CN102644386A - Unloading control method for steel structure temporary bracing - Google Patents
Unloading control method for steel structure temporary bracing Download PDFInfo
- Publication number
- CN102644386A CN102644386A CN2012101323237A CN201210132323A CN102644386A CN 102644386 A CN102644386 A CN 102644386A CN 2012101323237 A CN2012101323237 A CN 2012101323237A CN 201210132323 A CN201210132323 A CN 201210132323A CN 102644386 A CN102644386 A CN 102644386A
- Authority
- CN
- China
- Prior art keywords
- unloading
- jack
- stroke
- control method
- steel work
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
Disclosed is an unloading control method for steel structure temporary bracing. The method comprises that simulation analysis of an overall construction process of an integral structure is performed, so that unloading quantities of various bracing points on a temporary bracing structure are determined, the integral structure comprises a main structure and the temporary bracing structure, and jacks are respectively arranged at positions of the bracing points on the temporary bracing structure for supporting the main structure; unloading is performed through adjustment of routes of the jacks; route changes of the jacks are measured based on the unloading quantities determined by the simulation analysis, so that the routes of the jacks are in accordance with the unloading quantities of corresponding bracing points determined by the simulation analysis; and the next step of unloading is performed in the same way, and finally synchronous unloading is achieved through grading sorted unloading. The unloading control method has the advantages that the routes of the jacks are used as control variables in unloading construction of the steel structure temporary bracing, the unloading quantities can be controlled accurately, real-time measurement is performed conveniently, the accuracy is high, the safety is guaranteed, and the like.
Description
Technical field
The present invention relates to a kind of Construction of Steel Structure technical field, relate in particular to a kind of steel work and support the Unloading Control method temporarily.
Background technology
It is technology crucial in the Pre-tensioned Steel Structures that steel work supports Unloading Technology temporarily; Offload scheme implements whether rationally to be related to the safety of agent structure and temporary structure and the quality of agent structure; Reasonably discharging method not only guarantees the safety of structure, and simple to operate easy to implement.
The control variables of unloading is the key of Unloading Technology, and existing interim discharge mechanism that supports and method all are that counter-force with the absolute displacement of key point on the agent structure or jack is as control variables.See also Fig. 1 and Fig. 2, Fig. 1 is the preceding structural representation of agent structure unloading; Fig. 2 supports the structural representation of download apparatus temporarily for existing steel work.Visible by Fig. 1, agent structure 1 before unloading, through temporary support structure 2 and on interim bracing frame 3 support.Visible by Fig. 2; Existing steel work supports the level measurement instrument 5 that discharge mechanism comprises jack 4 and is used to measure the absolute altitude of the level measurement point 6 on the agent structure 1 temporarily, and said jack 4 is arranged at and supports said agent structure 1 on the said temporary support structure 2.
The weak point of existing Unloading Control method is:
(1) is difficult to measure; Although can adopt measuring apparatus (like total powerstation, level gauge) to measure the absolute displacement of key point, when supporting unloading for complicacy, the absolute displacement of key point is always not downward temporarily; And might make progress, like the Grand National Theatre steel sheel; And with jack counter-force as control variables, the scene can't real-time measurement.
(2) inconvenient operation, no matter be absolute displacement or jack counter-force as control variables, on-the-spot unloading workman operation is all inconvenient.
(3) can't compare in real time with simulation analysis result of calculation, be difficult to control, safety is difficult to guarantee.
Therefore; How a kind of equilibrium that can effectively control discharging quantity, guarantee discharging quantity in the uninstall process is provided, and guarantees that it is the technical problem that those skilled in the art need to be resolved hurrily that steel work that steel work supports the quality of safety and agent structure in the uninstall process temporarily supports the Unloading Control method temporarily.
Summary of the invention
The object of the present invention is to provide a kind of steel work to support the Unloading Control method temporarily; It adopts the stroke of jack to be used for steel work as control variables and supports the unloading construction temporarily; Can effectively control discharging quantity; Guarantee the equilibrium of discharging quantity in the uninstall process, guarantee that steel work supports safety and the quality of agent structure in the uninstall process temporarily.
