CN106223623A - Steel construction box arched roof truss installation method - Google Patents
Steel construction box arched roof truss installation method Download PDFInfo
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- CN106223623A CN106223623A CN201510294339.1A CN201510294339A CN106223623A CN 106223623 A CN106223623 A CN 106223623A CN 201510294339 A CN201510294339 A CN 201510294339A CN 106223623 A CN106223623 A CN 106223623A
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Abstract
A kind of steel construction box arched roof truss girder truss installation method, it is characterized in that comprising the following steps: setting up of a theodolite three-dimensional coordinate system, b, measurement and positioning, measuring of 3 d space coordinate system is accurately positioned from the coordinate position of arched roof truss girder truss, levelness, perpendicularity comprehensively, arched roof truss girder truss is made reliably to dock, c examination is hung, the control in d hoisting process, and e corrects and f fixes.The steel construction box arched roof truss installation method of the present invention, has the characteristic using dead man lifting steel construction box arched roof truss, it is possible to be accurately positioned, meet the stability that whole arched girder is set a roof beam in place.Particularly big in span, arch requires more to embody, in engineering higher, that girder truss docking welding requirements is strict, the advantage improving steel structure installation effectiveness.
Description
Technical field
The present invention relates to a kind of roof truss installation method, specifically, be a kind of steel construction box arched roof truss installation method.
Background technology
The lifting mode of domestic steel construction is varied, and along with the development of science and technology, moulding and the version of steel construction also become increasingly complex, and this brings new challenge to the lifting construction of steel construction.Traditional steel structural roof install simply perusal by installation personnel come group to, fixing, especially to there is the girder steel of certain arch, installing and being easy to that boil on the nape opposite the mouth error occurs, the later stage easily causes total system unbalance stress, safety problem occurs.
The most known steel structural roof installation method also exists above-mentioned all inconvenience and problem.
Summary of the invention
The purpose of the present invention, is to propose a kind of steel construction box roof truss installation method using 2 theodolites to constitute 3 d space coordinate measurement system.
It is another object of the present invention to propose a kind of use dead man and control lifting steel construction piece, the most accurately steel construction box roof truss installation method from horizontal angle, vertical angle.
For achieving the above object, the technical solution of the present invention is:
A kind of steel construction box arched roof truss girder truss installation method, it is characterised in that comprise the following steps:
A, the setting up of theodolite three-dimensional coordinate system
There is provided two theodolites, two theodolite erect-positions that taking aim at mutually and to component, the good observation of station meter between transit station to be met is set, it is to avoid blind area；After the system oriented of two theodolite three-dimensional coordinate systems completes, three-dimensional coordinate System forming, and obtain corresponding data parameters: the level interval between two theodolites, the discrepancy in elevation, and horizontal angle corresponding to measured point and vertical angle be also instructed to by two theodolites；It is directed at arched roof truss girder truss measured point by two theodolites simultaneously, utilizes horizontal angle, four measured values of vertical angle to calculate three-dimensional coordinate, calculated the coordinate figure obtaining arched roof truss girder truss measured point by adjustment Software；
B, measurement and positioning, measuring of 3 d space coordinate system is accurately positioned from the coordinate position of arched roof truss girder truss, levelness, perpendicularity comprehensively, makes arched roof truss girder truss reliably dock, meets the required precision of arched roof truss girder truss, comprise the following steps:
(1) introduce, according to the labelling on periphery permanent building, the relief that approval is errorless, the website that point i.e. theodolite is set up is measured as new, 5 observation stations laid on arched roof truss girder truss are measured, according to surveyed horizontal angle, vertical angle data, measurement point coordinates is obtained by compensating computation the absolute altitude of each observation station；
(2) according to the calibration point set on two stigma pre-embedded steel slabs in advance, calibration point is arranged on two stigma pre-embedded steel slab centrages in length and breadth, 5 observation stations on arched roof truss girder truss are carried out repetition measurement, actual height by arch truss beam-ends face, utilize each point vertical coordinate to carry out discrepancy in elevation comparison, control the deviation of horizontal plane；Measure point according to two ends and preset the abscissa comparison of calibration point with stigma, control arched girder and set a roof beam in place the deviation of vertical vertical, after controlling to put in place, the girder truss lifted will be fixed and weld；
