch figure → lifting diclinic arch that arch holds arch figure holds the secondary ring beam round tube of arch figure；
Step 7, diclinic arch hold arch figure and close up, and it is closure segment that it is most intermediate, which to hold arch figure, for diclinic arch, and first temperature is closed up in detection when closing up
It spends and measures closure segment to interface coordinate, lifting is carried out using single machine crawler crane and is closed up；
Step 8, bracket Deformation Monitoring measure strutting system verticality and every section of arch figure installation front and back support sedimentation and deformation
Amount；
Step 9, rope disk are set up, and hold outer placement rope disk in diclinic arch, rope disk part are tied using hanging belt, Bian Fang Suo Biansong
It opens, puts in bundle, slowly at the uniform velocity draw；After drag-line expansion, drag-line is made in order using guide chain according to the straight graticule on cable body surface,
Prevent cable body torsion from jumping silk；
Step 10, the construction of rope net laying, first according to the track cable of the three dimensional space coordinate setting-out symmetry axis half of drag-line and anti-
Wind rustling sound head projected position, then sets up in rope head projected position and puts Suo Pingtai, later with crane according to the Position Number of drag-line
Drag-line is hung to and is put on Suo Pingtai, track cable is laid in ground in track cable axis direction using crane and cable tray later
On, finally using crane and cable tray wind resistance rope axis direction by rope laying secondary outside wind resistance rope and tensioning on the ground；
Step 11 promotes tooling installation, installs the operating platform at drag-line place in place, the ear welded using cable connecting lug or so
For plate as impetus, every drag-line installs the promotion installation that 2 jack that climb carry out drag-line；
Step 12, rope net promote tensioning, first traction enhancement track cable, carry out when the rope head of track cable reaches ring beam anchor point
Anchoring, then carries out traction, the tensioning of wind resistance rope again, until the tensioning of drag-line whole is completed, then the outer secondary rope of traction enhancement tensioning；
Diclinic arch is first held bracket absolute altitude column and main arch welds admittedly by step 13, support removing before track cable is by tensioning in place
Determine place to be cut, all support frames are removed after the completion of the tensioning of rope net, diclinic arch holds Hyperbolic Paraboloid Cable Networks Structures
I.e. construction is completed.
2. diclinic arch according to claim 1 holds Hyperbolic Paraboloid Cable Networks Structures construction method, which is characterized in that in step
It after the completion of 13, also needs to carry out rope net deformation monitoring, the rope net deformation monitoring uses total station and reflecting piece, holds in diclinic arch double
23 monitoring points are set altogether on bent paraboloid cable net structure, when actually detected, paste reflecting piece on each test point, in order to
Observation positioning and acquisition data.
3. diclinic arch according to claim 2 holds Hyperbolic Paraboloid Cable Networks Structures construction method, which is characterized in that in step
In 6, lifting first segment arch figure method are as follows: in a model setting-out go out diclinic arch hold arch each five contrapositions coordinate in figure both ends,
Figure is encircleed using two-shipper crawler crane lifting first segment, first segment arch figure is placed on support frame and is adjusted on platform absolute altitude column, repetition measurement
Diclinic arch holds arch five coordinates of figure upper and lower opening, compares with theoretical value, if any deviation, is adjusted, after in place, by first
Section arch figure is welded and fixed with absolute altitude column, welds lower end interface, after stablizing, loop wheel machine pine hook.
4. diclinic arch according to claim 3 holds Hyperbolic Paraboloid Cable Networks Structures construction method, which is characterized in that in step
In 6, lifting diclinic arch holds the method and lifting first segment arch figure of second and third section of arch figure and remaining arch figure in arch figure
Method it is identical.
5. diclinic arch according to claim 4 holds Hyperbolic Paraboloid Cable Networks Structures construction method, which is characterized in that in step
In 7, joining temperature must be between 15 DEG C -25 DEG C.
6. diclinic arch according to claim 5 holds Hyperbolic Paraboloid Cable Networks Structures construction method, which is characterized in that in step
In 10, when rope head projected position is set up and puts Suo Pingtai, Suo Pingtai is put using welding steel structure, and the welding steel structure passes through crane
Turnover, which is transported and is placed in, puts rope position.
7. diclinic arch according to claim 6 holds Hyperbolic Paraboloid Cable Networks Structures construction method, which is characterized in that in step
In 10, the exhibition Suo Shunxu in the construction of rope net laying is followed successively by outside track cable → wind resistance rope → tensioning secondary rope.
8. diclinic arch according to claim 7 holds Hyperbolic Paraboloid Cable Networks Structures construction method, which is characterized in that in step
In 10, in rope net laid course, when track cable expansion, first use load-bearing cord clip in the middle part of the lower half cord clip and cord clip of cord clip
Hold together, recycle crane and cable tray track cable axis direction by track cable laying on the ground；When wind resistance rope laying
When, wind resistance rope is first carried out by clamping installation using the upper cover plate of cord clip, then using crane and cable tray in wind resistance rope axis side
To by wind resistance rope laying on the ground.
9. diclinic arch according to claim 8 holds Hyperbolic Paraboloid Cable Networks Structures construction method, which is characterized in that in step
In 12, during drawing secondary rope outside track cable, wind resistance rope and tensioning, the deviation of tooling rope drawing length and theoretical evaluation is less than
± 50mm, tractive force and theoretical calculation rope force value deviation are less than ± 30%；When initial tensioning is promoted, pressure is slowly classified increase,
It is initially pressurised into the 40% of required pressure, is increased step by step by pressure needed for 60%, 80% and 90% later, it is all stable at all
In the case of, it is further added by 100%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910077871.6A CN109812022B (en) | 2019-01-28 | 2019-01-28 | Construction method of cable net structure with double oblique arches and double parabolic surfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910077871.6A CN109812022B (en) | 2019-01-28 | 2019-01-28 | Construction method of cable net structure with double oblique arches and double parabolic surfaces |
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| CN110552428A (en) * | 2019-08-12 | 2019-12-10 | 浙江大学 | Spiral stretch-draw overall structure |
| CN115726582A (en) * | 2022-11-29 | 2023-03-03 | 中建三局集团有限公司 | Construction method for integrally lifting large-span vehicle-amplitude single-double-layer mixed cable net |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552428A (en) * | 2019-08-12 | 2019-12-10 | 浙江大学 | Spiral stretch-draw overall structure |
| CN115726582A (en) * | 2022-11-29 | 2023-03-03 | 中建三局集团有限公司 | Construction method for integrally lifting large-span vehicle-amplitude single-double-layer mixed cable net |
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| CN109812022B (en) | 2021-04-09 |
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