CN105046001B - The construction overall process analogue simulation analysis method of prestressing force string guy film dome structure - Google Patents

The construction overall process analogue simulation analysis method of prestressing force string guy film dome structure Download PDF

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CN105046001B
CN105046001B CN201510430743.7A CN201510430743A CN105046001B CN 105046001 B CN105046001 B CN 105046001B CN 201510430743 A CN201510430743 A CN 201510430743A CN 105046001 B CN105046001 B CN 105046001B
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rope
prestressing force
floor
strata
layer film
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CN105046001A (en
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任思杰
刘峰
沈珏茹
张伟
刘玉
肖之跃
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Shanghai Highbird Fabric Structure Of Ltd By Share Ltd
Shanghai Greenland Construction Group Co Ltd
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Shanghai Highbird Fabric Structure Of Ltd By Share Ltd
Shanghai Greenland Construction Group Co Ltd
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Abstract

The invention provides a kind of construction overall process analogue simulation analysis method of prestressing force string guy film dome structure, looks for shape process, prestressing force nought state against analysis process from initial configuration that includes prestressed cable film dome structure, simulates the whole process simulation sunykatuib analysis of installation process.It is an advantage of the invention that:The making of product is processed according to design drawing more accurate according to being the making model that is generated by inverse analysis process than tradition;The analogue simulation of installation process considers production error and actual installation error, adjusts mounting technique scheme in time according to analysis result;The analogue simulation of installation process so that the feasibility that mount scheme is evaluated before product implements installation finds out disadvantage point, avoids occurring surprisingly in installation process;By the analogue simulation of installation process, product quality is more secure, and installation period significantly reduces.

