CN1335439A - Prestressed large-span solid portal steel frame and its construction process - Google Patents
Prestressed large-span solid portal steel frame and its construction process Download PDFInfo
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- CN1335439A CN1335439A CN 00121412 CN00121412A CN1335439A CN 1335439 A CN1335439 A CN 1335439A CN 00121412 CN00121412 CN 00121412 CN 00121412 A CN00121412 A CN 00121412A CN 1335439 A CN1335439 A CN 1335439A
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Abstract
The prestressed large-span solid portal steel frame consists of H-shaped steel beam and steel columns, and the steel beam consists of members with flange, high strength connecting screw bolts, prestressed bar penetrating the whole length, anchoring parts corresponding to the prestressed bars in the vertical steel columns, steel back plates and screw nuts. The prestressed large-span solid portal steel frame is constituted through applying prestress to all members, assembling, straining after healing and applying prestress in the shoulders of the portal frame, and may be used in large gymnasium, exhibition hall, hanger, etc.
Description
The present invention relates to a kind of prestressed steel structure Building technology, especially be applicable to the prestressed large-span solid portal steel frame and the building method thereof of large span light section steel structure engineering.
At present, known large-span steel engineering is to be welded into portal frame with welded H type i iron, and girder steel and steel column all adopt variable cross-section, to reduce the cross section from heavy load, thereby reach the purpose of saving steel using amount, Roof system also adopts the way of purlin upper berth profiled sheet as far as possible, with weight reduction, general like this light section steel structure can accomplish that span is bigger, steel using amount is economized, and generally speaking, its post is apart from accomplishing 6-8m, the span maximum also can reach 72m, and steel using amount is at 70kg/m
2Below, has better economic, ripe, construction technology efficiently, but span and post be apart from strengthening again, and not only form of structure becomes unreasonable, the cross section is also bigger, steel using amount also increases suddenly, can't satisfy growing market to the requirement apart from, low steel using amount of large span, huge pillar, for than large span, all adopt rack or suspended-cable structure both at home and abroad, and this structure obviously exists design, making, construction, difficulty is big, long in time limit, cost is high problem.
Purpose of the present invention is exactly to solve the above-mentioned problem that steel work exists of striding greatly, a kind of new structural shape that satisfies market demand is provided, a kind of prestressed large-span solid portal steel frame and building method thereof promptly are provided, make it to satisfy large span, the requirement of huge pillar distance, and the saving steel, and design, making, mounting technique maturation, short construction period.
The object of the present invention is achieved like this: a kind of prestressed large-span solid portal steel frame, form by H section steel beam and steel post, the girder steel two ends are installed in the upper end of two steel posts and are a shape, it is characterized in that: described H section steel beam is made of several sections prestressing force H Steel section members, its every section prestressing force H Steel section member end sets firmly flange, and the corresponding high-strength bolt that connects each prestressing force H Steel section member that is provided with; Be provided with the elongated presstressed reinforcing steel that perforation is striden entirely in the side of H section steel beam horizontal direction, the biased outward vertical direction is provided with presstressed reinforcing steel in steel post top, and the end of elongated presstressed reinforcing steel and presstressed reinforcing steel is the screw end bar; On the edge of a wing of H section steel beam and steel post, web, be provided with fixedly presstressed reinforcing steel and anchor, the billet of elongated presstressed reinforcing steel and the nut that matches with the screw end bar with above-mentioned screw end bar corresponding site.
A kind of building method of prestressed large-span solid portal steel frame comprises the cutting of H section steel beam and steel post and welds system, and it is characterized in that: this building method may further comprise the steps:
1) at every section prestressed member frange plate forming the H section steel beam, web root in the tensile region of this member, utilize anchor and spiral shell button, by the stretch-draw high tensile reinforcement member is applied prestressing force, also available special jack tension, make the preceding first pressurized of member tension, institute's prestressed size that applies is determined by computational analysis according to the suffered load condition of member, is made prestressing force balance out the internal stress that external applied load produces just in member;
2) from two steel columns upper end, flange by the prestressed member end, one section one section ground symmetry of each section prestressed member is extended to the span centre splicing, and each section all was fastened on the last period that has installed, progressively formed a pair of overhanging beam that stretches out to the centre from two ends.
