CN110847385B - Anti-deformation method for integral jacking of grid structure - Google Patents
Anti-deformation method for integral jacking of grid structure Download PDFInfo
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- CN110847385B CN110847385B CN201911195621.9A CN201911195621A CN110847385B CN 110847385 B CN110847385 B CN 110847385B CN 201911195621 A CN201911195621 A CN 201911195621A CN 110847385 B CN110847385 B CN 110847385B
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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
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
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Abstract
The invention provides a method for preventing deformation of a net rack structure by integral jacking, which comprises the following steps: preliminarily building a net rack structure to be jacked on the ground corresponding to the space where the net rack structure is to be erected; b. building a space model of the grid structure to be jacked by using BIM software, and calculating and marking a positioning coordinate of each ball node of the grid structure in the jacking process; c. selecting a plurality of pairs of ball nodes on the grid structure; d. welding a steel stranded rope penetrating piece at the bottom of the selected ball joint; e. respectively penetrating two ends of a steel strand into holes of steel strand penetrating pieces at the bottoms of each pair of ball nodes corresponding to the steel strand; f. adjusting the locking piece to tighten the steel strand; g. jacking the grid structure in a stepping jacking mode and adjusting the tightness of the steel stranded rope; h. and g, repeating the step g until the grid structure is jacked to the designed height.
Description
Technical Field
The invention relates to the field of large-scale grid construction, in particular to a method for preventing deformation of a grid structure by integral jacking.
Background
In the building construction process, the general large-scale net rack is built on the ground corresponding to the space of the net rack to be built, and then the net rack is lifted to the designed position by adopting an integral jacking mode. In the jacking process of the large-scale net rack, the large-scale net rack can deform due to the problems of uneven stress and the like, so that the whole size is difficult to control. Therefore, the whole aesthetic property of the large net rack is influenced, and even the collapse of the large net rack can be caused.
Disclosure of Invention
The invention aims to provide a method for preventing the integral jacking of a grid structure from deforming so as to solve the problem that the integral size of a large-scale grid structure is difficult to control in the jacking process.
The invention is realized by the following steps: a method for preventing deformation of a net rack structure during integral jacking comprises the following steps:
a. preliminarily building a net rack structure to be jacked on the ground corresponding to the space where the net rack structure is to be erected, wherein the net rack structure is a ball joint net rack structure;
b. building a space model of the grid structure to be jacked by using BIM software, and calculating and marking a positioning coordinate of each ball node of the grid structure in the jacking process;
c. selecting a plurality of pairs of ball nodes on the grid structure, wherein the connecting line of each pair of ball nodes is a horizontal line;
d. welding a steel strand penetrating piece at the bottom of the selected ball joint, wherein the steel strand penetrating piece is provided with a hole for penetrating and connecting a steel strand;
e. a plurality of steel stranded ropes with corresponding lengths are prepared according to the distance between each pair of ball nodes, a plurality of steel stranded ropes are connected between the steel stranded rope penetrating pieces at the bottoms of each pair of ball nodes in a penetrating way, and the end parts of the steel stranded ropes penetrate through holes in the steel stranded rope penetrating pieces and are fixed through locking pieces arranged outside the steel stranded rope penetrating pieces;
f. adjusting the locking piece to tighten the steel strand;
g. jacking the grid structure in a stepping jacking mode, and measuring the coordinate position of each ball node on the grid structure by using a total station after each jacking step; when the coordinate deviation of some ball nodes is found out and the positioning coordinates are calculated through BIM software, the tightness of the steel stranded ropes near the ball nodes is adjusted through the locking pieces, so that the coordinates of the ball nodes are consistent with the calculated positioning coordinates, and then the next step of jacking of the grid structure is carried out;
h. and g, repeating the step g until the grid structure is jacked to the designed height.
The steel strand penetrating piece comprises a vertical plate fixedly connected to the bottom of the ball joint and reinforcing plates symmetrically arranged on two sides of the vertical plate, the reinforcing plates are fixed on the plate surface of the vertical plate, and the top ends of the reinforcing plates are fixedly connected with the bottom of the ball joint; three holes for connecting steel stranded ropes in a penetrating manner are formed in the surface of the vertical plate between the two reinforcing plates; the vertical plates of the positioning parts of the steel strand ropes on each pair of ball nodes are arranged in parallel, and the surface without the reinforcing plate faces outwards.
