CALCULATION OF A WOODEN FRAME OF A BUILDING TAKING INTO ACCOUNT THE DEVICE ON THE ROOF OF ALTERNATIVE ENERGY ELEMENTS

Abstract

One of the tasks in the development of Ukraine is the implementation of the energy 
independence  program.  The  use  of  new  technological  and  non-technological  innovations  is 
widespread both on the production side of energy comparison (alternative sources, new advanced 
energy saving technologies) and also on the consumer side. 
 An effective solution for business and production entities is the installation of solar power 
plants on the roof of buildings and structures at today.  
In  the  article  presents  the  results  of  the  examination  by  visual  and  instrumental  method  in 
connection  with  the  location  of  solar  panels  on  the  roof  of  the  building.  The  schemes  and 
parameters of external influences on the wooden parts of the object, including actual permanent and 
temporary loads, taking into account the sole weight of materials, design and technological features 
of the object. 
Due  to  the  increased  of  load  was  verification  calculation  of  the  load-bearing  wooden 
structures of the building and was developed a calculation model. 
The investigation was performed using classical calculations of structural mechanics and the 
methods of a computer simulation experiment in the software package “Lira CAD 2013”. 
The calculation of the wooden frame was carried out in the following sequence in accordance 
with applicable standards: 
- the establishment of the design scheme of the frame; 
- definition and collection of the load; 
- determination of the design efforts in the frame elements; 
- selection of cross sections of the elements. 
Analysis  of  the  results  and  field  surveys  of  wooden  structures  and  their  elements  in  the 
building  of  grain  warehouse  No.1  after  operation  for  the  more  than  75  years  in  a  variable  the 
temperature  and  humidity  conditions  is  showed  that  the  bearing  capacity  and  reliability  of  the 
bearing wooden structures is unchanged not only in the presence of various damage and defects, but 
also due to the natural aging wood. 
The results of the investigation were used to draw up the recommendations for restoring the 
properties of solid wood structures after their long-term operation.