T BEAM - FALL 2010 - SENIOR CONCRETE - University of Houston Downtown

- 24' T Beam
- Lightweight Concrete 115 lb/cu ft
- #10 Rebar 60ksi, no cover
- .25" dia stirrup "wrap around" T every 9", tightly spaced around supports.
- Distributed load 2 nodal loads
- 120, 350 ohm strain gauges
- Vishay monitoring instruments
- Empirical data collection

22.5 Kips Capacity, 11.25 Kips at each node.
Beam was unloaded near capacity with major cracking and large deflection at center. Beam was unloaded for future analysis. 2 Beams were conrtsucted, the first beam had a failure in the flange under a side load conditon/ the resulting stress ruptured the flange and the test failed to complete. This was the reason for switching to a distributed load system. The load distribution beam was also designed in class although fabricated by an outside sub contractor.

The concrete desgn mix was specified by the class and was tested to 10 ksi consistently at 28 days. In some cases more than 10 ksi was obtained on some cylinders. This was done during the semester.

This is video of initial loading conditions....

Category:

Science & Technology

Tags:

• continuous
• beam
• column
• conrete
• cement
• flange
• steel
• loaded
• loading
• stress
• torsion
• strain
• vishay
• excel
• lab
• structural
• engineering
• team
• group
• senior
• web
• rupture
• failure
• defelction
• axial
• nodal
• enerpac
• hydraulic
• jack
• welded
• hss
• pipe
• side
• load
• capacity
• moment
• inertia
• youngs
• modulus
• material
• testing