C, examination are hung
Before formally carrying out the lifting of steel construction box arched roof truss girder truss, carry out manufacturability examination hang work, during examination is hung, use and cause the new measurement point of Hoisting Position (measuring the theodolite website of steel truss) from periphery known coordinate point, the coordinate of two stigma pre-embedded steel slab calibration points, two theodolites are utilized to measure point by the three-dimensional coordinate system set up from new, the coordinate of 5 observation stations on arched roof truss girder truss is obtained by measuring point coordinates compensating computation, the coordinate of obtained coordinate figure and approval point is carried out the discrepancy in elevation, coordinate comparison in length and breadth, control its absolute altitude, levelness and perpendicularity construction technical data；
Control in d, hoisting process
(1) lifting of arched roof truss girder truss is in the range of the dead man first moved on to by arched roof truss girder truss good for on-site consolidation near mount point lifts by crane, dead man head arranges and is perpendicular to above arched roof truss girder truss, and arched roof truss girder truss is lifted in place when tightening up lifting by steel wire rope；
(2) when lifting, lifting space must is fulfilled for the status requirement that arched roof truss girder truss rotates, arched roof truss girder truss moves, in order to be controlled arched roof truss girder truss perpendicularity；Before formal lifting, the observation station on steel beam column girder truss, the vertical centrage in girder truss two ends, two stigma pre-embedded steel slab calibration points, the mark of pre-embedded steel slab central datum line should be set；When lifting in place, note the reliable docking of arched roof truss girder truss and two stigma pre-embedded steel slabs, measure in real time with datum line according to centrage, after the most in place, observation station is surveyed by the three-dimensional coordinate system utilizing measurement o'clock to be set up by 2 theodolites, obtains corresponding coordinate points, by calibration point and observation station coordinate comparison, carry out the adjustment of the discrepancy in elevation, in length and breadth coordinate, meet corresponding coordinate, levelness and perpendicularity, make arched roof truss girder truss the most in place；
E, rectification
Reference for installation chi on arched roof truss girder truss, steel roofing, according to the observation station laid, centrage, the three-dimensional coordinate system set up by theodolite forms spatial model, carries out correcting control to levelness, perpendicularity, absolute altitude and the amount of deflection of whole arched roof truss girder truss；
F, fixing
After arched roof truss girder truss utilizes theodolite three-dimensional coordinate system to correct verification zero deflection, tighten arched roof truss girder truss bolts at two ends, make arched roof truss girder truss form permanent support system.
The steel construction box arched roof truss installation method of the present invention can also be further achieved by the following technical measures.
Aforesaid method, wherein said step b(1) in, observation station includes end points, break, central point.
After using technique scheme, the steel construction box arched roof truss installation method of the present invention, there is the characteristic using dead man lifting steel construction box arched roof truss, it is possible to be accurately positioned, meet the stability that whole arched girder is set a roof beam in place.Particularly big in span, arch requires more to embody, in engineering higher, that girder truss docking welding requirements is strict, the advantage improving steel structure installation effectiveness.
Accompanying drawing explanation
Fig. 1 is the 1st theodolite and the job site layout schematic diagram of the 2nd theodolite of the embodiment of the present invention；
Fig. 2 is the 1st theodolite and the 2nd theodolite of the embodiment of the present invention and measures operating diagram.
In figure: 1 concrete column, 2 girder steels, 3 the 1st theodolites, 4 the 2nd theodolites, A, B, C, D, E represent 5 observation stations on arched roof truss girder truss.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing thereof, the present invention is illustrated further.
Embodiment 1
The construction process of the steel construction box arched roof truss installation method of the present invention is as follows:
Theodolite sets station → orient, sets up coordinate-system → Pin steel structure truss dead man lifting → measure → calculate → correct
→ fixing.
The steel construction box arched roof truss installation method of the present invention comprises the following steps:
Schematic diagram is arranged in job site referring now to the 1st theodolite that Fig. 1 and Fig. 2, Fig. 1 are the embodiment of the present invention and the 2nd theodolite, and Fig. 2 is the 1st theodolite and the 2nd theodolite of the embodiment of the present invention and measures operating diagram.
