CN102995909A - Assembly method adopting coordinate rotation for spatial reticulated shells - Google Patents

Abstract

The invention discloses an assembly method adopting coordinate rotation for spatial reticulated shells, comprising the following steps of: 1, partitioning the approximately-straight section area of a spatial structure into blocks; 2, selecting a block plan view, rotating the blocks on the plan view, and straightening the positions; 3, selecting a block front view or a block side view, and connecting the two points A and B at the inmost side of the lower chord node (a chord node close to the inner side of a shell) of each block; 4, rotating the block to lead the straight line AB to be at a vertical position; 5, defining a model to be a reticulated frame by virtue of a reticulated frame module in 3D3S software; 6, making a node number arrangement diagram and a corresponding coordinate value table; and 7, locating the horizontal coordinates X and Y of each node on an assembly platform, producing a jig frame, and then assembling. With the adoption of the method, accurate data can be effectively provided for assembly for lots of nodes on the site.

Description

A kind of space net shell rotation of coordinate assembling method

Technical field:

The invention belongs to a kind of job practices of steel building, particularly a kind of space net shell rotation of coordinate assembling method.

Background technology:

Along with the level of application of computer in design improves constantly, the profile of space structures has been not only the regular shapes such as flat and broken-line type already in the past, architects install also for construction enterprises' structure and have brought huge challenge in the own immensity imagination of performance.

The characteristics of Spatial Lattice Shells are that node is many, rod member is many, and are not suitable for factory's consolidation service.The place of construction site is compared with the platform of factory floor, and condition is very different.If node coordinate rule, node location can determine that by unwrapping wire its accuracy can satisfy the installation accuracy requirement fully.But, all irregular at the Nodes Three-dimensional coordinate, can't come in the situation of unwrapping wire with straight line or circular arc, the node locating difficulty is just quite large.

The node positioning method of simple, intuitive is former coordinate system location and the coordinate setting of horizontal plane vertical translation, and these two kinds of methods also are the most frequently used ways of present stage.Former coordinate positioning method need to be set up all round victory scaffold, and the volume of setting up and net shell lower edge volume that face covers are basic identical, bulky, and it is high to set up the long expense of required time.Horizontal plane vertical translation coordinate positioning method is with structural division, and middle net shell node absolute altitude is changed little part, moves to the installation site behind installation on ground again, like this, and just greatly economization man-hour and expense.

And for the latticed shell structure boundary member, arc curvature is minimum, substantially is approximately straight section, and vertical node is many, does not have rule, but sets up the position that scaffold can not find vertical rod substantially, and in this case, two kinds of above-mentioned methods just can't be finished this part node assembly unit work.Therefore structure must be carried out Space Rotating, be lifted into design attitude behind the installation on ground, if several points just seldom, can adopt the method for artificial hand computation to calculate new space coordinates, for worker positions provides numerical value, but for large scale structure, number of nodes is huge, it is too low that the people calculates efficient, and artificial calculating makes mistakes easily.In order to address this problem, need to find out a kind of efficient accurate coordinate location method and finish assembly unit.

Summary of the invention:

Purpose of the present invention just is to overcome above-mentioned the deficiencies in the prior art, and a kind of space net shell rotation of coordinate assembling method is provided, and the method can provide precise information for a large amount of node assembly unit in scene efficiently.

As above design, technical scheme of the present invention is: a kind of space net shell rotation of coordinate assembling method is characterized in that: comprise the steps:

1) according to structural plan and facade shape, structure is carried out subregion, the substantially upright position that keeps to the side is divided into a district, claims approximate straight section district, and middle curvature changes mild position than low height and is divided into a district, claims the mesozone; The approximate straight section district of space structures is carried out piecemeal;

2) select the piece top view, piece is rotated at top view, put on right position;

3) select piece front view or lateral view, with the most inboard 2 A of piece lower-chord panel point (by the inboard chord joint point of housing), B line;

4) with the piece rotation, make straight line AB set up mean place;

5) utilizing rack module in the 3D3S software, is rack with model definition;

6) node serial number arrangement diagram processed and corresponding coordinate figure form;

7) carry out node horizontal coordinate X, Y location at platform for lining, and make moulding bed, carry out assembly unit.

The present invention carries out Space Rotating with structure, and the auxiliary calculating of computer, and structure coordinate is exported with form, and the node assembly units a large amount of for the scene provide precise information.

Description of drawings:

Fig. 1 is the approximate straight section schematic three dimensional views of space net shell;

Fig. 2 is that approximate straight section is distinguished the piece schematic diagram;

Fig. 3 is that the piece first step horizontally rotates schematic diagram;

Fig. 4 is the piece front view;

Fig. 5 is piece second step vertical rotary schematic diagram.

The specific embodiment:

A kind of space net shell rotation of coordinate assembling method comprises the steps:

1, the approximate straight section district of space structures is carried out piecemeal; Such as Fig. 1, Fig. 2.

2, select the piece top view, piece is rotated at top view, put on right position; Such as Fig. 3

3, select main look (perhaps lateral view) with the most inboard 2 A of piece lower-chord panel point (by the inboard chord joint point of housing), B line; Fig. 4

4, with the piece rotation, make straight line AB set up mean place; Such as Fig. 5.

5, utilizing rack module in the 3D3S software, is rack with model definition.

6, node serial number arrangement diagram and corresponding coordinate figure form;

7, carry out node horizontal coordinate X, Y location at platform for lining, and make moulding bed, carry out assembly unit.

Claims (1)

1. a space net shell rotation of coordinate assembling method is characterized in that: comprise the steps:

1) according to structural plan and facade shape, structure is carried out subregion, the substantially upright position that keeps to the side is divided into a district, claims approximate straight section district, and middle curvature changes mild position than low height and is divided into a district, claims the mesozone; The approximate straight section district of space structures is carried out piecemeal;

2) select the piece top view, piece is rotated at top view, put on right position;

3) select piece front view or lateral view, with the most inboard 2 A of piece lower-chord panel point (by the inboard chord joint point of housing), B line;

4) with the piece rotation, make straight line AB set up mean place;

5) utilizing rack module in the 3D3S software, is rack with model definition;

6) node serial number arrangement diagram processed and corresponding coordinate figure form;

7) carry out node horizontal coordinate X, Y location at platform for lining, and make moulding bed, carry out assembly unit.

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