CN104389433A - Integral hoisting system and construction method for steel truss support concrete heavy roof system - Google Patents
Integral hoisting system and construction method for steel truss support concrete heavy roof system Download PDFInfo
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- CN104389433A CN104389433A CN201410563096.2A CN201410563096A CN104389433A CN 104389433 A CN104389433 A CN 104389433A CN 201410563096 A CN201410563096 A CN 201410563096A CN 104389433 A CN104389433 A CN 104389433A
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Abstract
The invention belongs to the field of civil engineering construction, and particularly relates to an integral hoisting system and a construction method for a steel truss support concrete heavy roof system. The integral hoisting system for the steel truss support concrete heavy roof system comprises hydraulic jacks, a hydraulic pump station, a steel stranded wire, support frames and a guide frame, wherein a plurality of hoisting suspension points are in uniform and symmetrical distribution; each hoisting suspension point is provided with one support frame; each support frame is fixed above a peripheral shear wall or a support post; one hydraulic jack is arranged on each support frame, and is connected with the hydraulic pump station through an oil pipe; each hydraulic jack is of a core penetrating type structure; a work anchor gear is arranged inside each hydraulic jack; the steel stranded wire passes through the right center of the hydraulic jack and is fixed through the work anchor gear; the lower end of the steel stranded wire is provided with a positioning anchor gear; and the positioning anchor gear is directly connected with an integral assembled steel truss. The integral hoisting system and the construction method have the advantages that the concrete is cast before a steel truss roof is hoisted in place; the work procedures are simplified; the workload is reduced; and the construction period is shortened.
Description
Technical field
The invention belongs to Construction of Civil Engineering field, particularly, relate to a kind of heavy roof system Integral lifting system of concrete and construction method of steel truss support.
Background technology
Along with the fast development of national economy, large-scale steel structure venue buildings emerge in multitude, and especially long span steel structure occupies very large proportion wherein.To be steel truss top be in bottom, and the heavy roof system of concrete is wherein more common a kind of form.
Steel truss in the heavy roof structure of the concrete of steel truss support generally has that span is long, volume is large, weight is large, installation accuracy requirement high.According to bulk-breaking high altitude bulk, not only large, the site machinery equipment of assembly, welding job amount is difficult to meet lifting requirements, and required high-altitude spelling moulding bed consumption is many, scaffolding height large, there is very large safety, quality risk.The difficulty of construction is large, be unfavorable for that the steel work field erected duration controls, and the construction method of Integral lifting can address these problems effectively.
While integral lifting method obtains extensive use, also find that this lifting construction method also exists such as concrete pumping equipment and is not easy to reach pouring concrete district, pour into a mould more difficult, the problem such as concrete easily ftractures and in lifting process roof structure attitude is wayward.
Summary of the invention
Concrete for steel truss support weighs the deficiency existing for roof structure feature and integral lifting method and needs the problem of solution badly, and the present invention proposes a kind of Integral lifting system and the construction method that are applicable to the heavy roof structure of concrete of steel truss support.
For achieving the above object, the present invention adopts following technical proposals:
The heavy roof system Integral lifting system of concrete of steel truss support, comprising: hydraulic jack, hydraulic power unit, steel strand, bracing frame, leading truck; Wherein: promote suspension centre and arrange multiple, promote suspension centre and distribute symmetrically; Each lifting suspension centre arranges a bracing frame, and bracing frame is fixed on above peripheral shear wall or support column, and bracing frame arranges hydraulic jack, and hydraulic pressure a thousand pieces of gold top is connected by oil pipe with hydraulic power unit; Hydraulic jack is core-theaded type structure, and there is work ground tackle inside, steel strand from hydraulic jack center through, and to be fixed by work ground tackle; The lower end of steel strand is with location ground tackle, and location ground tackle is directly connected with integral assembling steel truss.
