CN102427204A - Installation method for 1000kV alternating-current substation structure - Google Patents
Installation method for 1000kV alternating-current substation structure Download PDFInfo
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- 238000009434 installation Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 44
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 58
- 239000010959 steel Substances 0.000 claims abstract description 58
- 238000010276 construction Methods 0.000 claims abstract description 23
- 244000261422 Lysimachia clethroides Species 0.000 claims description 52
- 238000007689 inspection Methods 0.000 claims description 10
- 239000000725 suspension Substances 0.000 claims description 9
- 238000013461 design Methods 0.000 claims description 4
- 241000282326 Felis catus Species 0.000 claims description 3
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- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000011900 installation process Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
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Abstract
The invention discloses an installation method for a 1000kV alternating-current substation structure. In the entire installation process of the structure, the first to third sections of structure columns are erected firstly, the fourth sections of the structure columns are assembled on the ground, the fourth sections are hoisted, the fifth to eighth sections of the structure columns are assembled on the ground at the same time, transverse beams are assembled on the ground, the fifth to eighth sections of the structure columns are hoisted and finally the transverse beams are hoisted. By adopting the installation method, since the structure columns and the steel transverse beams are assembled and installed on the ground, the work done above the ground is greatly reduced, the safety risk is decreased, the number of needed personnel for working high above the ground is greatly reduced, the labor cost is low, the construction period is short, the installation accuracy is high, the steel transverse beams are fixed in position and are accurately controlled, and the economic benefit and the social benefit are very great.
Description
Technical field
The present invention relates to power transmission and transformation power line construction technology, relate in particular to a kind of work high above the ground, raising work efficiency, 1000kV AC Substation framework installation method of reduction of erection time of reducing.
Background technology
The construction of domestic 1000kV ultra high voltage is in the conceptual phase of starting, and frame construction is complicated, all is steel-tube construction; Rod member is heavier, and it is very heavy that framework is installed gross weight, and overall process is installed needs plant equipment to cooperate; The mounting technique difficulty is big, and installation risk is big, estimates that the construction period is long; Manpower and materials are expensive big, totally have high input between installation period.
The mounting technique difficulty is big, and extra-high-voltage alternating current proving ground framework is installed the highest setting height(from bottom) up to more than the 76m, and the biggest lifting capacity is 29.3 tons, and maximum span reaches 58m.Its setting height(from bottom), the biggest lifting capacity, maximum span are all considerably beyond any one substation project in the past.Particularly extra-high-voltage alternating current test 1000kV framework is installed in domestic still belonging to the first time, and does not have ripe experience to borrow to recommend.The difficult point that the 1000kV framework is installed also has that installation accuracy is wayward, the gooseneck fix in position is difficult to control.
Summary of the invention
The objective of the invention is to solve the problem that exists in the above-mentioned background technology; Propose a kind of short construction period, assembling of framework post and gooseneck are assembled in ground and carry out installation exercise, have significantly reduced work high above the ground; Reduced security risk; The work high above the ground personnel that need significantly reduce, and human cost is low, the 1000kV AC Substation framework installation method that installation accuracy is high, the gooseneck fix in position is accurately controlled.
For realizing above-mentioned purpose, technical scheme of the present invention is following:
A kind of 1000kV AC Substation framework installation method comprises following steps:
1., preparation of construction: the space structure of design 1000kV AC Substation framework; Framework is decomposed into many framework posts and many goosenecks; Every framework post upwards is decomposed into the 1st joint to the 8th joint from ground, calculate height, the suspension column root of every framework post and open the cross dimensions of distance and gooseneck and the span of gooseneck;
2., the upright framework post of group: adopt crane to divide the system of solutions to found the framework post, assemble in flakes respectively on the ground on the two sides that the every joint framework post that decomposes is relative, then two is erected, and sheet is assembled into cage or joint; Single-unit post or more piece post are installed successively, upright until the group of accomplishing the framework post;
3., assembling gooseneck: the beam two sides are assembled into the net sheet, and both sides veil sheet is erected, again mounting rail bottom surface and end face horizontal bars and diagonal web member; Accomplish the assembling of elementary section gooseneck; In this way, assemble successively from the middle to both ends, until girder steel is assembled into integral body;
4., lifting gooseneck: select 250 tons or above tonnage crawler crane for use; Earlier gooseneck is at the uniform velocity sling to the 5-6m height; Adopt the auxiliary simultaneously bearing diagonal of installing of two 25 tons of cranes at the gooseneck two ends; After intact gooseneck is continued to sling to the above 0.5m～1.0m of setting height(from bottom), slowly fall in place fixing again.Girder steel in place fixing after, install and fix bearing diagonal again with steel is walked guidance tape, until the installation of completion framework.