3) treat that above-mentioned semi girder further is installed on after span centre closes up, again with behind the screw end bar and girder steel frange plate, web the relevant position billet and the fastening stretch-draw of nut that are provided with of elongated presstressed reinforcing steel by its end, utilize nut that the supporting role of screw end bar is anchored at elongated presstressed reinforcing steel on the billet, thereby form continuous steel beam.
4) utilize presstressed reinforcing steel, the screw end bar of set vertical direction on the column, billet, nut and anchor apply prestressing force to door frame shoulder advancing side, and the girder steel that this steel post and its supported just constitutes a prestressed large-span solid portal steel frame.
Owing to adopting technique scheme that girder steel is applied the prestressing force portal frame that prestressing force constitutes, the present invention has following beneficial effect: design and produce, building operations is all simpler, short construction period, and component internal force value and deformation of member value are all reduced a lot, after construction is finished, can offset most of external load function, stride the purpose that subtracts steel, this new form of structure thereby reach large span, small bore and then reach to increase, span can increase to 150m, and post is apart from reaching 12m.Compare with originally applying prestressed portal frame, under identical span, its steel using amount can be saved more than 35%, and under the situation of identical steel using amount, span can increase more than 30%.
Below in conjunction with accompanying drawing the specific embodiment of the present invention is done to describe in further detail.
Fig. 1 is Large Span Prestressed solid portal steel frame of the present invention assembly unit and prestressing force lacing wire position general structure schematic diagram;
Fig. 2 is Fig. 1 corner structure enlarged diagram;
Fig. 3 is the syndeton enlarged diagram of Fig. 2 presstressed reinforcing steel end screw end bar, billet, anchor and nut;
Fig. 4 is with adjacent two sections structural representations that presstressed reinforcing steel links together with screw socket.
The number in the figure title:
1 H section steel beam, 1 ' H shaped steel column, 2 flange
3 elongated presstressed reinforcing steel 3 ' presstressed reinforcing steel 4 high-strength bolts
5 billets, 6 nuts, 7 screw end bars
8 anchors, 9 screw sockets, 10 pedestals
As shown in Figure 1, provided the general structure of prestressed large-span solid portal steel frame, comprise H section steel beam 1 and steel post 1 ', described H section steel beam 1 is made up of several sections H shaped steel prestressed members, its every section component ends sets firmly flange 2, and the corresponding high-strength bolt 4 that connects each section prestressed member that is provided with, be provided with the elongated presstressed reinforcing steel 3 that the perforation more than one or is striden entirely in the side of H section steel beam 1, provide one among the figure, the horizontal perforation of end to end that is positioned at this girder steel 1 is striden entirely, H section steel beam 1 is then presented and is scratched shape, the formation of elongated presstressed reinforcing steel 3 can select for use the cold drawn II level of moderate strength and III grade reinforcing steel to make, and also can select for use steel wire cable to make, and its maximum gauge is 40mm, its intensity is 900/1100Mpa, as adopt reinforcement fabrication, because the length of material has certain restriction, need spreading, thereby elongated presstressed reinforcing steel 3 is made up of several sections presstressed reinforcing steels, connects (as shown in Figure 4) in the threaded end of adjacent two sections presstressed reinforcing steels with screw socket 9.
As shown in Figures 2 and 3, be provided with presstressed reinforcing steel 3 ' in H shaped steel column 1 ' top biased outward portion vertical direction, this presstressed reinforcing steel 3 ' and the end that connects the elongated presstressed reinforcing steel 3 of striding entirely are screw end bar 7, are provided with fixedly presstressed reinforcing steel 3 ' and the anchor 8 of elongated presstressed reinforcing steel 3, the nut 6 that billet 5 reaches and screw end bar 7 matches at the corresponding site of wing plate, web and the screw end bar 7 of H section steel beam 1 and H shaped steel column 1 '.
