CN100366855C - Inclined triangular pyramid truss type frame construction and method for making, mounting and measuring the same - Google Patents
Inclined triangular pyramid truss type frame construction and method for making, mounting and measuring the same Download PDFInfo
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- CN100366855C CN100366855C CNB200410009458XA CN200410009458A CN100366855C CN 100366855 C CN100366855 C CN 100366855C CN B200410009458X A CNB200410009458X A CN B200410009458XA CN 200410009458 A CN200410009458 A CN 200410009458A CN 100366855 C CN100366855 C CN 100366855C
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Abstract
The present invention discloses an inclined triangular pyramid trussed beam frame structure and a manufacturing, installing and measuring method thereof. The frame structure comprises a triangular pyramid frustum part and a triangular pyramid top part, wherein three ridges of the frustum part are trussed beam columns formed by that a plurality of grid columns are connected through flanges; column feet of the trussed beam columns are fixed on a base station used as a bottom surface of a triangular pyramid; one trussed beam column is a compressed column and has an included angle of more than 90 DEG and less than 110 DEG with the bottom surface, and the other two trussed beam columns are tension columns and have an included angle of more than 50 DEG and less than 65 DEG with the bottom surface. The frustum part also comprises a plurality of trussed beams formed by welding grid units; the trussed beams are connected through flanges between the trussed beam columns by being divided into a plurality of parallel layers in a parallel method with the bottom surface. The grid column units are formed by welding a plurality of steel pipes and flanges and connected through the flanges; the top part is an integral structure welded by steel pipes; three ridges of the top part of the triangular pyramid are steel pipes welded and extending along the trussed beam columns of the triangular pyramid frustum part.
Description
Technical field
The invention belongs to the tower mast structure engineering-built technology in the civil construction project field, be particularly related to a kind of inclination triangular conical steel pipe space truss formula frame construction leaning tower and construction method thereof, structure types is a spatial steel structure, is specially space truss formula frame construction.
Background technology
The tall and slender structure of home and abroad mainly contains TV transmission tower, radio tower, microwave transmission tower, power transmission line column, tourism, sightseeing, memorial tower, mainly is divided into steel work and reinforced concrete structure (comprising prestressed reinforced concrete construction).Wherein steel work has following advantage: steel strength height, plasticity and good toughness, have somatotropism energy such as even matter, can weld can assemble, resistance to overturning is good, overall weight is light etc.The home and abroad adopts the high tower building overview of " steel work " to see the following form.
| Function of use | Facade form | Represent engineering | Main building technology | The construction time |
| TV transmission tower | The straight tower of linear | U.S. Milwaukee TV transmission tower 329.00m | The combining structure of major diameter round steel and angle steel, steel using amount 750t, | 1962 |
| The straight tower of broken line shape | Shanghai TV transmission tower 210.55m | Welding node, ground crouch and piece together integral erection | 1973 | |
| Shantou TV transmission tower 212.00m | The hexagon steel tubular structure is established the pretension rods, steel using amount 700t, | 1989 | ||
| Broadcasting television tower, Shijiazhuang 280.00m | Bolt connects, the steel pipe combining structure, | 1997 | ||
| Tokyo TV transmission tower 333.00m | Quadrangle angle steel combining structure, riveted joint connects; Steel using amount 3600t, | 1958 | ||
| St. Petersburg, Russia TV transmission tower 315.00m | Hexagon lattice formula steel tubular structure, steel using amount 1160t, | 1962 | ||
| Ukraine Kiev TV transmission tower 380.00m, the highest steel structure tower in the world | The steel pipe space truss structure that is welded to connect, steel using amount 2800t, | 1973 | ||
| Armenia Yerevan TV transmission tower 312.00m | The triangle space truss structure is established combined type brace and cross bar, steel using amount 1758t, | 1977 |
| Radio tower | The straight tower of linear | Beijing radio tower 81.00m | Bolt connecting angle rod member trussed construction, | |
| The towline mast | Warsaw, POL long wave mast 645.28m | Positive triangle steel tubular structure, 3 directions, totally five road towlines from top to bottom | ||
| Microwave transmission tower | Two sections straight towers of linear | The NEC of Nippon Electric Company, Ltd. microwave transmission tower 92.00m | Bolt connecting angle rod member trussed construction | |
| Power transmission line column | The straight tower of linear | Guangzhou 500kV circuit straight line crossover tower 235.75m | The combining structure that bolt connecting angle rod member constitutes, steel using amount 1040t | 1987 |
| The straight tower of linear | Nanjing 220kV self-supporting steel pipe power transmission tower 193.50m | Flange plate bolt connects, steel pipe | 1976 | |
| Tourism, sightseeing, memorial tower | The straight tower of broken line shape | Eiffel tower 320.80m | Quadrangle riveted joint shaped steel member structure unit, in bulk; Steel using amount 8500t, | 1889 |
| The straight tower of space broken line shape | Japanese water family Yi Shu Guan sightseeing tower 100.00m | Steel pipe is welded to connect, prefabricated unit, assembled on site welding, space truss structure; The outer thick titanium alloy sheet of 3.2mm of decorating | 1989 | |
| The straight tower of linear | Chiba, Japan port lookout tower 125.00m | Rhombus plane, hexagon cylindrical shell, welded steel pipe space frame structure; Outer ornamental glass curtain wall | 1986 |
Connection between the steel work rod member mainly contains: riveted joint, welding, bolt connection etc., and nearest 20 years head tower all adopts method in bulk, and flange plate bolt connects.As seen the king starts people's " China's steel TV tower structures design and construction overview ".
