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features of settlement models of precast geodetic domes-covers.

Possibilities of offered national teams panel or piramidalnoyokarkasnyh geodetic domes-covers allow to solve effectively designing problems vsparushennyh designs of coatings of buildings. Collected from the integrated elements - dome-cover panels have the raised rigidness and it provides their general and local stability.

However switch connection of apertures, depression of supporters complicates work of a geodetic dome and does this system by a through rod spherical shell.

Constructive decisions of domes-covers offered more low on the basis of new razrezok, presented in gl. 2 can be used at creation of the one-zone or two-zone envelopments made of various materials. Usually one-zone envelopments are applied at small and average overlapped spans, and two-zone - at average and big spans. Besides, designs of envelopments are influenced by functional purposes of buildings which their features nagruzheny can be heated or not heated, stationary or time, and also, namely, necessity of perception of point loads suspended to them. We will notice, that designs of precast envelopments on the basis of specified razrezok can be made of various materials but while the preference is given to a steel and a tree.

For an estimation of the offered is constructive-technological decisions the analysis of designing of steel domes of small spans is carried out with
Parities of a boom of ascending gradient to span more than 0,5-0,6, especially claimed for auxiliary site development. But many conclusions can be applied and for vsparushennyh domes of the most effective spans from 30 to 100 m. Developed domes-covers have offered in chapter 2 razrezki on the basis of geodetic 320-grannika on the resulted grading 20ТАТ320 [4].

At designing of a dome from pyramidal steel frame panels values of geometrical deflexions and parametres of geometry of a design should be defined at calculation under the deformed scheme, and also problems of a theoretical estimation of size of critical central loading. Also it is necessary to mean, that at dome assemblage there is a possibility of sorting of already made component parts on the sizes for a site joint of panels and then sortings of panels for their placing in coating system. It is in already natural way allows to make a rational apportion of panels taking into account the deformed schemes of coatings. By means of sorting and a mirror site joint of panels it is possible to overcome influence of imperfections on formation of initial forms of loss of stability of a mesh or geodetic dome.

In geodetic domes offered razrezok there is a possibility of such placing of wrong hexagons and correct pentagons when reduction not only numbers of standard sizes of elements, but also numbers of standard sizes of basic knots is provided, at the expense of their device at one level more low or above equator (chapter 2, fig. 2.31 and, 2.47), as is shown in drawing 3.1. Razrezka such dome has 5 standard sizes of rods, 2 standard sizes of assembly elements and two symmetric standard sizes of basic knot (fig. 3.1 see).

For maintenance of reliability of precast geodetic domes it is accepted various variants of hinge joints and variants of rigid central connections between panels and in panels. These connections should
To provide necessary assembly rigidness, both separate frame panels-pyramids, and assembly parts of a dome (fig. 5) at assemblage and its installation in design position [29].

Fig. 3.1. The scheme of a framing of a coating on the basis of 320 - grannika, having 3 standard sizes of assembly supporters: and - the top view; - a side view.

3.1.2.

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A source: Antoshkin Vasily Dmitrievich. is constructive-TECHNOLOGICAL DECISIONS of PRECAST SPHERICAL SHELLS. The dissertation on competition of a scientific degree of a Dr.Sci.Tech. Saransk - 2017. 2017

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