CN102953553B - Method for mounting large-span pipe truss by using boom luffing mechanism - Google Patents
Method for mounting large-span pipe truss by using boom luffing mechanism Download PDFInfo
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- CN102953553B CN102953553B CN201210458883.1A CN201210458883A CN102953553B CN 102953553 B CN102953553 B CN 102953553B CN 201210458883 A CN201210458883 A CN 201210458883A CN 102953553 B CN102953553 B CN 102953553B
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000009434 installation Methods 0.000 claims abstract description 11
- 238000003466 welding Methods 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 238000003032 molecular docking Methods 0.000 claims description 7
- 230000009977 dual effect Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 8
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 238000004364 calculation method Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 2
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Abstract
A method for mounting a large-span pipe truss by using an arm support luffing mechanism comprises the following steps: firstly, by calculating the span of the truss and the bearing capacity of a rod piece, the whole truss can be hoisted in 3 sections, namely, a ground section at two sides and a high-altitude section in the middle; pre-assembling the trusses before hoisting; respectively calculating the tension of the steel rope when the edge point A is positioned at an ideal position and an installation allowance position is reserved under the action of self weight of the landed sections on the two sides, wherein under the two conditions, the truss rod piece has no over-stress condition; calculating displacement values of C, D at two ends of the middle section under the hoisting condition of the crane, and adjusting the positions of the rope binding points to ensure that the displacement of the two points is less than or equal to 0.5 mm; fifthly, the support of the landing point can bear additional pressure during construction after calculation. The invention not only can reduce the construction cost, but also can ensure that the middle closure segment is smoothly positioned during installation, thereby providing guarantee for the quality of a high-altitude welding port.
Description
Technical field:
The invention belongs to a kind of mounting method of steel building, particularly a kind of method utilizing luffing range of cantilever support mechanism to carry out Node In Large-span Pipe Truss installation.
Background technology:
The method that large span console mode a truss adopts is by truss sections mostly, arranges prop at interface, and segmentation winches to overhead connection assembling.This mounting method precision easily ensures, handling safety, but for the larger engineering of area, prop expense is too high, to reduce prop expense, then needs prop to reuse, repeatedly removes and install during construction.But for the situation that fabricating yard soil property is more weak, prop basis expense is high, and not only comprehensive cost is high, and affects construction speed and construction quality.
Summary of the invention
Object of the present invention is just to overcome above-mentioned the deficiencies in the prior art, and a kind of method utilizing luffing range of cantilever support mechanism to carry out Node In Large-span Pipe Truss installation is provided, the method can not only reduce construction costs, and when can ensure to install, middle closure segment is in place smoothly, for overhead welding mouth quality is given security.
As above conceive, technical scheme of the present invention is: a kind of method utilizing luffing range of cantilever support mechanism to carry out Node In Large-span Pipe Truss installation, is characterized in that: comprise the steps:
Utilize luffing range of cantilever support mechanism to carry out a method for Node In Large-span Pipe Truss installation, it is characterized in that: concrete steps are:
1. on ground, the docking port place of three sections of truss is increased solid welding before installing and determine otic placode, wedge and docking junction plate;
2. install the two ends sections of landing with crane, and install interim jib fixed adjustment device and carry out temporary fixed to the section of landing, the section of landing main couple bearing is connected in hinged way with pulling between frame bottom; Described jib fixed adjustment device comprises assembly pulley, safety line, Chain block, balancing weight and pulls frame; Assembly pulley is all connected with the top of pulling frame with one end of safety line, and assembly pulley is connected with balancing weight with the other end of safety line; The top of pulling frame is connected with fixing tightwire, and the bottom of pulling frame is hinged with the section of landing main couple bearing; Chain block one end is connected with assembly pulley, and the other end is connected with balancing weight;
3. measure and determine the high-altitude coordinate position of the two ends section of landing; By using the pulling force of steel cable in jib fixed adjustment device, the coordinate position of the adjustment two ends section of landing, makes interlude be 3 ~ 5mm with regard to the surplus that the every side of bit space is reserved, carries out adequate preparation for interlude is in place smoothly;
4. by the both sides section of landing respectively near end points, draw and establish cable wind rope, the level angle of adjustment truss, and fixing;
5. according to length and the rigidity of interlude, bicycle or dual stage is selected to lift lifting interlude;
6. after interlude hoisted in position to basic accurate location, the both sides section of landing truss is made to carry out location, accurate high-altitude by the angle of jib fixed adjustment device, by wedge, inching is carried out to interlude height, after height and horizontal level all adjust to ideal position, connect the fixing otic placode of two sections of tubular truss, overhead connection completes, butt welding mouth weld seam.
Above-mentioned wedge is welded on tubular truss chord member top, and wedge is welded with wedge ring.
The present invention installs the prop expense of Large Span Spatial Truss under can being reduced in the site condition of soil property weakness, can not only reduce construction costs, and when can ensure to install, middle closure segment is in place smoothly, for overhead welding mouth quality is given security.