The locking part comprises a plurality of positioning discs used for abutting against the surface of the vertical plate and a plurality of conical rubber rings of which the outer side surfaces are of conical surface structures, and the side walls of the conical rubber rings are provided with openings arranged along the length direction of the conical rubber rings for adjusting the inner diameters of the conical rubber rings; the positioning disc is provided with a plurality of conical holes for penetrating and connecting the steel strand, the wall of each conical hole is of a conical surface structure matched with the outer side wall of the conical rubber ring, and the aperture of each conical hole is gradually increased from the abutting surface of the positioning disc and the vertical plate to the other surface; and the steel strand penetrating out of the hole of the steel strand penetrating piece penetrates through the conical hole on the positioning disc and then penetrates through the conical rubber ring, and finally the conical rubber ring is correspondingly embedded in the conical hole of the positioning disc.
The invention selects a plurality of pairs of ball nodes on a ball grid structure to be jacked, a steel strand penetrating piece is fixed at the bottom of each pair of ball nodes, a plurality of steel strands are penetrated between each pair of steel strand penetrating pieces, the end parts of the steel strands are fixed through locking pieces arranged outside the steel strand fixing pieces, and the steel strands between each pair of steel strand fixing pieces are tensioned. The method comprises the steps that positioning coordinates of ball nodes on a grid structure in the jacking process are calculated by BIM software before the grid structure is jacked, a total station is used for detecting the coordinates of the ball nodes on the grid structure at each jacking distance of the grid structure, and when the coordinates of some ball nodes deviate from the positioning coordinates calculated by the BIM software, the tightness of steel stranded ropes near some ball nodes is adjusted to prevent the grid structure from deforming. The method is simple to operate, can effectively solve the problem that the deformation of the grid structure is difficult to control in the jacking process, can also avoid safety accidents caused by the deformation of the grid structure, is safe and reliable, and is worthy of popularization and application.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural diagram of the positioning plate.
Fig. 3 is a schematic structural view of a conical rubber ring.
Fig. 4 is a schematic view of a connection structure of the steel strand positioning element and the ball joint.
In the figure: 1. a locking member; 2. a ball node; 3. a steel strand threading member; 4. a steel strand; 5. a conical surface hole; 6. a conical rubber ring; 7. opening the gap; 8. a reinforcing plate; 9. a vertical plate; 10. and (6) positioning a disc.
Detailed Description
As shown in fig. 1, the invention relates to a method for preventing deformation of a net rack structure by integral jacking, which comprises the following steps:
a. the net rack structure to be jacked is initially built on the ground corresponding to the space where the net rack structure is to be erected, and the net rack structures mentioned in the invention are all ball joint net rack structures.
b. And (3) establishing a space model of the grid structure to be jacked by utilizing BIM software, and calculating and marking the positioning coordinates of each ball joint of the grid structure in the jacking process.
c. A plurality of pairs of ball nodes 2 are selected on the grid structure, and the connecting line of each pair of ball nodes 2 is preferably a horizontal line, so that the steel stranded rope provides horizontal pulling force to the whole grid structure in the jacking process, and the grid structure is prevented from deforming in the horizontal direction.
d. A steel strand penetrating piece 3 is welded at the bottom of the selected ball joint, as shown in fig. 4, the steel strand penetrating piece 3 comprises a vertical plate 9 vertically fixedly connected to the bottom of the selected ball joint 2 and reinforcing plates 8 symmetrically arranged on two sides of the vertical plate 9, the reinforcing plates are welded on the plate surface of the vertical plate 9, and the top ends of the reinforcing plates 8 are fixedly connected with the bottom of the ball joint 2. The surface of the vertical plate 9 between the two reinforcing plates 8 is provided with three strip-shaped holes for connecting the steel stranded ropes 4 in a penetrating way. The shape of the upper edge of the vertical plate 9 and the reinforcing plate 8 is consistent with that of the bottom of the ball joint 2, so that the connecting area of the vertical plate 9 and the reinforcing plate 8 with the bottom of the ball joint 2 is larger, the connection is firmer, and the connecting mode of the steel strand penetrating piece 3 and the bottom of the ball joint 2 is fixedly connected in a welding mode in production. On each pair of ball joints 2, the surfaces of the vertical plates 9 of the steel strand penetrating pieces 3 are parallel to each other, and the surface, which is not provided with the reinforcing plate 8, of the vertical plate 9 faces outwards, so that the vertical plate 9 can bear larger pulling force given by the steel strand 4, as shown in fig. 1.