More than each member just formed the Large Span Prestressed solid portal steel frame of a lightweight steel construction, its building method may further comprise the steps: at first, in member processing factory Manufactured member is applied prestressing force, at every section prestressed member frange plate forming H section steel beam 1, the web root, in this member tensile region, make the preceding first pressurized of member tension, promptly by the stretch-draw high tensile reinforcement, this is end reinforced to be screw end bar 7, process or weld one section lead screw with rolling process, utilization is at frange plate, the set anchor 8 in web relevant position, billet 5,6 pairs of members of screw end bar 7 and nut apply prestressing force, also available special jack tension, added prestressing force size is determined by computational analysis according to the situation of the suffered external applied load of member, is made prestressing force balance out the internal stress that external applied load produces just in member.Second, during building operations, on inside portion, steel post 1 ' the upper end pedestal 10 that fabrication and installation are good, by prestressed member end flange dish 2 corresponding and high-strength bolt 4 one section one section ground symmetry of each section prestressed member is extended to the span centre splicing with pedestal 10, each section all was fastened on the last period that has installed, progressively formed a pair of semi girder that stretches out to the centre from two ends.The 3rd, treat that above-mentioned semi girder further is installed on after span centre closes up, after passing through screw end bar 7, billet 5 and the nut 6 fastening stretch-draw of its end with elongated presstressed reinforcing steel 3 again, utilize the supporting role of 6 pairs of screw end bars 7 of nut, be anchored on the billet 5 connecting the elongated presstressed reinforcing steel of striding entirely, thereby form continuous steel beam 1.The 4th, the presstressed reinforcing steel 3 ' and screw end bar 7, billet 5, nut 6 and 8 pairs of door frame shoulders of the anchor advancing side that utilize steel post 1 ' to go up set vertical direction apply prestressing force, and this steel post 1 ' just constitutes a prestressed large-span solid portal steel frame with its girder steel that is supported 1.Above-mentioned stretching force when applying prestressing force is not more than 600KN.
Referring to Fig. 1, the post of prestressed large-span solid portal steel frame of the present invention is apart from reaching 12m, and the span maximum can reach about 150m, can be used as large-scale indoor sport shop, exhibition hall and hangar etc.
Claims (9)
1. prestressed large-span solid portal steel frame, form by H section steel beam and steel post, the girder steel two ends are installed in the upper end of two steel posts and are a shape, it is characterized in that: described H section steel beam is made of several sections prestressing force H Steel section members, its every section prestressing force H Steel section member end sets firmly flange, and the corresponding high-strength bolt that connects each prestressing force H Steel section member that is provided with; Be provided with the elongated presstressed reinforcing steel that perforation is striden entirely in the side of H section steel beam horizontal direction, the biased outward vertical direction is provided with presstressed reinforcing steel in steel post top, and the end of elongated presstressed reinforcing steel and presstressed reinforcing steel is the screw end bar; On the edge of a wing of H section steel beam and steel post, web, be provided with fixedly presstressed reinforcing steel and anchor, the billet of elongated presstressed reinforcing steel and the nut that matches with the screw end bar with above-mentioned screw end bar corresponding site.
2. a kind of prestressed large-span solid portal steel frame according to claim 1 is characterized in that: the elongated presstressed reinforcing steel that described perforation is striden entirely can be formed by several sections, is provided with the screw socket that connects in adjacent two sections threaded ends.
3. a kind of prestressed large-span solid portal steel frame according to claim 1 and 2, it is characterized in that: described elongated presstressed reinforcing steel and presstressed reinforcing steel adopt a kind of in the cold drawn II level of moderate strength and III grade reinforcing steel or the high tensile steel wire rope, its maximum gauge is 40mm, and its intensity is 900/1100Mpa.
4. a kind of prestressed large-span solid portal steel frame according to claim 1 is characterized in that: the elongated presstressed reinforcing steel that described perforation is striden entirely, horizontal from the end to end of girder steel, girder steel is then presented and is scratched shape.