Accompanying drawing illustrates:
Fig. 1 is tubular truss stepwise schematic views;
Fig. 2 is that the section of landing installs calculation diagram (dotted line is take-up device);
Fig. 3 is that interlude installs calculation diagram;
Fig. 4 is the front view of fixing otic placode scheme of installation;
Fig. 5 is the top view of Fig. 4;
Fig. 6 is the structural representation of wedge;
Fig. 7 is the sectional drawing of the A-A of Fig. 6;
Fig. 8 is the schematic diagram of jib fixed adjustment device;
Fig. 9 is the A portion enlarged drawing of Fig. 8;
Figure 10 is the B portion enlarged drawing of Fig. 8.
Figure 11 is the fixing schematic diagram of truss cable wind rope;
Figure 12 is sky docking operation figure.
Detailed description of the invention:
Utilize luffing range of cantilever support mechanism to carry out a method for Node In Large-span Pipe Truss installation, comprise the steps:
1. by calculating truss span and load bearing capability of a member, whole truss structure can be divided 3 sections of liftings and the both sides section of landing a, b, middle high dead band c; (as shown in Figure 1)
2. truss had all carried out assembled in advance before lifting;
3. the calculated both sides section of landing, under Gravitative Loads, makes edge point A be positioned at ideal position and reserve the pulling force at steel cable place when installing residue position, and in both cases, truss member is all without overstressing situation respectively; (as shown in Figure 2)
4. the horizontal movement value of calculated interlude two-end-point C, D under crane lifting operating mode and vertical displacement value e, f, and the position of adjustment tied rope point, make this 2 displacement≤0.5mm; (as shown in Figure 3)
5. additonal pressure when pick-up point bearing can bear construction is confirmed as calculated.
Concrete steps of the present invention are as follows:
1, on ground, the docking port place of three sections of tubular truss 1,2 is increased weldering docking junction plate 3, fixing otic placode 4, composition backing 5 (being fixed on the section of landing in advance) and wedge 7 before installing, so that location, high-altitude (shown in Fig. 4,5);
2, with crane, the two ends sections of landing is installed, and interim luffing range of cantilever support fixed adjustment device is installed carries out temporary fixed to the section of landing, the section of landing and being connected in hinged way between support bar with bearing; (as shown in Figure 8,9, 10)
3, measure and determine the high-altitude coordinate position of the two ends section of landing.By using the pulling force of steel cable in jib fixed adjustment device, the coordinate position of adjustment two ends canned paragraph, makes interlude reserve certain surplus 3 ~ 5mm with regard to the every side of bit space, carries out adequate preparation for interlude is in place smoothly; (as shown in Figure 2)
4, by the both sides section of landing respectively near end points, draw and establish cable wind rope, the level angle of adjustment truss, and fixing; (as shown in figure 11)
5, according to length and the rigidity of interlude, bicycle or dual stage is selected to lift lifting interlude;
6, after interlude hoisted in position to basic accurate location, both sides canned paragraph truss is made to carry out location, accurate high-altitude by the angle of luffing range of cantilever support institutional adjustment fixed adjustment device, by wedge, inching is carried out to interlude height, after height and horizontal level all adjust to ideal position, connect the fixing otic placode of two sections of tubular truss, overhead connection completes, butt welding mouth weld seam g.(as shown in figure 12)
Above-mentioned wedge 7 is welded on tubular truss chord member 8,9 top, wedge is welded with wedge ring 6 (as shown in Figure 6,7).
Above-mentioned jib fixed adjustment device comprises assembly pulley 10, safety line 11, Chain block 12, balancing weight 13 and pulls frame 14.Assembly pulley is all connected with the top of pulling frame with one end of safety line, and assembly pulley is connected with balancing weight with the other end of safety line; The top of pulling frame is connected with fixing tightwire 15, and the bottom of pulling frame is hinged by articulated link chain 16 with the section of landing main couple a, b bearing; Chain block 12 one end is connected with assembly pulley, and the other end is connected with balancing weight.
The method is by application luffing range of cantilever support mechanism as adjusting device, applies external force come adjusting play to truss interface end points place, sets up to connect the servicing unit such as otic placode, voussoir, operating platform and carry out high-altitude and fix, dock.
