CN104612409A - Pipe truss structure single pipe supporting sorted unloading tool and using method thereof - Google Patents
Pipe truss structure single pipe supporting sorted unloading tool and using method thereof Download PDFInfo
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- CN104612409A CN104612409A CN201410819346.4A CN201410819346A CN104612409A CN 104612409 A CN104612409 A CN 104612409A CN 201410819346 A CN201410819346 A CN 201410819346A CN 104612409 A CN104612409 A CN 104612409A
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Abstract
The invention discloses a pipe truss structure single pipe supporting sorted unloading tool and a using method of the pipe truss structure single pipe supporting sorted unloading tool. The pipe truss structure single pipe supporting sorted unloading tool comprises a supporting frame, an unloading transition support, a jack, a steel bracket and multilevel steel base plates, wherein the unloading transition support is connected to the upper side of the supporting frame, the jack is arranged at the top of the supporting frame and located in the unloading transmission support, the steel bracket is arranged on a lower opening of a lower chord of a pipe truss in a supporting mode, the multilevel steel base plates are arranged on the unloading transmission support and used for supporting the steel bracket, and the jacking portion of the jack stretches out of the top end of the unloading transmission support. Unloading is carried out by disassembling the steel base plates step by step, the sorted unloading quantity is visually controlled according to the thickness of each steel plate, unloading precision is guaranteed, balance and uniformity in the unloading process are guaranteed, and the observation quantity is reduced in the unloading process.
Description
Technical field
The present invention relates to large span steel truss and large-span space field of steel structure construction, specifically a kind of tube truss structure single tube supports load shedding frock and using method thereof.
Background technology
Large-span steel or spatial steel structure, owing to pursuing building usage space and moulding needs and the structure design strong point is often less, need to arrange temporary support to meet Steel Structure Installation needs in large-span steel installation process, ensure the amount of deflection of each truss structure structure in installation process, be out of shape at claimed range, guarantee the safe and reliable of constructure scheme; Particularly the structural element installed of segmentation, needs to complete installation at high altitude by installing temporary support in fragment bit, meet assembled after overall line style, amount of deflection and distortion, ensure the safe and reliable of work progress.Complete in the integral installation of main body steel work, and complete all welding jobs, and after inspection, need to carry out entirety unloading to the main structure formed.The demolishing process of structure unloading and bracing frame is the process of a Program for structural Transformation, and malformation and internal force will be redistributed, and the support reaction of bracing frame also can change along with offload scheme and sequence of unloading difference.Machine analog computation is as calculated gone out to the truss of the larger supporting point position of distortion, in order to ensure that the compatibility of deformation in uninstall process of overall structure component and temporary support, not recurring structure destroy, ensure structure by Construction State slowly excessively to design point simultaneously, need to take classification, synchronous, balanced discharging method, unload according to rational sequence of unloading.
How to take reasonable plan to control in classification sync equalizing uninstall process to unload variable to ensure its synchronous, that harmony is this discharging method key and core.Steel work unloading and load shedding, two kinds of methods below the many employings of current technology carry out control variables:
That a unified key observation point is set on each truss structure component, by setting up the absolute displacement values of CCP on Instrument observation component as control variables foundation.The method has the following disadvantages: (1) is complicated for building, structural configuration, and the project survey instrument erection difficulty of field condition difference causes being difficult to observation, namely allows to erection instrument but reduces operating efficiency; (2) its shape of different truss may be different, cause CCP disunity, the deformation direction of its uninstall process of observation point of different component, different parts is different with amplitude, need after observation to determine that a truss structure is as benchmark control point, other points are by the absolute displacement values of observation, the uniformity that relative displacement carrys out control variables is extrapolated at integrated structure calculating somatotype model and benchmark control point again, the accuracy that variation controls and efficiency of construction, and safety is difficult to be guaranteed;
Another kind is by observing the jack stroke of each unloading point support, top control to unload variable.The method has the following disadvantages: (1) each unloading point reduces control stroke by manual operation jack, and each point Variable Control error is relatively large, and unloading synchronism is difficult to accomplish accurate control.(2) each strong point will carry out the observation of many wheels to control discharging quantity, and survey engineering amount is large, and construction unloading efficiency is low.(3) jack is directly arranged at the top of support, and himself stability, safety are difficult to ensure.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of tube truss structure single tube and supports load shedding frock and using method thereof, control load shedding amount, guarantee unloading precision and the harmony in uninstall process and unity, the surveying work in uninstall process can be reduced in a large number.