Description

The construction overall process analogue simulation analysis method of prestressing force string guy film dome structure
Technical field
The present invention relates to a kind of construction overall process analogue simulation analysis method of prestressing force string guy film dome structure, is applicable In the fabrication and installation of prestressing force string guy net dome and prestressing force string guy film dome structure.
Background technology
With the popularization of steel construction and prestressed structure, large-span space structure is used widely.As space structure A kind of special structure form, large-span prestressed suspended-dome structure by its new in structure, be applicable that span is big, structure The excellent characteristics such as materials are few, short construction period, are quite favored in fields such as stadiums, commercial buildings by architect.
The new hybridization that traditional suspended-dome structure is made up of top single layer rigid reticulated shell and lower flexible cable-strut system Space structure form.It is proposed that so far, string branch structure dome needs in gymnasium, commercial building etc. from professor Kawaguchi in 1994 The architectural of large span space is asked to be widely applied.Prestressing force string guy film dome structure described in the present invention be The prestressing force flexible architecture developed on the basis of traditional suspended-dome structure, by top flexible prestressing rope net or film knot The space structure form that structure system and lower flexible prestressing force cable-strut system collectively constitute, it is in applicability, economy and technology Property etc. is more excellent than traditional strings branch structure.Through retrieval, the document related to suspended-dome structure is mainly as follows at home:
Brief talk suspended-dome structure construction technology and analogy method, author's wealth mountain;Jinan Olympic Sports Center Gymnasium greatly across Spend the construction of suspen-shell structure prestressed cable, author Guo Zhengxing, Luo Bin etc.;Chongqing north gymnasium suspended-dome structure prestressing force Construction technology research, author Wang Zeqiang, Zhang Yingkai etc.;Prestressing force suspended-dome structure construction;Chinese 14, Hua Ye groups Engineering method is evaluated by ministerial level engineering method, large span suspen-shell structure Steel Structure Installation construction;On issuing 2011 annual enterprise-levels The large span suspen-shell structure Steel Structure Installation construction that Handan Ji Zhuan branch companies reported in the notice of engineering method complete;Large span Suspended-dome structure key construction technology research, author's unit Zhejiang Province Southeast grid Co., Ltd;Suspen-shell structure is repeatedly pre- Stress construction method, notification number CN101158195;Individual layer suspen-shell structure ground monomer tensioning lifting construction method, notification number CN103938875A。
The traditional strings that suspended-dome structure involved by document above is all made up of rigid reticulated shell and flexible cable-strut system Dome structure, it uses simulative calculation of construction mainly in the stretching construction process simulation of cable wire.
The content of the invention
It is an object of the invention to provide a kind of whole process simulation analog analysing method of prestressed cable film dome structure, reach Emulation data-guiding processing and fabricating, by the preferred construction procedure of analogue simulation, utilize the purpose for emulating data evaluation product quality.
In order to achieve the above object, the technical scheme is that providing a kind of prestressing force string guy film dome structure Construction overall process analogue simulation analysis method, the prestressing force string guy film dome structure include the winged bar positioned at middle part, pass through tune The length that section flies bar makes it to apply Prestressing positioned at the upper strata rope or upper layer film of its both sides and lower floor's rope, it is characterised in that bag Include following steps:
The first step, according to product design drawing and technical requirements, build the 3D geometry of prestressing force string guy film dome structure Model, using with the software for looking for shape function, form finding analysis is carried out to 3D geometrical models, in the hope of space mechanics poised state, Obtain:The simulation of the simulation prestressing force of upper strata rope or upper layer film and lower floor's rope, winged bar is compressed axially internal force and for fixing dome The end reaction of the supporting structure of structural system;
Second step, space mechanics poised state and prestressing force string guy by the prestressing force string guy film dome structure tried to achieve The design requirement of film dome structure is contrasted, if not reaching design requirement, returns to the first step, if reaching design requirement, Into the 3rd step;
3rd step, to reach the 3D geometrical models of mechanical balance state as original state, progressively shortened using software simulation The length for flying bar carries out inverse analysis so that the prestressing force on upper strata rope or upper layer film and lower floor's rope gradually discharges, until upper strata rope Or the prestressing force on upper layer film and lower floor's rope no longer changes, it follows that:The processing length of upper strata rope or upper layer film and lower floor's rope, Fly the regulated quantity of bar;
The regulated quantity of the processing length and winged bar of 4th step, the upper strata rope obtained according to the 3rd step or upper layer film and lower floor's rope Actual processing goes out upper strata rope or upper layer film, lower floor's rope and winged bar, actual using apparatus measures upper strata rope or upper layer film and lower floor's rope The actual initial length and practical adjustments amount of length and winged bar, prestressing force string guy film dome structure is built according to above-mentioned data Actual installation model, the original state of actual installation model are upper strata rope or the prestressing force of upper layer film and lower floor's rope close to zero;
5th step, simulated using software, gradually increase and fly bar so that the prestressing force of upper strata rope or upper layer film and lower floor's rope by It is cumulative big, until reaching simulation prestressing force, judge the physical length of upper strata rope or upper layer film and lower floor's rope, fly the actual axial direction of bar Compress internal force and bearing actual counter-force whether with the design length of upper strata rope or upper layer film and lower floor's rope, fly the simulation axle of bar It is consistent to the simulation counter-force of compression internal force and bearing, if so, then by the processing length of upper strata rope or upper layer film and lower floor's rope, winged bar Regulated quantity, the actual counter-force for being actually the compressed axially internal force and bearing output that flies bar instruct actual installation exercise, if it is not, then Return to the 4th step.