Claims (2)
1. utilize luffing range of cantilever support mechanism to carry out a method for Node In Large-span Pipe Truss installation, it is characterized in that: concrete steps are:
1. on ground, the docking port place of three sections of truss is increased solid welding before installing and determine otic placode, wedge and docking junction plate;
2. install the two ends sections of landing with crane, and install interim jib fixed adjustment device and carry out temporary fixed to the section of landing, the section of landing main couple bearing is connected in hinged way with pulling between frame bottom; Described jib fixed adjustment device comprises assembly pulley, safety line, Chain block, balancing weight and pulls frame; Assembly pulley is all connected with the top of pulling frame with one end of safety line, and assembly pulley is connected with balancing weight with the other end of safety line; The top of pulling frame is connected with fixing tightwire, and the bottom of pulling frame is hinged with the section of landing main couple bearing; Chain block one end is connected with assembly pulley, and the other end is connected with balancing weight;
3. measure and determine the high-altitude coordinate position of the two ends section of landing; By using the pulling force of steel cable in jib fixed adjustment device, the coordinate position of the adjustment two ends section of landing, makes interlude be 3 ~ 5mm with regard to the surplus that the every side of bit space is reserved, carries out adequate preparation for interlude is in place smoothly;
4. by the both sides section of landing respectively near end points, draw and establish cable wind rope, the level angle of adjustment truss, and fixing;
5. according to length and the rigidity of interlude, bicycle or dual stage is selected to lift lifting interlude;
6. after interlude hoisted in position to basic accurate location, the both sides section of landing truss is made to carry out location, accurate high-altitude by the angle of jib fixed adjustment device, by wedge, inching is carried out to interlude height, after height and horizontal level all adjust to ideal position, connect the fixing otic placode of two sections of tubular truss, overhead connection completes, butt welding mouth weld seam.
2. a kind of method utilizing luffing range of cantilever support mechanism to carry out Node In Large-span Pipe Truss installation according to claim 1, is characterized in that: above-mentioned wedge is welded on tubular truss chord member top, and wedge is welded with wedge ring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210458883.1A CN102953553B (en) | 2012-11-14 | 2012-11-14 | Method for mounting large-span pipe truss by using boom luffing mechanism |
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| CN201210458883.1A CN102953553B (en) | 2012-11-14 | 2012-11-14 | Method for mounting large-span pipe truss by using boom luffing mechanism |
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| CN102953553B true CN102953553B (en) | 2015-04-15 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057363B (en) * | 2018-07-27 | 2021-02-05 | 浙江精工钢结构集团有限公司 | Tower type sliding support frame and construction method of large-span semicircular pipe truss structure |
| CN109138446A (en) * | 2018-09-30 | 2019-01-04 | 中建七局第二建筑有限公司 | A kind of Node In Large-span Pipe Truss hanging method |
| CN112878698B (en) * | 2019-11-29 | 2022-12-09 | 中冶(上海)钢结构科技有限公司 | Construction method for separately installing pipe truss and steel casting and sliding for aligning |
| CN111364622A (en) * | 2020-04-08 | 2020-07-03 | 五冶集团上海有限公司 | Construction method of long-span arched net rack strip-shaped building |
| CN111794529A (en) * | 2020-07-15 | 2020-10-20 | 沈阳科维润工程技术有限公司 | Modular construction hoisting method for arch type space pipe truss steel structure system |
| CN112458917B (en) * | 2020-11-30 | 2022-06-17 | 中铁大桥局第七工程有限公司 | Truss sheet type closure construction method for truss arch bridge |
| CN113982284A (en) * | 2021-10-28 | 2022-01-28 | 中铁三局集团建筑安装工程有限公司 | Installation method of large-span special-shaped steel structure toll booth |
| CN115155069A (en) * | 2021-12-31 | 2022-10-11 | 北京中冶设备研究设计总院有限公司 | Installation method of arched tower of large-scale high-altitude swing |
| CN114517586A (en) * | 2022-03-10 | 2022-05-20 | 安徽伟宏钢结构集团股份有限公司 | Method for adjusting position deviation in steel structure lifting process |
| CN115325271A (en) * | 2022-07-15 | 2022-11-11 | 海洋石油工程股份有限公司 | A new technology of large-span catheter insertion type final assembly |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1978801A (en) * | 2005-12-06 | 2007-06-13 | 蒋振彦 | Super-span steel skew arch construction method |
| CN101586400A (en) * | 2008-05-22 | 2009-11-25 | 中国十五冶金建设有限公司 | Blocking partition adding type lift installation method of net rack |
| CN201826541U (en) * | 2010-07-13 | 2011-05-11 | 中冶天工上海十三冶建设有限公司 | Detachable reinforcing steel processing shed |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2882541B2 (en) * | 1990-08-01 | 1999-04-12 | 東急建設株式会社 | A method of mounting a lifting device and a method of joining frame members in a frame material lift-up method |
| JP2007321534A (en) * | 2006-06-05 | 2007-12-13 | Takenaka Komuten Co Ltd | Roof construction method |
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2012
- 2012-11-14 CN CN201210458883.1A patent/CN102953553B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1978801A (en) * | 2005-12-06 | 2007-06-13 | 蒋振彦 | Super-span steel skew arch construction method |
| CN101586400A (en) * | 2008-05-22 | 2009-11-25 | 中国十五冶金建设有限公司 | Blocking partition adding type lift installation method of net rack |
| CN201826541U (en) * | 2010-07-13 | 2011-05-11 | 中冶天工上海十三冶建设有限公司 | Detachable reinforcing steel processing shed |
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