CN106223623B - Steel construction box arched roof truss installation method - Google Patents
Steel construction box arched roof truss installation method Download PDFInfo
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- CN106223623B CN106223623B CN201510294339.1A CN201510294339A CN106223623B CN 106223623 B CN106223623 B CN 106223623B CN 201510294339 A CN201510294339 A CN 201510294339A CN 106223623 B CN106223623 B CN 106223623B
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Abstract
A kind of steel construction box arched roof truss girder truss installation method, it is characterised in that include the following steps：A theodolite three-dimensional coordinate systems are set up, b, measurement and positioning, and the measurement of 3 d space coordinate system is accurately positioned comprehensively from the coordinate position of arched roof truss girder truss, levelness, verticality, arched roof truss girder truss is set reliably to dock, c examinations are hung, the control in d hoisting processes, and e corrections and f are fixed.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, can be accurately positioned, meet the stability that entire arched girder is set a roof beam in place.Especially span is big, arch is more demanding, girder truss butt welding requires more embody the advantages of improving steel structure installation effectiveness in stringent engineering.
Description
Technical field
The present invention relates to a kind of roof truss installation methods, specifically, being a kind of steel construction box arched roof truss installation method.
Background technology
The lifting mode of domestic steel construction is varied, with the continuous development of science and technology, the moulding of steel construction and knot
Configuration formula also becomes increasingly complex, this brings new challenge to the lifting construction of steel construction.Traditional steel structural roof installation is only
Be by installation personnel visually observe come group to, it is fixed, especially to there are the girder steels of certain arch, it is easy to appear right for installation
Slip of the tongue is poor, and the later stage be easy to cause total system unbalance stress, safety problem occurs.
Therefore known steel structural roof installation method there are problems that it is above-mentioned various inconvenient and.
Invention content
The purpose of the present invention is to propose a kind of steel constituting 3 d space coordinate measuring system using 2 theodolites
Structure box roof truss installation method.
It is another object of the present invention to propose that a kind of controlled from horizontal angle, vertical angle using dead man lifts steel construction piece,
Comprehensive accurately steel construction box roof truss installation method.
To achieve the above object, technical solution of the invention is：
A kind of steel construction box arched roof truss girder truss installation method, it is characterised in that include the following steps：
A, theodolite three-dimensional coordinate system is set up
Two theodolites are provided, the setting of two theodolite erect-positions to meet mutually taking aim between transit station and to component,
The good observation of station meter, avoids blind area；After the completion of the system oriented of two theodolite three-dimensional coordinate systems, three-dimensional coordinate system
It is formed, and obtains corresponding data parameters：Level interval, height difference and two theodolites between two theodolites is to tested
The corresponding horizontal angle of point and vertical angle are also instructed to；It is directed at arched roof truss girder truss measured point simultaneously by two theodolites, is utilized
Four horizontal angle, vertical angle measured values calculate three-dimensional coordinate, are calculated by adjustment Software and obtain arched roof truss girder truss measured point
Coordinate value；
B, measurement and positioning, the measurement of 3 d space coordinate system from the coordinate position of arched roof truss girder truss, levelness, hang down
Straight degree is accurately positioned comprehensively, and arched roof truss girder truss is made reliably to dock, and meets the required precision of arched roof truss girder truss, including with
Lower step：
（1）It is introduced according to the label on the permanent building of periphery and checks and approves errorless relief, passed through as new measurement point
The website that latitude instrument is set up measures 5 observation points laid on arched roof truss girder truss, according to surveyed horizontal angle, vertically
Angular data will measure point coordinates and obtain the absolute altitude of each observation point by compensating computation；
（2）According to the calibration point set on two column cap pre-embedded steel slabs in advance, calibration point is arranged in two column cap pre-embedded steel slabs
In length and breadth on center line, repetition measurement is carried out to 5 observation points on arched roof truss girder truss, passes through the practical height in arch truss beam-ends face
Degree carries out height difference comparison using each point ordinate, carrys out the deviation in controlled level face；According to both ends measurement point and the default calibration of column cap
