Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List


PhD dissertation_final.pdf (38.66 MB)

ETD Abstract Container

Abstract Header

Collapse Experiments and Assessment of Masonry Wall Buildings

Li, Kai
http://rave.ohiolink.edu/etdc/view?acc_num=osu1503265342241364

Abstract Details

2017, Doctor of Philosophy, Ohio State University, Civil Engineering.
Progressive collapse is partial or complete collapse of a building, which is triggered by the sudden loss of load-bearing structural elements such as columns and walls. Many computational research studies have been conducted to investigate the progressive collapse mechanism and validation of current design guidelines. However, very few full-scale experiments have been conducted to produce experimental evidence and to evaluate and validate theoretical models. In this dissertation, the progressive collapse performance of masonry wall structures and a steel structure with infill walls have been investigated. Two existing wall structure buildings on the Ohio State University campus (Blackburn House and Nosker House) were tested by physically removing four exterior load-bearing walls consecutively. The mechanical response, including deflection of beams and strain variation in reinforced steel and CMU walls due to the sudden loss of walls, were measured by displacement sensors and strain gauges. Two-dimensional and three-dimensional models were developed using the structural analysis program SAP2000 to simulate the response of test buildings. The calculated response was compared with the experimental data measured in the field. The progressive collapse risk probabilities are evaluated by using current guidelines, and recommendations are made based on the numerical and experimental data generated in this research. New demand capacity ratio acceptance criteria are proposed for progressive collapse evaluation of masonry wall structures. A load increase factor is proposed to perform alternate load path analysis of masonry wall structures. The steel frame building with unreinforced masonry infill walls, Haskett Hall, was previously tested by removing a first story column. Progressive collapse performance of the structure and the contribution of infill walls are examined by modeling the masonry infill walls in the structural analysis program. Based on the numerical simulations, the effects and contribution of infill walls are investigated. The non-contact measurement approaches based on photogrammetry techniques are applied in this research to track the markers’ movements on the building facade during the wall removal experiments. It is concluded that the masonry wall structures have much more redundancy against progressive collapse. The gravity loads are redistributed uniformly through the slabs to load-bearing walls. Reinforced concrete beams turns to be the most critical structural elements, which need careful checks and evaluations for progressive collapse. Masonry infill walls help to stiffen the steel frame structure and contribute in progressive collapse resistance.
Halil Sezen (Advisor)
Alper Yilmaz (Committee Member)
Trunjit Butalia (Committee Member)
Chen Qian (Committee Member)
389 p.
Civil Engineering
Masonry wall structure; progressive collapse; full-scale building test; load-bearing wall removal; SAP2000 analysis; SAP2000 simulation; DIF and LIF

Recommended Citations

Citations

  • Li, K. (2017). Collapse Experiments and Assessment of Masonry Wall Buildings [Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1503265342241364

    APA Style (7th edition)

  • Li, Kai. Collapse Experiments and Assessment of Masonry Wall Buildings. 2017. Ohio State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1503265342241364.

    MLA Style (8th edition)

  • Li, Kai. "Collapse Experiments and Assessment of Masonry Wall Buildings." Doctoral dissertation, Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1503265342241364

    Chicago Manual of Style (17th edition)

osu1503265342241364
345
© 2017, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.