The straight line of prior art or the straight tower of broken line shape, because have stability from seeing in appearance, the sensation of the urgent and shock of not tilting to be produced, and build leaning tower certain technical difficulty is arranged, its basis, each unit segmental machining of main body and installation have complicated Deformation control measure, need carry out accurate factory process location and the aerial location of on-the-spot installation, and prior art also to building leaning tower a kind of mature technique scheme is not proposed.
Summary of the invention
Technical problem to be solved by this invention provides a kind of inclination triangular taper truss frame structure and making thereof, installation, measuring method, solves prior art and does not also propose a kind of problem of mature technique scheme to building leaning tower.
For achieving the above object, the invention provides a kind of inclination triangular taper truss frame structure, its characteristics are, include triangular pyramid frustum portion and triangular pyramid top tip part; The truss leg of three crest lines of described triangular pyramid frustum portion for being formed by connecting by flange by a plurality of lattice columns unit, the suspension column of described three truss legs is fixed on the base station as described triangular pyramid bottom surface, truss leg be the pressurized truss leg and with the angle of described triangular pyramid bottom surface greater than 90 ° and less than 110 °, other two truss legs be the tension truss leg and with the angle of described bottom surface greater than 50 ° and less than 65 °; Described triangular pyramid frustum portion also comprises a plurality of girder trusses that formed by the lattice element solder, divides a plurality of parallel layers to connect by flange between described truss leg by the mode parallel with described triangular pyramid bottom surface; Described lattice column unit is welded by many steel pipes and flange, and described lattice column connects by flange between the unit; Described triangular pyramid top tip part is the integrative-structure by steel pipe welding, and three crest lines of described triangular pyramid top tip part be the steel pipe along the truss leg welding extension of described triangular pyramid frustum portion.
Above-mentioned frame construction, its characteristics are, every 2 or 3 described parallel layers an enhancement Layer are set, and also are provided with diagonal brace between described parallel layers.
Above-mentioned frame construction, its characteristics be, is coated with stone curtain wall at the external surface of described triangular pyramid frustum portion, is coated with curtain wall at the external surface of described triangular pyramid top tip part.
Above-mentioned frame construction, its characteristics are that the angle of described pressurized truss leg and described triangular pyramid bottom surface is 99.68 °, and the angle of described two tension truss legs and described triangular pyramid bottom surface is 64.69 °.
Above-mentioned frame construction, its characteristics are that the suspension column that the suspension column of described three truss legs forms with described pressurized truss leg is the isosceles triangle on summit, and drift angle is 50 °.
Above-mentioned frame construction, its characteristics are that the base of described isosceles triangle is 25.2 meters, and height is 27 meters, and the spacing of described parallel layers is 12 meters, and described triangular pyramid frustum portion is high 73 meters.
In order better to realize purpose of the present invention, the present invention also provides a kind of making, mounting method of said frame structure, its characteristics are, comprise the steps: step 1, welding production is used to assemble the lattice column unit of truss leg and girder truss, the triangular pyramid top tip part that welding production is made up of steel tubular structure; Step 2 is built the base station as described triangular pyramid bottom surface; Step 3 lifts described lattice column unit, is welded to form described truss leg and girder truss on described base station, forms described triangular pyramid frustum portion; Step 4, with the top of described triangular pyramid top tip part lifting to described frustum portion, three crest lines that make described triangular pyramid top tip part extend alignment along three truss legs of described triangular pyramid frustum portion.