In order to reach above-mentioned purpose, the present invention adopts following technical scheme:
The invention discloses a kind of steel work and support the Unloading Control method temporarily, comprise the steps:
The first step; Overall structure is carried out the construction overall process simulation analysis; To confirm the discharging quantity of each strong point on the temporary support structure; Said overall structure comprises agent structure and temporary support structure, and each supporting point position on the said temporary support structure is provided with jack respectively in order to support said agent structure;
In second step, implement unloading through the stroke of regulating each jack;
In the 3rd step, the discharging quantity of confirming with simulation analysis is a foundation, and the stroke of measuring each jack changes, and the discharging quantity of the respective support point that the stroke that makes each jack and simulation analysis are definite conforms to;
The 4th step, implement the next round unloading so in regular turn, final through load shedding realization unloading synchronously stage by stage.
Preferably, support in the Unloading Control method at above-mentioned steel work, said jack is the fluid pressure type jack temporarily, in said second step, through regulating the stroke that the inner hydraulic pressure size of jack is regulated jack.
Preferably, support in the Unloading Control method at above-mentioned steel work, said jack is spiral jack temporarily, in said second step, regulates the stroke of jack through rotating screw.
Beneficial effect of the present invention is following:
Steel work provided by the invention supports the Unloading Control method temporarily; The stroke that adopts the jack that unloads usefulness is as control variables; With the compression absolute displacement amount of jack control criterion, can solve in the prior art with the counter-force of the absolute displacement of agent structure key point or jack a series of problems as control variables as the scene unloading.Through whole process simulation analytical calculation structure discharging quantity, calculated value is more accurate, and unloading equipment is chosen and scheme confirms to have important function; Stroke variable quantity through measuring jack confirms that the discharging quantity operation is succinct, simple to operate, measures intuitively specifically, more meets structure feature; The stroke of jack has been avoided the interference of agent structure, temporary support structure, foundation deformation as discharging quantity; Different unloading points are easy to realize the Synchronization Control of discharging quantity.In a word, steel work provided by the invention supports discharge mechanism temporarily, can be widely used in steel work and support in the unloading construction temporarily, and it has easy to operate; Real-time measurement is easy, precision is high; Advantages such as the result is consistent with simulation analysis, and safety is secure.
Description of drawings
Steel work of the present invention supports the Unloading Control method temporarily and is provided by following embodiment and accompanying drawing.
Fig. 1 is the preceding structural representation of agent structure unloading.
Fig. 2 supports the structural representation of Unloading Control method temporarily for existing steel work.
Fig. 3 supports the steel work support sketch map before the Unloading Control method is implemented for the steel work of one embodiment of the invention temporarily.
Fig. 4 supports the contrast sketch map of Unloading Control method unloading front and back temporarily for the steel work of one embodiment of the invention.
Fig. 5 supports the flow chart of Unloading Control method temporarily for the steel work of one embodiment of the invention.
Among the figure, 1-agent structure, 2-temporary support structure, 3-falsework, 4-jack, 5-level measurement instrument, 6-level measurement point, the stroke of 7-jack.
The specific embodiment
Below will support the Unloading Control method to steel work of the present invention does further to describe in detail temporarily.
Below with reference to accompanying drawings the present invention is described in more detail, has wherein represented the preferred embodiments of the present invention, should be appreciated that those skilled in the art can revise the present invention described here and still realize advantageous effects of the present invention.Therefore, following description is appreciated that extensively knowing to those skilled in the art, and not as limitation of the present invention.
For clear, whole characteristics of practical embodiments are not described.In following description, be not described in detail known function and structure, because they can make the present invention because unnecessary details and confusion.Will be understood that in the exploitation of any practical embodiments, must make a large amount of implementation details, for example, change into another embodiment by an embodiment according to relevant system or relevant commercial restriction to realize developer's specific objective.In addition, will be understood that this development possibly be complicated and time-consuming, but only be routine work to those skilled in the art.
For making the object of the invention, characteristic more obviously understandable, be further described below in conjunction with the accompanying drawing specific embodiments of the invention.What need explanation is, accompanying drawing all adopts the form of simplifying very much and all uses non-ratio accurately, only in order to convenient, the purpose of the aid illustration embodiment of the invention lucidly.
See also Fig. 3 and Fig. 4, wherein, Fig. 3 supports the structural representation of discharge mechanism temporarily for the steel work of one embodiment of the invention.Fig. 4 supports the contrast sketch map of discharge mechanism unloading front and back temporarily for the steel work of one embodiment of the invention.
See also Fig. 5, please combine to consult Fig. 3 and Fig. 4 simultaneously, the steel work of one embodiment of the invention supports the Unloading Control method temporarily, comprises the steps:
The first step; Overall structure is carried out the construction overall process simulation analysis; To confirm the discharging quantity of each strong point on the temporary support structure 2; Said overall structure comprises agent structure 1 and temporary support structure 2, and each supporting point position on the said temporary support structure 2 is provided with jack respectively in order to support said agent structure 1.Through the discharging quantity of each strong point on each temporary support structure 2 of whole process simulation analytical calculation, calculated value is more accurate, and unloading equipment is chosen and scheme confirms to have important function.
