CN114033179A - Self-balancing inclined plane sliding method for long-span pipe truss - Google Patents
Self-balancing inclined plane sliding method for long-span pipe truss Download PDFInfo
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- CN114033179A CN114033179A CN202111514844.4A CN202111514844A CN114033179A CN 114033179 A CN114033179 A CN 114033179A CN 202111514844 A CN202111514844 A CN 202111514844A CN 114033179 A CN114033179 A CN 114033179A
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- support
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- pipe truss
- span pipe
- sliding
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000005452 bending Methods 0.000 claims description 13
- 238000010008 shearing Methods 0.000 claims description 12
- 238000010276 construction Methods 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/342—Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/36—Bearings or like supports allowing movement
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- Structural Engineering (AREA)
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Abstract
The invention provides a self-balancing inclined plane sliding method for a large-span pipe truss, which comprises the following steps: s1: arranging a large-span pipe truss on a plurality of inclined supports, wherein the inclined planes of the inclined supports are attached to the bottom surfaces of arch springing of the large-span pipe truss, and the inclined planes of the inclined supports form a support inclination angle with the horizontal plane; s2: determining and adjusting the support inclination angle of the inclined support to an optimal sliding inclination angle to offset and reduce the lateral horizontal thrust of the arch springing; s3: translating the long-span pipe truss. The invention discloses a self-balancing inclined plane sliding method for a large-span pipe truss, which solves the problems of large lateral horizontal force of horizontal sliding of an ultra-large span arch stock yard, unsafe sliding of a clamping rail at the inner side of a sliding shoe plate and the like.
Description
Technical Field
The invention relates to the field of steel structure sliding construction, in particular to a self-balancing inclined plane sliding method for a long-span pipe truss.
Background
The traditional oversized arch-spanning stock ground generally adopts a horizontal sliding process, a large number of temporary rigid supporting measures are added on two sides of the horizontal sliding process to offset the horizontal thrust of an arch-shaped structure column base, the construction organization is difficult, the working benefit is reduced, the labor consumption is high, the measure steel consumption is large, the construction period is long, the efficiency is low, the cost is high, and the safety factor is low.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a self-balancing inclined plane sliding method for a large-span pipe truss, which solves the problems of large lateral horizontal force of horizontal sliding of an ultra-large span arch stock ground, unsafe sliding of a clamping rail on the inner side of a sliding shoe plate and the like.
In order to achieve the purpose, the invention provides a self-balancing inclined plane sliding method for a long-span pipe truss, which comprises the following steps:
s1: arranging a large-span pipe truss on a plurality of inclined supports, wherein the inclined planes of the inclined supports are attached to the bottom surfaces of arch springing of the large-span pipe truss, and the inclined planes of the inclined supports form a support inclination angle with the horizontal plane;
s2: determining and adjusting the support inclination angle of the inclined support to an optimal sliding inclination angle to offset and reduce the lateral horizontal thrust of the arch springing;
s3: translating the long-span pipe truss.
Preferably, the step of S2 further comprises the steps of:
s21: calculating the vertical support counter force and the lateral horizontal thrust of the inclined support according to the dead weight working condition of the slippage state of the large-span pipe truss;
s22: determining the size of the current support inclination angle according to the resultant force direction of the vertical support counterforce and the lateral horizontal thrust, and taking the current support inclination angle as an initial support inclination angle;
s23: adjusting a calculation model of the large-span pipe truss according to the initial support inclination angle, wherein the calculation model simultaneously considers additional factors of the slippage state of the large-span pipe truss, and the additional factors comprise: whether additional dead weight exists or not, whether the sliding working condition exists or not and whether the temperature difference exists or not when the truss is folded;
s24: calculating the additional bending moment of the inclined support and the shearing force of the inclined support in the inclined plane direction through the calculation model;
s25: and finely adjusting the inclination angle of the support along the positive direction and the negative direction, calculating and checking the variation trend of the additional bending moment of the inclined support and the shearing force in the direction of the inclined plane through the calculation model, adjusting the inclination angle of the support according to the trend until the additional bending moment and the shearing force in the direction of the inclined plane are minimum, and taking the inclination angle of the support when the additional bending moment and the shearing force in the direction of the inclined plane are minimum as the optimal sliding inclination angle.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
the invention can automatically offset and reduce the lateral horizontal thrust of the arch springing by mainly adjusting the inclination angle of the inclined support. The inclination angle of the inclined support is mainly determined according to the proportional relation of the vertical support counter force and the lateral horizontal thrust of the support node, and the process effect of self-balancing sliding is achieved by selecting the proper inclination angle of the support foundation to reduce the small stress of the support and the bending moment of the support node. Therefore, the safety of the whole long-distance sliding of the steel truss can be greatly improved under the condition that the sliding beam is not additionally provided with a lateral rigid support, the construction period is saved, and the cost is reduced. The method is mainly used in the field of steel structure sliding construction, the traditional horizontal sliding process can be changed, the inclined plane sliding process is adopted, the lateral horizontal thrust of the column base of the arch structure is offset, the steel structure support manufacturing and mounting construction procedures on two sides are reduced, the construction benefit is improved, the method is safe and reliable, the construction period is shortened, and the materials and the cost are saved.