A, the setting up of theodolite three-dimensional coordinate system
What theodolite erect-position must was fulfilled between survey station takes aim at and mutually to component, the good observation of station meter, it is to avoid blind area；After system oriented completes, three-dimensional coordinate system is formed, corresponding data parameters: the level interval of instrument, the discrepancy in elevation of instrument, two theodolites also will instructions to horizontal angle corresponding to measured point and vertical angle, it is directed at measured point by two theodolites simultaneously, utilize horizontal angle, four measured values of vertical angle to calculate three-dimensional coordinate, calculated the coordinate figure of measured point by adjustment Software, such as the C (x of measured point C, y, z)；
B, measurement and positioning
Measuring of 3 d space coordinate system is accurately positioned from the coordinate position of component, levelness, perpendicularity comprehensively, makes arch steel structure truss reliably dock, and meets the required precision of component equipment.
Measurement and positioning: first introduce according to the labelling on periphery permanent building and check and approve errorless relief, as new measurement point, 5 observation stations (end points, break, central point) laid on girder truss are measured, according to surveyed data (horizontal angle, vertical angle), measurement point coordinates is obtained by compensating computation the absolute altitude of each observation station.
Calibration point (on stigma centrage in length and breadth) according to setting on two stigma pre-embedded steel slabs in advance carries out repetition measurement to 5 observation stations on truss, by the component face height of actual measurement, utilizes each point vertical coordinate to carry out discrepancy in elevation comparison, controls the deviation of horizontal plane.Preset the abscissa comparison of calibration point according to two ends measurement point and stigma, control the deviation of vertical.After controlling to put in place, will be fixed and weld；
C, examination are hung
Should conscientiously carry out manufacturability examination before formally carrying out the lifting of steel construction string frame and hang work, during examination is hung, use and cause the new measurement point of Hoisting Position (measuring the theodolite website of steel truss) from periphery known coordinate point, the coordinate of two stigma pre-embedded steel slab calibration points (on stigma centrage in length and breadth), 2 theodolites are utilized to measure point by the three-dimensional coordinate system set up from new, the coordinate of 5 observation stations on steel truss is obtained by measuring point coordinates compensating computation, the coordinate of obtained coordinate figure and approval point is carried out the discrepancy in elevation, coordinate comparison in length and breadth, control its absolute altitude, the construction technical data such as levelness and perpendicularity；
Control in d, hoisting process
Steel Truss Beam lifting is first to be moved on to by the component that on-site consolidation is good near mount point near mount point in the range of dead man lifting, and head should be perpendicular to above component, and steel wire rope tightens up during lifting lifting component is in place.
When lifting, lifting space must is fulfilled for the status requirement that component rotates, component moves, in order to be controlled girder truss perpendicularity.Before formal lifting, observation station should be set, check and approve point and the mark of centrage.When lifting in place, it should be noted that girder truss docks with the reliable of pre-embedded steel slab, measure in real time with datum line according to centrage, after the most in place, utilize observation station to pass through the three-dimensional coordinate system of 2 theodolites foundation and survey measuring point, obtain corresponding coordinate points, by calibration point and measurement point coordinates comparison, carry out the adjustment of the discrepancy in elevation, in length and breadth coordinate, meet corresponding coordinate, levelness and perpendicularity so that it is the most in place；
E, rectification
Reference for installation chi on steel structure girder, steel roofing, according to the observation station laid, centrage, the three-dimensional coordinate system set up by theodolite forms spatial model, carries out correcting control to levelness, perpendicularity, absolute altitude and the amount of deflection of whole steel construction
F, fixing
After steel roof truss utilizes theodolite three-dimensional coordinate system to correct verification zero deflection, tighten roof truss bolts at two ends so that it is form permanent support system.
The present invention has substantive distinguishing features and significant technological progress, the steel construction box arched roof truss installation method of the present invention, use 2 theodolites to constitute 3 d space coordinate and measure system, dead man is utilized to lift steel construction piece, it is precisely controlled from horizontal angle, vertical angle, absolute altitude etc. comprehensively, meet arch steel structure reliably to dock, solve the problem that error occurs in installation accuracy.
