CN102759350A - High-altitude measuring method for construction of crane beams - Google Patents
High-altitude measuring method for construction of crane beams Download PDFInfo
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- CN102759350A CN102759350A CN2012102550632A CN201210255063A CN102759350A CN 102759350 A CN102759350 A CN 102759350A CN 2012102550632 A CN2012102550632 A CN 2012102550632A CN 201210255063 A CN201210255063 A CN 201210255063A CN 102759350 A CN102759350 A CN 102759350A
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Abstract
The invention relates to a high-altitude measuring method for construction of crane beams which are arranged on brackets with more than four in a row. The high-altitude measuring method for construction of crane beams is characterized in that the method comprises the following steps: (1) ground measurement is performed by virtue of a measurement instrument and a datum line which is needed for high-altitude measurement is drawn; (2) the measurement instrument is erected by virtue of a support at a middle bracket; (3) high-altitude measurement is performed and median axis datum lines of crane beams at other brackets are drawn; (4) the support and the measurement instrument are detached and the crane beams are lifted by aiming at the median axis datum lines; (5) step (2) is repeated; measurement is performed again and the top surface elevation and the horizontal position of the crane beams at all other brackets except the bracket which is used for erecting the measurement instrument are rechecked; (6) the support and the measurement instrument are transferred and installed and the crane beam at the bracket which is used for erecting the measurement instrument in step (5) is measured and rechecked. The method is characterized by high-altitude measurement, no restriction by ground condition, high efficiency, good measurement sight line and high working efficiency.
Description
Technical field
The invention belongs to the Construction of Steel Structure technical field, be specifically related to a kind of crane girder construction aerological measurement method.
Background technology
Guangxi South-South aluminium processing hot rolling mill engineering is a state key project financing as the ultra wide aluminium alloy plate processing of first high-performance of China factory.About 120,000 square metres of this project occupation of land area, about 1.8 ten thousand tons of steel using amount, the long 658m in workshop by forming between 6 standdle carriers, has 30 drivings in the workshop, and driving restarts weight 200t most.Whether the crane girder installation progress arrives design and code requirement, is one of key point of this engineering.
Carry out measurement unwrapping wire, lifting, the position correction of crane girder after bracket and the steel column installation; Adopted ground survey in the past; Instrument stand is located on the middle steel column basis; With original axis on former and later two steel column bases is horizontal reference, is that the high benchmark of mark is measured with the absolute altitude datum line of establishing on a certain fixture.Existing level measurement method is: through the absolute altitude reference point, absolute altitude is caused every steel column bottom, measure the absolute altitude of bracket, crane girder in the method for on every bracket, drawing chi through manual work.Before installing, to decide crane girder the position of crane girder axis in the setting-out of bracket upper surface; One people observes measuring instrument, and people setting-out on bracket is not because ground survey observes the bracket upper surface; Establish an object of reference and stretch out, decide the setting-out position through the observation object of reference from the bracket edge.Crane girder will be checked its position and the measurement of end face absolute altitude after installing; Equally; Because the ground survey sight line is bad, also object of reference to be set on crane girder, if observation station is a lot; Then object of reference all will be established in the everywhere, make that measuring process is complicated, not only efficient is low and also easy generation than mistake.In addition; The on-the-spot place of this engineering construction is higher than steel column basis 1 ~ 2m, and also there is a large amount of mounds in the working-yard, and intervisibility is in bad order between basis and the basis; And the crane girder fore-and-aft distance is longer; There is repeatedly the situation of turning point in ground survey, also can bring measuring error, causes crane girder absolute altitude and axis to exceed standard and allows requirement.How to overcome the defective of ground survey, the unwrapping wire before faster and better completion crane girder is installed, the correction after the installation, to detect be one of emphasis and difficult point of this engineering construction.
Summary of the invention
The object of the present invention is to provide and a kind ofly measure, do not receive the crane girder construction aerological measurement method of state of ground restriction in the high-altitude.