Technical scheme of the present invention is:
A kind of tube truss structure single tube supports load shedding frock, include bracing frame, be connected to unloading transition bracket above bracing frame, be arranged at bracing frame top and be positioned at unloading transition bracket jack, support be arranged at tubular truss lower chord end opening steel rest, be arranged at the multistage billet for supporting steel rest on unloading transition bracket, the holding unit of described jack is stretched out from unloading transition bracket top.
Described multistage billet includes the composite steel backing plate that two groups are respectively arranged with jacking portion both sides, and the same layer of two groups of billets is one-level.
Described bracing frame includes steel pipe support and is arranged at the roof supporting at steel pipe support top, described unloading transition bracket includes base plate, be fixedly connected on the vertical support bar on base plate and be fixedly connected on the top board of vertical supporting bar top, described roof supporting is fixedly connected with the base plate of unloading transition bracket, described jack is positioned at the region that vertical support bar surrounds, described multistage billet is arranged on the top board of unloading transition bracket, and the holding unit of jack is passed from the top board of unloading transition bracket.
Described multistage billet is grade III steel backing plate.
Tube truss structure single tube supports a using method for load shedding frock, comprises the following steps:
(1), to overall structure carry out Construction Course Analysis checking computations, determine the discharging quantity numerical value at each single-point support place;
(2), welding inspection and examination are carried out to overall structure, after meeting unloading requirement, operate jack by tubular truss together with the slight jack-up of steel rest, then the billet of top one-level is removed, finally operate jack more slowly tubular truss to be declined together with steel rest, tubular truss is unloaded to the top of second level billet together with steel rest, completes first order unloading;
(3), necessary inspection and monitoring are carried out to overall structure, after guaranteeing that structure is without exception, operate jack by tubular truss together with the slight jack-up of steel rest, then most secondary billet is removed, finally operate jack more slowly tubular truss to be declined together with steel rest, tubular truss is unloaded to the top of third level billet together with steel rest, completes second level unloading;
(4), repeat step (2) or (3) subordinate is unloaded one by one, after the synchronous unloaded operation of classification completes, overall structure is observed comprehensively, determines that discharging quantity is consistent with the analysis checking computation results of step (1).
Analysis checking computations in described step (1) adopt structural calculation and sequential construction analysis software.
The billet of described every one-level includes the billet that two are arranged at jack both sides respectively, and when removing the billet of every one-level, two billets are removed simultaneously.
Advantage of the present invention:
The present invention, by progressively removing billet at different levels to unload, controls load shedding amount intuitively by the thickness of every block plate, guarantees unloading precision and the harmony in uninstall process and unity, can reduce the observation quantity in uninstall process in a large number.Solve in prior art arrange on each tubular truss measure measurement inconvenience that observation point brings and pendulous frequency too much, each control point needs to check through calculating the uniformity determining discharging quantity, and its intricate operation, the degree of accuracy are difficult to the drawbacks such as guarantee.The present invention unloads transition bracket for supporting billet at different levels, jack is placed in unloading transition bracket simultaneously, guarantees the safety and stability in jack descending operation process, this frock is safe and reliable, unloading precision is high, can improve construction and unload mounted mass and safety, and can significantly improve efficiency of construction.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
A kind of tube truss structure single tube supports load shedding frock, include steel pipe support 1, be arranged at the roof supporting 2 at steel pipe support 1 top, be fixedly connected on the unloading transition bracket above roof supporting 2, be arranged at roof supporting 2 upper surface and be positioned at the jack 4 unloading transition bracket, support the steel rest 6 being arranged at tubular truss lower chord 5 end opening, be arranged at the grade III steel backing plate 71 for supporting steel rest 6 on unloading transition bracket, 72, 73, the holding unit of jack 4 is stretched out from unloading transition bracket 3 top, grade III steel backing plate 71, 72, 73 include the compound steel backing plate that two groups are respectively arranged with jack 4 holding unit both sides, the same layer of two groups of billets is one-level,
Wherein, unloading transition bracket includes base plate 31, is fixedly connected on the vertical support bar 32 on base plate 31 and is fixedly connected on the top board 33 on four vertical support bar 32 tops, roof supporting 2 is fixedly connected with the base plate 31 of unloading transition bracket, jack 4 is positioned at the region that vertical support bar 32 surrounds, grade III steel backing plate 71,72,73 are arranged on the top board 33 of unloading transition bracket, and the holding unit of jack 4 is passed from the top board 33 of unloading transition bracket.