Because the prestressing force string guy film dome structure being related in the present invention and traditional suspended-dome structure are in structural system On be essentially different, the Construction Simulation mentioned in all documents of background technology can not be in prestressing force string guy film dome The upper of structure is directly applied.
Prestressing force string branch structure dome in the present invention is a kind of structural system of Nonlinear Large Deformation, between its component units Interaction it is extremely complex.Through analysis, the installation mesh of this nonlinear organization of prestressing force suspended-dome structure mainly solve with Lower problem:
1st, the structural initial pre stress state of mechanical balance is met according to design drawing information, structure;
2nd, state (nought state) is made by design point (pre-stressed state) try to achieve against analysis, and according to making State completes the processing of parts, can ensure that the processing dimension of parts meets the precision of design requirement;
3rd, because the complexity that nono-linear structure influences, prestress application can not be as traditional structures by root regulation cable wire length Spend to apply stress.All cable wires design to be designed using scale fixed length, can not be adjusted in installation process by adjusting rope length Save cable wire stress.
4th, sequence of construction is had a great influence to prestressing force transmission and installation results, and analysis must be carried out before construction and chooses conjunction Suitable installation steps.
In view of the fine application prospect of large-span prestressed suspended-dome structure, by being ground to technical solution of the present invention Study carefully, it is intended to ensure installation quality, reduce construction cost, from construction technology, valuable advices are provided for product specificationization design.Cause This, the construction overall process analogue simulation analysis method of invention prestressing force string guy film dome structure is extremely important.
It is an advantage of the invention that:The making of product is pressed according to being by the making model of inverse analysis process generation than tradition It is processed according to design drawing more accurate;The analogue simulation of installation process considers production error and actual installation error, Adjust mounting technique scheme in time according to analysis result;The analogue simulation of installation process so that commented before product implements installation The feasibility of valency mount scheme finds out disadvantage point, avoids occurring surprisingly in installation process;Pass through the analogue simulation of installation process, product Quality is more secure, and installation period significantly reduces.
Brief description of the drawings
Fig. 1 is the schematic diagram of the prestressing force string guy film dome structure in the present invention;
Fig. 2 is that the construction overall process analogue simulation of prestressing force string guy film dome structure analyzes general principle figure;
Fig. 3 is the construction overall process analogue simulation analysis process figure of prestressing force string guy film dome structure.
Embodiment
To become apparent the present invention, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
The invention provides a kind of construction overall process analogue simulation analysis method of prestressing force string guy film dome structure, knot Fig. 1 is closed, the prestressing force string guy film dome structure includes the winged bar 1 positioned at middle part, flies the length of bar 1 by adjusting and makes it by position Upper strata rope or upper layer film 2 and lower floor's rope 3 in its both sides apply prestressing force.With reference to Fig. 2 and Fig. 3, the present invention comprises the following steps:
The first step, according to product design drawing and technical requirements, build the 3D geometry of prestressing force string guy film dome structure Model, the software that shape, FInite Element look for shape or dynamic relaxation method$$$$ looks for shape function is looked for using with force density, 3D geometrical models are entered Row form finding analysis, in the hope of space mechanics poised state, obtain:The simulation prestressing force of upper strata rope or upper layer film 2 and lower floor's rope 3, The simulation for flying bar 1 is compressed axially the end reaction of internal force and the supporting structure for fixing DOME STRUCTURE SYSTEM;
Second step, space mechanics poised state and prestressing force string guy by the prestressing force string guy film dome structure tried to achieve The design requirement of film dome structure is contrasted, if not reaching design requirement, returns to the first step, if reaching design requirement, Into the 3rd step;
3rd step, to reach the 3D geometrical models of mechanical balance state as original state, progressively shortened using software simulation The length for flying bar 1 carries out inverse analysis so that the prestressing force on upper strata rope or upper layer film 2 and lower floor's rope 3 gradually discharges, until upper strata Prestressing force on rope or upper layer film 2 and lower floor's rope 3 no longer changes, it follows that:Upper strata rope or upper layer film 2 and lower floor's rope 3 plus Section chief's degree;Fly the regulated quantity of bar 1;
The tune of the processing length and winged bar 1 of 4th step, the upper strata rope obtained according to the 3rd step or upper layer film 2 and lower floor's rope 3 Section amount actual processing goes out upper strata rope or upper layer film 2, lower floor's rope 3 and winged bar 1, using apparatus measures upper strata rope or upper layer film 2 and under The actual initial length and practical adjustments amount of the layer physical length of rope 3 and winged bar 1, prestressing force string guy film is built according to above-mentioned data The actual installation model of dome structure, the original state of actual installation model should for upper strata rope or the pre- of upper layer film 2 and lower floor's rope 3 Power is close to zero;
5th step, simulated using software, gradually increase and fly bar 1 so that upper strata rope or the pre- of upper layer film 2 and lower floor's rope 3 should Power gradually increases, until reaching simulation prestressing force, judges upper strata rope or the physical length of upper layer film 2 and lower floor's rope 3, flies bar 1 Actually be compressed axially internal force and bearing 4 actual counter-force whether with upper strata rope or the design length of upper layer film 2 and lower floor's rope 3, The simulation of winged bar 1 is compressed axially internal force and the simulation counter-force of bearing 4 is consistent, if so, then by upper strata rope or upper layer film 2 and lower floor's rope 3 processing length, the regulated quantity for flying bar 1, fly bar 1 the actual counter-force for being actually compressed axially internal force and bearing 4 output instruct it is real The installation exercise on border, if it is not, then returning to the 4th step.