Relative to prior art, the present invention has following beneficial effect: select Roof Truss promote put in place before fluid concrete, simplify operation, save manpower, material, the workload of facility or loss, shorten the duration; Adopt and jump storehouse method piecemeal fluid concrete, effectively control concrete harmful cracks.In Integral lifting process, the hydraulic control device utilizing hoisting mechanism itself to carry and outside monitoring device cooperatively interact, accurately the effective state controlling structure in lifting process.In a word, this construction method for lifting whole have the construction period short, prevent concrete cracking, control accuracy advantages of higher.
Accompanying drawing explanation
Fig. 1 is the structural representation of lifting appliance;
Fig. 2 is that schematic diagram arranged by hydraulic power unit;
Fig. 3 is computer control principle schematic diagram;
Fig. 4 is roof system concrete subregion cast numbering schematic diagram;
In figure: 1, integral assembling steel truss, 2, location ground tackle, 3, steel strand, 4, hydraulic jack, 5, oil pipe, 6, hydraulic power unit, 7, leading truck, 8, safe ground tackle, 91, jack layout points, 92, encoder, 10, bracing frame.
Detailed description of the invention
As shown in Figure 1 and Figure 2, the heavy roof system Integral lifting system of concrete of steel truss support, comprising: hydraulic jack 4, hydraulic power unit 6, steel strand 3, bracing frame 10, leading truck 7; Wherein:
For meeting the requirement of stress equalization in structure lifting process, multiple lifting suspension centre being set, promoting suspension centre and distributing symmetrically; Each lifting suspension centre arranges a bracing frame 10, and bracing frame 10 is fixed on above peripheral shear wall or support column, bracing frame 10 is arranged hydraulic jack 4, bracing frame top and jack layout points 91; Hydraulic pressure a thousand pieces of gold top 4 is connected by oil pipe 5 with hydraulic power unit 6.
Hydraulic jack 4 is core-theaded type structure, and there is work ground tackle inside, and work ground tackle comprises lifting anchor and moveable anchor; Steel strand 3 from hydraulic jack 4 hit exactly through, and to be fixed by work ground tackle; On the top of hydraulic jack, steel strand 3 are provided with safe ground tackle 8; The lower end of steel strand 3 is with location ground tackle 2, and location ground tackle 2 is directly connected with integral assembling steel truss 1.
The workflow that hydraulic power unit 6 drives hydraulic jack 4 to carry out promoting is as follows: hydraulic power unit 6 is by oil pipe 5 to hydraulic jack 4 oil supply, and hydraulic jack goes out cylinder under withstanding on the effect of oil pressure, and inner lifting anchor drives steel strand 3 to rise together; Steel strand 3 are connected with by the integral assembling steel truss 1 promoted by location ground tackle 2, and integral assembling steel truss 1 is promoted with steel strand 3.When fluid gets back to hydraulic power unit 6 by oil pipe 5, jack returns cylinder, and promote anchor effect and remove, the moveable anchor in jack plays a role, and clamping steel strand, prevent the downward slippage of steel strand.Go out cylinder and return in cylinder process to complete complete lifting cycle at jack, circulation steel truss 1 just can promote step by step and put in place so successively.Safe ground tackle 8 mainly plays the safety protection function preventing steel strand from getting loose in lifting process when work anchor lost efficacy; Leading truck 7 is main in lifting process plays combing steel strand, prevents the effect that steel strand are at random.
Hydraulic power unit 6 can drive multiple stage hydraulic jack 4 to promote simultaneously, can keep the synchronism in lifting process better and the quantity of required hydraulic power unit is compared hydraulic oil pump and will greatly be reduced.
As shown in Figure 3, a pumping plant is set to main order point A, chooses two pumps station in addition and be set to first respectively from order point B and second from order point C.The hoisting velocity of hydraulic jack that main order point A controls is set as standard value, as the benchmark of Strategy For Synchronization Control medium velocity and displacement.First dynamically follow the tracks of comparison main order point A from order point C with displacement from order point B, second under control of the computer, ensure that each lifting suspension centre remains synchronous in steel worm-gearing Integral lifting process; Determined the geometrical principle of a plane by 3, ensure steady in whole lifting process of overall structure.
