Keywords
Non-contact lap splice, UHPC, Seismic Design
Abstract
Controlling the location and strength of plastic hinges is crucial for maintaining the integrity of seismic-resistant structures during seismic events. Although advanced materials, new structural systems, and supplemental damping devices have been extensively researched, conventional reinforced concrete detailing can also effectively achieve this control. This study explores a controllable slippage mechanism in lap-splice configurations of monolithic ultra-high performance concrete (UHPC) members to regulate the location and capacity of plastic hinges in concrete building frames. UHPC's superior tensile, compressive, and bond strengths, compared to normal strength concrete (NSC), enable the use of strategically placed lap splices with short lap lengths. This arrangement allows the reinforcing bars to slip in a controlled manner, which may challenge existing NSC detailing standards. The controlled slippage within the non-contact lap splices, determined by the lap length, is designed to set hinge capacity and dissipate energy through both the friction between the reinforcement and concrete and the yielding of continuous mild steel. The experimental program demonstrates the behavior of these novel hinges in large-scale monolithic building girders and beam-column connections under reversed cyclic loads. Additionally, component-level pull-out and flexural tests involving non-contact lap splices were conducted to support the design of large-scale specimens and to calibrate analytical models of the bond-slip behavior.
Completion Date
2024
Semester
Fall
Committee Chair
Apostolakis, Georgios
Degree
Doctor of Philosophy (Ph.D.)
College
College of Engineering and Computer Science
Department
Department of Civil, Environmental and Construction Engineering
Degree Program
Civil Engineering
Format
Identifier
DP0029051
Language
English
Release Date
12-15-2024
Access Status
Dissertation
Campus Location
Orlando (Main) Campus
STARS Citation
Wang, Tiancheng, "Non-Contact Lap-Splice Design with Ultra-High-Performance-Concrete for Seismic Buildings" (2024). Graduate Thesis and Dissertation post-2024. 83.
https://stars.library.ucf.edu/etd2024/83
Accessibility Status
PDF accessibility verified using Adobe Acrobat Pro Accessibility Checker