CN102759350B - High-altitude measuring method for construction of crane beams - Google Patents
High-altitude measuring method for construction of crane beams Download PDFInfo
- Publication number
- CN102759350B CN102759350B CN201210255063.2A CN201210255063A CN102759350B CN 102759350 B CN102759350 B CN 102759350B CN 201210255063 A CN201210255063 A CN 201210255063A CN 102759350 B CN102759350 B CN 102759350B
- Authority
- CN
- China
- Prior art keywords
- bracket
- measurement
- crane girder
- measuring instrument
- absolute altitude
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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 About Construction Technology of Steel Configuration 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, as the super wide aluminium alloy plate processing of first high-performance of China factory, is state key project financing.Approximately 120,000 square metres of this project occupation of land areas, approximately 1.8 ten thousand tons of steel using amounts, the long 658m in workshop, by forming between 6 standdle carriers, has 30 drivings in workshop, and driving restarts weight 200t most.Whether crane girder installation progress arrives design and code requirement, is one of key point of this engineering.
After bracket and steel column installation, carry out measurement unwrapping wire, lifting, the position correction of crane girder, adopted ground survey in the past, instrument stand is located on a middle steel-column foundation, taking original axis on former and later two steel-column foundations as horizontal reference, measure taking the absolute altitude datum line established on a certain fixture as the high benchmark of mark.Existing level measurement method is: by absolute altitude reference point, absolute altitude is caused to every steel column bottom, at the method measurement bracket by manually draw chi on every bracket, the absolute altitude of crane girder.Crane girder will be determined in the setting-out of bracket upper surface the position of crane girder axis before installing, one people observes measuring instrument, and people setting-out on bracket, because ground survey does not observe bracket upper surface, establish an object of reference and stretch out from bracket edge, determine setting-out position by observation object of reference.Crane girder will be checked its position and the measurement of end face absolute altitude after installing, equally, because ground survey sight line is bad, object of reference also will be set on crane girder, if observation station is a lot, object of reference all will be established in everywhere, makes that measuring process is complicated, not only efficiency is low but also the larger error of easy generation.In addition, the on-the-spot place of this engineering construction is higher than steel-column foundation 1 ~ 2m, also there is a large amount of mounds in working-yard, between basis and basis, intervisibility is in bad order, and 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 specification and allow requirement.How to overcome the defect of ground survey, the faster and better unwrapping wire completing before crane girder is installed, correction after installation, to detect be one of the emphasis of this engineering construction and difficult point.
Summary of the invention
The object of the present invention is to provide one to measure in high-altitude, be not subject to the crane girder construction aerological measurement method of state of ground restriction.
To achieve these goals, crane girder construction aerological measurement method of the present invention, the measurement that crane girder is installed for more than four bracket of a row, is characterized in that: it comprises the following steps:
1. use measuring instrument ground survey, required datum line while drawing aerological measurement, be specially: the apophysis directrix of drawing crane girder on the first bracket, the second bracket, the 4th bracket, on the first bracket, draw absolute altitude datum line, absolute altitude datum line is higher than crane girder end face absolute altitude; The first bracket and the 4th bracket are positioned at the outside of the second bracket and the 3rd bracket;
2. on the second bracket, set up measuring instrument with support;
3. measure taking the apophysis directrix on the first bracket, the 4th bracket as forward sight, backsight benchmark, by using measuring instrument 5 aerological measurements on support, draw the crane girder apophysis directrix on other all brackets except the first bracket, the second bracket, the 4th bracket;
4. removal bracket and measuring instrument, aims at apophysis directrix lifting crane girder;
5. after crane girder rigging out, repeating step 2., again by using measuring instrument 5 aerological measurements on support, check end face absolute altitude and the horizontal level of the crane girder on other all brackets except the second bracket, taking step, the absolute altitude datum line in is 1. as benchmark in level measurement, and the measurement of horizontal level is still taking the apophysis directrix on the first bracket, the 4th bracket as forward sight, backsight benchmark;
6. support and measuring instrument transfer are installed on the 3rd bracket, by using measuring instrument 5 aerological measurements on support, check end face absolute altitude and the horizontal level of the crane girder 7 on the second bracket 1-2, taking step, the aerological measurement absolute altitude benchmark 10 in is 1. as benchmark in end face level measurement, and the measurement of horizontal level is still taking the apophysis directrix on the first bracket 1-1, the 4th bracket 1-4 as forward sight, backsight benchmark.