Above-mentioned method, its characteristics are, described step 3 further comprises: step 31, carrying out suspension column measures, the first segment pressurized truss leg of the composition described pressurized truss leg of lifting between the suspension column and first parallel layers, two first segment tension truss legs of described two tension truss legs are formed in lifting; Lifting is positioned at described first parallel layers and connects three first floor girder trusses of described three truss legs respectively; Step 32, the lifting second joint pressurized truss leg and two second joint tension truss legs between first parallel layers and second parallel layers; Lifting is positioned at described second parallel layers and connects three second layer girder trusses of described three truss legs respectively; Step 33 is installed the face beam between first and second layer girder truss; Step 34, the truss leg and the girder truss of the last layer of installation existing layer; Step 35 is installed the girder truss of described last layer and the face beam between the described existing layer girder truss; Step 36, repeating step 34,35 is up to the described triangular pyramid frustum of composition portion.
In order better to realize purpose of the present invention, the present invention also provides a kind of making of said frame structure, measuring method of mounting method of being used for, its characteristics are, comprise the steps: step 91, when truss leg that each layer is installed and girder truss, the mid point that selects a girder truss adopts the suspention steel ruler to transmit elevation as reference point, measures the absolute altitude of described reference point; Step 92 is measured the site error of the truss leg and the girder truss of each layer, and is adjusted; Step 93, measure the bulk deformation of described frame construction, at the selected Chosen Point of described triangular pyramid top tip part, 2 on plane, place, described triangular pyramid bottom surface are set up transit, and guarantee that described transit can observe described Chosen Point when described frame construction deforms, repeatedly observe afterwards, the record of each observation is compared, calculate the deformation result of described frame construction.
Above-mentioned measuring method, its characteristics are that the adjustment in the described step 92 comprises: to surpassing the truss leg of the vertical direction limit of error, draw round about with hoist engine, after meeting the requirements, the gap that produces between the flange with truss leg pads with lock washer.
Technique effect of the present invention is:
(1) uses leaning tower spatial steel structure triangular taper giant steel tube trussed construction cell cube processing and fabricating technology,, solved the processing and fabricating difficult problem of spatial steel structure by adopting advanced space orientation, processing and welding procedure;
(2) at engineering characteristic, technical barriers such as accurately locate in the space of having researched and solved the spatial steel structure leaning tower, high-altitude segmented combined hanging.
(3) adopt leaning tower steel column pin inclination cast-in fixing bolt technology.By processing mold, the control of employing total powerstation, solved the quality control difficult problem of inclination cast-in fixing bolt.
In sum: formed tight " space truss formula frame structure system " by the orderly truss frame member of complexity (purlin Vierendeel girder, purlin frame column, strut, link bar etc.), had enough intensity, stability and durability, this inclination steel work can satisfy and bears service load (mainly being horizontal wind load), and the safe class of structure has reached " secondary " of code requirement.
Description of drawings
Fig. 1 is the elevational schematic view of frame construction of the present invention;
Fig. 2 is the upright tire flat upper surface arrangement diagram of the preceding setting-out of moulding tire assembling of lattice column of the present invention unit;
Fig. 3 is the upright tire frock sketch of the setting-out of lattice column of the present invention unit;
The back traverse control net schematic diagram of Fig. 4 for laying around the fabricating yard of frame construction of the present invention;
The schematic diagram that Fig. 5 calculates for the height measurement of the present invention in installation process;
Fig. 6 is the deformation measurement schematic diagram of the present invention after installing.
The specific embodiment
With reference to figure 1, be the elevational schematic view of inclination triangular conical steel pipe space truss formula frame construction of the present invention, frame construction of the present invention is a sign tower, the sign tower is a welded steel pipe space truss formula frame construction, is the inclination triangular pyramid shape.73m is following to be made of three oblique lattice columns, and 73m is above to adopt 3 steel pipes to constitute, and laterally cooperates steel pipe crossbeam and brace to connect into integral body, and 73m is following to be provided with the reinforcement girder truss every 12m, and at interlayer diagonal brace is set.