The steel construction box arched roof truss installation method of the present invention uses in track traffic command centre of Fuzhou City engineering.This engineering is positioned at Taijiang District, Fuzhou City Guang Dalu and reaches intersection northeast corner plot.In engineering, tower skirt building 5 floor roofing uses steel roof truss form, and Steel Structural Design service life is 100 years, and safety classes of structure is one-level.On roof truss, lower edge uses welding box-shaped pipe, and intermediate connecting rod has welding H-bar, H profile steel, welding box-shaped pipe.Steel construction box (arch) roof truss lifting precision controlling uses 2 theodolites to constitute 3 d space coordinate and measures system, utilizes dead man lifting steel construction piece to construct.Engineering steel construction box (arch) roof truss is made up of the 5 welding box-shaped pipes of Pin GHJ1, the 25 welding box-shaped pipes of Pin GHJ2 and GL1, GL2, GC1 steel structure connecting member.Middle tower box shape steel structure roof truss has been constructed at four layer concrete posts, and concrete strength carries out steel structure hoisting construction after reaching requirement.
Steel construction box roof truss makes and starts from March 20th, 2015, due to roof truss GHJ1 length more greatly 34m, has therefore carried out segmented assembly at maker, has been transported to building site and carries out lifting operation after reaching requirement.Every Pin steel structure utilizes dead man lifting to concrete column, and the 3 d space coordinate set up by theodolite measures system, carries out precision controlling, makes modular level degree, perpendicularity, absolute altitude etc. reach requirement.This engineering has carried out the lifting operation of steel roof truss on April 15th, 2015, has lifted on May 10th, 2015, and whole roof truss passes through theodolite 3 D Coordinate Measuring System, and precision controlling puts in place, and stability meets requirement.
This project arch steel structure roofing lifting precision controlling uses the steel construction box arched roof truss installation method of the present invention, wherein 2 theodolites constitute 3 d space coordinate and measure system, dead man is utilized to lift steel construction piece, it is precisely controlled from horizontal angle, vertical angle, absolute altitude etc. comprehensively, meet arch steel structure reliably to dock, solve the problem that error occurs in installation accuracy.During lifting monitoring, management and owner's representative is had to carry out other station, observation examination etc..
Checking and accepting display by checking, observing, this engineering arch steel structure lifting precision, stability meet design and code requirement, the respectively favorable comment of the side of being taken part in building.
Above example is used for illustrative purposes only, rather than limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, it is also possible to make various conversion or change.Therefore, the technical scheme of all equivalents also should belong to scope of the invention, should be limited by each claim.
Claims (2)
1. a steel construction box arched roof truss girder truss installation method, it is characterised in that comprise the following steps:
A, the setting up of theodolite three-dimensional coordinate system
There is provided two theodolites, two theodolite erect-positions that taking aim at mutually and to component, the good observation of station meter between transit station to be met is set, it is to avoid blind area；After the system oriented of two theodolite three-dimensional coordinate systems completes, three-dimensional coordinate System forming, and obtain corresponding data parameters: the level interval between two theodolites, the discrepancy in elevation, and horizontal angle corresponding to measured point and vertical angle be also instructed to by two theodolites；It is directed at arched roof truss girder truss measured point by two theodolites simultaneously, utilizes horizontal angle, four measured values of vertical angle to calculate three-dimensional coordinate, calculated the coordinate figure obtaining arched roof truss girder truss measured point by adjustment Software；
B, measurement and positioning, measuring of 3 d space coordinate system is accurately positioned from the coordinate position of arched roof truss girder truss, levelness, perpendicularity comprehensively, makes arched roof truss girder truss reliably dock, meets the required precision of arched roof truss girder truss, comprise the following steps:
(1) introduce, according to the labelling on periphery permanent building, the relief that approval is errorless, the website that point i.e. theodolite is set up is measured as new, 5 observation stations laid on arched roof truss girder truss are measured, according to surveyed horizontal angle, vertical angle data, measurement point coordinates is obtained by compensating computation the absolute altitude of each observation station；
