Track 2: Sustainability and Conservation of Built Heritage in the Americas

APT Student Scholar Abstract and Application

Retrofitting of concrete encased beam-column connection of an old historic building using fiber reinforced polymer (FRP).

Presenter(s)

• 

  Nitisha Parajuli, Bachelors in Civil Engineering

  Graduate Assistant
  Southern Illinois University Edwardsville

Session Chair(s)

• 

  Kyle Normandin, FAPT, PAIC

  Associate Principal
  Wiss, Janney, Elstner Associates, Inc.

With the increasing demand on rehabilitation of historic structures, much research has been completed on retrofitting techniques of old steel frame buildings. Many existing buildings in the United States are concrete encased steel frame buildings designed in the early 1900s for the advantages they provide such as resistance to fire and corrosion. With age, these kinds of old buildings have lost their strength and need efforts to function efficiently for future uses. This research has focused on nonlinear finite element analysis of a concrete-encased beam-column connection of an old historic building, the Syndicate from St. Louis, MO, to investigate the hysteresis behavior of the steel frame before and after the application of the FRP confinement. The study aims to assess the behavior of the connection when it is subjected to dynamic loading. The moment resistance capacity of the riveted beam-column connection is compared against the retrofitted specimen to study the effect of the application of FRP using finite element software ANSYS.

Learning Objectives:

• Be proficient in finite element analysis software and prepare a finite element model of the structure.
• Discuss the possible FRP retrofitting measures that can be adopted to strengthen the old building connection.
• Conduct a non-linear analysis of the structure system.
• Discuss the behavior of the riveted connection and concrete confinement used in old steel frames.