Tube truss structure single tube supports a using method for load shedding frock, comprises the following steps:
(1), adopt structural calculation and sequential construction analysis software to carry out Construction Course Analysis checking computations to overall structure, determine the discharging quantity numerical value at each single-point support place;
(2), welding inspection and examination are carried out to overall structure, after meeting unloading requirement, operate jack 4 by tubular truss 5 together with the slight jack-up of steel rest 6, then the billet 71 of top one-level is removed, two billets are removed simultaneously, finally operate jack 4 more slowly tubular truss 5 to be declined together with steel rest 6, tubular truss 5 is unloaded to the top of second level billet 72 together with steel rest 6, complete first order unloading;
(3), necessary inspection and monitoring are carried out to overall structure, after guaranteeing that structure is without exception, operate jack 4 by tubular truss 5 together with the slight jack-up of steel rest 6, then most secondary billet 72 is removed, finally operate jack 4 more slowly tubular truss 5 to be declined together with steel rest 6, tubular truss 5 is unloaded to the top of third level billet 73 together with steel rest 6, completes second level unloading;
(4), repeat step (2) or (3) to unload lowermost end third level billet 71, after the synchronous unloaded operation of classification completes, overall structure is observed comprehensively, determines that discharging quantity is consistent with the analysis checking computation results of step (1), remove unloading transition bracket and steel pipe support.
When making unloading transition bracket and determining its height, need the deflection according to the Support Position that computer configuation calculates and sequential construction analysis software calculates, reserved certain gap between the top board 33 of steel rest 6 and unloading transition bracket is made, for the dismounting of checking adjustment and convenient unloading transition bracket of final discharging quantity after considering the unloading of lowermost end one-level.
Claims (7)
1. a tube truss structure single tube supports load shedding frock, it is characterized in that: include bracing frame, be connected to unloading transition bracket above bracing frame, be arranged at bracing frame top and be positioned at unloading transition bracket jack, support be arranged at tubular truss lower chord end opening steel rest, be arranged at the multistage billet for supporting steel rest on unloading transition bracket, the holding unit of described jack is stretched out from unloading transition bracket top.
2. a kind of tube truss structure single tube according to claim 1 supports load shedding frock, it is characterized in that: described multistage billet includes the composite steel backing plate that two groups are respectively arranged with jacking portion both sides, the same layer of two groups of billets is one-level.
3. a kind of tube truss structure single tube according to claim 1 supports load shedding frock, it is characterized in that: described bracing frame includes steel pipe support and is arranged at the roof supporting at steel pipe support top, described unloading transition bracket includes base plate, be fixedly connected on the vertical support bar on base plate and the top board being fixedly connected on vertical supporting bar top, described roof supporting is fixedly connected with the base plate of unloading transition bracket, described jack is positioned at the region that vertical support bar surrounds, described multistage billet is arranged on the top board of unloading transition bracket, the holding unit of jack is passed from the top board of unloading transition bracket.
4. a kind of tube truss structure single tube according to claim 1 supports load shedding frock, it is characterized in that: described multistage billet is grade III steel backing plate.
5. a kind of tube truss structure single tube according to claim 1 supports the using method of load shedding frock, it is characterized in that, comprises the following steps:
(1), to overall structure carry out Construction Course Analysis checking computations, determine the discharging quantity numerical value at each single-point support place;
(2), welding inspection and examination are carried out to overall structure, after meeting unloading requirement, operate jack by tubular truss together with the slight jack-up of steel rest, then the billet of top one-level is removed, finally operate jack more slowly tubular truss to be declined together with steel rest, tubular truss is unloaded to the top of second level billet together with steel rest, completes first order unloading;
(3), necessary inspection and monitoring are carried out to overall structure, after guaranteeing that structure is without exception, operate jack by tubular truss together with the slight jack-up of steel rest, then most secondary billet is removed, finally operate jack more slowly tubular truss to be declined together with steel rest, tubular truss is unloaded to the top of third level billet together with steel rest, completes second level unloading;
(4), repeat step (2) or (3) subordinate is unloaded one by one, after the synchronous unloaded operation of classification completes, overall structure is observed comprehensively, determines that discharging quantity is consistent with the analysis checking computation results of step (1).
