CN102359292A - Truss type large plate girder system for tower type boiler - Google Patents
Truss type large plate girder system for tower type boiler Download PDFInfo
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- CN102359292A CN102359292A CN2011103419278A CN201110341927A CN102359292A CN 102359292 A CN102359292 A CN 102359292A CN 2011103419278 A CN2011103419278 A CN 2011103419278A CN 201110341927 A CN201110341927 A CN 201110341927A CN 102359292 A CN102359292 A CN 102359292A
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Abstract
The invention provides a truss type large plate girder system for a tower type boiler. The large plate girder system comprises a main truss and a secondary truss, wherein the main truss is provided with an upper chord, a lower chord, a web member and an end vertical member; the upper chord is parallel to the lower chord; the end vertical member is vertical to the upper chord and the lower chord and is fixedly connected with the two ends of the upper chord and the lower chord; the secondary truss is vertically arranged on the main truss; and the end vertical member of the main truss is connected with the column top of a steel frame of the tower type boiler. The truss type large plate girder system has the advantages of light weight of a single member, small size, low total using amount of steel, high mechanical property, high vertical rigidity, convenience of installation and the like.
Description
Technical field
The present invention relates to the large-scale thermal power technical field, particularly a kind of big plate-girder system of truss-like that is used for tower boiler.
Background technology
Big plate-girder system: the stress system of boiler furnace roof, through the suspension rod suspention whole cooker furnace body of boiler body, bear the load of whole cooker furnace body.It all has the very big rigidity of structure and bearing capacity in vertical and horizontal direction.
The real abdomen girder steel of box-shaped superposed type: girder steel a kind of, directly be welded with steel plate usually, cross section becomes box, at span centre for improving bearing capacity, laminated steel plate in addition again.
The stress form of tower boiler grate is a suspension, and the used vertical load of boiler body all is to be connected with big plate-girder system through suspension rod.So big plate-girder system is born huge vertical force.The big plate-girder of existing product furnace roof adopts the real abdomen girder steel of two article box-shaped superposed types as girder, and real abdomen girder steel is done secondary beam.This design often causes big plate-girder member huge, and deck-molding possibly reach more than the 7m, the steel member that span is more than 30 meter.Material requirements is higher; The steel using amount of big plate-girder is very big; On-site hoisting generally needs at twice or repeatedly lifting, and is very high to the quality requirement of field Welding, and such super large, overweight member material, making, welding, transportation, installation, debugging difficulty very all.
Therefore, this area press for and develop that little, the total steel using amount of a kind of single construction weight size is few, stress performance good, vertical stiffness good, new big plate-girder system easy for installation.
Summary of the invention
The object of the present invention is to provide the big plate-girder system of a kind of truss-like.Have advantages such as single construction weight is light, size is little, total steel using amount is few, stress performance good, vertical stiffness is good, easy for installation.
The big plate-girder system of truss-like provided by the invention comprises:
Main couple, said main couple comprise upper chord, lower chord, web member and end montant;
Said upper chord and lower chord are parallel to each other;
Said web member tilts or/and be vertically installed between the upper chord and lower chord of said main couple;
Said end montant is vertical with lower chord with said upper chord, and is fixedly connected with the two ends of said upper chord and lower chord;
Jack truss, said jack truss vertically is arranged in said main couple;
The end montant of said main couple is connected with tower boiler steelframe capital.
In another preference, said jack truss comprises:
Inferior upper chord, inferior lower chord, inferior web member and inferior end montant;
Said time upper chord is parallel to each other with time lower chord;
Said time web member tilts or/and be vertically installed between the inferior upper chord and inferior lower chord of said jack truss;
Said time end montant is vertical with inferior lower chord with said upper chord, and is fixedly connected with the two ends of said upper chord and inferior lower chord;
In another preference, also be provided with the secondary jack truss perpendicular to jack truss.
In another preference, the suffered vertical force of the big plate-girder system of said truss-like is passed to boiler steel trestle top from secondary jack truss, jack truss, main couple successively.
In another preference, also be provided with the real abdomen girder steel of secondary perpendicular to said jack truss, the real abdomen girder steel of said secondary cross section is worker's type or box.
In another preference, the deck-molding of said big plate-girder system is a 5-9 rice, and span is a 25-50 rice.
Preferably, the deck-molding of said big plate-girder system is 7 meters.