In technique scheme, the whole erection sequence in detail of framework is: the 1-3 joint of the upright framework post of group, the 4th joint of ground assembling framework post; Lift the 4th and save the 5-8 joint of assembling the framework post simultaneously and on ground; Ground assembling crossbeam, the 5-8 joint of lifting framework post lifts crossbeam at last.
In technique scheme, the concrete grammar of the upright framework post of group is:
The 1st joint of a, the upright framework post of group, the 2nd joint: the suspension column root is opened to assembling on ground in flakes on the relative two sides of 10.0m or 5.5m; To assemble the sheet installation in position of accomplishing with crane then; With crane girt and diagonal web member are adopted the mode of single-piece installation again; The sheet that has installed is connected into integral body, be assembled into the 1st joint, the 2nd joint of framework post;
B, group are found also the 3rd joint of lifting framework post: adopt the 3rd joint that founds the upright framework post of method group that the 1st of framework post saves, the 2nd joint is identical with group, and 25 tons of cranes of single-piece employing of lifting framework post, the sheet that the installation assembling is accomplished adopts 50 tons of cranes;
C, group is upright and the 4th joint of lifting framework post: processing post assembly platform earlier, uprightly be assembled into cage on ground with 25 tons of cranes again, and it is in place to save the integral hoisting of framework post with 250 tons or above tonnage crawler-type crane with the 4th at last;
The 5-8 joint of d, the upright also lifting framework post of group: be assembled into cage on ground by the 5th～8 joint sequential segment with 25 tons of cranes; Use 50 tons of cranes that it is upright then; Use 250 tons or above tonnage crawler-type crane that its multistage integral hoisting is in place at last, it is upright to accomplish framework post group.
In technique scheme,, cat ladder is fixed on the sheet during group sheet on ground, lift by crane installation with sheet.
In technique scheme, adopt the mobile jib flange to connect between the framework post post that per two joints link to each other.
In technique scheme, during the assembling gooseneck, gooseneck is divided into 5 sections successively, assembling sequence is that the 3rd section of assembling earlier assembled the 2nd, 4 section again, assembles the 1st, 5 section at last.
In technique scheme, the concrete grammar of assembling gooseneck is to assemble the 3rd section gooseneck earlier; The beam two sides are assembled into the net sheet; Relatively both sides veil sheet is erected with crane then, mounting rail bottom surface and end face link web member, wait to net sheet stable after; Remaining diagonal web member is installed again, until with the 3rd section assembled; Divide two teams and groups to carry out the symmetry assembling according to the 3rd section method, accomplish the assembling of the 2nd, 4 sections on girder steel; Press the 2nd, 4 sections assemble methods of girder steel, the assembling that symmetrical completion girder steel is the 1st, 5 sections after the assembling of whole piece beam is accomplished, is carried out the assembling quality inspection, and after quality examination was qualified, fastening bolt behind whole fastening the finishing of bolt, carried out 100% bolt installation quality inspection.