The bottom horizontal section of sign tower is that the outline of triangular pyramid bottom surface is that drift angle is 50 ° a isosceles triangle, the suspension column of three of frame construction of the present invention truss legs formation just is the isosceles triangle on summit with the suspension column of pressurized truss leg, the base of isosceles triangle is 25.2 meters, and height is 27 meters.The angle of three truss legs in the triangular pyramid bottom surface is 99.68 °, and the angle of two tension truss legs and described triangular pyramid bottom surface is 64.69 °
Steel work leaning tower basic building block is steel pipe and flange, is combined into space truss beam, space truss post, is plane frame between the girder truss, and girder truss and truss leg segmentation are integrally welded, connect by flange.
One, frame construction main technique of the present invention is as follows:
Agent structure steel pipe caliber all welds with the Q345E roll of steel plate greater than ф 400; Caliber adopts the Q345C seamless steel pipes less than ф 400 and greater than ф 180, caliber less than and equal ф and adopt the Q235C seamless steel pipe.All sheet materials and the bolt relevant with the flange node are all used the Q345C steel.
Shaped steel, gusset plate, steel plate all adopt Q235B in all the other towers except that the flange node.
Caliber adopts 3000t hydraulic press pipe crimping greater than ф 400, the hard-cover machine finishing of 3000t.Adopt double groove Lincoln weld welding, weld seam adopts ultrasonic testing/ ultrasonic examination.King-post mobile jib and truss mobile jib adopt flame-cutting to carry out blanking, the blank size allowable variation: the long 0-3mm of wide+1mm.
Finished edge: beat groove with semi-automatic gas cutting, groove face requires smooth, and descaling polishes the truncation position.Pre-bending: with the die for fisrt forming pre-bending that is complementary, φ 600 specifications adopt 650 die for fisrt forming, and φ 450 specifications adopt 500 die for fisrt forming, and transition block is installed at two ends, avoids local impression.Bending: adopt the 3000t forcing press, in the bending process depth amount of computerizeing control, bending is not more than opening diameter to a deviation, should be controlled in the 20mm scope.Joint close: thickness of slab is that 16,20,24 pipe all adopts automatic joint close frame joint close, thickness of slab 28 carry out joint close with the 3000t finishing machine, ovality, unfitness of butt joint, joint close gap, torsion resistance all are the indexs that the joint close section must be controlled.Finishing: select for use 600,450 die finish that the caliber of Ф 600, Ф 450 is carried out finishing, ovality deviation-1～2, length is whole once every 0.5m, rotating 45 ° then puts in order once again, so circulate the straightness accuracy Deviation Control in the 3mm scope, need before the finishing weld reinforcement to be polished the dark transition of related pressure when avoiding reinforcement partly to depress.The localized heat alignment: observe the bending situation (convex or concave) of body, select aligning method at situation about occurring: three kinds of methods that flame method, Mechanical Method, Mechanical Method and flame method combine solve.
Tire is found in setting-out: sign tower cell cube member is a space structures, and the setting-out precision need take effective measures and control.The node intersection of purlin Vierendeel girder, post is 9 roads the most nearly, are responsible for maximum gauge 600mm, thickest 28mm.Before setting-out, adopt AutoCAD to set up the threedimensional model of leaning tower and each trussmember thereof, then according to detail drawing paper, on the setting-out platform, trussmember is carried out setting-out in kind in 1: 1.As shown in Figure 2, be the upright tire flat upper surface arrangement diagram of setting-out before the assembling of moulding tire.Wherein, 1 for regulating the dihedral support, and 2 is big tire center line, and 3 is the big tire metope of hydraulic pressure habitual abortion, and 4 is reference line.Determine the position of flange hole or plate according to the horizontal direction in operation card and component diagram mark, identify the position that regulates the dihedral, utilize on the circle tire original dowel hole to locate simultaneously according to the angle of habitual abortion.Each tire support that stands after reinforcing welding, must carry out reinforcement measure, collision deformation in the prevention assembling process with clout; Must carry out the scene handing-over with the station manipulation personnel in the qualified back of the section of carrying out inspection after having found tire.
Tire is found in the overall package setting-out, and Fig. 3 is the upright tire frock sketch of setting-out: wherein, 5 for supporting, and 6 is mobile jib, and 7 is support.Determine each projected position of bar node crosswise; After treating that sample has all been put, will found tire and transfer to suitably upright fetal position and avoid node pipe position, and not influence sash weight and use with keeping flat the tire plate.Check after plate hung in and dodge the seam situation under the plate that require to fit well, seamless with ground, and it is fastening to carry out ground with expansion bolt, and draws the domain welded together with cemented platform.The support that assembles is put into the set-point place that sets in advance, utilizes the horizontal centering of level gauge, reinforce welding.The setting-out back that finishes is carried out sample, proof according to each nodal plane position and is carried out next step operation after qualified.After tire finished,, determine the position in nodal method breast board or hole according to the sign of operation card or component diagram.
