Seismic performance of gravity-load designed concrete frames infilled with low-strength masonry

Date

2015-01-01

Author

Siddiqui, Umair A.
Sucuoğlu, Haluk
Yakut, Ahmet

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

127
views

0
downloads

This study compares the seismic performances of two reinforced concrete frame specimens tested by the pseudo-dynamic procedure. The pair of 3-storey, 3-bay frames specimens are constructed with typical characteristics of older construction which is lacking seismic design. One of the specimens is a bare frame while the other is infilled with low-strength autoclave aerated concrete (AAC) block masonry. The focus of this study is to investigate the influence of low strength masonry infill walls on the seismic response of older RC frames designed for gravity loads. It is found that the presence of weak infill walls considerably reduce deformations and damage in the upper stories while their influence at the critical ground story is not all that positive. Infill walls tend to localize damage at the critical story due to a peculiar frame-infill interaction, and impose larger internal force and deformation demands on the columns and beams bounding the infills. Therefore the general belief in earthquake engineering that infills develop a second line of defence against lateral forces in seismically deficient frames is nullified in case of low-strength infill walls in the presented experimental research.

Subject Keywords

Gravity-load design, Performance evaluation, Pseudo-dynamic testing, AAC, Low-strength infills, Infilled frames

URI

https://hdl.handle.net/11511/37575

Journal

EARTHQUAKES AND STRUCTURES

DOI

https://doi.org/10.12989/eas.2015.8.1.019

Collections

Department of Civil Engineering, Article

Suggestions

OpenMETU
Core

Seismic Retrofit of Deficient RC Structures with Internal Steel Frames ÖZÇELİK, RAMAZAN; Akpinar, Ugur; Binici, Barış (2011-12-01) This paper describes an experimental study on internal steel frames (ISFs) to retrofit seismically deficient reinforced concrete (RC) frames. One reference and six strengthened frame specimens were tested under constant gravity load and cyclic lateral displacement excursions. Installation of the ISF with and without anchors to the RC frame was examined. Test results showed that the snug tight ISF installed inside an RC frame may suffice to realize the benefit of implementing ISFs. If the horizontal shear st...
Seismic performance of chevron braced steel frames with and without viscous fluid dampers as a function of ground motion and damper characteristics Dicleli, Murat (Elsevier BV, 2007-08-01) This study is aimed at comparing the seismic performance of steel chevron braced frames (CBFs) with and without viscous fluid dampers (VFDs) as a function of the intensity and frequency characteristics of the ground motion and VFD parameters. For this purpose, comparative nonlinear time history (NLTH) analyses of single and multiple story CBFs with and without VFDs are conducted using ground motions with various frequency characteristics scaled to represent small, moderate and large intensity earthquakes. A...
Seismic Performance of Integral Bridges as a Function of Foundation Soil Stiffness Dicleli, Murat (2012-09-24) In this study, the effect of foundation soil stiffness on the seismic performance of integral bridges (IBs) is investigated. For this purpose, nonlinear structural models of a two-span IB with four different foundation soil stiffness types (loose, medium, medium-dense and dense sands) are built. In the nonlinear structural models, nonlinear soil-structure interaction including free-field effects is considered. Then, the nonlinear time history analyses of the IB models are conducted using a set of ground mot...
Experimental evaluation of the in-plane behaviour of masonry wall infilled RC frames Suzuki, Tomomi; Choi, Ho; Sanada, Yasushi; Nakano, Yoshiaki; Matsukawa, Kazuto; Paul, Devjyoti; Gulkan, Polat; Binici, Barış (2017-10-01) This study focuses on the in-plane behaviour of unreinforced masonry (URM) infill walls installed in reinforced concrete (RC) frames. Five 1/4-scale model frames were designed based on a prototype RC building with URM infill walls in Turkey. The experimental parameters were the layout of the URM infill (its presence or absence), number of spans (single or double), number of stories (single or double), and stacking pattern of the URM infill (horizontal or vertical). Static cyclic loading tests were conducted...
Seismic behavior of vertical reinforced autoclaved aerated concrete (AAC) panel walls Taghipour, Armin; Canbay, Erdem; Binici, Barış; Department of Civil Engineering (2016) In this study, the in-plane seismic behavior of autoclaved aerated concrete (AAC) vertical load-bearing wall panels is examined. Because of the complex behavior of AAC shear walls under cyclic lateral loading and axial load, the design provisions are fundamentally important. The main objective of this study is to validate proposed design provisions for AAC structures in Turkey. Six specimens with different properties and geometries were constructed and tested at Structural Mechanics Laboratory of METU. Mech...

Citation Formats

U. A. Siddiqui, H. Sucuoğlu, and A. Yakut, “Seismic performance of gravity-load designed concrete frames infilled with low-strength masonry,” EARTHQUAKES AND STRUCTURES, pp. 19–35, 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/37575.