The heavy roof system construction method for lifting whole of concrete of steel truss support, comprises the following steps:
Step 1, completes outer peripheral areas Steel Structure Installation and lower support post, Shear Wall Structure Construction before lifting;
Step 2, roof system steel truss structure to be hoisted completes at installation on ground, and lay floor support plate, the good reinforcing bar of colligation, complete related accessory structure to install, hydraulic jack is placed above lifting bracket, steel strand are penetrated jack, anchorage Node connectedness and installation, connect and debug whole Hoisting System;
Step 3, control system is installed: electrical control lines, oil circuit are connected and debug complete, several idle stroke suitably walked by oil cylinder;
Step 4, system all connect complete and on inspection improve after start up system make steel strand be in the state of tightening up;
Step 5, steel truss structure examination promotes and checks, pre-lift 250mm, after 12 hours, checks whether upper and lower suspension centre and original structure are stablized, confirm errorless after lift structure is arranged spacing, prevent structure from rocking because of loads change; Then placing of concrete above steel truss structure;
Step 6, concreting completes and after initial set, reloads hydraulic rockshaft, then by steel truss structure pre-lift 250mm, after 12 hours, again checks whether upper and lower suspension centre and original structure are stablized, confirm errorless rear formal lifting steel structural;
Step 7, in Integral lifting process, utilizes encoder, total powerstation to carry out Synchronization Control to by lift structure, controls within 2cm by asynchronous value;
Step 8, after Integral lifting structure to installed height mark, suspends and promotes, and finely tunes each and promotes suspension centre and make to be promoted roof structure and aim at the docking port of peripheral structure;
Step 9, rear benefit rod member butt welding completes, and installs closure segment, and hydraulic rockshaft unloads;
Step 10, removes hydraulic rockshaft and upper and lower suspension centre, roof structure installation.
Conventional method is just poured into a mould after steel truss lifting puts in place.Adopt this method can save time clearly, the difficulty of equipment operating and cast when simultaneously decreasing fluid concrete.
Need the Region dividing of fluid concrete be several regions and number roof system according to field condition, carry out according to jumping storehouse method during pouring concrete, first pours into a mould odd numbers region, second batch cast even numbers region; Promote suspension centre 3-4 rice in outmost turns from surrounding and reserve a circle ater-casting, finally pour into a mould.Can effectively reduce and avoid the cracking of later stage concrete pavement like this.
Lifting mechanism control system in this construction method, by being arranged on pressure sensor, encoder 92 and the computer control system in hydraulic jack 4, can realize a series of processes such as data feedback, control instruction transmission, hoisting mechanism action; Monitoring system can the synchronism situation of each Monitoring and Controlling point in reaction lifting process clear, directly perceived, after judging by analysis, determines the corresponding actions of hoisting mechanism.
Method for improving of the present invention and equipment can be widely used in the Integral lifting of the component such as rack, roof system, steel overline bridge of sports palace, conference and exhibition center, swimming hall, hangar, theater, the large-scale public works such as (ship) room of waiting.
Claims (6)
1. the heavy roof system Integral lifting system of the concrete of steel truss support, comprising: hydraulic jack, hydraulic power unit, steel strand, bracing frame, leading truck; It is characterized in that: promote suspension centre and arrange multiple, promote suspension centre and distribute symmetrically; Each lifting suspension centre arranges a bracing frame, and bracing frame is fixed on above peripheral shear wall or support column, and bracing frame arranges hydraulic jack, and hydraulic pressure a thousand pieces of gold top is connected by oil pipe with hydraulic power unit; Hydraulic jack is core-theaded type structure, and there is work ground tackle inside, steel strand from hydraulic jack center through, and to be fixed by work ground tackle; The lower end of steel strand is with location ground tackle, and location ground tackle is directly connected with integral assembling steel truss.