The invention has the beneficial effects as follows:
1. measure in high-altitude, not limited by state of ground;
2. measure sight line good, work efficiency is high;
3. directly observe crane girder, do not need object of reference.
Brief description of the drawings
Fig. 1 is the schematic diagram of the present invention in the time implementing.
Fig. 2 is the local vertical view amplifying of Fig. 1 (omitting the structure below bracket).
Fig. 3 is the use schematic diagram of the support that relates in the present invention.
In figure: 1-bracket, the upper steel column of 2-, 3-vertical rod, 4-cross bar, 5-measuring instrument, steel column under 6-, 7-crane girder, 8-steel-column foundation, 9-ground survey absolute altitude benchmark, 10-aerological measurement absolute altitude benchmark, 11-longitudinal axis, 12-apophysis directrix; 1-1: the first bracket; 1-2: the second bracket; 1-3: the 3rd bracket; 1-4: the 4th bracket; 1-5: Wuniu leg.
Embodiment
As shown in Figure 1, on steel-column foundation 8, be decorated with axis (datum line when ground survey in surface level) in length and breadth, wherein parallel with crane girder 7 axis is called to longitudinal axis 11, and ground survey absolute altitude benchmark 9 is decorated with in the position (on factory building wall) that a certain fixture is convenient to observe at the construction field (site).Steel column 6, bracket 1 and upper steel column 2 from steel-column foundation 8 is successively up.Before crane girder 7 is installed, lower steel column 6, bracket 1 and upper 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, to adjust the end face absolute altitude of crane girder 7 by parallels.Next enter measurement, the installation procedure of crane girder 7, the step that the inventive method relates to.
Crane girder construction aerological measurement method, the measurement that crane girder is installed for more than four bracket of a row, comprises the following steps:
1. use measuring instrument 5 ground surveys (method of ground survey as described in the background art), required datum line while drawing aerological measurement, be specially: on the first bracket 1-1, the second bracket 1-2, the 4th bracket 1-4, draw the apophysis directrix 12(of crane girder 7 taking longitudinal axis 11 as benchmark, or to be offset certain distance from longitudinal axis 11 be benchmark for ease of observing), on the first bracket 1-1, draw aerological measurement absolute altitude benchmark 10(taking ground survey absolute altitude benchmark 9 as benchmark), 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 be only greater than surveyed total length 1/2nd)
2. on the second bracket 1-2, set up measuring instrument with support;
3. measure taking the apophysis directrix 12 on the first bracket 1-1, the 4th bracket 1-4 as forward sight, backsight benchmark, by using measuring instrument 5 aerological measurements on support, draw the crane girder apophysis directrix 12 on other all brackets except the first bracket 1-1, the second bracket 1-2, the 4th bracket four 1-4;
4. removal bracket and measuring instrument 5, the apophysis directrix 12 aiming on each bracket lifts crane girder 7;
5. after crane girder 7 rigging outs, repeating step 2., again by using measuring instrument 5 aerological measurements on support, check end face absolute altitude and the horizontal level of the crane girder 7 on other all brackets except the second bracket 1-2, taking step, the aerological measurement absolute altitude benchmark 10 in is 1. as benchmark in end face level measurement, and the measurement of horizontal level is taking the apophysis directrix 12 on the first bracket 1-1, the 4th bracket 1-4 as forward sight, backsight benchmark.(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, by using measuring instrument 5 aerological measurements on support, check end face absolute altitude and the horizontal level of the crane girder 7 on the second bracket 1-2, taking step, the aerological measurement absolute altitude benchmark 10 in is 1. as benchmark in end face level measurement, and the measurement of horizontal level is still taking the apophysis directrix 12 on the first bracket 1-1, the 4th bracket 1-4 as forward sight, backsight benchmark.