To achieve these goals, crane girder construction aerological measurement method of the present invention is used for the measurement that four above brackets of a row are installed crane girder, and it is characterized in that: it may further comprise the steps:
1. use the measuring instrument ground survey; Required datum line when drawing aerological measurement; Be specially: on first bracket, second bracket, the 4th bracket, draw the apophysis directrix of crane girder, on first bracket, draw the absolute altitude datum line, the absolute altitude datum line is higher than crane girder end face absolute altitude; First bracket and the 4th bracket are positioned at the outside of second bracket and the 3rd bracket;
2. on second bracket, set up measuring instrument with support;
3. be that forward sight, backsight benchmark are measured with the apophysis directrix on first bracket, the 4th bracket; Through using measuring instrument 5 aerological measurements on the support, the crane girder apophysis directrix on other all brackets except that first bracket, second bracket, the 4th bracket of drawing;
4. removal bracket and measuring instrument aim at apophysis directrix lifting crane girder;
5. behind the crane girder rigging out; Repeating step 2.; Once more through using measuring instrument 5 aerological measurements on the support; Check the end face absolute altitude and the horizontal level of the crane girder on other all brackets except that second bracket, level measurement is a benchmark with the absolute altitude datum line of step in 1., and the measurement of horizontal level is forward sight, backsight benchmark with the apophysis directrix on first bracket, the 4th bracket still;
6. support and measuring instrument transfer are installed on the 3rd bracket; Through using measuring instrument 5 aerological measurements on the support; Check the end face absolute altitude and the horizontal level of the crane girder 7 on the second bracket 1-2; The end face level measurement is a benchmark with the aerological measurement absolute altitude benchmark 10 of step in 1., and the measurement of horizontal level is forward sight, backsight benchmark with the apophysis directrix on the first bracket 1-1, the 4th bracket 1-4 still.
The invention has the beneficial effects as follows:
1. measure in the high-altitude, not limited by state of ground;
2. it is good to measure sight line, high efficiency;
3. directly observe crane girder, do not need object of reference.
Description of drawings
Fig. 1 is the synoptic diagram of the present invention when implementing.
Fig. 2 is the local vertical view that amplifies of Fig. 1 (omitting the structure below the bracket).
Fig. 3 is the use synoptic diagram of the support that relates among the present invention.
Among the figure: 1-bracket, the last steel column of 2-, 3-vertical rod, 4-cross bar, 5-measuring instrument, steel column under the 6-, 7-crane girder, 8-steel column basis, 9-ground survey absolute altitude benchmark, 10-aerological measurement absolute altitude benchmark, 11-longitudinal axis, 12-apophysis directrix; 1-1: first bracket; 1-2: second bracket; 1-3: the 3rd bracket; 1-4: the 4th bracket; 1-5: Wuniu leg.
Embodiment
As shown in Figure 1; Be decorated with axis (datum line during ground survey in the surface level) in length and breadth on the steel column basis 8; With wherein being called longitudinal axis 11 with crane girder 7 parallel axis, the position that a certain at the construction field (site) fixture is convenient to observe (on the factory building wall) is decorated with ground survey absolute altitude benchmark 9.From steel column basis 8 up is following steel column 6, bracket 1 and last steel column 2 successively.Install before the crane girder 7, following steel column 6, bracket 1 and last steel column 2 have been in place, and the upper surface absolute altitude of bracket 1 reaches installation requirement, and its alignment error only allows for negative, so that adjust the end face absolute altitude of crane girder 7 through parallels.Next get into measurement, the installation procedure of crane girder 7, i.e. the step that relates to of the inventive method.