The two ends flange process for assembling and welding of lattice column unit is as follows:
Assembled length permission ± 2mm is assembled in the flange assembling of mobile jib two ends with big hydraulic pressure habitual abortion.Automatic submerged-arc welding machine (MZ-1-1000), tilting rack frock are used in two ends flange welding.
Node pipe assembling welding sequence: assemble mobile jib two ends flange → welding two ends flange → assembling two ends flange disk track plate → welding two ends two end flanges footpath plate → assembling mobile jib node pipe, connecting plate → welding node pipe and connecting plate earlier.Before the assembling of mobile jib node, earlier node assembling welding is finished.
Pylon assembling: first setting-out, upright tire.Tower body divides three groups of mold assemblings, three groups of molds of truss, and totally 6 cover molds are operated simultaneously, amplify sample according to the figure paper size on platform.On iron plate, the tire plate is assembled, during the assembling tyre plate, accomplish fluently level with level gauge.After the tire plate is upright good, mobile jib is hung on the tire plate, fastening good two ends flange is aligned in cross bar than on the son more simultaneously, allows electric welder's stem member point fix again after accurate.
Designing requirement pipe-pipe tubular joint is first-order weld, and because the tubular structure material is that Q345 steel and steel pipe walls are thicker, brings great difficulty to welding.The butt welding of the every steel pipe of designing requirement, steel plate, the inner and outer ring weld seam of steel pipe flange all requires first-order weld, and 100% outward appearance detects, 100% ultrasonic testing/ ultrasonic examination.And a large amount of large-diameter steel pipes intersection weld seam, a part of node should perform the anti-deformation measure for repeatedly passing through the weld seam very dense mutually.Carry out the harmless inspection check (ultrasonic testing/ ultrasonic examination, magnetic powder inspection) of weld seam in strict accordance with construction steel structure welding code JGJ 81-91.Underproof weld seam is reprocessed, still will be after reprocessing by detecting.
Two, the mounting technique of leaning tower space truss formula framework steel work is as follows:
The sign tower structure is the welded steel pipe spatial steel structure, three face tilts of main body, and compression column tilts 9.680, is subjected to stay column to tilt 25.310.Flange is adopted in the connection of steel structure member.
1) constructure scheme is determined
The leaning tower steel structure member is heavy, tens tons, more than 20 ton of single member, and for guaranteeing the subsequent handling construction, attached room structure must be constructed, and the crane radius of clean-up strengthens.Adopt crane lifting through taking all factors into consideration decision.
2) technological process and method of operating
Construction technology process: suspension column measurement → lifting first segment compression column → lifting first segment be subjected to stay column → lifting first segment north and south crossbeam → lifting first segment east side crossbeam → lifting second joint compression column → lifting second joint to be subjected to stay column → lifting second joint north and south crossbeam → lifting second to save east side crossbeam → installation first and second saves face beam between crossbeam → install one deck post, beam → install an aspect beam → by that analogy → lift pinnacle of a pagoda.
The crossbeam 51.997m on north is following to be finished by the 80t crane, in the east, beam and above being finished by the 150t crawler crane of north 51.997m in the south.The lifting of 73.000 meters～tower section below 85.000 meters of absolute altitude bulk-breaking.The above tower body integral hoisting of 85m.All devices such as curtain wall and lightning-arrest, aeronautical light and flood lighting must assemble integral hoisting on ground.Adopt the 300t crane lifting, the 150t crawler crane cooperates decoupling device.
High-strength bolt is installed: high-strength bolt auxiliary connection torque check should be finished in the 48h after executing stubborn 1h.
The method of inspection:, nut is return about 60 degree the torque value when being back to the origin-location in spiral shell tail end head and the line of nut relative position with torque wrench mensuration is stubborn.This torque value with the construction torque value deviation 10% with interior be qualified.
The whole screwing torque value of high-strength bolt auxiliary connection is calculated as follows: Tc=K * Pc * d
Tc one whole screwing torque value (N.m) in the formula
Pc---construction pretension value standard value (kN)
D---bolt nominal diameter (mm)
K---torque coefficient (0.11～0.15)
The high-strength bolt auxiliary connection is executed and is twisted pretension value standard value
Three, leaning tower spatial steel structure survey control technology is as follows:
Sign tower space structures complexity, its installation accuracy requires very high again, and cast-in fixing bolt backing plate flange center absolute altitude horizontal direction deviate is less than ± 5mm, and the vertical direction deviate is less than ± 2mm, and the angular deviation value is less than ± 0.02 °.