e. A plurality of steel stranded ropes 4 with corresponding lengths are prepared according to the distance between each pair of ball nodes 2, two ends of each steel stranded rope 4 are respectively penetrated in the strip-shaped holes of the steel stranded rope penetrating pieces 3 at the bottoms of each pair of ball nodes 2 corresponding to the steel stranded ropes 4, and a plurality of steel stranded ropes 4 can be penetrated in each strip-shaped hole according to strength requirements. The steel stranded rope 4 in the bar hole of the steel stranded rope penetrating piece 3 is fixed at the end of the steel stranded rope 4 through a locking piece 1 arranged outside the steel stranded rope penetrating piece 3.
The locking member 1 comprises a plurality of positioning discs 10 and a plurality of conical glue rings 6. As shown in fig. 3, the conical rubber ring 6 is a conical rubber ring, the outer side surface of the conical rubber ring is of a conical surface structure, a notch 7 formed in the length direction of the conical rubber ring 6 is formed in the outer side wall of the conical rubber ring 6, and the inner diameter of the conical rubber ring 6 can be adjusted through the notch 7, so that the steel stranded rope 4 passing through the conical rubber ring 6 can be locked and loosened. As shown in fig. 2, the positioning plate 10 is used for abutting against a vertical plate 9 without a reinforcing plate 8, the conical hole 5 with a plurality of penetrating steel strands 4 is formed in the positioning plate, the hole wall of the conical hole 5 is of a conical structure matched with the outer side wall of the conical rubber ring 6, and the aperture of the conical hole 5 is gradually increased towards the other side from the attaching surface of the positioning plate 10 and the vertical plate 9 so as to fix the conical rubber ring 6. When the steel twisted rope positioning device is used, the steel twisted rope penetrating out of the strip-shaped hole of the steel twisted rope penetrating piece 3 penetrates through the conical hole 5 on the positioning disc 10 and then penetrates through the conical rubber ring 6, and the small head end of the conical rubber ring 6 enters and is embedded in the conical hole 5 of the positioning disc 10. When the steel stranded rope 4 is pulled more tightly, the conical rubber ring 6 is embedded into the conical hole 5 of the positioning disc 10 deeper, and the conical rubber ring 6 wraps the steel stranded rope 4 more tightly, so that the end part of the steel stranded rope 4 is prevented from being separated from the steel stranded rope penetrating piece 3.
f. The locking piece 1 is adjusted to tighten the steel strand 4.
g. Jacking the grid structure in a stepping jacking mode, and measuring the coordinate position of each ball node 2 on the grid structure by using a total station (not shown in the figure) after each jacking step; when the coordinate deviation of some ball nodes 2 is found out through the positioning coordinates calculated by BIM software, the tightness of the steel stranded ropes 4 near the ball nodes is adjusted to enable the coordinates of the ball nodes 2 to be consistent with the calculated positioning coordinates, and then the next jacking of the grid structure is carried out.
h. And g, repeating the step g until the grid structure is jacked to the designed height.
The invention can accurately solve the problems of overlarge deformation accumulation and asynchronism of the ball nodes, can ensure that the grid structure realizes accurate construction according to the design requirement, and ensures the construction quality and safety of the grid structure. In addition, the invention has the advantages of low cost, simple operation, easy realization, small required operation space and higher popularization value.