The abscissa of point compares, and sets a roof beam in place the deviation of vertical vertical plane to control arched girder, after control in place, by the girder truss of lifting into
Row is fixed and welds；
C, examination is hung
Craftsmanship examination is carried out before formally carrying out the lifting of steel construction box arched roof truss girder truss and hangs work, and process is hung in examination
In, lead to the new measurement point of Hoisting Position using from periphery known coordinate point（Measure the theodolite website of steel truss）, two column caps
The coordinate of pre-embedded steel slab calibration point will be measured from new measurement point by the three-dimensional coordinate system of foundation using two theodolites
Point coordinates compensating computation obtains the coordinate of 5 observation points on arched roof truss girder truss, to obtained coordinate value and checks and approves point
Coordinate carries out height difference, in length and breadth coordinate comparison, controls its absolute altitude, levelness and verticality construction technical data；
D, the control in hoisting process
（1）The lifting of arched roof truss girder truss is first to move on to on-site consolidation good arched roof truss girder truss near installation point
Dead man lifts by crane in range, and dead man head is arranged above arched roof truss girder truss, by arch room when steel wire rope tightening is promoted
The lifting of frame girder truss is in place；
（2）In lifting, lifting space must satisfy the position of the rotation of arched roof truss girder truss, the movement of arched roof truss girder truss
Requirement is set, to control arched roof truss girder truss verticality；Before formal lifting, it should set on steel member girder truss
Observation point, girder truss both ends vertical centerline, two column cap pre-embedded steel slab calibration points, pre-embedded steel slab central datum line mark；
When lifting in place, notice that arched roof truss girder truss is docked with two the reliable of column cap pre-embedded steel slab, it is real according to center line and datum line
When measure, after preliminary in place, observation point is surveyed by the three-dimensional coordinate system that 2 theodolites are established using measurement point,
Corresponding coordinate points are obtained, are compared by calibration point and observation point coordinates, the adjustment of progress height difference, in length and breadth coordinate, to meet phase
Coordinate, levelness and the verticality answered, keep arched roof truss girder truss accurately in place；
E, it corrects
Reference for installation ruler passes through longitude and latitude according to the observation point of laying, center line on arched roof truss girder truss, steel roofing
The established three-dimensional coordinate system of instrument forms spatial model, to the levelness of entire arched roof truss girder truss, verticality, absolute altitude and
Amount of deflection carries out correction control；
F, fixation
After arched roof truss girder truss is using theodolite three-dimensional coordinate system correction verification zero deflection, arched roof truss truss is tightened
Beam bolts at two ends makes 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 using technical measures below come further real
It is existing.
Method above-mentioned, wherein the step b（1）In, observation point includes endpoint, break, central point.
After adopting the above technical scheme, the steel construction box arched roof truss installation method of the present invention, is had and is hung using dead man
The characteristic of steel loading structure box arched roof truss, can be accurately positioned, and meet the stability that entire arched girder is set a roof beam in place.Especially across
Degree is big, arch is more demanding, girder truss butt welding requires more embody in stringent engineering and improves the excellent of steel structure installation effectiveness
Point.
Description of the drawings
Fig. 1 is the construction site arrangement schematic diagram of the 1st theodolite and the 2nd theodolite of the embodiment of the present invention；
Fig. 2 is the 1st theodolite of the embodiment of the present invention and the 2nd theodolite and measures operating diagram.
In figure：1 concrete column, 3 the 1st theodolites, 4 the 2nd theodolites, A, B, C, D, E indicate on arched roof truss girder truss 5
Observation point.
Specific implementation mode
With reference to embodiments and its attached drawing illustrates further the present invention.
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 the Pin steel structure truss dead man lifting of coordinate-system → the first → measurement
→ calculating → correction → fixation.
The steel construction box arched roof truss installation method of the present invention includes the following steps：
It is the construction site cloth of the 1st theodolite and the 2nd theodolite of the embodiment of the present invention referring now to Fig. 1 and Fig. 2, Fig. 1
Schematic diagram is set, Fig. 2 is the 1st theodolite of the embodiment of the present invention and the 2nd theodolite and measures operating diagram.