In another preference, the sectional area of said upper chord, lower chord and end montant is 2.5 * 2.5m
2
In another preference, the height of said tower-type furnace steel frame columns is a 90-160 rice.
Preferably, the height of said tower-type furnace steel frame columns is 140 meters.
In another preference, said big plate-girder system is applied to the large-scale thermal power technology of 800～1400MW grade.
In another preference, it is fixing that said big plate-girder system adopts bolt or welding manner to connect.
In should be understood that within the scope of the present invention, above-mentioned each technical characterictic of the present invention and hereinafter can mutual combination between specifically described each technical characterictic in (like embodiment), thus constitute new or optimized technical scheme.As space is limited, this tired no longer one by one stating.
Description of drawings
Fig. 1 is the big plate-girder system of truss-like facade arrangement diagram in the preferred embodiments of the present invention;
Fig. 2 is the big plate-girder system of truss-like layout plan in the preferred embodiments of the present invention.
The specific embodiment
Deeply and extensive studies adopts the real abdomen girder steel of two article box-shaped superposed types as girder from solving existing big plate-girder system real abdomen girder steel is done secondary beam to the inventor through long-term, and defectives such as steel using amount is big, welding quality requirement height, hard transportation are set out.The structure of the big plate-girder system of boiler is improved, can reduce big plate-girder system total with steel in, satisfy the force request of big plate-girder system.Have advantages such as stress performance is good, vertical stiffness is good, easy for installation.Accomplished the present invention on this basis.
Only if definition separately, employed all specialties are identical with the meaning that scientific words and one skilled in the art are familiar with in the literary composition.In addition, any with the institute similar content of putting down in writing or the equalization method and material all can be applicable in the inventive method.The usefulness that preferable implementation method described in the literary composition and material only present a demonstration.
Below will combine accompanying drawing that preferred embodiments of the present invention is elaborated, understand the object of the invention, characteristics and advantage so that more know.Should be understood that these embodiment only to be used to the present invention is described and be not used in the restriction scope of the present invention.
The big plate-girder system of the truss-like of the present invention's one preferred embodiments, as depicted in figs. 1 and 2.
The big plate-girder system of this truss-like comprises: main couple 1, said main couple 1 comprise upper chord 11, lower chord 12, web member 13 and end montant 14; Said upper chord 11 is parallel to each other with lower chord 12; Said web member 13 is obliquely installed between the upper chord 11 and lower chord 12 of said main couple 1; Said end montant 14 is vertical with lower chord 12 with said upper chord 11, and is fixedly connected with the two ends of said upper chord 11 and lower chord 12; Jack truss 2, said jack truss 2 vertically is arranged in said main couple 1; The end montant 14 of said main couple 1 is connected with tower boiler steelframe capital 3.
The big plate-girder system of the truss-like of this kind structure; With with the real abdomen girder steel of two article box-shaped superposed types as girder; The big plate-girder system that real abdomen girder steel is done secondary beam is compared, and under the situation of identical deck-molding and identical span, the sectional area of each bar of the big plate-girder system of truss-like is much smaller than the sectional area of real abdomen girder steel; And the big plate-girder system of truss-like can be born and the identical or bigger load of real abdomen girder steel, when having significantly reduced total consumption of steel, has satisfied the LOAD FOR requirement of big plate-girder system, has the advantage that stress-bearing capability is good, vertical stiffness is good.And the big plate-girder system of real abdomen steel beam structure generally needs at twice or repeatedly lifting because size is big, quality is heavy, fixes through field Welding again.The big plate-girder system of truss-like is owing to adopt two truss as main primary structure member, and size is little, in light weight, the steel thickness of slab is thinner relatively, can a hoisted in position, and easy for installation.
Further, jack truss 2 comprises: inferior upper chord (not shown), inferior lower chord (not shown), inferior web member (not shown) and time end montant (not shown); Said time upper chord is parallel to each other with time lower chord; Said time web member tilts or/and be vertically installed between the inferior upper chord and inferior lower chord of said jack truss; Said time end montant is vertical with inferior lower chord with said upper chord, and is fixedly connected with the two ends of said upper chord and inferior lower chord.The structure of jack truss 2 can be identical with main couple 1, this Stability Analysis of Structures, and stress equalization between each contact, to every bar, the power that every bar bore is less, so can adopt the long-pending steel pole of small cross sections with the huge mass distribution of boiler body for many bars.