6. a kind of tube truss structure single tube according to claim 5 supports the using method of load shedding frock, it is characterized in that: the analysis checking computations in described step (1) adopt structural calculation and sequential construction analysis software.
7. a kind of tube truss structure single tube according to claim 5 supports the using method of load shedding frock, it is characterized in that: the billet of described every one-level includes the billet that two are arranged at jack both sides respectively, when removing the billet of every one-level, two billets are removed simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410819346.4A CN104612409A (en) | 2014-12-25 | 2014-12-25 | Pipe truss structure single pipe supporting sorted unloading tool and using method thereof |
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| CN201410819346.4A CN104612409A (en) | 2014-12-25 | 2014-12-25 | Pipe truss structure single pipe supporting sorted unloading tool and using method thereof |
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| CN104612409A true CN104612409A (en) | 2015-05-13 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106049886A (en) * | 2016-07-28 | 2016-10-26 | 武汉卡特工业股份有限公司 | Rigid pull rod heavy load lifting and lowering device |
| CN106836498A (en) * | 2016-12-28 | 2017-06-13 | 郑州工业应用技术学院 | A kind of super-span Stadium roof system steel truss lifting construction engineering method |
| CN112392259A (en) * | 2020-12-09 | 2021-02-23 | 北京建工集团有限责任公司 | Synchronous grading unloading method for steel truss with jacking oil cylinder replaced by double supporting points |
| CN112392261A (en) * | 2020-10-20 | 2021-02-23 | 中冶(上海)钢结构科技有限公司 | Construction method for stably converting support system after slippage of large-span steel roof is completed |
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| CN102936962A (en) * | 2012-11-20 | 2013-02-20 | 永升建设集团有限公司 | Construction method of slanting cantilever steel structure supported by temporary steel frame |
| CN202899636U (en) * | 2012-11-14 | 2013-04-24 | 中冶天工集团有限公司 | Discrete assembly device of large-span rectangular space twisted pipe truss |
| JP5318538B2 (en) * | 2008-11-17 | 2013-10-16 | 鉄建建設株式会社 | Steel structure construction method |
| CN203640309U (en) * | 2013-09-24 | 2014-06-11 | 中国十七冶集团有限公司 | Adjustable pipe carrier used on large-span steel structure roof primary truss general assembly jig frame |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106049886A (en) * | 2016-07-28 | 2016-10-26 | 武汉卡特工业股份有限公司 | Rigid pull rod heavy load lifting and lowering device |
| CN106049886B (en) * | 2016-07-28 | 2018-08-21 | 武汉卡特工业股份有限公司 | A kind of push-and-pull rod heavy duty promotion and downward putting device |
| CN106836498A (en) * | 2016-12-28 | 2017-06-13 | 郑州工业应用技术学院 | A kind of super-span Stadium roof system steel truss lifting construction engineering method |
| CN106836498B (en) * | 2016-12-28 | 2022-11-29 | 郑州工业应用技术学院 | Hoisting construction method for steel truss of grand stand roof of super-large span stadium |
| CN112392261A (en) * | 2020-10-20 | 2021-02-23 | 中冶(上海)钢结构科技有限公司 | Construction method for stably converting support system after slippage of large-span steel roof is completed |
| CN112392259A (en) * | 2020-12-09 | 2021-02-23 | 北京建工集团有限责任公司 | Synchronous grading unloading method for steel truss with jacking oil cylinder replaced by double supporting points |
| CN112392259B (en) * | 2020-12-09 | 2022-02-01 | 北京建工集团有限责任公司 | Synchronous grading unloading method for steel truss with jacking oil cylinder replaced by double supporting points |
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Application publication date: 20150513 |
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