In second step, implement unloading through the stroke 7 of regulating each jack.In the present embodiment, said jack 4 is fluid pressure type jack, can be through regulating the stroke 7 that the inner hydraulic pressure size of jack is regulated jack.Certainly, said jack 4 also can be spiral jack, and it can regulate the stroke 7 of jack through rotating screw.
In the 3rd step, the discharging quantity of confirming with simulation analysis (promptly theoretical) is a foundation, and the stroke 7 of measuring each jack changes, and the discharging quantity of the respective support point that the stroke 7 that makes each jack and simulation analysis are definite conforms to.
The 4th step, implement the next round unloading so in regular turn, final through load shedding realization unloading synchronously stage by stage.Because the process more complicated of unloading, generally for the unloading of the more strong point, can not directly lay down the jack on the strong point 4 is disposable, but must be, through too much round, progressively unloading is positioned at the jack 4 of each strong point according to certain flow process.For example, strong point 10cm that finally will descend, the distance that all the other strong points descend is not necessarily the same; Might be 8cm, 7cm, during the first round, all strong points can all descend once in proportion; Like 10mm, 8mm, 7mm etc.; Afterwards, begin second successively and take turns unloading, third round unloading ...., final through load shedding realization unloading synchronously stage by stage.The distance that round can unload according to actual needs is provided with.Different unloading points are easy to realize the Synchronization Control of discharging quantity.
The steel work of the foregoing description supports the Unloading Control method temporarily, promptly confirms discharging quantity through the stroke 7 of employing jack as control variables, not only can have succinct, simple to operate the having a few of operation so that measure more intuitively specifically; And the stroke 7 that adopts jack more meets structure feature as control variables, shows that through repeatedly testing its actual mechanical process and whole process simulation analysis are very identical, thereby has effectively guaranteed the safety of uninstall process.In addition, the stroke 7 of jack can be avoided the interference of agent structure 1, temporary support structure 2 and foundation settlement distortion as discharging quantity.In addition, different unloading points are easy to realize the Synchronization Control of discharging quantity.
Steel work at present embodiment supports in the Unloading Control method temporarily, and said jack 4 adopts the fluid pressure type jack, in said second step, through regulating the stroke 7 that jack 4 inner hydraulic pressure sizes are regulated jack.Certainly; Said jack 4 also can adopt other structure, for example is spiral jack, when said jack adopts spiral jack; In said second step, can regulate the stroke 7 of jack through rotating screw (promptly regulating the rotating cycle and the angle of jack 4).
In sum; Steel work provided by the invention supports the Unloading Control method temporarily; The stroke that adopts the jack that unloads usefulness is as control variables; With the compression absolute displacement amount of jack control criterion, can solve a series of problems of the counter-force of existing absolute displacement or jack with the agent structure key point as control variables as the scene unloading.Through whole process simulation analytical calculation structure discharging quantity, calculated value is more accurate, and unloading equipment is chosen and scheme confirms to have important function; Stroke through measuring jack confirms that the discharging quantity operation is succinct, and is simple to operate; Confirm that through the stroke of measuring jack the discharging quantity measurement is directly perceived concrete, more meet structure feature; The stroke of jack has been avoided the interference of agent structure, temporary support structure and foundation settlement distortion as discharging quantity; Different unloading points are easy to realize the Synchronization Control of discharging quantity.In a word, steel work provided by the invention supports the Unloading Control method temporarily, can be widely used in steel work and support in the unloading construction temporarily, and it has easy to operate; Real-time measurement is easy, precision is high; Be consistent safety advantage such as secure with the result of simulation analysis.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (3)
1. a steel work supports the Unloading Control method temporarily, it is characterized in that, comprises the steps:
The first step; Overall structure is carried out the construction overall process simulation analysis; To confirm each strong point discharging quantity on the temporary support structure; Said overall structure comprises agent structure and temporary support structure, and each supporting point position on the temporary support structure is provided with jack respectively in order to support said agent structure;
In second step, implement unloading through the stroke of regulating each jack;
In the 3rd step, the discharging quantity of confirming with simulation analysis is a foundation, and the stroke of measuring each jack changes, and the discharging quantity of the respective support point that the stroke that makes each jack and simulation analysis are definite conforms to;
The 4th step, implement the next round unloading so in regular turn, final through load shedding realization unloading synchronously stage by stage.