Crane girder construction aerological measurement method is used for the measurement that four above brackets of a row are installed crane girder, may further comprise the steps:
1. use measuring instrument 5 ground surveys (described in the method such as background technology of ground survey); Required datum line when drawing aerological measurement; Be specially: (with longitudinal axis 11 is benchmark to the apophysis directrix 12 of picture crane girder 7 on the first bracket 1-1, the second bracket 1-2, the 4th bracket 1-4; Or be benchmark) for ease of observing from longitudinal axis 11 skew certain distances; On the first bracket 1-1, draw aerological measurement absolute altitude benchmark 10 (are benchmark with ground survey absolute altitude benchmark 9), aerological measurement absolute altitude benchmark 10 is higher than crane girder end face absolute altitude; The first bracket 1-1 and the 4th bracket 1-4 are positioned at the outside of the second bracket 1-2 and the 3rd bracket 1-3; (the first bracket 1-1 and the 4th bracket 1-4 be as two reference points, its spacing from as long as greater than the survey total length 1/2nd)
2. on the second bracket 1-2, set up measuring instrument with support;
3. be that forward sight, backsight benchmark are measured with the apophysis directrix 12 on the first bracket 1-1, the 4th bracket 1-4; Through using measuring instrument 5 aerological measurements on the support, the crane girder apophysis directrix 12 on other all brackets except that the first bracket 1-1, the second bracket 1-2, the 4th bracket four 1-4 of drawing;
4. removal bracket and measuring instrument 5 aim at the apophysis directrix 12 lifting crane girders 7 on each bracket;
5. behind crane girder 7 rigging outs; Repeating step 2.; Once more through using measuring instrument 5 aerological measurements on the support; Check the end face absolute altitude and the horizontal level of the crane girder 7 on other all brackets except that the second bracket 1-2, the end face level measurement is a benchmark with the aerological measurement absolute altitude benchmark 10 of step in 1., and the measurement of horizontal level is forward sight, backsight benchmark with the apophysis directrix 12 on the first bracket 1-1, the 4th bracket 1-4.(measure horizontal level and refer to check whether centering of crane girder and apophysis directrix 12)
6. support and measuring instrument 5 transfers are installed on the 3rd bracket 1-3; Through using measuring instrument 5 aerological measurements on the support; Check the end face absolute altitude and the horizontal level of the crane girder 7 on the second bracket 1-2; The end face level measurement is a benchmark with the aerological measurement absolute altitude benchmark 10 of step in 1., and the measurement of horizontal level is forward sight, backsight benchmark with the apophysis directrix 12 on the first bracket 1-1, the 4th bracket 1-4 still.
If the position that crane girder 7 is installed has deviation then need adjust, a people observes measuring instrument 5 and commands the fitting operation personnel to adjust, until satisfying installation requirement when checking measurement.Measuring instrument 5 is the construction line-putting common instrument.Can accomplish the measurement of axis and absolute altitude with total powerstation, perhaps survey axis, high with the spirit-leveling instrument mark with transit.
As row's bracket number (more than 5) more for a long time; In order to make measurand be easier to observation; Should forward sight, backsight benchmark be located at outermost; Measuring instrument 5 is erected at the centre position, and the promptly above-mentioned first bracket 1-1, the 4th bracket 1-4 are positioned at the two ends of row's bracket, and the second bracket 1-2 is positioned at row's bracket and leans on position intermediate most.
As shown in Figure 2; Above-mentioned support comprises the vertical rod 3 that places on the bracket 1; Vertical rod 3 tops are provided with cross bar 4; Cross bar 4 one ends are provided with " U " shape draw-in groove, and " U " shape draw-in groove is stuck on the H type to be fixed through bolt on steel column 2 edges of a wing, and cross bar 4 is provided with measuring instrument 5 stationary installations (like preformed hole or the mounting groove adaptive with measuring instrument 5).
In order to regulate position, the left and right sides, the position that is connected with vertical rod 3 on the cross bar 4 is provided with horizontal concrete chute, and bolt passes chute and connects.
In order to regulate height, the position that is connected with cross bar in the vertical rod 3 is provided with vertical chute, and bolt passes chute and connects.
The measurement of adopting the inventive method to carry out crane girder is installed; Only need three brackets of ground survey, middle one is set up measuring instrument, former and later two forward sights as aerological measurement, backsight benchmark; Measurement setting-out on all the other brackets is once set up measurement and can be accomplished in the high-altitude; Efficient is high, and sight line is good, does not exist because of being difficult to observe the situation of turning point measurement of having to.Has advantage under the situation long at whole factory building workshop crane girder fore-and-aft distance, that the bracket number is many all the more.
