Roberto Leon | Virginia Tech (original) (raw)

Roberto Leon

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Papers by Roberto Leon

Research paper thumbnail of Lateral Load Tests on a Two-Story Unreinforced Masonry Building

Journal of Structural Engineering-asce, 2006

Lateral Load Tests on a Two-Story Unreinforced Masonry Building. [Journal of Structural Engineeri... more Lateral Load Tests on a Two-Story Unreinforced Masonry Building. [Journal of Structural Engineering 132, 643 (2006)]. Tianyi Yi, Franklin L. Moon, Roberto T. Leon, Lawrence F. Kahn. Abstract. A full-scale two-story unreinforced ...

Research paper thumbnail of Analyses of a Two-Story Unreinforced Masonry Building

Journal of Structural Engineering-asce, 2006

Analyses of a Two-Story Unreinforced Masonry Building. [Journal of Structural Engineering 132, 65... more Analyses of a Two-Story Unreinforced Masonry Building. [Journal of Structural Engineering 132, 653 (2006)]. Tianyi Yi, Franklin L. Moon, Roberto T. Leon, Lawrence F. Kahn. Abstract. A variety of elastic and inelastic analytical ...

Research paper thumbnail of Recommendations for Seismic Evaluation and Retrofit of Low-Rise URM Structures

Journal of Structural Engineering-asce, 2006

Recommendations for Seismic Evaluation and Retrofit of Low-Rise URM Structures. [Journal of Struc... more Recommendations for Seismic Evaluation and Retrofit of Low-Rise URM Structures. [Journal of Structural Engineering 132, 663 (2006)]. Franklin L. Moon, Tianyi Yi, Roberto T. Leon, Lawrence F. Kahn. Abstract. Based on the results ...

Research paper thumbnail of Steel Beam-Column Connections Using Shape Memory Alloys

Journal of Structural Engineering-asce, 2004

Research paper thumbnail of Seismic Response of Multiple Span Steel Bridges in Central and Southeastern United States. I: As Built

Journal of Bridge Engineering, 2004

The seismic response of typical multispan simply supported ͑MSSS͒ and multispan continuous steel ... more The seismic response of typical multispan simply supported ͑MSSS͒ and multispan continuous steel girder bridges in the central and southeastern United States is evaluated. Nonlinear time history analyses are conducted using synthetic ground motion for three cities for 475 and 2,475-year return period earthquakes ͑10 and 2% probability of exceedance in 50 years͒. The results indicate that the seismic response for the 475-year return period earthquake would lead to an essentially linear response in typical bridges. However, the seismic response for a 2,475-year return period earthquake resulted in significant demands on nonductile columns, fixed and expansion bearings, and abutments. In particular, pounding between decks in the MSSS bridge would result in significant damage to steel bearings and would lead to the toppling of rocker bearings, which may result in unseating of the bridge deck.

Research paper thumbnail of Lateral Load Tests on a Two-Story Unreinforced Masonry Building

Journal of Structural Engineering-asce, 2006

Lateral Load Tests on a Two-Story Unreinforced Masonry Building. [Journal of Structural Engineeri... more Lateral Load Tests on a Two-Story Unreinforced Masonry Building. [Journal of Structural Engineering 132, 643 (2006)]. Tianyi Yi, Franklin L. Moon, Roberto T. Leon, Lawrence F. Kahn. Abstract. A full-scale two-story unreinforced ...

Research paper thumbnail of Analyses of a Two-Story Unreinforced Masonry Building

Journal of Structural Engineering-asce, 2006

Analyses of a Two-Story Unreinforced Masonry Building. [Journal of Structural Engineering 132, 65... more Analyses of a Two-Story Unreinforced Masonry Building. [Journal of Structural Engineering 132, 653 (2006)]. Tianyi Yi, Franklin L. Moon, Roberto T. Leon, Lawrence F. Kahn. Abstract. A variety of elastic and inelastic analytical ...

Research paper thumbnail of Recommendations for Seismic Evaluation and Retrofit of Low-Rise URM Structures

Journal of Structural Engineering-asce, 2006

Recommendations for Seismic Evaluation and Retrofit of Low-Rise URM Structures. [Journal of Struc... more Recommendations for Seismic Evaluation and Retrofit of Low-Rise URM Structures. [Journal of Structural Engineering 132, 663 (2006)]. Franklin L. Moon, Tianyi Yi, Roberto T. Leon, Lawrence F. Kahn. Abstract. Based on the results ...

Research paper thumbnail of Steel Beam-Column Connections Using Shape Memory Alloys

Journal of Structural Engineering-asce, 2004

Research paper thumbnail of Seismic Response of Multiple Span Steel Bridges in Central and Southeastern United States. I: As Built

Journal of Bridge Engineering, 2004

The seismic response of typical multispan simply supported ͑MSSS͒ and multispan continuous steel ... more The seismic response of typical multispan simply supported ͑MSSS͒ and multispan continuous steel girder bridges in the central and southeastern United States is evaluated. Nonlinear time history analyses are conducted using synthetic ground motion for three cities for 475 and 2,475-year return period earthquakes ͑10 and 2% probability of exceedance in 50 years͒. The results indicate that the seismic response for the 475-year return period earthquake would lead to an essentially linear response in typical bridges. However, the seismic response for a 2,475-year return period earthquake resulted in significant demands on nonductile columns, fixed and expansion bearings, and abutments. In particular, pounding between decks in the MSSS bridge would result in significant damage to steel bearings and would lead to the toppling of rocker bearings, which may result in unseating of the bridge deck.

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