In technique scheme, the gooseneck concrete grammar of 250 tons of crawler crane lifting whole pieces is:
Before a, the lifting, try earlier to hang, during the overhead about 100mm of gooseneck, stop lifting, the scrutiny rod member situation and the curvature of having mercy on meet the requirements and can formally lift by crane;
In b, when lifting,, amount at the uniform velocity upwards promotes, when rising when winching to 5～6 meters height; Stop lifting; Adopt 2 25 tons of cranes to cooperate then the two ends bearing diagonal is installed, steel diagonal brace one end is fixed on the girder steel node, and the other end is pulled chain block with hand and hung on the steel cross bar; After installing, continue at the uniform velocity upwards to promote;
C, when the member sling height rises to the above 500mm of setting height(from bottom), top out, slowly fall, with cable wind rope control crossbeam horizontal level in length and breadth, until aiming at bolt mounting holes, when girder steel was in place, an end in place was temporarily fixed with interim construction bolt earlier; And then carry out the in place of the girder steel other end, treat that girder steel all falls behind the position, carries out the first stubborn installation of junction girder steel bolt;
After d, girder steel are in place, utilize Lever Blocks and small instruments and tools that the other end of steel diagonal brace is fixed on the framework post; After diagonal brace installs, the bolt of junction carried out twisting end install;
After e, gooseneck are in place, install and fix at last with being about to loose two joint steel aisle, girder steel two ends;
After f, the whole installations of all girder steels, all construction bolts are carried out the inspection of 100% installation quality, till whole requirements up to specification.
The present invention is at short construction period, and assembling of framework post and gooseneck are assembled into the floor mounted operation, have significantly reduced work high above the ground; Reduced security risk, because all are assembled into Ground Operation, the work high above the ground personnel that therefore need significantly reduce; Reduce human cost, reduced production cost, adopted many a plurality of scope of operations of crane to launch simultaneously; Risk is less; The integral construction quality is easy to control, task difficulty reduces significantly, and the present invention has satisfied the requirement of standardized construction fully, can be used for the standardized construction that instructs 1000kV AC Substation framework to install; For the construction of ultra high voltage experiment and demonstration engineering safety, raising work efficiency, realization environmental objective provide technical support, also for using similar construction that great reference value and directive significance is provided in domestic other ultra high voltage project from now on.
Description of drawings
Fig. 1 is the flow of installation figure of framework among the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed description.
1000kV AC Substation framework installation method comprises following steps:
1., preparation of construction: the space structure of design 1000kV AC Substation framework; Framework is decomposed into many framework posts and many goosenecks; Every framework post upwards is decomposed into the 1st joint to the 8th joint from ground; Calculate height, the suspension column root of every framework post and open the cross dimensions of distance and gooseneck and the span of gooseneck, the Work tool and the framework material requested of framework installation is provided based on calculated value; Calculate hoisting point position, lifting capacity, lifting height etc. based on the design feature of framework before going into operation, select crane and steel wire rope and suspender belt model etc. based on calculated value then, and prepare to provide framework that required Work tool and framework material requested are installed;
2., the upright framework post of group: adopt crane to divide the system of solutions to found the framework post, assemble in flakes respectively on the ground on the two sides that the every joint framework post that decomposes is relative, then two is erected, and horizontal bars is installed earlier, and diagonal web member is installed again, and sheet is assembled into cage or joint.Difference based on lifting capacity, a weighing method, crane are selected is assembled into the framework post single-unit post or more piece post respectively, and is then that it is upright; Based on selecting rubber tired crane or crawler crane highly respectively for use based on lifting capacity and lifting at last, single-unit post or more piece post are sling successively at last, and carried out flange butt joint connection, upright until the group of accomplishing the framework post;
3., assembling gooseneck: the beam two sides are assembled into the net sheet, and both sides veil sheet is erected, mounting rail bottom surface and end face horizontal bars and diagonal web member are accomplished the assembling of elementary section gooseneck again.In this way, assemble successively from the middle to both ends, until girder steel is assembled into integral body;
4., lifting gooseneck: select 250 tons or above tonnage crawler crane for use; Earlier gooseneck is at the uniform velocity sling to the 5-6m height; Adopt the auxiliary simultaneously bearing diagonal of installing of two 25 tons of cranes at the gooseneck two ends; After intact gooseneck is continued to sling to the above 0.5m～1.0m of setting height(from bottom), slowly fall in place fixing again.Girder steel in place fixing after, install and fix bearing diagonal again with steel is walked guidance tape, until the installation of completion framework.
