RESISTÊNCIA À TRAÇÃO DE UM SISTEMA DE ANCORAGEM EMBUTIDO EM CONCRETO SUJEITO A CARGA DE IMPACTO / TENSILE STRENGTH OF A CONCRETE ANCHORING SUBJECTED TO IMPACT LOAD

AUTOR(ES)

JOAQUIM NUNES MARTINS JUNIOR

DATA DE PUBLICAÇÃO

2006

RESUMO

This work investigates the strength of a concrete anchor system constituted of headed studs embedded in concrete subjected to impact tension load. The main variable was the loading rate which varied from a minimum of 0,015 kN/s (static) to a maximum of 54885 kN/s. The anchor system was designed so that the failure was governed by concrete cone breakout. Eleven concrete blocks with a single headed stud were tested under different loading rates. In addition, fifteen concrete cylinders subjected to compression along a diameter (split cylinder test) and nine headed studs subjected to tension were tested under different loading rates in order to investigate the effects of the loading rate on the strength of concrete and steel separately. The results showed that the area and the angle of the concrete cone were not affected by the loading rate. The failure load of the concrete cone increases as the loading rate increases and this phenomenon can be described by a logarithmic function. The concrete split tensile strength and the steel tensile strength also increase as the loading rate increases.

ASSUNTO(S)

concreto carga de impacto sistemas de ancoragem fasteners concrete resistencia a tracao mooring systems splitting tensile strength chumbadores impact load

Documentos Relacionados

• ESTUDO EXPERIMENTAL DA RESISTÊNCIA À TRAÇÃO DE PLACAS DE ANCORAGEM EMBUTIDAS EM CONCRETO
• Prova de carga em estruturas de concreto
• Joints in concrete pavements: load transfer devices
• Avaliação da resistência a tração de diferentes enxertos em calvária de ratos
• COMPORTAMENTO DE VIGAS DE CONCRETO ARMADO REFORÇADAS COM CFC SUJEITAS A CARGA DE IMPACTO