Abstract: Ultrahigh-performance concrete (UHPC) typically contains short steel fibers with a fiber volume of 2% or larger. This relatively high fiber volume leads to high UHPC tensile strength, typically larger than 8 MPa, and ...

Abstract: An infill system for frame structures has been developed as a retrofit strategy for critical facilities. The system uses precast panels made with an engineered cementitious composite (ECC) material in lieu of a traditional ...

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Abstract: The monotonic and cyclic behavior of a proposed unbonded, posttensioned concrete bridge pier system is studied using finite-element analyses. A procedure to evaluate seismic capacities based on results from the monotonic ...

Abstract: The seismic response characteristics of a proposed unbonded posttensioned concrete bridge-pier system are evaluated. Time-history analyses are carried out on prototype designs of single-column piers and two-column bents ...

Abstract: High-performance fiber-reinforced cement-based composites (HPFRCCs) reinforced with mild steel have been proposed for use in structural elements to enhance component strength and ductility, increase damage tolerance, and ...

Abstract: Nonlinear dynamic analysis with fiber-element models is now widely used to assess the seismic response of bridge structures. The ability of such models to accurately simulate response parameters for characterizing the ...

Abstract: For efficient seismic computational analysis of reinforced concrete frame structures, a concentrated nonlinearity approach using interface elements is proposed. In the proposed model, the nonlinear response of frame ...

Abstract: Recent earthquakes around the world have demonstrated that steel moment-frame buildings designed based on older seismic provisions are seismically deficient. To enhance the seismic performance of these buildings, a new ...

Abstract: While the tensile performance of high-performance fiber-reinforced cementitious composites (HPFRCC) has been extensively studied, the crushing behavior is less understood. Notably, crushing is an important load-reduction ...