Claims (1)
1. A method for preventing deformation of a net rack structure during integral jacking is characterized by comprising the following steps:
a. preliminarily building a net rack structure to be jacked on the ground corresponding to the space where the net rack structure is to be erected, wherein the net rack structure is a ball joint net rack structure;
b. building a space model of the grid structure to be jacked by using BIM software, and calculating and marking a positioning coordinate of each ball node of the grid structure in the jacking process;
c. selecting a plurality of pairs of ball nodes on the grid structure, wherein the connecting line of each pair of ball nodes is a horizontal line;
d. welding a steel strand penetrating piece at the bottom of the selected ball joint, wherein the steel strand penetrating piece is provided with a hole for penetrating and connecting a steel strand;
the steel strand penetrating piece comprises a vertical plate fixedly connected to the bottom of the ball joint and reinforcing plates symmetrically arranged on two sides of the vertical plate, the reinforcing plates are fixed on the plate surface of the vertical plate, and the top ends of the reinforcing plates are fixedly connected with the bottom of the ball joint; three holes for connecting steel stranded ropes in a penetrating manner are formed in the surface of the vertical plate between the two reinforcing plates; the vertical plates of the positioning pieces of the steel strand ropes on each pair of ball nodes are arranged in parallel, and the surface without the reinforcing plate faces outwards;
e. a plurality of steel stranded ropes with corresponding lengths are prepared according to the distance between each pair of ball nodes, a plurality of steel stranded ropes are connected between the steel stranded rope penetrating pieces at the bottoms of each pair of ball nodes in a penetrating way, and the end parts of the steel stranded ropes penetrate through holes in the steel stranded rope penetrating pieces and are fixed through locking pieces arranged outside the steel stranded rope penetrating pieces;
the locking part comprises a plurality of positioning discs used for abutting against the surface of the vertical plate and a plurality of conical rubber rings of which the outer side surfaces are of conical surface structures, and the side walls of the conical rubber rings are provided with openings arranged along the length direction of the conical rubber rings for adjusting the inner diameters of the conical rubber rings; the positioning disc is provided with a plurality of conical holes for penetrating and connecting the steel strand, the wall of each conical hole is of a conical surface structure matched with the outer side wall of the conical rubber ring, and the aperture of each conical hole is gradually increased from the abutting surface of the positioning disc and the vertical plate to the other surface; the steel strand penetrating out of the hole of the steel strand penetrating piece penetrates through the conical hole on the positioning disc and then penetrates through the conical rubber ring, and finally the conical rubber ring is correspondingly embedded in the conical hole of the positioning disc;
f. adjusting the locking piece to tighten the steel strand;
g. jacking the grid structure in a stepping jacking mode, and measuring the coordinate position of each ball node on the grid structure by using a total station after each jacking step; when the coordinate deviation of some ball nodes is found out and the positioning coordinates are calculated through BIM software, the tightness of the steel stranded ropes near the ball nodes is adjusted through the locking pieces, so that the coordinates of the ball nodes are consistent with the calculated positioning coordinates, and then the next step of jacking of the grid structure is carried out;
h. and g, repeating the step g until the grid structure is jacked to the designed height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911195621.9A CN110847385B (en) | 2019-11-29 | 2019-11-29 | Anti-deformation method for integral jacking of grid structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911195621.9A CN110847385B (en) | 2019-11-29 | 2019-11-29 | Anti-deformation method for integral jacking of grid structure |
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| CN110847385A CN110847385A (en) | 2020-02-28 |
| CN110847385B true CN110847385B (en) | 2021-06-15 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08260571A (en) * | 1995-03-20 | 1996-10-08 | Takenaka Komuten Co Ltd | Rotary lift-up construction method for dome roof |
| CN202560860U (en) * | 2012-05-25 | 2012-11-28 | 浙江瑞轴机械有限公司 | Inner taper sleeve |
| CN104947942A (en) * | 2015-05-06 | 2015-09-30 | 浙江东南网架股份有限公司 | Computer-controlled expansion accumulative lifting method for erecting super-high arch grid structure |
| CN209585646U (en) * | 2018-11-28 | 2019-11-05 | 山西汾阳丰源网架钢结构有限公司 | A kind of rack promotion temporary weld ball node |
| CN110485737A (en) * | 2019-08-20 | 2019-11-22 | 青岛一建集团有限公司 | A kind of Elements of Space Grid Truss location and installation construction method based on BIM technology |
-
2019
- 2019-11-29 CN CN201911195621.9A patent/CN110847385B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08260571A (en) * | 1995-03-20 | 1996-10-08 | Takenaka Komuten Co Ltd | Rotary lift-up construction method for dome roof |
| CN202560860U (en) * | 2012-05-25 | 2012-11-28 | 浙江瑞轴机械有限公司 | Inner taper sleeve |
| CN104947942A (en) * | 2015-05-06 | 2015-09-30 | 浙江东南网架股份有限公司 | Computer-controlled expansion accumulative lifting method for erecting super-high arch grid structure |
| CN209585646U (en) * | 2018-11-28 | 2019-11-05 | 山西汾阳丰源网架钢结构有限公司 | A kind of rack promotion temporary weld ball node |
| CN110485737A (en) * | 2019-08-20 | 2019-11-22 | 青岛一建集团有限公司 | A kind of Elements of Space Grid Truss location and installation construction method based on BIM technology |
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