The whole detailed erection sequence of framework is as shown in Figure 1; The 1-3 that organizes upright framework post earlier saves, and the 4th joint of ground assembling framework post lifts the 4th and saves the 5-8 joint of assembling the framework post simultaneously and on ground; Ground assembling crossbeam; The 5-8 joint of lifting framework post lifts crossbeam at last, and the concrete grammar of the upright framework post of group is:
The 1st joint of a, the upright framework post of group, the 2nd joint: the suspension column root is opened to assembling on ground in flakes on the relative two sides of 10.0m or 5.5m; To assemble the sheet installation in position of accomplishing with crane then; With crane girt and diagonal web member are adopted the mode of single-piece installation again; The sheet that has installed is connected into integral body, be assembled into the 1st joint, the 2nd joint of framework post;
B, group are found also the 3rd joint of lifting framework post: adopt the 3rd joint that founds the upright framework post of method group that the 1st of framework post saves, the 2nd joint is identical with group, and 25 tons of cranes of single-piece employing of lifting framework post, the sheet that the installation assembling is accomplished adopts 50 tons of cranes;
C, group is upright and the 4th joint of lifting framework post: processing post assembly platform earlier, uprightly be assembled into cage on ground with 25 tons of cranes again, and it is in place to save the integral hoisting of framework post with 250 tons or above tonnage crawler-type crane with the 4th at last;
The 5-8 joint of d, the upright also lifting framework post of group: be assembled into cage on ground by the 5th～8 joint sequential segment with 25 tons of cranes; Use 50 tons of cranes that it is upright then; Use 250 tons or above tonnage crawler-type crane that its multistage integral hoisting is in place at last, it is upright to accomplish framework post group.
In the practical implementation process; Group is found the framework post and also can be implemented like this: the 1st joint of a, the upright framework post of group, the 2nd joint: the suspension column root is opened to assembling on ground in flakes on the relative two sides of 10.0m or 5.5m; To assemble the sheet installation in position of accomplishing with crane then; With the mode of crane, the sheet that has installed is connected into integral body again, be assembled into the 1st joint, the 2nd joint of framework post brace and the installation of girt employing single-piece; B, group are found also the 3rd joint of lifting framework post: adopt the 3rd joint that founds the upright framework post of method group that the 1st of framework post saves, the 2nd joint is identical with group, and 25 tons of cranes of single-piece employing of lifting framework post, the sheet that the installation assembling is accomplished adopts 50 tons of cranes; The 4th joint of c, the upright also lifting framework post of group: process 3 assembly platforms respectively, uprightly be assembled into cage on ground with 25 tons of cranes earlier, with 250 tons of cranes that the 4th joint framework post integral hoisting is in place then; The 5-8 joint of d, the upright also lifting framework post of group: the 5th saves 25 tons of cranes utilizes framework post assembly platform to be assembled into cage earlier on ground; Install with 250 tons of cranes then; 6-8 saves 25 tons of cranes and is assembled into cage on ground; Use 50 tons of cranes that it is upright then, use 250 tons of cranes that its multistage integral hoisting is in place at last, the group of accomplishing the framework post is upright.It is shorter that the whole erection field material stack to overstock the time, and floor space is less relatively at the scene with the framework post of having assembled in the time or girder steel, the place seem than in the past looser in order, help reducing the transhipment of member secondary and keep the unobstructed etc. of transport routes.Be beneficial to the optimization of flow beat operation and machine heavy-duty machine equipment disposition.Help the reduction of erection time, practice thrift cost etc.
, cat ladder is fixed on the sheet during group sheet on ground, lifts by crane installation with sheet.Adopt the mobile jib flange to connect between the framework post post that per two joints link to each other.During the assembling gooseneck, gooseneck is divided into 5 sections successively, assembling sequence is that the 3rd section of assembling earlier assembled the 2nd, 4 section again, assembles the 1st, 5 section at last.
