CN102704718A - Large-scale thermal power plant steel structure combining system with high shock resistance - Google Patents
Large-scale thermal power plant steel structure combining system with high shock resistance Download PDFInfo
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- CN102704718A CN102704718A CN2012101710297A CN201210171029A CN102704718A CN 102704718 A CN102704718 A CN 102704718A CN 2012101710297 A CN2012101710297 A CN 2012101710297A CN 201210171029 A CN201210171029 A CN 201210171029A CN 102704718 A CN102704718 A CN 102704718A
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Abstract
The invention relates to a large-scale thermal power plant steel structure combining system with high shock resistance. The steel structure combining system comprises a first frame structure, a second frame structure and a steel skeleton which are connected sequentially, wherein the steel skeleton is provided with a structure comprising a plurality of rod elements which are rigidly connected or hinged with each other; the first frame structure and the second frame structure are provided with multi-layer steel frame structures respectively; the first frame structure is higher than the second frame structure; and the second frame structure is higher than the steel skeleton. The steel structure combining system is convenient to construct, i.e. steel elements can be processed and finished in a processing plant in advance, and then can be directly hoisted onto a specified position on the site for connection, so that the construction speed is high; steel beams with different section heights are adopted at both sides of irregular nodes, so that the bearing capacity at one side with larger bearing load can satisfy requirements, and the steel waste is prevented at the other side with smaller bearing load. The ductility and energy dissipation capacity of the steel structure combining system are similar to those of a steel frame structure, and the shock resistance of the steel structure combining system is completely superior to that of a reinforced concrete structure, so that the steel structure combining system can be widely applied to the large-capacity main workshops of the thermal power plants in high intensity areas.
Description
Technical field
The present invention relates to the building steel structure system, particularly a kind of large thermal power plant steel work combined system with high shock resistance.
Background technology
Electric power is the emphasis basic industry of national economy, in the steam power station, adopts big capacity unit (more than the 600MW), and not only technical indicator advanced person, and environment-friendly advantage and energy conservation and consumption reduction effects are obvious, meet strategic overall situation, have wide development and application prospect.Main building is the core of thermal power plant, the general three row formula structures that comprise steam turbine building, deaerator bay and bunker bay that adopt.In the Power Plant Main House structure design, because the requirement of production technology, part usually occurring is that multilayer, part are the large space system of individual layer; This structural system is different with frame construction in the general civilian construction, because device category is various, operational factor is complicated; Cause its integral arrangement complicated; The entire space poor-performing, the Load Transfer route is indeterminate, thereby causes its anti-seismic performance relatively poor.Past, medium and small unit main building often adopted the reinforced concrete structure system, and along with the development of State Grid's industry, single-machine capacity constantly increases; Structure height, span, loading also strengthen thereupon, and structural dynamic characteristic is more complicated, and the geological process that structure is born is also bigger; At this moment; Traditional reinforced concrete structure is not suitable in highly seismic region big capacity unit main building, and it is bigger than normal that the ratio of axial compressive force to axial compressive ultimate capacity of section of part bottom column appears in structure, problem such as structure relative storey displacement under the geological process, top displacement are bigger than normal; Therefore 8 degree set up defences and more than high earthquake intensity area, the reinforced concrete structure form can not satisfy the requirement of big capacity unit main building.In order to advance thermal power plant's structural system innovation, improve the anti-seismic performance of main building structure, demand developing a kind of new structure system urgently, be applicable to the big capacity unit main building of highly seismic region.The steel work layout is flexible, and mechanization and industrialization degree are high, and anti-seismic performance is good, is the sustainable development product of environment-friendly type.Therefore, the large electric power plant main building adopts the steel work combined system, can overcome the shortcoming of reinforced concrete structure, satisfies high earthquake intensity ground area large-capacity unit main building rigidity and requirement for bearing capacity.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the present invention provides a kind of large thermal power plant steel work combined system with high shock resistance, is made up of two frame constructions and a steel frame, has staggered floor construction in the system, and anti-seismic performance is good.
In order to achieve the above object, the technical scheme of the present invention's employing is:
A kind of large thermal power plant steel work combined system with high shock resistance comprises first frame construction 1, second frame construction 2 and the steel frame 3 that join successively, and said steel frame 3 is formed, formed each other and rigidly connect or hinged structure by some rod members.
Be provided with some steel bearing diagonals 4 in the framework of said first frame construction 1.
Be provided with one in the framework of said first frame construction 1 by the truss 5 that bearing diagonal is formed is lacked in girder steel and centre up and down.
Said first frame construction 1 adopts the mode of rigidly connecting to be connected with second frame construction 2, on shared box column 13, the first frame constructions 1 box-girder 14 is arranged; On second frame construction 2 i beam 15 is arranged; The external box-girder 14 of box column 13 1 sides, the external i beam 15 of a relative side, the top flange of the top flange of box-girder 14 and i beam 15 is on same horizontal plane; The bottom flange of box-girder 14 is lower than the bottom flange of i beam 15, thereby forms the first cross irregular node 6.