If the position that crane girder 7 is installed in the time checking measurement has deviation to need to adjust, a people observes measuring instrument 5 and commands fitting operation personnel to adjust, until meet installation requirement.Measuring instrument 5 is the construction line-putting common instrument.Can complete the measurement of axis and absolute altitude with total powerstation, or survey axis, high with spirit-leveling instrument mark with transit.
When row's bracket number is when more (more than 5), in order to make measurand be easier to observation, forward sight, backsight benchmark should be located to outermost, measuring instrument 5 is erected at centre position, be the two ends that above-mentioned the first bracket 1-1, the 4th bracket 1-4 are positioned at row's bracket, the second bracket 1-2 is positioned at row's bracket by middle position.
As shown in Figure 2, above-mentioned support comprises the vertical rod 3 being placed on bracket 1, vertical rod 3 tops are provided with cross bar 4, cross bar 4 one end are provided with " U " shape draw-in groove, " U " shape draw-in groove is stuck in H type and is fixed by bolt on steel column 2 edges of a wing, cross bar 4 be provided with measuring instrument 5 stationary installations (as with preformed hole or the mounting groove of measuring instrument 5 adaptations).
Vertical rod 3 and cross bar 4 are all used section steel manufacture, for the ease of carrying, deposit, vertical rod 3 and cross bar 4 are made to independently two bars, connect with bolt.
In order to regulate position, left and right, the position being connected with vertical rod 3 on cross bar 4 is provided with horizontal concrete chute, and bolt connects through chute.
In order to regulate height, the position being connected with cross bar in vertical rod 3 is provided with vertical chute, and bolt connects through chute.
The measurement that adopts 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 completed in high-altitude, efficiency is high, and sight line is good, do not exist because of be difficult to observation have to turning point measure situation., bracket number long at whole factory building workshop crane girder fore-and-aft distance has all the more advantage in the situation that of many.
Claims (3)
1. crane girder construction aerological measurement method, is characterized in that: it comprises the following steps:
1. use measuring instrument ground survey, required datum line while drawing aerological measurement, be specially: the apophysis directrix of drawing crane girder on the first bracket, the second bracket, the 4th bracket, on the first bracket, draw absolute altitude datum line, absolute altitude datum line is higher than crane girder end face absolute altitude; The first bracket is positioned at an outside of the second bracket and the 3rd bracket, and the 4th bracket is positioned at another outside of the second bracket and the 3rd bracket;
2. on the second bracket, set up measuring instrument with support;
3. carry out the measurement of horizontal level taking the apophysis directrix on the first bracket, the 4th bracket as forward sight, backsight benchmark, by using measuring instrument (5) aerological measurement on support, draw the crane girder apophysis directrix on other all brackets except the first bracket, the second bracket, the 4th bracket;
4. removal bracket and measuring instrument, aims at apophysis directrix lifting crane girder;
5. after crane girder rigging out, repeating step 2., again by using the measuring instrument aerological measurement on support, check end face absolute altitude and the horizontal level of the crane girder on other all brackets except the second bracket, taking step, the absolute altitude datum line in is 1. as benchmark in level measurement, and the measurement of horizontal level is still taking the apophysis directrix on the first bracket, the 4th bracket as forward sight, backsight benchmark;
6. support and measuring instrument transfer are installed on the 3rd bracket, by using measuring instrument (5) aerological measurement on support, check end face absolute altitude and the horizontal level of the crane girder (7) on the second bracket (1-2), taking step, the absolute altitude datum line (10) in is 1. as benchmark in end face level measurement, and the measurement of horizontal level is still taking the apophysis directrix on the first bracket (1-1), the 4th bracket (1-4) as forward sight, backsight benchmark.
2. crane girder construction aerological measurement method according to claim 1, it is characterized in that: described the first bracket is positioned at an outermost of row's bracket, described the 4th bracket is positioned at another outermost of row's bracket, and the second bracket is positioned at row's bracket by middle position.