Drawings
Fig. 1 is a stress structure diagram of a diagonal support of a self-balancing inclined plane slipping method for a long-span pipe truss according to an embodiment of the invention.
Detailed Description
The following description of the preferred embodiment of the present invention, with reference to the accompanying drawings and fig. 1, will provide a better understanding of the function and features of the invention.
Referring to fig. 1, a self-balancing inclined plane slipping method for a long-span pipe truss according to an embodiment of the present invention includes:
s1: arranging a large-span pipe truss 1 on a plurality of inclined supports 2, wherein the inclined surfaces of the inclined supports 2 are attached to the bottom surfaces of arch springing of the large-span pipe truss 1, and the inclined surfaces of the inclined supports 2 form a support inclination angle a with the horizontal plane;
s2: determining and adjusting the support inclination angle a of the inclined support 2 to the optimal sliding inclination angle to offset and reduce the lateral horizontal thrust F2 of the arch springing;
the step of S2 further includes the steps of:
s21: calculating a vertical support reaction force F1 and a lateral horizontal thrust force F2 of the inclined support 2 according to the self-weight working condition of the slippage state of the large-span pipe truss 1;
s22: determining the size of a current support inclination angle a according to the resultant force direction of the vertical support reaction force F1 and the lateral horizontal thrust force F2, and taking the current support inclination angle a as an initial support inclination angle;
s23: adjusting a calculation model of the large-span pipe truss 1 according to the initial support inclination angle, wherein the calculation model simultaneously considers additional factors of the slippage state of the large-span pipe truss 1, and the additional factors comprise: whether additional dead weight exists or not, whether the sliding working condition exists or not and whether the temperature difference exists or not when the truss is folded;
s24: calculating the additional bending moment of the inclined support 2 and the shearing force of the inclined surface of the inclined support 2 through a calculation model;
s25: and finely adjusting the inclination angle a of the support along the positive direction and the negative direction, calculating and checking the variation trend of the additional bending moment of the inclined support 2 and the shearing force in the inclined plane direction through a calculation model, adjusting the inclination angle a of the support according to the trend until the additional bending moment and the shearing force in the inclined plane direction are minimum, and taking the inclination angle a of the support when the additional bending moment and the shearing force in the inclined plane direction are minimum as the optimal sliding inclination angle.
S3: the long-span pipe truss 1 is translated.
By adopting the self-balancing inclined plane sliding process of the embodiment, the problems that the horizontal sliding lateral horizontal force of the oversized arch-spanning stock ground is large, the sliding of the clamping rail on the inner side of the sliding shoe plate is unsafe and the like can be solved. The convenience is brought to the sliding construction, the construction period is saved, and the cost is reduced.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (2)
1. A self-balancing inclined plane sliding method for a long-span pipe truss comprises the following steps:
s1: arranging a large-span pipe truss on a plurality of inclined supports, wherein the inclined planes of the inclined supports are attached to the bottom surfaces of arch springing of the large-span pipe truss, and the inclined planes of the inclined supports form a support inclination angle with the horizontal plane;
s2: determining and adjusting the support inclination angle of the inclined support to an optimal sliding inclination angle to offset and reduce the lateral horizontal thrust of the arch springing;
s3: translating the long-span pipe truss.