1) overall control
Plane control: place control survey, rudimentary according to senior control, by integral body to local, the measurement principle controlled step by step of the broken portion in control back earlier, in conjunction with place, engineering construction design feature, needs according to on-the-spot sighting condition and site operation, with the city traverse station is senior control point 8, laid a back traverse around along the place, as the First Control traverse net.Error is higher than 1/40000 in the lead total length, and azimuth closure is less than ± 5n1/2 " (n is the traverse station number), precision index after the adjustment: mean square error of angle observation is less than ± 4 ", the length of side relatively in error be higher than 1/45000.Fig. 4 is the back traverse control net schematic diagram of laying around the fabricating yard:
The measuring of axial line control point, change face head point method throw to be surveyed routinely, and through adjustment, check after, adopt the method for direct coordinate measuring to go out thin portion such as other line and body of wall control line line.For the ease of checking, with suitable density pre-stationary point is set each flowing water section planted agent, check that for the some position of sign tower adopting the laser vertical instrument method to carry out cultellation checks.
2) vertical absolute altitude control
Control to the measurement that a last joint steel column connects from first segment:
Height measurement, the schematic diagram that Fig. 5 calculates for height measurement, when every joint was installed, the mid point G that selects a beam adopted the suspention steel ruler to transmit elevation as reference point, measures the absolute altitude of reference point according to following formula
Hm＝Hh+a+]+Δt+Δk
The absolute altitude of mid point that Hm surveys;
Bench level on the Hh ground;
The steel ruler distance;
Δ t steel ruler temperature correction number;
The long correction of Δ k steel ruler chi.
Owing to be subjected to the influence of field condition, can not all be to transmit the elevation method with the suspention steel ruler, the final decision water pipe is as the criterion with surveyed basic point, and other each points are carried out levelling.Concrete grammar is: the transparent water pipe that selects 30m φ 10, earlier water pipe is filled water (noting in the water pipe bubble being arranged), with the two ends drawknot, in case in-pipe flow goes out, the knot at water pipe two ends is opened, one end leans against on the reference point earlier, the other end leans against on measured point H, the I, and slowly mobile water pipe (last or following), make water column in the water pipe of reference point one end gradually near reference point, the concave meniscus of adjusting to this some place water column at last is with equal substantially on schedule, the discrepancy in elevation of usefulness set square measuring point and reference point, carry out record, adjust when mounted then.
3) to compression column and be subjected to stay column to measure control, and use following satisfactory after correcting: to the overproof person of verticality, available hoist engine draws king-post round about, and after meeting the requirements, the gap that the king-post flange is produced pads with lock washer.
4) deformation measurement after the completion
With reference to figure 6, be the deformation measurement schematic diagram after being completed.At the selected particular point S point of cat head, when guaranteeing that tower deforms, when setting up transit observation S point, M, N point can both observe.Concrete grammar is:
Be " X " axle in the coordinate system with " X " axle in the drawings, be " Y " axle in the coordinate system with " C " axle, so as long as calculate the coordinate that S order during each observation, the record of observing is compared at every turn, just can calculate the deformation result that indicates tower.The distance that the M point is ordered to N among the figure is 2L, and O is the mid point that M point and N are ordered.When the distortion of sign tower, can go out the coordinate that S is ordered according to data computation such as α, β and 2L by the applied mathematics formula.Reasoning is as follows:
By | MR|tag α=| NR|tag β=| RS|, | MR|+|NR|=2L releases | MR| and | the distance of NR|, promptly draw the coordinate that S is ordered, draw deformation result by each time coordinate figure.
In sum, the present invention deepens design to the steel work schematic design on the basis that structural system forms, and designs detailed dimensions, position, horizontal angle, the vertical angle of " wind up, lower edge, web member, connected node " etc. of each element of construction; " the tiltedly space truss formula frame construction leaning tower of triangular taper " to this complexity carries out the processing of spatial steel structure bar element body, control its precision, error is less than 2mm, guarantee welding quality (ultrasonic testing/ ultrasonic examination reach 100% qualified), optimum organization goes out the most rational a kind of erection sequence, be beneficial to on-the-spot the installation, the tower body in the field-mounted process is carried out interim overturning or slip resistance analysis control, finish head tower main body rod member at last and install.And reach following effect:
(1) uses leaning tower spatial steel structure triangular taper giant steel tube trussed construction cell cube processing and fabricating technology,, solved the processing and fabricating difficult problem of spatial steel structure by adopting advanced space orientation, processing and welding procedure;
(2) at engineering characteristic, technical barriers such as accurately locate in the space of having researched and solved the spatial steel structure leaning tower, high-altitude segmented combined hanging.