A, theodolite three-dimensional coordinate system is set up
Theodolite erect-position must satisfy mutually taking aim between survey station and the good observation to component, station meter, avoid blind area；System
After the completion of system orientation, three-dimensional coordinate system has been formed, corresponding data parameters：The level interval of instrument, the height difference of instrument, Liang Tai
Theodolite will also indicate the corresponding horizontal angle in measured point and vertical angle, be directed at measured point simultaneously by two theodolites, utilize water
Four straight angle, vertical angle measured values calculate three-dimensional coordinate, the coordinate value of measured point are calculated by adjustment Software, such as measured point C
C (x, y, z)；
B, measurement and positioning
The measurement of 3 d space coordinate system is accurately positioned comprehensively from the coordinate position of component, levelness, verticality, makes arch
Shape steel structure truss reliably docks, and meets the required precision of component equipment.
Measurement and positioning：It is first introduced according to the label on the permanent building of periphery and checks and approves errorless relief, as new survey
Point is measured, to 5 observation points laid on girder truss（Endpoint, break, central point）It measures, according to institute's measured data（Horizontal angle,
Vertical angle）, point coordinates will be measured, the absolute altitude of each observation point obtained by compensating computation.
According to the calibration point set on two column cap pre-embedded steel slabs in advance（Column cap is in length and breadth on center line）To 5 on truss
Observation point carries out repetition measurement, by the component face height of actual measurement, carries out height difference comparison using each point ordinate, comes controlled level face
Deviation.The abscissa for presetting calibration point with column cap according to both ends measurement point compares, to control the deviation of vertical plane.Control is in place
Afterwards, it will be fixed and weld；
C, examination is hung
Craftsmanship examination should be conscientiously carried out before formally carrying out the lifting of steel construction string frame and hangs work, during examination is hung, used
The new measurement point of Hoisting Position is led to from periphery known coordinate point（Measure the theodolite website of steel truss）, two column cap pre-embedded steel slabs
Calibration point（Column cap is in length and breadth on center line）Coordinate, the three-dimensional coordinate body for passing through foundation from new measurement point using 2 theodolites
Measurement point coordinate adjustment, is calculated the coordinate of 5 observation points on steel truss by system, to obtained coordinate value and checks and approves point
Coordinate carries out height difference, in length and breadth coordinate comparison, controls the construction technical datas such as its absolute altitude, levelness and verticality；
D, the control in hoisting process
Steel Truss Beam lifting is that the good component of on-site consolidation is first moved on near installation point dead man near installation point to lift by crane model
In enclosing, head should be above component, and steel wire rope tightening is in place by lifting component when being promoted.
In lifting, lifting space must satisfy the status requirement of component rotation, component movement, so as to vertical to girder truss
Degree is controlled.Before formal lifting, observation point should be set, approval is put and the mark of center line.When lifting in place, it should be noted that
Girder truss is docked with the reliable of pre-embedded steel slab, is measured in real time with datum line according to center line, logical using observation point after preliminary in place
The three-dimensional coordinate system for crossing the foundation of 2 theodolites surveys measurement point, obtains corresponding coordinate points, passes through calibration point and survey
It measures point coordinates to compare, the adjustment of progress height difference, in length and breadth coordinate, to meet corresponding coordinate, levelness and verticality, keeps it accurate
In place；
E, it corrects
The reference for installation ruler on steel structure girder, steel roofing, it is built by theodolite according to the observation point of laying, center line
Vertical three-dimensional coordinate system forms spatial model, and correction control is carried out to the levelness of entire steel construction, verticality, absolute altitude and amount of deflection
System
F, fixation
After steel roof truss is using theodolite three-dimensional coordinate system correction verification zero deflection, roof truss bolts at two ends is tightened, is made
It forms permanent support system.
The present invention has substantive distinguishing features and significant technological progress, steel construction box arched roof truss installation side of the invention
Method constitutes 3 d space coordinate measuring system using 2 theodolites, and steel construction piece is lifted using dead man, from horizontal angle, vertically
Angle, absolute altitude etc. are precisely controlled comprehensively, are met arch steel structure and are reliably docked, and solve the problems, such as that error occurs in installation accuracy.