Claims (3)
1. crane girder construction aerological measurement method, it is characterized in that: it may further comprise the steps:
1. use the measuring instrument ground survey; Required datum line when drawing aerological measurement; Be specially: on first bracket, second bracket, the 4th bracket, draw the apophysis directrix of crane girder, on first bracket, draw the absolute altitude datum line, the absolute altitude datum line is higher than crane girder end face absolute altitude; First bracket and the 4th bracket are positioned at the outside of second bracket and the 3rd bracket;
2. on second bracket, set up measuring instrument with support;
3. be that forward sight, backsight benchmark are measured with the apophysis directrix on first bracket, the 4th bracket; Through using measuring instrument (5) aerological measurement on the support, the crane girder apophysis directrix on other all brackets except that first bracket, second bracket, the 4th bracket of drawing;
4. removal bracket and measuring instrument aim at apophysis directrix lifting crane girder;
5. behind the crane girder rigging out; Repeating step 2.; Once more through using the measuring instrument aerological measurement on the support; Check the end face absolute altitude and the horizontal level of the crane girder on other all brackets except that second bracket, level measurement is a benchmark with the absolute altitude datum line of step in 1., and the measurement of horizontal level is forward sight, backsight benchmark with the apophysis directrix on first bracket, the 4th bracket still;
6.Support and measuring instrument transfer are installed on the 3rd bracket; Through using measuring instrument 5 aerological measurements on the support; Check the end face absolute altitude and the horizontal level of the crane girder (7) on second bracket (1-2); The end face level measurement is a benchmark with the aerological measurement absolute altitude benchmark (10) of step in 1., and the measurement of horizontal level is forward sight, backsight benchmark with the apophysis directrix on first bracket (1-1), the 4th bracket (1-4) still.
2. crane girder construction aerological measurement method according to claim 1, it is characterized in that: said first bracket and the 4th bracket are positioned at the outermost of row's bracket, and second bracket is positioned at row's bracket and leans on position intermediate most.
3. crane girder construction aerological measurement method according to claim 1; It is characterized in that: said support comprises the vertical rod that places on the bracket; The vertical rod top is provided with cross bar; Cross bar one end is provided with " U " shape draw-in groove, and " U " shape draw-in groove is stuck on the H steel column edge of a wing to be fixed through bolt, and cross bar is provided with the measuring instrument stationary installation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210255063.2A CN102759350B (en) | 2012-07-23 | 2012-07-23 | High-altitude measuring method for construction of crane beams |
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| CN201210255063.2A CN102759350B (en) | 2012-07-23 | 2012-07-23 | High-altitude measuring method for construction of crane beams |
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| CN102759350A true CN102759350A (en) | 2012-10-31 |
| CN102759350B CN102759350B (en) | 2014-09-10 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109780969A (en) * | 2019-01-29 | 2019-05-21 | 中国五冶集团有限公司 | Measurement method when crane beam adjusts |
| CN111780733A (en) * | 2020-07-15 | 2020-10-16 | 中国二十二冶集团有限公司 | Method for measuring levelness and verticality of crane beam |
| CN112609032A (en) * | 2020-11-30 | 2021-04-06 | 上海宝冶冶金工程有限公司 | Method for replacing crane beam of casting house |
| CN115096256A (en) * | 2022-06-20 | 2022-09-23 | 北京东土科技股份有限公司 | Tower crane height detection method and device, computing equipment and storage medium |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109780969A (en) * | 2019-01-29 | 2019-05-21 | 中国五冶集团有限公司 | Measurement method when crane beam adjusts |
| CN111780733A (en) * | 2020-07-15 | 2020-10-16 | 中国二十二冶集团有限公司 | Method for measuring levelness and verticality of crane beam |
| CN112609032A (en) * | 2020-11-30 | 2021-04-06 | 上海宝冶冶金工程有限公司 | Method for replacing crane beam of casting house |
| CN115096256A (en) * | 2022-06-20 | 2022-09-23 | 北京东土科技股份有限公司 | Tower crane height detection method and device, computing equipment and storage medium |
| CN115096256B (en) * | 2022-06-20 | 2024-06-07 | 北京东土科技股份有限公司 | Tower crane height detection method and device, computing equipment and storage medium |
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| CN102759350B (en) | 2014-09-10 |
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