(3) adopt leaning tower steel column pin inclination cast-in fixing bolt technology.By processing mold, the control of employing total powerstation, solved the quality control difficult problem of inclination cast-in fixing bolt.
The above is preferred embodiment of the present invention only, is not to be used for limiting practical range of the present invention; Every according to equivalence variation and modification that the present invention did, all contained by claim of the present invention.
Claims (10)
1. an inclination triangular taper truss frame structure is characterized in that, includes triangular pyramid frustum portion and triangular pyramid top tip part;
The truss leg of three crest lines of described triangular pyramid frustum portion for being formed by connecting by flange by a plurality of lattice columns unit, the suspension column of described three truss legs is fixed on the base station as described triangular pyramid bottom surface, truss leg be the pressurized truss leg and with the angle of described triangular pyramid bottom surface greater than 90 ° and less than 110 °, other two truss legs be the tension truss leg and with the angle of described bottom surface greater than 50 ° and less than 65 °; Described triangular pyramid frustum portion also comprises a plurality of girder trusses that formed by the lattice column element solder, divides a plurality of parallel layers to connect by flange between described truss leg by the mode parallel with described triangular pyramid bottom surface;
Described lattice column unit is welded by many steel pipes and flange, and described lattice column connects by flange between the unit;
Described triangular pyramid top tip part is the integrative-structure by steel pipe welding, and three crest lines of described triangular pyramid top tip part be the steel pipe along the truss leg welding extension of described triangular pyramid frustum portion.
2. inclination triangular taper truss frame structure according to claim 1 is characterized in that, every 2 or 3 described parallel layers an enhancement Layer is set, and also is provided with diagonal brace between described parallel layers.
3. inclination triangular taper truss frame structure according to claim 1 is characterized in that, is coated with stone curtain wall at the external surface of described triangular pyramid frustum portion, is coated with curtain wall at the external surface of described triangular pyramid top tip part.
4. as claim 1,2 or 3 described inclination triangular taper truss frame structures, it is characterized in that, the angle of described pressurized truss leg and described triangular pyramid bottom surface is 99.68 °, and the angle of described two tension truss legs and described triangular pyramid bottom surface is 64.69 °.
5. frame construction according to claim 4 is characterized in that, the suspension column that the suspension column of described three truss legs forms with described pressurized truss leg is the isosceles triangle on summit, and drift angle is 50 °.
6. inclination triangular taper truss frame structure according to claim 5 is characterized in that the base of described isosceles triangle is 25.2 meters, and height is 27 meters, and the spacing of described parallel layers is 12 meters, and described triangular pyramid frustum portion is high 73 meters.
7. making, the mounting method of an inclination triangular taper truss frame structure as claimed in claim 1 is characterized in that, comprise the steps:
Step 1, welding production are used to assemble the lattice column unit of truss leg and girder truss, the triangular pyramid top tip part that welding production is made up of steel tubular structure;
Step 2 is built the base station as described triangular pyramid bottom surface;
Step 3 lifts described lattice column unit, is welded to form described truss leg and girder truss on described base station, forms described triangular pyramid frustum portion;
Step 4, with the top of described triangular pyramid top tip part lifting to described frustum portion, three crest lines that make described triangular pyramid top tip part extend alignment along three truss legs of described triangular pyramid frustum portion.
8. making, the mounting method of inclination triangular taper truss frame structure according to claim 7 is characterized in that described step 3 further comprises:
Step 31 is carried out suspension column and is measured, the first segment pressurized truss leg of the composition described pressurized truss leg of lifting between the suspension column and first parallel layers, and two first segment tension truss legs of described two tension truss legs are formed in lifting; Lifting is positioned at described first parallel layers and connects three first floor girder trusses of described three truss legs respectively;
Step 32, the lifting second joint pressurized truss leg and two second joint tension truss legs between first parallel layers and second parallel layers; Lifting is positioned at described second parallel layers and connects three second layer girder trusses of described three truss legs respectively;
Step 33 is installed the face beam between first and second layer girder truss;
Step 34, the truss leg and the girder truss of the last layer of installation existing layer;
Step 35 is installed the girder truss of described last layer and the face beam between the described existing layer girder truss;
Step 36, repeating step 34,35 is up to the described triangular pyramid frustum of composition portion.
