THE DECREASE IN THE LEVEL OF CORROSION HAZARD IN THE RATIONAL DESIGN OF METAL STRUCTURES

Abstract

 Expansion  of  functional  possibilities  of  the  use  of  combined  designs  in  the 
construction, improvement of architectural expressiveness of buildings and structures determine the 
need  for  improved  requirements  to  ensure  the  quality  and  reliability  of  means  and  methods  of 
corrosion protection. Currently, the development of computational methods to assess the reliability 
and  structural  safety  associated  with  the  construction  of  in-formation-analytical  database  key 
parameters of corrosion condition of metal construction. Methodology. This way creates the basis 
for  setting  and  implementing  management  tasks  operational  life  of  buildings  and  structures  in 
corrosive  environments  by  improving  the  quality  and  reliability  of  primary  and  secondary 
protection  of  steel  structures  based  on  the  level  of  corrosion  hazard.  Results.  When  using  the 
principles of the process approach is the formulation and implementation of tasks of management of 
operational  service  life  in  corrosive  environments.  The  principles  of  ensuring  safety  in  terms  of 
corrosion risk include the rationale for the sequence of steps to evaluate the survivability of building 
structures based on the principles of robust design, improvement and control measures the primary 
and secondary corrosion protection. Scientific novelty. The implementation of protection measures 
against  corrosion  according  to  the  corrosion  risk  criterion  helps  to  ensure  the  requirements  of 
reliability of building structures in accordance with the design provisions of limit state method and 
to solve the problems of control of technological security for the rated life of construction projects. 
objects.  Practical  significance.  The  proposed  generalized  indicators  of  the  actual  structures’ 
corrosion  state  determine  the  structure’s  operability  as  a  whole.  The  functional  dependencies 
between  the  operability  of  the  main  and  auxiliary  structures  are  established.  The  relationship 
between the values of corrosion resistance indicators and metal structures durability are determined. 
Actual technical condition control consists of checking that the values of these indicators are within 
acceptable limits. Taking into account the degree of operating environment aggressiveness is one of 
the determining factors in order to ensure the secondary protection effectiveness against corrosion. 
This procedure is the basis for the rational specifications appointment for anti-corrosion protection 
systems with subsequent display in the design and technological documentation.