In addition, be appreciated that jack truss 2 can adopt other structures, like structures such as triangular form truss, parallel chord truss, polygonal trusses in some other embodiment of the present invention.
Also be provided with secondary jack truss (not shown) perpendicular to jack truss 2.The secondary jack truss is arranged on the jack truss 2, can design according to practical application request, mainly plays load and the effect that adds the stress performance of powerful plate-girder of transmitting.
Be appreciated that in some other embodiment of the present invention also can not possess this secondary jack truss in addition.
The suffered vertical force of the big plate-girder system of said truss-like is passed to boiler steel trestle top 3 from secondary jack truss, jack truss 2, main couple 1 successively.Main couple 1, jack truss 2, secondary jack truss etc. have been formed the big plate-girder system of truss-like jointly, and the boiler body suspension rod can be connected with the steel member of big plate-girder system in the position of needs, transmits the vertical force of boiler body.The vertical force bang path of the big plate-girder system of truss-like is followed successively by: boiler body suspension rod, secondary jack truss, jack truss 2, main couple 1, boiler steel trestle top 3.
Can also substitute the secondary jack truss with the real abdomen steel beam structure of secondary perpendicular to jack truss 2; The real abdomen girder steel of secondary can reach the effect that adds powerful plate-girder stress performance equally, can be greater than the big plate-girder system that adopts secondary jack truss structure but adopt the real abdomen girder steel of secondary to do the quality of the big plate-girder system of secondary jack truss.The cross section of the real abdomen girder steel of secondary can be worker's type, box, circle or other shapes.
In addition, be appreciated that in some other embodiment of the present invention also not possess the real abdomen girder steel of this secondary.
The deck-molding of big plate-girder system is a 5-9 rice.Preferably, the deck-molding of big plate-girder system is 7 meters.The span of big plate-girder system is a 25-50 rice.
The sectional area of upper chord 11, lower chord 12, web member 13 and end montant 14 is 2.5 * 2.5m
2This sectional area is much smaller than the sectional area 2.4 * 7.8m of traditional real abdomen girder steel
2, practiced thrift the consumption of the steel of big plate-girder system greatly.
The height of tower-type furnace steel frame columns 3 is a 90-160 rice.Preferably, the height of tower-type furnace steel frame columns 3 is 140 meters.
Big plate-girder system can be applied to the large-scale thermal power technology of 800～1400MW grade.The used vertical load of jumbo tower-type furnace boiler body surpasses ten thousand tons, and big plate-girder system of the present invention can be born and surpassed ten thousand tons huge vertical force.
It is fixing that big plate-girder system adopts bolt or welding manner to connect.Traditional big plate-girder needs at twice or repeatedly lifting, and field Welding is very high to the quality requirement of field Welding.The big plate-girder of truss-like of the present invention only need adopt hoisted in position one time, and easy for installation, operation is simple.
The above-mentioned characteristic that the present invention mentions, or the characteristic that embodiment mentions can combination in any.All characteristics that this case manual is disclosed can with any composition forms and usefulness, each characteristic that is disclosed in the manual can anyly provide the alternative characteristics of identical, impartial or similar purpose to replace.Therefore removing has special instruction, the characteristic that is disclosed to be merely the general example of equalization or similar features.
All documents in that the present invention mentions are all quoted as a reference in this application, are just quoted such as a reference separately as each piece document.Should be understood that in addition after having read above-mentioned teachings of the present invention, those skilled in the art can do various changes or modification to the present invention, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Claims (10)
1. the big plate fine strain of millet of a truss-like system that is used for tower boiler is characterized in that, comprising:
Main couple, said main couple comprise upper chord, lower chord, web member and end montant;
Said upper chord and lower chord are parallel to each other;
Said web member tilts or/and be vertically installed between the upper chord and lower chord of said main couple;
Said end montant is vertical with lower chord with said upper chord, and is fixedly connected with the two ends of said upper chord and lower chord;
Jack truss, said jack truss vertically is arranged in said main couple;
The end montant of said main couple is connected with tower boiler steelframe capital.
2. big plate-girder system according to claim 1 is characterized in that said jack truss comprises:
Inferior upper chord, inferior lower chord, inferior web member and inferior end montant;
Said time upper chord is parallel to each other with time lower chord;
Said time web member tilts or/and be vertically installed between the inferior upper chord and inferior lower chord of said jack truss;
Said time end montant is vertical with inferior lower chord with said upper chord, and is fixedly connected with the two ends of said upper chord and inferior lower chord.