Claims (1)

1. a kind of construction overall process analogue simulation analysis method of prestressing force string guy film dome structure, the prestressing force string guy film Dome structure includes the winged bar positioned at middle part(1), fly bar by adjusting(1)Length make it by positioned at the upper strata Suo Huo of its both sides Upper layer film(2)And lower floor's rope(3)Apply prestressing force, it is characterised in that comprise the following steps:
The first step, according to product design drawing and technical requirements, build the 3D geometrical models of prestressing force string guy film dome structure, The software that shape, FInite Element look for shape or Dynamic Relaxation looks for shape function is looked for using with force density, 3D geometrical models are looked for Conformal analysis, in the hope of space mechanics poised state, obtain:Upper strata rope or upper layer film(2)And lower floor's rope(3)Simulation prestressing force, Fly bar(1)Simulation be compressed axially the end reaction of internal force and the supporting structure for fixing DOME STRUCTURE SYSTEM;
Second step, space mechanics poised state and prestressing force string guy film vault by the prestressing force string guy film dome structure tried to achieve The design requirement of roof construction is contrasted, if not reaching design requirement, returns to the first step, if reaching design requirement, is entered 3rd step;
3rd step, to reach the 3D geometrical models of space mechanics poised state as original state, progressively shortened using software simulation Fly bar(1)Length carry out inverse analysis so that upper strata rope or upper layer film(2)And lower floor's rope(3)On prestressing force gradually discharge, directly To upper strata rope or upper layer film(2)And lower floor's rope(3)On prestressing force no longer change, it follows that:Upper strata rope or upper layer film(2)And Lower floor's rope(3)Processing length;Fly bar(1)Regulated quantity;
4th step, the upper strata rope or upper layer film obtained according to the 3rd step(2)And lower floor's rope(3)Processing length and winged bar(1)'s Regulated quantity actual processing goes out upper strata rope or upper layer film(2), lower floor's rope(3)And winged bar(1), using apparatus measures upper strata rope or upper strata Film(2)And lower floor's rope(3)Physical length and winged bar(1)Actual initial length and practical adjustments amount, according to above-mentioned data build The actual installation model of prestressing force string guy film dome structure, the original state of actual installation model is upper strata rope or upper layer film (2)And lower floor's rope(3)Prestressing force close to zero;
5th step, simulated using software, gradually increase and fly bar(1)So that upper strata rope or upper layer film(2)And lower floor's rope(3)It is pre- Stress gradually increases, until reaching simulation prestressing force, judges upper strata rope or upper layer film(2)And lower floor's rope(3)Physical length, fly Bar(1)Be actually compressed axially internal force and bearing(4)Actual counter-force whether with upper strata rope or upper layer film(2)And lower floor's rope (3)Design length, fly bar(1)Simulation be compressed axially internal force and bearing(4)Simulation counter-force be consistent, if so, then by upper strata Rope or upper layer film(2)And lower floor's rope(3)Processing length, fly bar(1)Regulated quantity, fly bar(1)Be actually compressed axially internal force And bearing(4)The output of actual counter-force instruct actual installation exercise, if it is not, then returning to the 4th step.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09310442A (en) * 1996-05-24 1997-12-02 Ohbayashi Corp Roof structure
JP3399873B2 (en) * 1999-04-15 2003-04-21 機動建設工業株式会社 How to build a dome structure
CN102720295A (en) * 2012-04-04 2012-10-10 中国航空规划建设发展有限公司 Prestress determination method based on tension and whole loading process simulation analysis of cable dome
CN103938875A (en) * 2013-01-18 2014-07-23 上海宝冶集团有限公司 Ground single body tensioning lifting construction method of single layer suspendome
CN104234200A (en) * 2014-09-24 2014-12-24 东南大学 Ring-by-ring lifting mounting method for suspendome cable-bar system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09310442A (en) * 1996-05-24 1997-12-02 Ohbayashi Corp Roof structure
JP3399873B2 (en) * 1999-04-15 2003-04-21 機動建設工業株式会社 How to build a dome structure
CN102720295A (en) * 2012-04-04 2012-10-10 中国航空规划建设发展有限公司 Prestress determination method based on tension and whole loading process simulation analysis of cable dome
CN103938875A (en) * 2013-01-18 2014-07-23 上海宝冶集团有限公司 Ground single body tensioning lifting construction method of single layer suspendome
CN104234200A (en) * 2014-09-24 2014-12-24 东南大学 Ring-by-ring lifting mounting method for suspendome cable-bar system

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
大跨度弦支穹顶结构施工关键技术与模型试验研究;叶垚;《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》;20120315;第1-78页 *
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考虑临时支撑的2008奥运会羽毛球馆新型弦支穹顶结构施工仿真分析;李鹏飞;《万方数据知识服务平台》;20090327;第1-87页 *

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