The right post 11 of said steel frame 3 is hinged with an end of upper end girder steel 10; Left side post 12 is hinged with the other end of upper end girder steel 10; Said second frame construction 2 and steel frame 3 join the post 11 in the right, are provided with two-layer steel frame 8 of first single span and the two-layer steel frame 9 of second single span in the said steel frame 3.
On said second frame construction 2 little i beam 17 is arranged; On the two-layer steel frame 8 of said first single span big i beam 16 is arranged, the right post 11 of said steel frame 3 is an I-column, and the right side of the right post 11 connects little i beam 17; The left side connects big i beam 16; The top flange of the top flange of said little i beam 17 and big i beam 16 is on same horizontal plane, and the bottom flange of little i beam 17 is lower than the bottom flange of big i beam 16, forms the second cross irregular node 7.
Compared with prior art, the invention has the beneficial effects as follows:
1) easy construction, the steel member can machine in processing factory in advance, be transported to the scene after, directly lift assigned address and connect, speed of application is fast;
2) satisfy technological requirement, practice thrift steel, adopt the girder steel of different cross section height in the irregular node both sides, both can guarantee to meet the demands, can avoid waste again at the less side steel of load at the bigger side bearing capacity of load;
3) rigidity is big; Bearing capacity is high; Anti-seismic performance is good, and experimental study shows that the ductility of this steel work combined system is similar with steel framed structure with energy dissipation capacity; Anti-seismic performance is superior to reinforced concrete structure fully, makes steel work main building system in the big capacity main building of highly seismic region thermal power plant, be able to apply.
Description of drawings
Accompanying drawing is the front view of steel work combined system sketch map of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is explained further details.
Shown in accompanying drawing, be a kind of front view with large thermal power plant steel work combined system of high shock resistance.The steel work combined system comprises first frame construction 1, second frame construction 2 and the steel frame 3 that joins successively in the horizontal direction, and said steel frame 3 is formed, formed each other and rigidly connect or hinged structure by some rod members.Wherein first frame construction 1 and second frame construction 2 are the composite steel frame construction, and first frame construction 1 is higher than second frame construction, 2, the second frame constructions 2 and is higher than steel frame 3, thereby forms a kind of staggered floor construction.The truss 5 that is provided with some steel bearing diagonals 4 in the framework of first frame construction 1 and forms by girder steel up and down and middle short bearing diagonal.
The right post 11 of steel frame 3 is hinged with an end of upper end girder steel 10, and left side post 12 is hinged with the other end of upper end girder steel 10, and said second frame construction 2 and steel frame 3 join the post 11 in the right.Be provided with in the said steel frame 3 between the inner beam column of the two-layer steel frame of the two-layer steel frame 8 of first single span and the second single span two-layer steel frame 8 of two-layer steel frame 9, the first single spans and second single span 9 and all adopt the mode of rigidly connecting; Little i beam 17 is arranged on second frame construction 2; On the two-layer steel frame 8 of said first single span big i beam 16 is arranged, the right post 11 of said steel frame 3 is an I-column, and the right side of the right post 11 connects little i beam 17; The left side connects big i beam 16; The top flange of the top flange of said little i beam 17 and big i beam 16 is on same horizontal plane, and the bottom flange of little i beam 17 is lower than the bottom flange of big i beam 16, forms the second cross irregular node 7.
Operating principle of the present invention is:
The steel work combined system is made up of first frame construction 1, second frame construction 2 and steel frame 3, and the bottom floor height of first steel frame 1 is bigger, and the top is provided with the truss of being made up of girder steel up and down and middle short bearing diagonal 5, improves its rigidity.First steel frame 1 adds some steel bearing diagonals 4, both can reduce steel using amount, also can guarantee rigidity and bearing capacity, meets the axial force-resisting member basic principle higher than bending resistance component power transmission efficiency.Steel frame 3 can guarantee that structure has bigger operating space, satisfies manufacturing technique requirent, and the bottom is provided with two steel frames that single span is two-layer, both can improve the rigidity of structural entity, can be used as the operating platform in the production again.The load that second steel frame 2 bears is less than the steel frame that is provided with in first steel frame 1 and the steel frame 3; Therefore much higher in the section ratio steel frame 2 of the girder steel of steel frame in steel frame 1 and the steel frame 3; Thereby make girder steel and steel column be connected to form the cross irregular node; Improve the shear resistance of joint cores, practiced thrift steel.Girder steel adopts bolt weldering mixing to be connected with steel column or welds being rigidly connected of connecting entirely, at the flange of beam respective heights place of joint cores stiffening rib is set, and guarantees that power transmission is clear and definite.This steel work combined system can either satisfy the technological requirement of big capacity unit main building, has good supporting capacity and anti-seismic performance again.