2. the heavy roof system Integral lifting system of the concrete of steel truss support according to claim 1, is characterized in that: a pumping plant is set to main order point A, chooses two pumps station in addition and is set to first respectively from order point B and second from order point C; The hoisting velocity of hydraulic jack that main order point A controls is set as standard value, as the benchmark of Strategy For Synchronization Control medium velocity and displacement; First dynamically follow the tracks of comparison main order point A from order point C with displacement from order point B, second under control of the computer, ensure that each lifting suspension centre remains synchronous in steel worm-gearing Integral lifting process; Determined the geometrical principle of a plane by 3, ensure steady in whole lifting process of overall structure.
3. the heavy roof system Integral lifting system of concrete of the steel truss support according to claim 1-2, is characterized in that: work ground tackle comprises lifting anchor and moveable anchor; On the top of hydraulic jack, steel strand are provided with safe ground tackle.
4. the heavy roof system construction method for lifting whole of the concrete of steel truss support, is characterized in that, comprise the following steps:
Step 1, completes outer peripheral areas Steel Structure Installation and lower support post, Shear Wall Structure Construction before lifting;
Step 2, roof system steel truss structure to be hoisted completes at installation on ground, and lay floor support plate, the good reinforcing bar of colligation, complete related accessory structure to install, hydraulic jack is placed above lifting bracket, steel strand are penetrated jack, anchorage Node connectedness and installation, connect and debug whole Hoisting System;
Step 3, control system is installed: electrical control lines, oil circuit are connected and debug complete, several idle stroke suitably walked by oil cylinder;
Step 4, system all connect complete and on inspection improve after start up system make steel strand be in the state of tightening up;
Step 5, steel truss structure examination promotes and checks, pre-lift 250mm, after 12 hours, checks whether upper and lower suspension centre and original structure are stablized, confirm errorless after lift structure is arranged spacing, prevent structure from rocking because of loads change; Then placing of concrete above steel truss structure;
Step 6, concreting completes and after initial set, reloads hydraulic rockshaft, then by steel truss structure pre-lift 250mm, after 12 hours, again checks whether upper and lower suspension centre and original structure are stablized, confirm errorless rear formal lifting steel structural;
Step 7, in Integral lifting process, utilizes encoder, total powerstation to carry out Synchronization Control to by lift structure, controls within 2cm by asynchronous value;
Step 8, after Integral lifting structure to installed height mark, suspends and promotes, and finely tunes each and promotes suspension centre and make to be promoted roof structure and aim at the docking port of peripheral structure;
Step 9, rear benefit rod member butt welding completes, and installs closure segment, and hydraulic rockshaft unloads;
Step 10, removes hydraulic rockshaft and upper and lower suspension centre, roof structure installation.
5. the heavy roof system construction method for lifting whole of the concrete of steel truss support according to claim 4, it is characterized in that: need the Region dividing of fluid concrete be several regions and number roof system according to field condition, carry out according to jumping storehouse method during pouring concrete, first pours into a mould odd numbers region, second batch cast even numbers region; Promote suspension centre 3-4 rice in outmost turns from surrounding and reserve a circle ater-casting, finally pour into a mould.
