CN116220380A - Three-stage sliding construction method for ultra-large span pipe truss in limited space - Google Patents
Three-stage sliding construction method for ultra-large span pipe truss in limited space Download PDFInfo
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- CN116220380A CN116220380A CN202211347947.0A CN202211347947A CN116220380A CN 116220380 A CN116220380 A CN 116220380A CN 202211347947 A CN202211347947 A CN 202211347947A CN 116220380 A CN116220380 A CN 116220380A
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- 238000010276 construction Methods 0.000 title claims abstract description 49
- 238000009434 installation Methods 0.000 claims abstract description 20
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- 239000000463 material Substances 0.000 claims abstract description 8
- 238000009825 accumulation Methods 0.000 claims abstract description 3
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 3
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Abstract
A three-stage sliding construction method for a limited space ultra-large span pipe truss belongs to the technical field of construction of steel structures of building pipe trusses. The mathematical model is built by simulating complete and accurate truss bidirectional accumulation sliding construction processes on the information such as the length of an available construction site, the size of a main truss, the structure of a connecting truss, the size of a temporary fixing device, the optimal combination form and the like in a red line of a material yard closed building. The optimal combination mode of the three-stage sliding construction method of the truss in various limited spaces can be obtained through mathematical model calculation, and smooth construction is ensured. The method has the advantages that the problem of installation of the ultra-large span pipe truss in the limited space is effectively solved, and smooth closed reconstruction construction is ensured on the premise of not influencing normal production operation. The method is suitable for the installation construction of the ultra-large span pipe truss similar to the limited space without influencing the normal production condition.
Description
Technical Field
The invention belongs to the technical field of construction of steel structures of building pipe trusses, and particularly provides a three-stage sliding construction method of a limited space ultra-large span pipe truss, which is suitable for sliding installation construction of various limited space ultra-large span pipe trusses of industrial and civil buildings and the like.
Background
Along with the continuous soundness and perfection of the green environmental protection policy in China, the whole sealing transformation is required for a plurality of large-scale open-air material reserve sites in China, such as large-scale reserve sites in power plants, steel plants, wharfs and the like in China, for implementing the green sustainable development strategy. However, most open-air yards are normally produced and used, and the construction difficulty of closed transformation is high. In order to ensure normal production and operation without influencing the use and transportation of internal storage materials, a sliding construction method is adopted for construction. When the truss is assembled from one end to the other end by adopting the accumulated sliding construction method, the truss can be installed in a sliding way without occupying the space inside the structure in the whole construction process, and the normal production of materials in the space is ensured. However, when the end of the red line of the closed structure building is provided with buildings such as public houses, pipe galleries and the like, and the internal construction environment of the site is limited, the conventional sliding method cannot meet the truss construction requirement.
In order to solve the problem that the pipe truss cannot be installed according to the conventional sliding method when the construction site is limited, the mathematical model and the application method of the three-stage sliding construction method of the limited-space ultra-large-span pipe truss are developed by the company, and the problem of pipe truss installation under the adverse conditions that the space is limited and normal production is not influenced is effectively solved.
Disclosure of Invention
The invention aims to provide a three-stage sliding construction method of a limited space ultra-large span pipe truss, which effectively solves the problem of pipe truss installation under the adverse conditions that the construction space is limited and normal production is not affected. The sliding installation construction method is suitable for the sliding installation construction of the ultra-large span pipe truss in various limited spaces such as industrial and civil buildings.
The invention establishes a mathematical model by simulating complete and accurate truss bidirectional accumulation sliding construction processes on the information such as the available construction site length, the main truss 2, the structure size of the connecting truss 3, the temporary fixing device size, the optimal combination form and the like in the material yard closed building red line. The optimal combination mode of the three-stage sliding construction method of the truss in various limited spaces can be obtained through mathematical model calculation, and smooth construction is ensured. The mathematical model formula is as follows:
(n 1 +5)·P+n 2 ·(W 1 +W 2 )+L 1 ＝L
n 1 +n 2 +4＝n
wherein:
l is the total length of a material yard closed field, m;
L 1 -the length of the available construction site in the yard closed building red line, m;
p-truss axis distance, m;
W 1 -main truss width, m;
W 2 -temporary fixation of the device length, m;
n-the number of triangular main trusses (truss);
n 1 -first stage installation of the number of tie trusses, (group);
n 2 the second stage installs the temporary fixture number (group).