9. one kind is used for the making of the described inclination triangular of claim 7 taper truss frame structure, the measuring method of mounting method, it is characterized in that, comprises the steps:
Step 91, when truss leg that each layer is installed and girder truss, the mid point that selects a girder truss adopts the suspention steel ruler to transmit elevation as reference point, measures the absolute altitude of described reference point;
Step 92 is measured the site error of the truss leg and the girder truss of each layer, and is adjusted;
Step 93, measure the bulk deformation of described frame construction, at the selected Chosen Point of described triangular pyramid top tip part, 2 on plane, place, described triangular pyramid bottom surface are set up transit, and guarantee that described transit can observe described Chosen Point when described frame construction deforms, repeatedly observe afterwards, the record of each observation is compared, calculate the deformation result of described frame construction.
10. the making of inclination triangular taper truss frame structure according to claim 9, the measuring method in the mounting method, it is characterized in that, adjustment in the described step 92 comprises: to surpassing the truss leg of the vertical direction limit of error, draw round about with hoist engine, after meeting the requirements, the gap that produces between the flange with truss leg pads with lock washer.
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| CNB200410009458XA CN100366855C (en) | 2004-08-20 | 2004-08-20 | Inclined triangular pyramid truss type frame construction and method for making, mounting and measuring the same |
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| CNB200410009458XA CN100366855C (en) | 2004-08-20 | 2004-08-20 | Inclined triangular pyramid truss type frame construction and method for making, mounting and measuring the same |
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| CN1737313A CN1737313A (en) | 2006-02-22 |
| CN100366855C true CN100366855C (en) | 2008-02-06 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100465578C (en) * | 2007-10-18 | 2009-03-04 | 大连船舶重工集团有限公司 | Large-scale truss type stake leg segmentation data detection method |
| CN101629460B (en) * | 2009-08-20 | 2011-09-28 | 中国电力科学研究院 | Transversal loading tower and longitudinal loading tower for extra high voltage pole and tower test base |
| CN102418317A (en) * | 2011-11-10 | 2012-04-18 | 中铁二十三局集团有限公司 | Field manufacturing method for lattice pier |
| CN102747779A (en) * | 2012-07-25 | 2012-10-24 | 曾红 | Space structure |
| CN104526283B (en) * | 2014-12-19 | 2017-01-25 | 华泰重工(南通)有限公司 | Variable-section-type three-dimensional triangular truss manufacturing process |
| CN108894580B (en) * | 2018-08-01 | 2020-03-31 | 南通泰胜蓝岛海洋工程有限公司 | Construction process of flare tower |
| CN111927187A (en) * | 2020-07-01 | 2020-11-13 | 江苏润凯电力设备有限公司 | Rapid assembly process for structural support of power transmission tower |
Citations (4)
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|---|---|---|---|---|
| GB2116615A (en) * | 1982-03-12 | 1983-09-28 | Tecnomare Spa | Fixed gravity platform of reticular tripod structure |
| US4669917A (en) * | 1984-12-04 | 1987-06-02 | Norsk Hydro A.S. | Fixed marine steel structure and procedure for assembly of the structure |
| CN2387200Y (en) * | 1999-08-30 | 2000-07-12 | 董彦 | Rhombus steel pipe tower for power transmission line |
| CN1095914C (en) * | 1997-04-10 | 2002-12-11 | 奥塔诺姆建筑元件推销股份有限公司 | Lattice beam for production of mobile constructions |
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- 2004-08-20 CN CNB200410009458XA patent/CN100366855C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2116615A (en) * | 1982-03-12 | 1983-09-28 | Tecnomare Spa | Fixed gravity platform of reticular tripod structure |
| US4669917A (en) * | 1984-12-04 | 1987-06-02 | Norsk Hydro A.S. | Fixed marine steel structure and procedure for assembly of the structure |
| CN1095914C (en) * | 1997-04-10 | 2002-12-11 | 奥塔诺姆建筑元件推销股份有限公司 | Lattice beam for production of mobile constructions |
| CN2387200Y (en) * | 1999-08-30 | 2000-07-12 | 董彦 | Rhombus steel pipe tower for power transmission line |
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