Title:
Behavior of Earthquake-Resistant Rectangular Walls with Mechanical Splices
Author(s):
Utsav Neupane,
Publication:
Web Session
Volume:
ws_S23_UtsavNeupane.pdf
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
4/2/2023
Abstract:
A series of tests is underway that aims to establish whether, and under what conditions, mechanical splices can be safely used with Grade 100 (690) reinforcement at the base of a structural wall subjected to earthquake-induced displacement demands. These tests are necessary because ACI 318-19 prohibits (1) lap splices and (2) mechanical couplers for Grade 100 (690) reinforcement in special structural walls where longitudinal reinforcement yielding is likely to occur. These prohibitions make it difficult to construct special structural walls economically with Grade 100 (690) reinforcement. The test series includes three large-scale reinforced concrete wall specimens subjected to reversed cyclic displacements. Variables include mechanical splice length and the type of splice-bar connection. The influence of the mechanical splice on wall strength, deformation capacity, and failure mode are examined. The effect of the mechanical splice on bar strain demands and wall deformations near the wall base are also reported.