Note that: the results obtained by the formulas are all integers.
During construction, the actual situation of the site is calculated according to the mathematical model formula:
first stage installation tie truss number n 1 And the number n of temporary fixing devices installed in the second stage 2 . The first stage: the main truss 2 and the connecting truss 3 are assembled on the temporary assembling jig frame 5, and then sliding is carried out until n is reached 1 And the installation of the group connection truss connection main truss is completed, and the sliding of the pipe truss in place in the first stage is completed.
And a second stage: first, temporarily assembleAssembling two main trusses 2 and a connecting truss 3 on the jig frame 5 to form a stable unit, and then sliding; the main truss 2 and the temporary fixing device 4 are assembled and connected, and then slide until n 2 The temporary fixing device is connected with the main truss, assembled and then slipped; and then assembling the connecting truss 3 and the main truss 2 to form an end stabilizing unit, and finally sliding the first truss main truss 2 in the second stage to be in position.
And a third stage: the temporary assembly jig frame 5 is removed firstly, then the reverse sliding construction of the third stage is completed according to the principle of the first installation and the first removal and the reverse sliding of the following pipe trusses, the temporary fixing device 4 between the pipe trusses is gradually removed and replaced by the connecting truss 3, and the like. So far, the limited space ultra-large span pipe truss sliding installation construction is completed by the three-stage sliding construction method.
Drawings
Fig. 1 is a mathematical model calculation diagram.
Fig. 2 is a first stage truss slip installation view.
Fig. 3 is a second stage truss slip installation view.
Fig. 4 is a third stage truss slip installation completion view.
The temporary fixing device comprises a gable truss 1, a main truss 2, a connecting truss 3, a temporary fixing device 4, a temporary assembly jig frame 5 and a material pile 6.
Detailed Description
Taking the reconstruction sealing project of the first steel Beijing Tang Qiutuan stock yard of the unit construction of the unit as an example, the whole span of the main truss reaches 245m, the height of the main truss is 63.7m, the total length of the sealing yard is 320m, the length of the available construction yard is 80m, the width of the main truss is 5m, the length of the connecting truss is 11m, the axial distance is 16m, the total truss is 21 truss (including two-end 2 truss gable truss), and 19 truss is required to slide. The temporary fixation device is 1m long.
According to the engineering information conditions, the mathematical model is applied to analysis, and the known conditions are as follows: l=320 m; l (L) 1 =80m; p=16m; n=19 pin; w (W) 1 ＝5m；W 2 ＝1m。
1. According to the mathematical model formula:
(n 1 +5)·P+n 2 ·(W 1 +W 2 )+L 1 ＝L
n 1 +n 2 +4＝n
substituting the known conditions into a mathematical model formula:
(n 1 +5)×16+n 2 ×(5+1)+80＝320
n 1 +n 2 +4＝19
the method comprises the following steps of: n is n 1 ＝6，n 2 =9. The number of the connecting trusses installed in the first stage is 6 groups, and the number of the temporary fixing devices installed in the second stage is 9 groups.
2. The number of the spliced connecting trusses in the first stage is n 1 =6, i.e. seven truss main girders 2 are installed and slid into place.
3. The number of temporary fixing devices 4 adopted in the second stage is n 2 =9, i.e. twelve main trusses 2 complete installation and first forward slip, the first truss in place.
4. And in the third stage, the temporary assembly jig frame 5 is removed firstly, then the back pipe trusses are matched to reversely slide according to the principle of firstly installing and firstly removing, the temporary fixing devices 4 among 9 groups of main trusses are gradually removed and replaced by the connecting trusses 3, and the like, so that reverse sliding construction of the trusses in the third stage is completed, and the sliding construction is completed.