2. steel work according to claim 1 supports the Unloading Control method temporarily, it is characterized in that, said jack is the fluid pressure type jack, in said second step, through regulating the stroke that the inner hydraulic pressure size of jack is regulated jack.
3. steel work according to claim 1 supports the Unloading Control method temporarily, it is characterized in that, said jack is spiral jack, in said second step, regulates the stroke of jack through rotating screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101323237A CN102644386A (en) | 2012-04-28 | 2012-04-28 | Unloading control method for steel structure temporary bracing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101323237A CN102644386A (en) | 2012-04-28 | 2012-04-28 | Unloading control method for steel structure temporary bracing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102644386A true CN102644386A (en) | 2012-08-22 |
Family
ID=46657443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101323237A Pending CN102644386A (en) | 2012-04-28 | 2012-04-28 | Unloading control method for steel structure temporary bracing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102644386A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954896A (en) * | 2012-11-14 | 2013-03-06 | 中冶天工集团有限公司 | Unloading analysis method for installation of large-span space steel structure |
| CN103452328A (en) * | 2013-07-08 | 2013-12-18 | 中冶天工上海十三冶建设有限公司 | Device and method for decreasing columns and reinforcing girders of reinforced concrete members |
| CN104787695A (en) * | 2015-03-16 | 2015-07-22 | 中建钢构有限公司 | Hydraulic supporting device for temporarily supporting and detaching steel structure and use method of hydraulic supporting device |
| CN104878951A (en) * | 2015-06-10 | 2015-09-02 | 浙江核力建筑特种技术有限公司 | Embedded type controllable unloader |
| CN105442866A (en) * | 2014-08-28 | 2016-03-30 | 上海宝冶集团有限公司 | Protective dismantle and assembly method for large-scale towering steel structures |
| CN106181206A (en) * | 2016-08-26 | 2016-12-07 | 厦门鑫创好钢结构有限公司 | The auxiliary equipment that steel structure bridge manufactures can be used in |
| CN106760596A (en) * | 2016-12-07 | 2017-05-31 | 上海市机械施工集团有限公司 | The construction method of large-span steel is added a cover above bearing capacity restricted structure |
| CN107558738A (en) * | 2017-08-18 | 2018-01-09 | 武汉大学 | Build the vertical displacement automatic balancing method of reverse dismounting |
| CN113404329A (en) * | 2021-06-15 | 2021-09-17 | 中建科工集团有限公司 | Unloading method of temporary support structure |
| CN114997030A (en) * | 2022-08-03 | 2022-09-02 | 上海建工集团股份有限公司 | Temporary support unloading sequence and unloading amount determining method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020090425A (en) * | 2001-05-25 | 2002-12-05 | 주식회사 한진중공업 | A method to remove steel post inducing local buckling after completion of bridge erection to use it |
| CN201771196U (en) * | 2010-07-08 | 2011-03-23 | 中建钢构有限公司 | Disassembling tooling for steel structures |
-
2012
- 2012-04-28 CN CN2012101323237A patent/CN102644386A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020090425A (en) * | 2001-05-25 | 2002-12-05 | 주식회사 한진중공업 | A method to remove steel post inducing local buckling after completion of bridge erection to use it |
| CN201771196U (en) * | 2010-07-08 | 2011-03-23 | 中建钢构有限公司 | Disassembling tooling for steel structures |
Non-Patent Citations (4)
| Title |
|---|
| 伍小平，高振锋，李子旭: "国家大剧院钢壳体施工全过程模拟分析", 《建筑结构学报》, vol. 26, no. 5, 31 October 2005 (2005-10-31) * |
| 伍小平等: "国家大剧院钢壳体安装中卸载方案分析", 《建筑施工》, vol. 27, no. 6, 30 June 2005 (2005-06-30) * |
| 孙会社等: "济南市奥体中心体育场罩棚钢结构工程的卸载施工技术", 《工程质量》, vol. 28, no. 3, 31 March 2010 (2010-03-31) * |
| 庞京辉等: "钢结构支撑体系卸载技术", 《建筑技术》, vol. 42, no. 11, 30 November 2011 (2011-11-30) * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954896A (en) * | 2012-11-14 | 2013-03-06 | 中冶天工集团有限公司 | Unloading analysis method for installation of large-span space steel structure |
| CN103452328A (en) * | 2013-07-08 | 2013-12-18 | 中冶天工上海十三冶建设有限公司 | Device and method for decreasing columns and reinforcing girders of reinforced concrete members |
| CN105442866A (en) * | 2014-08-28 | 2016-03-30 | 上海宝冶集团有限公司 | Protective dismantle and assembly method for large-scale towering steel structures |