Claims (8)
1. large thermal power plant steel work combined system with high shock resistance; It is characterized in that; Comprise first frame construction (1), second frame construction (2) and the steel frame (3) that join successively, said steel frame (3) is formed, is formed each other and rigidly connect or hinged structure by some rod members.
2. steel work combined system according to claim 1 is characterized in that, first frame construction (1) is higher than second frame construction (2), and second frame construction (2) is higher than steel frame (3).
3. steel work combined system according to claim 1 is characterized in that, first frame construction (1) and second frame construction (2) are the composite steel frame construction.
4. steel work combined system according to claim 1 is characterized in that, is provided with some steel bearing diagonals (4) in the framework of said first frame construction (1).
5. steel work combined system according to claim 1 is characterized in that, is provided with one in the framework of said first frame construction (1) by the truss (5) that bearing diagonal is formed is lacked in girder steel and centre up and down.
6. steel work combined system according to claim 1 is characterized in that, said first frame construction (1) adopts the mode of rigidly connecting to be connected with second frame construction (2); Shared box column (13); Box-girder (14) is arranged on first frame construction (1), i beam (15) is arranged on second frame construction (2), the box column external box-girders of (13) one sides (14); The external i beam of a relative side (15); The top flange of the top flange of box-girder (14) and i beam (15) is on same horizontal plane, and the bottom flange of box-girder (14) is lower than the bottom flange of i beam (15), thereby forms the first cross irregular node (6).
7. steel work combined system according to claim 1; It is characterized in that; The right post (11) of said steel frame (3) is hinged with an end of upper end girder steel (10); The other end of left side post (12) and upper end girder steel (10) is hinged, and said second frame construction (2) and steel frame (3) join the post (11) in the right, are provided with two-layer steel frame of first single span (8) and the two-layer steel frame of second single span (9) in the said steel frame (3).
8. steel work combined system according to claim 7; It is characterized in that little i beam (17) is arranged on said second frame construction (2), big i beam (16) is arranged on the two-layer steel frame of said first single span (8); The right post (11) of said steel frame (3) is an I-column; The right side of the right post (11) connects little i beam (17), and the left side connects big i beam (16), and the top flange of the top flange of said little i beam (17) and big i beam (16) is on same horizontal plane; The bottom flange of little i beam (17) is lower than the bottom flange of big i beam (16), forms the second cross irregular node (7).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103184766A (en) * | 2013-03-22 | 2013-07-03 | 中化二建集团有限公司 | Large steel structure and manufacturing method thereof |
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| CN101672118A (en) * | 2009-09-28 | 2010-03-17 | 中国电力工程顾问集团西北电力设计院 | Main workshop structure of large heat power plant |
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| CN202100030U (en) * | 2011-01-14 | 2012-01-04 | 中国电力工程顾问集团华东电力设计院 | Integration system of main plant and boiler frame |
| CN202202410U (en) * | 2011-07-22 | 2012-04-25 | 西安建筑科技大学 | Cross-shaped abnormal joint formed by connection of steel structure box column, box beam and I beam |
| CN202202414U (en) * | 2011-07-22 | 2012-04-25 | 西安建筑科技大学 | Crossform special shaped node for rigid connection of box-like steel-structured column and I-shaped beams |
| CN202611287U (en) * | 2012-05-29 | 2012-12-19 | 西安建筑科技大学 | Steel structure combined system applicable to large-scale thermal power plant |
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2012
- 2012-05-29 CN CN2012101710297A patent/CN102704718A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0325568A (en) * | 1989-06-22 | 1991-02-04 | Oki Electric Ind Co Ltd | Card validity confirming method |
| JPH09125568A (en) * | 1995-10-31 | 1997-05-13 | Taisei Corp | Earthquake resisting frame |
| JP2005076335A (en) * | 2003-09-02 | 2005-03-24 | Arcreate:Kk | Integrating construction method of column/beam joining part of steel frame structure |
| CN101672118A (en) * | 2009-09-28 | 2010-03-17 | 中国电力工程顾问集团西北电力设计院 | Main workshop structure of large heat power plant |
| CN201794333U (en) * | 2010-09-21 | 2011-04-13 | 中国电力工程顾问集团华东电力设计院 | Power plant main power house structure arranging system and power plant main power house |
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| CN202202410U (en) * | 2011-07-22 | 2012-04-25 | 西安建筑科技大学 | Cross-shaped abnormal joint formed by connection of steel structure box column, box beam and I beam |
| CN202202414U (en) * | 2011-07-22 | 2012-04-25 | 西安建筑科技大学 | Crossform special shaped node for rigid connection of box-like steel-structured column and I-shaped beams |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103184766A (en) * | 2013-03-22 | 2013-07-03 | 中化二建集团有限公司 | Large steel structure and manufacturing method thereof |
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Application publication date: 20121003 |