Particularly, the method for assembling gooseneck is to assemble the 3rd section gooseneck earlier; The beam two sides are assembled into the net sheet, relatively both sides veil sheet are erected with crane then, mounting rail bottom surface and end face link web member; Wait to net sheet stable after, remaining web member is installed again, until with the 3rd section assembled; Divide two teams and groups to carry out the symmetry assembling according to the 3rd section method, accomplish the assembling of the 2nd, 4 sections on girder steel; Press the 2nd, 4 sections assemble methods of girder steel, the assembling that symmetrical completion girder steel is the 1st, 5 sections after the assembling of whole piece beam is accomplished, is carried out the assembling quality inspection, and after quality examination was qualified, fastening bolt behind whole fastening the finishing of bolt, carried out 100% bolt installation quality inspection.
The gooseneck concrete grammar of 250 tons of crawler cranes lifting whole pieces is: before a, the lifting, try earlier to hang, during the overhead about 100mm of gooseneck, stop lifting, the scrutiny rod member situation and the curvature of having mercy on meet the requirements and can formally lift by crane; In b, when lifting,, amount at the uniform velocity upwards promotes, when rising when winching to 5～6m height; Stop lifting, adopt 2 25 tons of cranes to cooperate then the two ends bearing diagonal is installed, steel diagonal brace one end is fixed on the girder steel node; The other end is pulled chain block with hand and is hung on the steel cross bar, after installing, continues at the uniform velocity upwards to promote; C, when the member sling height rises to the above 500mm of setting height(from bottom), top out, slowly fall, with cable wind rope control crossbeam horizontal level in length and breadth, until aiming at bolt mounting holes, when girder steel was in place, an end in place was temporarily fixed with interim construction bolt earlier; And then carry out the in place of the girder steel other end, treat that girder steel all falls behind the position, carries out the first stubborn installation of junction girder steel bolt; After d, girder steel are in place, utilize Lever Blocks and small instruments and tools that the other end of steel diagonal brace is fixed on the framework post; After diagonal brace installs, the bolt of junction carried out twisting end install; After e, gooseneck are in place, install and fix at last with being about to loose two joint steel aisle, girder steel two ends; After f, the whole installations of all girder steels, all construction bolts are carried out the inspection of 100% installation quality, till whole requirements up to specification.
In the process of construction, adopt special framework post assembly platform and framework device for installing and adjusting; To guarantee the smooth progress of installing engineering; Improve work efficiency, the reduction of erection time, mainly make relative position and four suspension column center distances to each other after all bolts of each ring flange are installed keep constant; Since in framework post assembly platform and the framework device for installing and adjusting between all bolts apart from basic fixed, error all effectively is controlled in the permissible variation scope; Every segmented column flange bottom absolute altitude is controlled on the same absolute altitude level.In framework post single-unit, more piece post docking operation, the upright process of framework post group is very well, has reduced verification and adjusting time, has improved work efficiency.This framework device for installing and adjusting can effectively be regulated the distance between the mobile jib and mobile jib in the framework post assembling process.Framework adjusting device machining accuracy ERROR CONTROL is in the 1mm scope, and the maximal regulated scope is 0～70mm, through the quality inspection in the experimentation, can satisfy the needs of precision control.
The content that this specification is not done to describe in detail belongs to this area professional and technical personnel's known prior art.
Claims (9)
1. 1000kV AC Substation framework installation method is characterized in that comprising following steps:
1., preparation of construction: the space structure of design 1000kV AC Substation framework; Framework is decomposed into many framework posts and many goosenecks; Every framework post upwards is decomposed into the 1st joint to the 8th joint from ground, calculate height, the suspension column root of every framework post and open the cross dimensions of distance and gooseneck and the span of gooseneck;
2., the upright framework post of group: adopt crane to divide the system of solutions to found the framework post, assemble in flakes respectively on the ground on the two sides that the every joint framework post that decomposes is relative, then two is erected, and sheet is assembled into cage or joint; Single-unit post or more piece post are installed successively, upright until the group of accomplishing the framework post;
3., assembling gooseneck: the beam two sides are assembled into the net sheet, and both sides veil sheet is erected, again mounting rail bottom surface and end face horizontal bars and diagonal web member; Accomplish the assembling of elementary section gooseneck; In this way, assemble successively from the middle to both ends, until girder steel is assembled into integral body;
4., lifting gooseneck: select 250 tons or above tonnage crawler crane for use; Earlier gooseneck is at the uniform velocity sling to the 5-6m height; Adopt the auxiliary simultaneously bearing diagonal of installing of two 25 tons of cranes at the gooseneck two ends; After intact gooseneck is continued to sling to the above 0.5m～1.0m of setting height(from bottom), slowly fall in place fixing again; Girder steel in place fixing after, install and fix bearing diagonal again with steel is walked guidance tape, until the installation of completion framework.