| CN105442866B (en) * | 2014-08-28 | 2017-12-19 | 上海宝冶集团有限公司 | Protective demolition and installation method for large-scale highrise steel structure |
| CN104787695A (en) * | 2015-03-16 | 2015-07-22 | 中建钢构有限公司 | Hydraulic supporting device for temporarily supporting and detaching steel structure and use method of hydraulic supporting device |
| CN104878951A (en) * | 2015-06-10 | 2015-09-02 | 浙江核力建筑特种技术有限公司 | Embedded type controllable unloader |
| CN106181206A (en) * | 2016-08-26 | 2016-12-07 | 厦门鑫创好钢结构有限公司 | The auxiliary equipment that steel structure bridge manufactures can be used in |
| CN106760596A (en) * | 2016-12-07 | 2017-05-31 | 上海市机械施工集团有限公司 | The construction method of large-span steel is added a cover above bearing capacity restricted structure |
| CN107558738A (en) * | 2017-08-18 | 2018-01-09 | 武汉大学 | Build the vertical displacement automatic balancing method of reverse dismounting |
| CN107558738B (en) * | 2017-08-18 | 2019-10-11 | 武汉大学 | Build the vertical displacement automatic balancing method of reverse dismounting |
| CN113404329A (en) * | 2021-06-15 | 2021-09-17 | 中建科工集团有限公司 | Unloading method of temporary support structure |
| CN114997030A (en) * | 2022-08-03 | 2022-09-02 | 上海建工集团股份有限公司 | Temporary support unloading sequence and unloading amount determining method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102644386A (en) | Unloading control method for steel structure temporary bracing | |
| CN104499714B (en) | Hydromechanical installer engineering construction method based on BIM platforms and robot measurement | |
| CN108106594B (en) | Real-time measuring method for deformation of building | |
| CN108180881B (en) | Real-time measuring system for deformation of building | |
| CN103954229A (en) | Underground chamber whole-section deformation automatic monitoring device and method involved in device | |
| CN106489068B (en) | Measured value analytical equipment and measured value analysis method | |
| CN107272821A (en) | Calibration method of real-time clock and device, storage medium, electronic equipment | |
| CN104297130B (en) | The intrinsic permeability means of interpretation of low-permeability reservoir and system | |
| CN103821128A (en) | Salinized soil field thaw collapsing index detection method | |
| CN105240666A (en) | Semiautomatic adjusting device of surveying and mapping instrument tripod and surveying and mapping instrument tripod | |
| CN105215395B (en) | Boring process | |
| CN108572387B (en) | Calibration method of body source measurement detector | |
| CN108931237A (en) | A kind of total station is accurately positioned the construction method of large-scale furnace body frame column verticality | |
| CN107478191B (en) | A kind of monitoring method of bridge Wavelike steel webplate bending deformation | |
| CN105526976B (en) | Flow measurement device and method | |
| CN106969693A (en) | A kind of expansion filling body test block expansion rate determines device | |
| CN103398704B (en) | Method for measuring foundation frame at continuous-casting sector-shaped section | |
| CN206638236U (en) | It is a kind of can school zero tilt angle sensor system and vehicle | |
| CN115577597A (en) | Simulation method, device, medium and equipment for solute hyperdiffusion in fracture channel | |
| CN116067398A (en) | Asymmetry compensation method and system based on fiber-optic gyroscope scale factors | |
| CN108532984A (en) | A kind of support jig high accuracy install method | |
| CN108195402B (en) | Total station large-inclination angle measurement error analysis and correction method | |
| CN109740200B (en) | Method for calculating collapse diameter of reinforced concrete slab under action of explosive load | |
| CN114776045B (en) | Method, device and equipment for installing precast beam and readable storage medium | |
| CN108241049B (en) | Simulation monitoring system for multi-cause ground collapse condition and using method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 200120 Shanghai city Pudong New Area Fushan Road No. 33 Applicant after: Shanghai Construction Group Co., Ltd. Applicant after: Shanghai Mechanized Construction Group Co., Ltd. Address before: 200120 Shanghai city Pudong New Area Fushan Road No. 33 Applicant before: Shanghai Construction Group Co., Ltd. Applicant before: Shanghai Mechanized Construction Co., Ltd. |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120822 |