Claims (1)
1. A three-stage sliding construction method of a limited space ultra-large span pipe truss is characterized in that,
first, a mathematical model is built
Establishing a mathematical model by simulating complete and accurate truss bidirectional accumulation sliding construction process on the information of available construction site length, main truss, connecting truss structure size, temporary fixing device size and optimal combination form in a red line of a material yard closed building; calculating through a mathematical model to obtain an optimal combination mode of three-stage sliding construction methods of trusses in various limited spaces, and ensuring that the construction is carried out smoothly; the mathematical model formula is as follows:
(n 1 +5)·P+n 2 ·(W 1 +W 2 )+L 1 ＝L
n 1 +n 2 +4＝n
wherein:
l is the total length of a material yard closed field, m;
L 1 -the length of the available construction site in the yard closed building red line, m;
p-truss axis distance, m;
W 1 -main truss width, m;
W 2 -temporary fixation of the device length, m;
n is the number of triangular main trusses, truss;
n 1 -first stage installation of the number of tie trusses, group;
n 2 -the second stage of installing the number of temporary fixing means, group;
during construction, the actual situation of the site is calculated according to the mathematical model formula: first stage installation tie truss number n 1 And the number n of temporary fixing devices installed in the second stage 2 ；
The first stage: assembling the pipe truss (2) and the connecting truss (3) on the temporary assembling jig frame (5), and then sliding until n is reached 1 The group connecting trusses are connected with the main trusses to complete the installation, and the first-stage pipe trusses are slipped and positioned;
and a second stage: firstly, splicing two main trusses (2) and a connecting truss (3) on a temporary splicing jig frame (5) to form a stable unit, and then sliding; then the main truss (2) and the temporary fixing device (4) are assembled and connected, and then sliding is carried out until n 2 The temporary fixing device is connected with the main truss, assembled and then slipped; then assembling the connecting truss (3) and the main truss (2) to form an end stabilizing unit, and finally sliding the first truss pipe truss (2) in the second stage to be in place;
and a third stage: firstly removing the temporary assembly jig frame (5), then according to the principle of firstly installing and firstly removing, matching with the backward reverse sliding of the pipe trusses, gradually removing the temporary fixing device (4) between the pipe trusses and replacing the temporary fixing device by the connecting truss (3), and the like, so as to finish the reverse sliding construction in the third stage;
and the sliding installation construction of the limited space ultra-large span pipe truss is completed by a three-stage sliding construction method.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211347947.0A CN116220380A (en) | 2022-10-31 | 2022-10-31 | Three-stage sliding construction method for ultra-large span pipe truss in limited space |
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| CN202211347947.0A CN116220380A (en) | 2022-10-31 | 2022-10-31 | Three-stage sliding construction method for ultra-large span pipe truss in limited space |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379425A (en) * | 2020-03-26 | 2020-07-07 | 山西四建集团有限公司 | Installation and construction method for large-span multi-curved-surface special-shaped combined steel truss in narrow space |
| CN111997382A (en) * | 2020-08-18 | 2020-11-27 | 陕西建工机械施工集团有限公司 | Telescopic steel structure sliding mechanism and sliding method |
| CN112709448A (en) * | 2020-12-22 | 2021-04-27 | 北京首钢建设集团有限公司 | Construction method for accumulated slippage of inner pipe truss in limited space |
| WO2021174481A1 (en) * | 2020-03-05 | 2021-09-10 | 广州建筑股份有限公司 | Construction method for accumulative sliding of single-side subsection orbital transfer of unequal-span structure |
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2022
- 2022-10-31 CN CN202211347947.0A patent/CN116220380A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021174481A1 (en) * | 2020-03-05 | 2021-09-10 | 广州建筑股份有限公司 | Construction method for accumulative sliding of single-side subsection orbital transfer of unequal-span structure |
| CN111379425A (en) * | 2020-03-26 | 2020-07-07 | 山西四建集团有限公司 | Installation and construction method for large-span multi-curved-surface special-shaped combined steel truss in narrow space |
| CN111997382A (en) * | 2020-08-18 | 2020-11-27 | 陕西建工机械施工集团有限公司 | Telescopic steel structure sliding mechanism and sliding method |
| CN112709448A (en) * | 2020-12-22 | 2021-04-27 | 北京首钢建设集团有限公司 | Construction method for accumulated slippage of inner pipe truss in limited space |
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