6. the heavy roof system construction method for lifting whole of concrete of the steel truss support according to claim 4-5, is characterized in that: lifting construction method is used for the Integral lifting of sports palace, conference and exhibition center, swimming hall, hangar, theater, the rack of waiting, roof system, steel overline bridge.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105064697A (en) * | 2015-07-15 | 2015-11-18 | 安徽跨宇钢结构网架工程有限公司 | Roof grid elevating method |
| CN106437157A (en) * | 2016-11-11 | 2017-02-22 | 上海市机械施工集团有限公司 | Axial force grouping and regulating method for steel support structure |
| CN106522362A (en) * | 2016-12-29 | 2017-03-22 | 上海市机械施工集团有限公司 | Construction device and construction method of steel structure beam of corridor system |
| CN106996195A (en) * | 2016-01-25 | 2017-08-01 | 上海十三冶建设有限公司 | The support and its application method lifted for steel structural overhead |
| CN107299713A (en) * | 2016-04-14 | 2017-10-27 | 中建四局第五建筑工程有限公司 | A kind of circular cone roofing integrally-lifting steel truss and its construction |
| CN107445084A (en) * | 2017-09-22 | 2017-12-08 | 中国建筑第二工程局有限公司 | Hoisting tool and hoisting process for large corridor steel structure |
| CN107806205A (en) * | 2017-09-20 | 2018-03-16 | 中国核工业华兴建设有限公司 | A kind of mounting structure and installation method of unlined steel dome |
| CN109235891A (en) * | 2018-09-04 | 2019-01-18 | 中建八局第三建设有限公司 | A kind of Large Span Prestressed Beam concrete pitched roof jump storehouse method construction method |
| CN109868902A (en) * | 2019-02-25 | 2019-06-11 | 中建四局第一建筑工程有限公司 | A kind of large span steel structure roof entirety lift structure |
| CN109930844A (en) * | 2019-03-19 | 2019-06-25 | 上海建工七建集团有限公司 | Steel vestibule is integrally promoted with steel strand wires guide frame system and its installation method |
| CN112227773A (en) * | 2020-09-14 | 2021-01-15 | 中国二十冶集团有限公司 | Movie theater auditorium shakes structure |
| CN115324364A (en) * | 2022-08-25 | 2022-11-11 | 中轻(广州)钢结构有限公司 | Steel structure roof truss sliding construction method |
| CN116002553A (en) * | 2023-02-10 | 2023-04-25 | 北京市建筑工程研究院有限责任公司 | Intelligent synchronous hydraulic lifting system suitable for cable structure and use method |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105064697A (en) * | 2015-07-15 | 2015-11-18 | 安徽跨宇钢结构网架工程有限公司 | Roof grid elevating method |
| CN106996195A (en) * | 2016-01-25 | 2017-08-01 | 上海十三冶建设有限公司 | The support and its application method lifted for steel structural overhead |
| CN107299713A (en) * | 2016-04-14 | 2017-10-27 | 中建四局第五建筑工程有限公司 | A kind of circular cone roofing integrally-lifting steel truss and its construction |
| CN106437157A (en) * | 2016-11-11 | 2017-02-22 | 上海市机械施工集团有限公司 | Axial force grouping and regulating method for steel support structure |
| CN106437157B (en) * | 2016-11-11 | 2020-02-21 | 上海市机械施工集团有限公司 | Grouping regulation and control method for axial force of steel support structure |
| CN106522362A (en) * | 2016-12-29 | 2017-03-22 | 上海市机械施工集团有限公司 | Construction device and construction method of steel structure beam of corridor system |
| CN107806205A (en) * | 2017-09-20 | 2018-03-16 | 中国核工业华兴建设有限公司 | A kind of mounting structure and installation method of unlined steel dome |
| CN107445084A (en) * | 2017-09-22 | 2017-12-08 | 中国建筑第二工程局有限公司 | Hoisting tool and hoisting process for large corridor steel structure |
| CN109235891A (en) * | 2018-09-04 | 2019-01-18 | 中建八局第三建设有限公司 | A kind of Large Span Prestressed Beam concrete pitched roof jump storehouse method construction method |
| CN109868902A (en) * | 2019-02-25 | 2019-06-11 | 中建四局第一建筑工程有限公司 | A kind of large span steel structure roof entirety lift structure |
| CN109930844A (en) * | 2019-03-19 | 2019-06-25 | 上海建工七建集团有限公司 | Steel vestibule is integrally promoted with steel strand wires guide frame system and its installation method |
| CN112227773A (en) * | 2020-09-14 | 2021-01-15 | 中国二十冶集团有限公司 | Movie theater auditorium shakes structure |
| CN115324364A (en) * | 2022-08-25 | 2022-11-11 | 中轻(广州)钢结构有限公司 | Steel structure roof truss sliding construction method |
| CN116002553A (en) * | 2023-02-10 | 2023-04-25 | 北京市建筑工程研究院有限责任公司 | Intelligent synchronous hydraulic lifting system suitable for cable structure and use method |
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Application publication date: 20150304 |