2. The self-balancing bevel skidding method for the large-span pipe truss according to claim 1, wherein the step of S2 further comprises the steps of:
s21: calculating the vertical support counter force and the lateral horizontal thrust of the inclined support according to the dead weight working condition of the slippage state of the large-span pipe truss;
s22: determining the size of the current support inclination angle according to the resultant force direction of the vertical support counterforce and the lateral horizontal thrust, and taking the current support inclination angle as an initial support inclination angle;
s23: adjusting a calculation model of the large-span pipe truss according to the initial support inclination angle, wherein the calculation model simultaneously considers additional factors of the slippage state of the large-span pipe truss, and the additional factors comprise: whether additional dead weight exists or not, whether the sliding working condition exists or not and whether the temperature difference exists or not when the truss is folded;
s24: calculating the additional bending moment of the inclined support and the shearing force of the inclined support in the inclined plane direction through the calculation model;
s25: and finely adjusting the inclination angle of the support along the positive direction and the negative direction, calculating and checking the variation trend of the additional bending moment of the inclined support and the shearing force in the direction of the inclined plane through the calculation model, adjusting the inclination angle of the support according to the trend until the additional bending moment and the shearing force in the direction of the inclined plane are minimum, and taking the inclination angle of the support when the additional bending moment and the shearing force in the direction of the inclined plane are minimum as the optimal sliding inclination angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111514844.4A CN114033179A (en) | 2021-12-13 | 2021-12-13 | Self-balancing inclined plane sliding method for long-span pipe truss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111514844.4A CN114033179A (en) | 2021-12-13 | 2021-12-13 | Self-balancing inclined plane sliding method for long-span pipe truss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114033179A true CN114033179A (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111514844.4A Pending CN114033179A (en) | 2021-12-13 | 2021-12-13 | Self-balancing inclined plane sliding method for long-span pipe truss |
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Citations (11)
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|---|---|---|---|---|
| JP2000045526A (en) * | 1998-07-27 | 2000-02-15 | Tomoe Corp | Construction of roof frame |
| CN101191333A (en) * | 2006-11-28 | 2008-06-04 | 贵阳铝镁设计研究院 | Overturn-resisting slipping-proof foundation |
| CN101387132A (en) * | 2008-09-26 | 2009-03-18 | 中船第九设计研究院工程有限公司 | Wide span steel roof frame supporting construction |
| CN202755451U (en) * | 2012-09-05 | 2013-02-27 | 机械工业第三设计研究院 | Inclined steel structure support seat and inclined support column |
| CN207567961U (en) * | 2017-11-01 | 2018-07-03 | 中冶京诚工程技术有限公司 | Suitable for the steel structure support seat of sliding construction |
| CN109812024A (en) * | 2019-02-16 | 2019-05-28 | 中建一局集团第一建筑有限公司 | A kind of high-altitude inclination angle across truss greatly is from anchor accumulation slippage construction method |
| CN110344599A (en) * | 2019-07-09 | 2019-10-18 | 上海宝冶工程技术有限公司 | A kind of inclined-plane sliding supplementary structure of arch tube truss structure |
| CN110656723A (en) * | 2018-06-29 | 2020-01-07 | 上海宝冶集团有限公司 | Rail support for sliding construction of cylindrical arch shell roof |
| CN111424991A (en) * | 2020-04-30 | 2020-07-17 | 广州五羊建设机械有限公司 | Arch-structure slide rail lateral-oblique sliding construction method and device |
| CN111563341A (en) * | 2020-04-30 | 2020-08-21 | 中铁二院工程集团有限责任公司 | Evaluation method for anchorage depth of embedded foundation of arch abutment of deck arch bridge |
| CN112329094A (en) * | 2019-07-31 | 2021-02-05 | 深圳市建筑设计研究总院有限公司 | Method for loading secondary self-reaction structure and calculating support reaction |
-
2021
- 2021-12-13 CN CN202111514844.4A patent/CN114033179A/en active Pending
Patent Citations (11)
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| CN101387132A (en) * | 2008-09-26 | 2009-03-18 | 中船第九设计研究院工程有限公司 | Wide span steel roof frame supporting construction |
| CN202755451U (en) * | 2012-09-05 | 2013-02-27 | 机械工业第三设计研究院 | Inclined steel structure support seat and inclined support column |
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| CN110656723A (en) * | 2018-06-29 | 2020-01-07 | 上海宝冶集团有限公司 | Rail support for sliding construction of cylindrical arch shell roof |
| CN109812024A (en) * | 2019-02-16 | 2019-05-28 | 中建一局集团第一建筑有限公司 | A kind of high-altitude inclination angle across truss greatly is from anchor accumulation slippage construction method |
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| CN112329094A (en) * | 2019-07-31 | 2021-02-05 | 深圳市建筑设计研究总院有限公司 | Method for loading secondary self-reaction structure and calculating support reaction |
| CN111424991A (en) * | 2020-04-30 | 2020-07-17 | 广州五羊建设机械有限公司 | Arch-structure slide rail lateral-oblique sliding construction method and device |
| CN111563341A (en) * | 2020-04-30 | 2020-08-21 | 中铁二院工程集团有限责任公司 | Evaluation method for anchorage depth of embedded foundation of arch abutment of deck arch bridge |
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Application publication date: 20220211 |
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