(2) according to the calibration point set on two stigma pre-embedded steel slabs in advance, calibration point is arranged on two stigma pre-embedded steel slab centrages in length and breadth, 5 observation stations on arched roof truss girder truss are carried out repetition measurement, actual height by arch truss beam-ends face, utilize each point vertical coordinate to carry out discrepancy in elevation comparison, control the deviation of horizontal plane；Measure point according to two ends and preset the abscissa comparison of calibration point with stigma, control arched girder and set a roof beam in place the deviation of vertical vertical, after controlling to put in place, the girder truss lifted will be fixed and weld；
C, examination are hung
Before formally carrying out the lifting of steel construction box arched roof truss girder truss, carry out manufacturability examination hang work, during examination is hung, use and cause, from periphery known coordinate point, the measurement point that Hoisting Position is new, i.e. measure the theodolite website of steel truss, the coordinate of two stigma pre-embedded steel slab calibration points, two theodolites are utilized to measure point by the three-dimensional coordinate system set up from new, the coordinate of 5 observation stations on arched roof truss girder truss is obtained by measuring point coordinates compensating computation, the coordinate of obtained coordinate figure and approval point is carried out the discrepancy in elevation, coordinate comparison in length and breadth, control its absolute altitude, levelness and perpendicularity construction technical data；
Control in d, hoisting process
(1) lifting of arched roof truss girder truss is in the range of the dead man first moved on to by arched roof truss girder truss good for on-site consolidation near mount point lifts by crane, dead man head arranges and is perpendicular to above arched roof truss girder truss, and arched roof truss girder truss is lifted in place when tightening up lifting by steel wire rope；
(2) when lifting, lifting space must is fulfilled for the status requirement that arched roof truss girder truss rotates, arched roof truss girder truss moves, in order to be controlled arched roof truss girder truss perpendicularity；Before formal lifting, the observation station on steel beam column girder truss, the vertical centrage in girder truss two ends, two stigma pre-embedded steel slab calibration points, the mark of pre-embedded steel slab central datum line should be set；When lifting in place, note the reliable docking of arched roof truss girder truss and two stigma pre-embedded steel slabs, measure in real time with datum line according to centrage, after the most in place, observation station is surveyed by the three-dimensional coordinate system utilizing measurement o'clock to be set up by 2 theodolites, obtains corresponding coordinate points, by calibration point and observation station coordinate comparison, carry out the adjustment of the discrepancy in elevation, in length and breadth coordinate, meet corresponding coordinate, levelness and perpendicularity, make arched roof truss girder truss the most in place；
E, rectification
Reference for installation chi on arched roof truss girder truss, steel roofing, according to the observation station laid, centrage, the three-dimensional coordinate system set up by theodolite forms spatial model, carries out correcting control to levelness, perpendicularity, absolute altitude and the amount of deflection of whole arched roof truss girder truss；
F, fixing
After arched roof truss girder truss utilizes theodolite three-dimensional coordinate system to correct verification zero deflection, tighten arched roof truss girder truss bolts at two ends, make arched roof truss girder truss form permanent support system.
2. steel construction box arched roof truss installation method as claimed in claim 1, it is characterised in that described step b(1) in, observation station includes end points, break, central point.
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| CN107100271A (en) * | 2017-05-19 | 2017-08-29 | 中建局集团建设发展有限公司 | A kind of method that utilization adjustable drawbar adjusts steel member camber |
| CN107478162A (en) * | 2017-08-03 | 2017-12-15 | 中国航空工业集团公司西安飞机设计研究所 | A kind of stand mounting coordinate system construction method |
| CN108952181A (en) * | 2018-08-08 | 2018-12-07 | 中国冶集团有限公司 | A kind of tubular truss lifting installation method based on concrete column |
| CN114439249A (en) * | 2022-04-07 | 2022-05-06 | 中铁建工集团有限公司 | Construction method for lifting large-span triangular truss through air swivel |
| CN114622675A (en) * | 2022-04-06 | 2022-06-14 | 上海江海钢结构安装工程有限公司 | Energy-saving environment-friendly assembled roof truss and assembling method thereof |
| CN114809652A (en) * | 2022-05-20 | 2022-07-29 | 中国建筑第二工程局有限公司 | BIM-based roof arc truss positioning and hoisting method |
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| CN114622675A (en) * | 2022-04-06 | 2022-06-14 | 上海江海钢结构安装工程有限公司 | Energy-saving environment-friendly assembled roof truss and assembling method thereof |
| CN114622675B (en) * | 2022-04-06 | 2023-11-07 | 上海江海钢结构安装工程有限公司 | Energy-saving and environment-friendly assembled roof truss and assembling method thereof |
| CN114439249A (en) * | 2022-04-07 | 2022-05-06 | 中铁建工集团有限公司 | Construction method for lifting large-span triangular truss through air swivel |
| CN114809652A (en) * | 2022-05-20 | 2022-07-29 | 中国建筑第二工程局有限公司 | BIM-based roof arc truss positioning and hoisting method |
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