Fire protection of bolt connection in steel structures : The need for fire protection in bolt connections
Dzhavadov, David (2021)
2021
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-202103314061
https://urn.fi/URN:NBN:fi:amk-202103314061
Tiivistelmä
The purpose of this Bachelor’s thesis project is to perform a research on
the need for fire protection of bolts in steel beam-to-column
connections. Based on the literature study about the fire protection of
steel elements, there are different cases when bolts should be protected
or stay unprotected. The comparison of the results from different fire
tests should be observed to make a conclusive decision about the need
for fire protection of the bolts.
This thesis introduces the types of fire protections for bolts, ways to
calculate the temperatures of unprotected bolts and their resistances on
fire according to the experiments and guidance books. The goal is to
make a design tool to evaluate the need of individual fire protection for
the bolts based on the temperature and the properties’ changes in case
of fire.
As a result, this thesis demonstrates a calculation method for the
temperature rise of both unprotected and protected steel elements in
the case fire. The fire protection by intumescent paint is used in the
calculations. Based on the research, the formula of temperature rise in
bolt assembly is summarized and used as a basis of the design tool. The
excel tool developed in this thesis for bolt temperature and strength
calculations is based on the example tool from commissioner of the
thesis, SWECO Finland and it will be used inside the company.
the need for fire protection of bolts in steel beam-to-column
connections. Based on the literature study about the fire protection of
steel elements, there are different cases when bolts should be protected
or stay unprotected. The comparison of the results from different fire
tests should be observed to make a conclusive decision about the need
for fire protection of the bolts.
This thesis introduces the types of fire protections for bolts, ways to
calculate the temperatures of unprotected bolts and their resistances on
fire according to the experiments and guidance books. The goal is to
make a design tool to evaluate the need of individual fire protection for
the bolts based on the temperature and the properties’ changes in case
of fire.
As a result, this thesis demonstrates a calculation method for the
temperature rise of both unprotected and protected steel elements in
the case fire. The fire protection by intumescent paint is used in the
calculations. Based on the research, the formula of temperature rise in
bolt assembly is summarized and used as a basis of the design tool. The
excel tool developed in this thesis for bolt temperature and strength
calculations is based on the example tool from commissioner of the
thesis, SWECO Finland and it will be used inside the company.