2. 1000kV AC Substation framework installation method according to claim 1; It is characterized in that the whole erection sequence in detail of framework is: the 1-3 joint of the upright framework post of group, the 4th joint of ground assembling framework post; Lift the 4th and save the 5-8 joint of assembling the framework post simultaneously and on ground; Ground assembling crossbeam, the 5-8 joint of lifting framework post lifts crossbeam at last.
3. 1000kV AC Substation framework installation method according to claim 2 is characterized in that, the concrete grammar of the upright framework post of group is:
The 1st joint of a, the upright framework post of group, the 2nd joint: the suspension column root is opened to assembling on ground in flakes on the relative two sides of 10.0m or 5.5m; To assemble the sheet installation in position of accomplishing with crane then; With crane girt and diagonal web member are adopted the mode of single-piece installation again; The sheet that has installed is connected into integral body, be assembled into the 1st joint, the 2nd joint of framework post;
B, group are found also the 3rd joint of lifting framework post: adopt the 3rd joint that founds the upright framework post of method group that the 1st of framework post saves, the 2nd joint is identical with group, and 25 tons of cranes of single-piece employing of lifting framework post, the sheet that the installation assembling is accomplished adopts 50 tons of cranes;
C, group is upright and the 4th joint of lifting framework post: processing post assembly platform earlier, uprightly be assembled into cage on ground with 25 tons of cranes again, and it is in place to save the integral hoisting of framework post with 250 tons or above tonnage crawler-type crane with the 4th at last;
The 5-8 joint of d, the upright also lifting framework post of group: be assembled into cage on ground by the 5th～8 joint sequential segment with 25 tons of cranes; Use 50 tons of cranes that it is upright then; Use 250 tons or above tonnage crawler-type crane that its multistage integral hoisting is in place at last, it is upright to accomplish framework post group.
4. 1000kV AC Substation framework installation method according to claim 2; It is characterized in that; Organizing the concrete grammar that founds the framework post is: the 1st joint, the 2nd of a, the upright framework post of group saves: the suspension column root is opened to the relative two sides of 10.0m or 5.5m assembled on ground in flakes, will assemble the sheet installation in position of accomplishing with crane then, with crane horizontal bars and diagonal web member are adopted the mode of single-piece installation again; The sheet that has installed is connected into integral body, be assembled into the 1st joint, the 2nd joint of framework post.
5. according to claim 3 or 4 described 1000kV AC Substation framework installation methods, it is characterized in that, during the group sheet, cat ladder is fixed on the sheet, lift by crane installation with sheet on ground.
6. 1000kV AC Substation framework installation method according to claim 5 is characterized in that, adopts the mobile jib flange to connect between the framework post post that per two joints link to each other.
7. according to claim 3 or 4 described 1000kV AC Substation framework installation methods, it is characterized in that, during the assembling gooseneck, gooseneck is divided into 5 sections successively, assembling sequence is that the 3rd section of assembling earlier assembled the 2nd, 4 section again, assembles the 1st, 5 section at last.
