GT STRUDL was used to model the L-shaped Turbine Generator Building that is essentially an open bay structure with a 7 million pounds Steam Condenser Unit mounted on the roof. The location and extension of the Condenser above the roof on one leg of the L shaped building induces eccentric wind/seismic loads and torsion loading of the TGB. The design challenge and the use of GT STRUDL in the design analysis process are discussed.
The geometry of the framing is developed using FRAMEWORKS add-on package to Microstation PDS. The use of these programs allowed the development of production drawings and interface with a 3-D plant viewer package. The FRAMEWORKS add-on package contains an option for generating a GT STRUDL input file. The GT STRUDL input file provides the model geometry, member properties, materials, releases and some of the loading conditions. The FRAMEWORKS generated GT STRUDL steel frame model was enhanced to model a 9-inch thick concrete slab on the TGB roof and to model the ACC loads. The interface between the ACC unit and the turbine building roof also added to the complexity of the GT STRUDL model due to the mismatch in ACC unit columns and the structural building steel.
The major design challenge is this building design is the eccentric wind/seismic loading due to the torsion loading and limited bracing areas. The key design considerations include:
B.S. Mechanical Engineering, Southeastern Massachusetts University
Professional Engineer - Massachusetts
Committees and Activities
ASME SC-XI Subgroup on Containment - Previous Member
ASME SC-XI Working Group on Concrete Pressure Components - Previous Member and Secretary
Ward, P.W., T.J. Lynch, F.R. Harty, Jr., K. Massey, H. Riddle. "Elimination of Surge Tanks at Saluda Hydroelectric Plant." WaterPower 1993, Proceedings of the International Conference on Hydropower, 1993.
Ward, P.W., F.R. Harty, Jr., F.E. Depenbrock, D.L. Shectman. "Options in Energy Storage Technologies." The Electricity Journal, July/August 1994.
Ward, P.W., F.R. Harty Jr., T.L. Rineer, J.B. Nystrom. "Safe Harbor Hydroelectric Station Index Test, Flow Measurements, and Hydro Operating Curve Revision," ASCE Waterpower 1995, Proceedings of the International Conference on Hydropower, 1995.
Ward, P.W., Taphose K. Shome, "Containment Liner Evaluation and Aging Degradation Management Program," 1995 ASME/JSME Pressure Vessels and Piping Conference.
Professional Engineer - Massachusetts, New York, Pennsylvania, Texas, Arizona, Ohio, North Carolina
American Society of Civil Engineers - Member
American Concrete Institute - Member
American Institute of Steel Construction
Institute of Civil Engineers - Graduate Member
"The Effects of Drying on the Freeze-Thaw Durability of Concrete," University of Illinois Engineering Experiment Station, Bulletin 506 by A. Y. C. Wong, C. L. Anderson, H. K. Hilsdorf
"Effects of Diaphragms on Load Distribution of Continuous Slab Girder Bridges" by A. Y. C. Wong and W. L. Gamble - University of Illinois Structural Research Series, SRS 391
"Probabilistic Prediction of Floor Response Spectra" by Manas K. Chakravorty, A. Y. C. Wong, D. C. Foster - Third Canadian Conference on Earthquake Engineering, June 4-6, 1979, Montreal, Canada
"A Frequency Domain Approach to Seismic Analysis of Multiple Supported Secondary Systems" by Manas K. Chakravorty, A. Y. C. Wong, M. B. Stetson, International Meeting on Fast Reactor Safety Technology, August 19-23, 1979, Seattle, Washington
Report on the Review Team on the Department of Energy Natural Phenomena Hazard Mitigation Order and Standards