5. a kind of prestressed large-span solid portal steel frame according to claim 1 is characterized in that: the presstressed reinforcing steel of vertical direction is provided with one respectively at least on elongated presstressed reinforcing steel that described perforation is striden entirely and the steel post.
6. the building method of the described prestressed large-span solid portal steel frame of claim 1 comprises the cutting of H section steel beam and steel post and welds system, and it is characterized in that: this building method may further comprise the steps:
1) at every section prestressed member frange plate forming the H section steel beam, web root in the tensile region of this member, utilize anchor and spiral shell button, by the stretch-draw high tensile reinforcement member is applied prestressing force, also available special jack tension, make the preceding first pressurized of member tension, institute's prestressed size that applies is determined by computational analysis according to the suffered load condition of member, is made prestressing force balance out the internal stress that external applied load produces just in member;
2) from two steel columns upper end, flange by the prestressed member end, one section one section ground symmetry of each section prestressed member is extended to the span centre splicing, and each section all was fastened on the last period that has installed, progressively formed a pair of overhanging beam that stretches out to the centre from two ends.
3) treat that above-mentioned semi girder further is installed on after span centre closes up, again with behind the screw end bar and girder steel frange plate, web the relevant position billet and the fastening stretch-draw of nut that are provided with of elongated presstressed reinforcing steel by its end, utilize nut that the supporting role of screw end bar is anchored at elongated presstressed reinforcing steel on the billet, thereby form continuous steel beam.
4) utilize presstressed reinforcing steel, the screw end bar of set vertical direction on the column, billet, nut and anchor apply prestressing force to door frame shoulder advancing side, and the girder steel that this steel post and its supported just constitutes a prestressed large-span solid portal steel frame.
7. the building method of prestressed large-span solid portal steel frame according to claim 5 is characterized in that: describedly apply prestressed stretching force and be not more than 600KN.
8. the building method of prestressed large-span solid portal steel frame according to claim 5 is characterized in that: the lead screw of described presstressed reinforcing steel and elongated presstressed reinforcing steel end is the rolling and processing method or welds a kind of in one section lead screw method.
9. the building method of prestressed large-span solid portal steel frame according to claim 5 is characterized in that: describedly apply prestressed method, adopt a kind of in tension of prestressed tendon method or the special jack tension method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00121412 CN1115449C (en) | 2000-07-20 | 2000-07-20 | Prestressed large-span solid portal steel frame and its construction process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00121412 CN1115449C (en) | 2000-07-20 | 2000-07-20 | Prestressed large-span solid portal steel frame and its construction process |
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| Publication Number | Publication Date |
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| CN1335439A true CN1335439A (en) | 2002-02-13 |
| CN1115449C CN1115449C (en) | 2003-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 00121412 Expired - Fee Related CN1115449C (en) | 2000-07-20 | 2000-07-20 | Prestressed large-span solid portal steel frame and its construction process |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101597919B (en) * | 2009-06-25 | 2010-12-29 | 江苏科技大学 | Steel structure connecting device applying prestress |