3. big plate-girder system according to claim 1 and 2 is characterized in that, also is provided with the secondary jack truss perpendicular to jack truss.
4. big plate-girder system according to claim 3 is characterized in that, the suffered vertical force of the big plate-girder system of said truss-like is passed to boiler steel trestle top from secondary jack truss, jack truss, main couple successively.
5. big plate-girder system according to claim 1 is characterized in that, also is provided with the real abdomen girder steel of secondary perpendicular to said jack truss, and the real abdomen girder steel of said secondary cross section is worker's type or box.
6. big plate-girder system according to claim 1 is characterized in that the deck-molding of said big plate-girder system is a 5-9 rice, and span is a 25-50 rice.
7. big plate-girder system according to claim 1 is characterized in that the sectional area of said upper chord, lower chord, web member and end montant is 2.5 * 2.5m
2
8. big plate-girder system according to claim 1 is characterized in that the height of said tower-type furnace steel frame columns is a 90-160 rice.
9. big plate-girder system according to claim 1 is characterized in that, said big plate-girder system is applied to the large-scale thermal power technology of 800～1400MW grade.
10. big plate-girder system according to claim 1 is characterized in that, it is fixing that said big plate-girder system adopts bolt or welding manner to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110341927 CN102359292B (en) | 2011-11-02 | 2011-11-02 | Truss type large plate girder system for tower type boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110341927 CN102359292B (en) | 2011-11-02 | 2011-11-02 | Truss type large plate girder system for tower type boiler |
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| CN102359292A true CN102359292A (en) | 2012-02-22 |
| CN102359292B CN102359292B (en) | 2013-07-17 |
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| CN 201110341927 Active CN102359292B (en) | 2011-11-02 | 2011-11-02 | Truss type large plate girder system for tower type boiler |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017136A (en) * | 2012-12-26 | 2013-04-03 | 哈尔滨锅炉厂有限责任公司 | Optimized connection device between support pipes in boiler truss |
| CN107166363A (en) * | 2017-05-16 | 2017-09-15 | 清华大学 | A kind of space truss formula large girder group structure system for power station suspended boiler |
| CN108868000A (en) * | 2018-06-12 | 2018-11-23 | 清华大学 | A kind of parabola shaped plane girder formula large girder structure for power plant's suspended boiler |
| CN110822407A (en) * | 2019-11-26 | 2020-02-21 | 哈尔滨锅炉厂有限责任公司 | Novel economizer flue structure and installation and arrangement method |
| CN111305079A (en) * | 2020-03-30 | 2020-06-19 | 河北省交通规划设计院 | Prefabricated assembled steel truss web concrete composite bridge and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107166363A (en) * | 2017-05-16 | 2017-09-15 | 清华大学 | A kind of space truss formula large girder group structure system for power station suspended boiler |
| CN108868000A (en) * | 2018-06-12 | 2018-11-23 | 清华大学 | A kind of parabola shaped plane girder formula large girder structure for power plant's suspended boiler |
| CN110822407A (en) * | 2019-11-26 | 2020-02-21 | 哈尔滨锅炉厂有限责任公司 | Novel economizer flue structure and installation and arrangement method |
| CN110822407B (en) * | 2019-11-26 | 2021-08-20 | 哈尔滨锅炉厂有限责任公司 | Novel economizer flue structure and installation and arrangement method |
| CN111305079A (en) * | 2020-03-30 | 2020-06-19 | 河北省交通规划设计院 | Prefabricated assembled steel truss web concrete composite bridge and construction method |
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| CN102359292B (en) | 2013-07-17 |
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Owner name: CHINA POWER ENGINEERING CONSULTING GROUP EAST CHIN Free format text: FORMER NAME: HUABEI POWER DESIGN INST., CHINA POWER ENGINEERING CONSULTING GROUP |
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Address after: 200063 Wuning Road, Shanghai, No. 409, No. Patentee after: Co., Ltd of Huabei Power Design Inst., China Power Engineering Consulting Group Address before: 200063 Wuning Road, Shanghai, No. 409, No. Patentee before: Huabei Power Design Inst., China Power Engineering Consulting Group |