Investigating the effect of vertical load on the behavior of adobe walls under cyclic lateral loading

Document Type : Research Article

Authors

1 Civil Eng. Dept., Yazd University

2 Yazd University / member of Scientific Board

Abstract

Adobe constructions are vulnerable to lateral loading and their failure in the past earthquakes has caused severe casualties and structural damages. Nonetheless, numerous adobe buildings are still being used in seismic-prone regions worldwide, including Iran, many are of historical background. Therefore, evaluation of their lateral behavior and retrofitting stands of high priority and can lead to preserving these national assets. In this study, the cyclic lateral behavior of adobe walls made of adobe units and mud mortar was investigated under different constant axial loads. The experimental specimens were comprised of four adobe wall panels measuring 1000 mm in length, 900 mm in height, and 200 mm in thickness. The main experimental parameter was the magnitude of axial compression applied on the wall. The experimental results were compared in terms of load-displacement hysteretic curves, cracking pattern, failure mode, stiffness degradation, cumulative energy dissipation, and hysteretic damping. With increasing axial stress from 0.1 to 0.7 MPa, the failure mode was changed from shear to shear-compression. Also, with increasing axial stress, lateral resistance increased, but the corresponding displacement decreased.

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Main Subjects

References

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Amirkabir Journal of Civil Engineering
Volume 52, Issue 11
February 2021
Pages 2677-2690

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