8. 1000kV AC Substation framework installation method according to claim 7 is characterized in that, the concrete grammar of assembling gooseneck does; The 3rd section gooseneck of assembling is assembled into the net sheet with the beam two sides earlier, relatively both sides veil sheet erected with crane then; Mounting rail bottom surface and end face link web member; Wait to net sheet stable after, remaining diagonal web member is installed again, until with the 3rd section assembled; Divide two teams and groups to carry out the symmetry assembling according to the 3rd section method, accomplish the assembling of the 2nd, 4 sections on girder steel; Press the 2nd, 4 sections assemble methods of girder steel, the assembling that symmetrical completion girder steel is the 1st, 5 sections after the assembling of whole piece beam is accomplished, is carried out the assembling quality inspection, and after quality examination was qualified, fastening bolt behind whole fastening the finishing of bolt, carried out 100% bolt installation quality inspection.
9. 1000kV AC Substation framework installation method according to claim 8 is characterized in that, 250 tons of crawler crane lifting whole piece gooseneck concrete grammars are:
Before a, the lifting, try earlier to hang, during the overhead about 100mm of gooseneck, stop lifting, the scrutiny rod member situation and the curvature of having mercy on meet the requirements and can formally lift by crane;
In b, when lifting,, amount at the uniform velocity upwards promotes, when rising when winching to 5～6 meters height; Stop lifting; Adopt 2 25 tons of cranes to cooperate then the two ends bearing diagonal is installed, steel diagonal brace one end is fixed on the girder steel node, and the other end is pulled chain block with hand and hung on the steel cross bar; After installing, continue at the uniform velocity upwards to promote;
C, when the member sling height rises to the above 500mm of setting height(from bottom), top out, slowly fall, with cable wind rope control crossbeam horizontal level in length and breadth, until aiming at bolt mounting holes, when girder steel was in place, an end in place was temporarily fixed with interim construction bolt earlier; And then carry out the in place of the girder steel other end, treat that girder steel all falls behind the position, carries out the first stubborn installation of junction girder steel bolt;
After d, girder steel are in place, utilize Lever Blocks and small instruments and tools that the other end of steel diagonal brace is fixed on the framework post; After diagonal brace installs, the bolt of junction carried out twisting end install;
After e, gooseneck are in place, install and fix at last with being about to loose two joint steel aisle, girder steel two ends;
After f, the whole installations of all girder steels, all construction bolts are carried out the inspection of 100% installation quality, till whole requirements up to specification.
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| CN201110390226.3A CN102427204B (en) | 2011-11-30 | 2011-11-30 | Installation method for 1000kV alternating-current substation structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109610920A (en) * | 2018-12-10 | 2019-04-12 | 中国电建集团河南工程有限公司 | Transmission line of electricity single-column steel tube column construction method for hanging |
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| CN2419713Y (en) * | 2000-03-15 | 2001-02-14 | 北京市电科电气装置厂 | Pre-installed basement power substation |
| CN1833343A (en) * | 2003-06-03 | 2006-09-13 | 雷德电气西班牙股份有限公司 | Electricity substation |
| JP2009240124A (en) * | 2008-03-28 | 2009-10-15 | Toshiba Corp | Control board and method of assembling same |
| CN202023298U (en) * | 2011-03-25 | 2011-11-02 | 浙江八达建设集团有限公司 | Roof truss-sectioned roof girder structure capable of being hoisted by cross type tower crane |
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2011
- 2011-11-30 CN CN201110390226.3A patent/CN102427204B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2419713Y (en) * | 2000-03-15 | 2001-02-14 | 北京市电科电气装置厂 | Pre-installed basement power substation |
| CN1833343A (en) * | 2003-06-03 | 2006-09-13 | 雷德电气西班牙股份有限公司 | Electricity substation |
| JP2009240124A (en) * | 2008-03-28 | 2009-10-15 | Toshiba Corp | Control board and method of assembling same |
| CN202023298U (en) * | 2011-03-25 | 2011-11-02 | 浙江八达建设集团有限公司 | Roof truss-sectioned roof girder structure capable of being hoisted by cross type tower crane |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109610920A (en) * | 2018-12-10 | 2019-04-12 | 中国电建集团河南工程有限公司 | Transmission line of electricity single-column steel tube column construction method for hanging |
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| CN102427204B (en) | 2014-10-01 |
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