3. crane girder construction aerological measurement method according to claim 1, it is characterized in that: described support comprises the vertical rod being placed on bracket, vertical rod top is provided with cross bar, cross bar one end is provided with " U " shape draw-in groove, " U " shape draw-in groove is stuck on the H steel column edge of a wing and is fixed by bolt, and cross bar is provided with measuring instrument stationary installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210255063.2A CN102759350B (en) | 2012-07-23 | 2012-07-23 | High-altitude measuring method for construction of crane beams |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210255063.2A CN102759350B (en) | 2012-07-23 | 2012-07-23 | High-altitude measuring method for construction of crane beams |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102759350A CN102759350A (en) | 2012-10-31 |
| CN102759350B true CN102759350B (en) | 2014-09-10 |
Family
ID=47053894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210255063.2A Expired - Fee Related CN102759350B (en) | 2012-07-23 | 2012-07-23 | High-altitude measuring method for construction of crane beams |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102759350B (en) |
Families Citing this family (3)
| 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 |
| CN111780733B (en) * | 2020-07-15 | 2022-01-07 | 中国二十二冶集团有限公司 | Method for measuring levelness and verticality of crane beam |
| CN112609032B (en) * | 2020-11-30 | 2022-09-27 | 上海宝冶冶金工程有限公司 | Method for replacing crane beam of casting house |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7690161B2 (en) * | 2007-04-09 | 2010-04-06 | Load Rite Trailers, Inc. | Structural member for vehicle |
| CN101915553B (en) * | 2010-08-31 | 2011-11-30 | 武汉一冶钢结构有限责任公司 | Simple precamber measuring method in steel box girder construction |
| CN102259794B (en) * | 2011-07-21 | 2013-03-27 | 长江航运规划设计院 | Method for installing overall combined type crane beam |
| CN102434003B (en) * | 2011-08-29 | 2014-04-23 | 山东寿光第一建筑有限公司 | Heavy battened steel column construction process |
-
2012
- 2012-07-23 CN CN201210255063.2A patent/CN102759350B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102759350A (en) | 2012-10-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105003080B (en) | A kind of fan-shaped steel building construction technology | |
| CN103291076B (en) | Multilayer steel truss fragmented reverse hoisting construction method in arc-shaped frame | |
| CN110219326B (en) | Reverse construction method one-column one-pile underwater verticality adjusting construction process | |
| CN210238595U (en) | One-column one-pile underwater verticality adjusting construction device by reverse construction method | |
| CN102759350B (en) | High-altitude measuring method for construction of crane beams | |
| CN105220769A (en) | Large area bolt-ball net frame integral top lifting construction method | |
| CN104567670A (en) | Mounting and detection method of multi-roll mill | |
| CN203824548U (en) | Bridge structure concrete surface observation area measuring instrument | |
| CN106223623A (en) | Steel construction box arched roof truss installation method | |
| CN106193603A (en) | A kind of method ensureing large scale and concrete structural support system safe construction of encorbelmenting | |
| CN210507148U (en) | Positioning and adjusting device for main tower cable guide pipe of cable-stayed bridge | |
| CN103344214B (en) | 1.6-degree parabolic extralarge pier measuring and pier body linear control method | |
| CN110000218B (en) | Installation and construction method of six continuous rolling mill units of pipe rolling line | |
| CN103669957B (en) | V-arrangement framework construction method for hanging | |
| CN203795435U (en) | Diagonal bracing reinforcing structure | |
| CN203256744U (en) | Device for correcting perpendicularity of concrete-filled steel tubular column through reverse construction method | |
| CN102983517A (en) | Integral installation device for transformer test bench | |
| CN203499267U (en) | Construction device for large-area concrete surface | |
| CN202693015U (en) | Simple support for high-altitude measurement during crane beam construction | |
| CN203594058U (en) | Inclined transmission tower rectification device with single-spliced angle steel as main material | |
| CN109235484A (en) | Boiler steel frame mounting process | |
| CN204689525U (en) | A kind of equipment jacking apparatus being convenient to measure | |
| CN104060838A (en) | Grouping and air-pairing installation method for corridor | |
| CN210622423U (en) | Welded connection's hard crossbeam of contact net | |
| CN205954497U (en) | Large -span continuous beam bridge bridge pier in deep water mound top bracket pre -compaction construction structures |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20210723 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |