Anti-deformation method for integral jacking of grid structure
阅读说明：本技术 一种用于网架结构整体顶升防变形方法 (Anti-deformation method for integral jacking of grid structure ) 是由 郭华新 王磊 于 2019-11-29 设计创作，主要内容包括：本发明提供了一种用于网架结构整体顶升防变形方法,该方法包括以下步骤：在与拟架设网架结构的空间对应的地面上,初步搭建待顶升的网架结构；b、利用BIM软件建立待顶升的网架结构的空间模型,计算并标记网架结构的每个球节点在顶升过程中的定位坐标；c、在网架结构上选取若干对儿球节点；d、在选定的球节点的底部焊接一个钢绞绳穿接件；e、将钢绞绳的两端分别穿在与其对应的每对儿球节点底部的钢绞绳穿接件的孔内；f、调整锁紧件,使钢绞绳拉紧；g、将网架结构采用步进式的顶升方式进行顶并调整钢绞绳的松紧度；h、重复步骤g,直至将网架结构顶升到拟定高度。(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.)
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;
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.
2. The method for preventing the net rack structure from being deformed during the integral jacking of the net rack structure as claimed in claim 1, wherein the steel strand threading part 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 surfaces 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.
3. The method for preventing the overall jacking of the grid structure from deforming as claimed in claim 2, wherein the locking member comprises a plurality of positioning discs for abutting against the faces of the vertical plates and a plurality of conical rubber rings of which the outer side faces are of a conical surface structure, and a notch arranged along the length direction of each conical rubber ring is formed in the side wall of each conical rubber ring for adjusting the inner diameter of each conical rubber ring; 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.
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
e. A plurality of steel stranded
The locking member 1 comprises a plurality of
f. The locking piece 1 is adjusted to tighten the
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
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.
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