The steel construction box arched roof truss installation method of the present invention uses in rail traffic command centre of Fuzhou City engineering.
The engineering is located at Fuzhou City Taijiang District Guang Dalu and reaches intersection northeast corner plot.5 floor roofing of tower skirt building uses in engineering
Steel roof truss form, Steel Structural Design service life are 100 years, and safety classes of structure is level-one.Lower edge is using weldering on roof truss
Box pipe is connect, intermediate connecting rod has welding H-bar, H profile steel, welding box-shaped pipe.Steel construction box (arch) roof truss lifts precision control
System constitutes 3 d space coordinate measuring system using 2 theodolites, is constructed using dead man lifting steel construction piece.Engineering steel
Structure box（Arch）Roof truss is connected by the welding box-shaped pipes of 5 Pin GHJ1, the welding box-shaped pipes of 25 Pin GHJ2 and GL1, GL2, GC1 steel construction
Fitting forms.Middle tower box shape steel structure roof truss has been constructed in four layer concrete columns, and concrete strength carries out steel knot after reaching requirement
Structure lifting construction.
The making of steel construction box roof truss starts from March 20th, 2015, since roof truss GHJ1 length is 34m,
Manufactory has carried out segmented assembly, and building site progress lifting operation is transported to after reaching requirement.It is lifted to mixed using dead man per Pin steel structures
On solidifying earth pillar, the 3 d space coordinate measuring system established by theodolite carries out precision controlling, makes modular level degree, vertical
Degree, absolute altitude etc. reach requirement.The engineering carried out the lifting operation of steel roof truss on April 15th, 2015, until in May, 2015
Lifting on the 10th is completed, and entire roof truss is by theodolite 3 D Coordinate Measuring System, and in place, stability is met the requirements precision controlling.
The project arch steel structure roofing lifts precision controlling steel construction box arched roof truss installation side using the present invention
Method lifts steel construction piece wherein 2 theodolites constitute 3 d space coordinate measuring system using dead man, from horizontal angle, vertically
Angle, absolute altitude etc. are precisely controlled comprehensively, are met arch steel structure and are reliably docked, and solve the problems, such as that error occurs in installation accuracy.It is hanging
During dress monitoring, there is management and owner's representative have carried out other station, observation is checked and accepted etc..
Display is checked and accepted by checking, observing, engineering arch steel structure lifting precision, stability meets design and specification is wanted
It asks, respectively the favorable comment for the side of being taken part in building.
Above example is used for illustrative purposes only rather than limitation of the present invention, the technology people in relation to technical field
Member, without departing from the spirit and scope of the present invention, can also make various transformation or variation.Therefore, all equivalent
Technical solution should also belong to scope of the invention, should be limited by each claim.
Claims (2)
1. a kind of steel construction box arched roof truss installation method, it is characterised in that include the following steps：
A, theodolite three-dimensional coordinate system is set up
Two theodolites are provided, mutually taking aim at and to component, benchmark between meeting transit station is arranged in two theodolite erect-positions
The good observation of ruler, avoids blind area；After the completion of the system oriented of two theodolite three-dimensional coordinate systems, three-dimensional coordinate system shape
At, and obtain corresponding data parameters：Level interval, height difference and two theodolites between two theodolites is to measured point
Corresponding horizontal angle and vertical angle are also instructed to；It is directed at arched roof truss girder truss measured point simultaneously by two theodolites, utilizes water
Four straight angle, vertical angle measured values calculate three-dimensional coordinate, are calculated by adjustment Software and obtain arched roof truss girder truss measured point
Coordinate value；
B, measurement and positioning, the measurement of 3 d space coordinate system is from the coordinate position of arched roof truss girder truss, levelness, verticality
It is accurately positioned comprehensively, arched roof truss girder truss is made reliably to dock, meet the required precision of arched roof truss girder truss, including following step
Suddenly：
（1）It is introduced according to the label on the permanent building of periphery and checks and approves errorless relief, as new measurement point, that is, theodolite
The website set up measures 5 observation points laid on arched roof truss girder truss, according to surveyed horizontal angle, vertical angle number