| CN102108759A (en) * | 2009-12-27 | 2011-06-29 | 贵阳铝镁设计研究院 | Steel bracket column used for factory |
| CN102561752A (en) * | 2012-02-24 | 2012-07-11 | 中国民航大学 | Retractable temporary hangar |
| CN102644322A (en) * | 2011-02-18 | 2012-08-22 | 张一熙 | Draw bar type greenhouse framework system |
| CN105525680A (en) * | 2015-12-02 | 2016-04-27 | 苏州天地彩钢制造有限公司 | Fixing steel structure |
| CN105544722A (en) * | 2015-12-02 | 2016-05-04 | 苏州天地彩钢制造有限公司 | Stable steel structure |
| CN105544723A (en) * | 2015-12-02 | 2016-05-04 | 苏州天地彩钢制造有限公司 | Dual counterpoint steel structure |
| CN105604334A (en) * | 2016-01-18 | 2016-05-25 | 中铁三局集团有限公司 | Rapid-construction method used for overall installation of large-span steel truss |
| CN108612317A (en) * | 2018-05-24 | 2018-10-02 | 中国二十冶集团有限公司 | A kind of band waves column type gate-type combination steel frame construction installation method |
| CN109235644A (en) * | 2018-11-09 | 2019-01-18 | 罗大威 | Assembled architecture super-span door shape bearing frame |
| CN109537800A (en) * | 2018-11-30 | 2019-03-29 | 中国建筑第八工程局有限公司 | Super-span overhangs prestressed arc-shape steel beam structure and its construction method |
| CN110792161A (en) * | 2019-10-23 | 2020-02-14 | 中冶天工集团有限公司 | Box type modular combined steel structure and manufacturing method |
| CN113982113A (en) * | 2021-12-03 | 2022-01-28 | 上海泰大建筑科技有限公司 | Three-section beam and column structure and combined frame type structure thereof |
| CN114059662A (en) * | 2021-11-29 | 2022-02-18 | 山西四建集团有限公司 | High-low span column-drawing type steel frame and construction method thereof |
-
2000
- 2000-07-20 CN CN 00121412 patent/CN1115449C/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101597919B (en) * | 2009-06-25 | 2010-12-29 | 江苏科技大学 | Steel structure connecting device applying prestress |
| CN102108759A (en) * | 2009-12-27 | 2011-06-29 | 贵阳铝镁设计研究院 | Steel bracket column used for factory |
| CN102644322A (en) * | 2011-02-18 | 2012-08-22 | 张一熙 | Draw bar type greenhouse framework system |
| CN102561752A (en) * | 2012-02-24 | 2012-07-11 | 中国民航大学 | Retractable temporary hangar |
| CN105525680A (en) * | 2015-12-02 | 2016-04-27 | 苏州天地彩钢制造有限公司 | Fixing steel structure |
| CN105544722A (en) * | 2015-12-02 | 2016-05-04 | 苏州天地彩钢制造有限公司 | Stable steel structure |
| CN105544723A (en) * | 2015-12-02 | 2016-05-04 | 苏州天地彩钢制造有限公司 | Dual counterpoint steel structure |
| CN105604334A (en) * | 2016-01-18 | 2016-05-25 | 中铁三局集团有限公司 | Rapid-construction method used for overall installation of large-span steel truss |
| CN108612317A (en) * | 2018-05-24 | 2018-10-02 | 中国二十冶集团有限公司 | A kind of band waves column type gate-type combination steel frame construction installation method |
| CN109235644A (en) * | 2018-11-09 | 2019-01-18 | 罗大威 | Assembled architecture super-span door shape bearing frame |
| CN109235644B (en) * | 2018-11-09 | 2024-09-03 | 罗大威 | Ultra-large span portal bearing frame for assembled building |
| CN109537800A (en) * | 2018-11-30 | 2019-03-29 | 中国建筑第八工程局有限公司 | Super-span overhangs prestressed arc-shape steel beam structure and its construction method |
| CN109537800B (en) * | 2018-11-30 | 2021-09-21 | 中国建筑第八工程局有限公司 | Super-large span cantilever prestress arc-shaped steel beam structure and construction method thereof |
| CN110792161A (en) * | 2019-10-23 | 2020-02-14 | 中冶天工集团有限公司 | Box type modular combined steel structure and manufacturing method |
| CN114059662A (en) * | 2021-11-29 | 2022-02-18 | 山西四建集团有限公司 | High-low span column-drawing type steel frame and construction method thereof |
| CN114059662B (en) * | 2021-11-29 | 2023-09-26 | 山西四建集团有限公司 | High-low span column drawing type steel frame and construction method thereof |
| CN113982113A (en) * | 2021-12-03 | 2022-01-28 | 上海泰大建筑科技有限公司 | Three-section beam and column structure and combined frame type structure thereof |
| CN113982113B (en) * | 2021-12-03 | 2023-08-11 | 上海泰大建筑科技有限公司 | Three-section beam and column structure and combined frame type structure thereof |
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| Publication number | Publication date |
|---|---|
| CN1115449C (en) | 2003-07-23 |
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