According to, by measure point coordinates the absolute altitude of each observation point is obtained by compensating computation；
（2）According to the calibration point set on two column cap pre-embedded steel slabs in advance, calibration point setting two column cap pre-embedded steel slabs in length and breadth
On center line, repetition measurement is carried out to 5 observation points on arched roof truss girder truss, by the actual height in arch truss beam-ends face,
Height difference comparison is carried out using each point ordinate, carrys out the deviation in controlled level face；Calibration point is preset according to both ends measurement point and column cap
Abscissa compare, set a roof beam in place the deviation of vertical vertical plane to control arched girder, after control in place, the girder truss of lifting will be carried out
Fixed and welding；
C, examination is hung
Craftsmanship examination is carried out before formally carrying out the lifting of steel construction box arched roof truss girder truss hangs work, during examination is hung,
The new measurement point of Hoisting Position is led to using from periphery known coordinate point, that is, theodolite website, two column caps for measuring steel truss are pre-
The coordinate for burying steel plate calibration point, using two theodolites from new measurement point by the three-dimensional coordinate system of foundation, by measurement point
The coordinate of 5 observation points on arched roof truss girder truss is calculated in coordinate adjustment, to the seat of obtained coordinate value and approval point
Mark carries out height difference, in length and breadth coordinate comparison, controls its absolute altitude, levelness and verticality construction technical data；
D, the control in hoisting process
（1）The lifting of arched roof truss girder truss is the dead man first moved on to on-site consolidation good arched roof truss girder truss near installation point
It lifts by crane in range, dead man head is arranged above arched roof truss girder truss, by arched roof truss purlin when steel wire rope tightening is promoted
Lifting of setting a roof beam in place is in place；
（2）In lifting, lifting space must satisfy the rotation of arched roof truss girder truss, the position of arched roof truss girder truss movement is wanted
It asks, to control arched roof truss girder truss verticality；Before formal lifting, the sight on steel member girder truss should be set
The mark of measuring point, girder truss both ends vertical centerline, two column cap pre-embedded steel slab calibration points, pre-embedded steel slab central datum line；Lifting
When in place, notice that arched roof truss girder truss is docked with two the reliable of column cap pre-embedded steel slab, is surveyed in real time with datum line according to center line
Amount surveys observation point by the three-dimensional coordinate system that 2 theodolites are established using measurement point after preliminary in place, acquirement
Corresponding coordinate points are compared by calibration point and observation point coordinates, and the adjustment of progress height difference, in length and breadth coordinate is corresponding to meet
Coordinate, levelness and verticality keep arched roof truss girder truss accurately in place；
E, it corrects
The reference for installation ruler on arched roof truss girder truss, steel roofing, according to the observation point of laying, center line, by theodolite
The three-dimensional coordinate system of foundation forms spatial model, to levelness, verticality, absolute altitude and the amount of deflection of entire arched roof truss girder truss
Carry out correction control；
F, fixation
After arched roof truss girder truss is using theodolite three-dimensional coordinate system correction verification zero deflection, arched roof truss girder truss two is tightened
Terminal bolt makes arched roof truss girder truss form permanent support system.
2. a kind of steel construction box arched roof truss installation method as described in claim 1, which is characterized in that the step b's
Step（1）In, observation point includes endpoint, break, central point.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107100271B (en) * | 2017-05-19 | 2019-04-23 | 中建一局集团建设发展有限公司 | A method of steel member camber is adjusted using adjustable drawbar |
| CN107478162B (en) * | 2017-08-03 | 2019-11-29 | 中国航空工业集团公司西安飞机设计研究所 | A kind of rack mounting coordinate system construction method |
| CN108952181B (en) * | 2018-08-08 | 2021-01-19 | 中国一冶集团有限公司 | Pipe truss hoisting in-place method based on concrete columns |
| 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 |
| CN114439249B (en) * | 2022-04-07 | 2022-06-21 | 中铁建工集团有限公司 | Construction method for lifting large-span triangular truss through air swivel |
| CN114809652B (en) * | 2022-05-20 | 2023-03-31 | 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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