@mastersthesis {bnh-6863, title = {Seismic Retrofitting of Reinforced Concrete Beam-Column Joints Using Diagonal Haunch}, year = {2020}, month = {04/2020}, school = {Swinburne }, address = {Melbourne}, abstract = {

The thesis investigates the feasibility of using single diagonal haunch with post-installed anchors for improving the seismic performance of limited-ductile beam-column joints in reinforced concrete structures. This straightforward, less-invasive and architecturally-favourable solution can result in reducing the effect of seismic actions on buildings and consequently diminishing casualties.

}, keywords = {beam-column joints, buildings, earthquakes, reinforced concrete structures, seismic performance}, url = {https://researchbank.swinburne.edu.au/items/4730e574-60a5-421c-a619-f2def494e1a2/1/}, author = {Zabihi, Alireza} } @article {bnh-6011, title = {Design procedure for seismic retrofit of RC beam-column joint using single diagonal haunch}, journal = {Structural Engineering and Mechanics}, volume = {71}, year = {2019}, month = {08/2019}, pages = {341-350}, abstract = {

Exterior beam-column joint is typically the weakest link in a limited-ductile reinforced concrete (RC) frame structure. The use of diagonal haunch element has been considered as a desirable seismic retrofit option for reducing the seismic demand at the joint. Previous research globally has focused on implementing double haunches, while the use of single haunch element as a less-invasive and more architecturally favorable retrofit option has not been investigated. In this paper, the key formulations and a design procedure for the single haunch system for retrofitting RC exterior beam-column joint are developed. An application of the proposed design procedure is then illustrated through a case study.

}, keywords = {limited-ductile; RC frame; exterior beam-column joint; seismic retrofit; single diagonal haunch}, doi = {https://doi.org/10.12989/sem.2019.71.4.341}, url = {http://koreascience.or.kr/article/JAKO201924750736475.page}, author = {Zabihi, Alireza and Hing-Ho Tsang and Emad F Gad and John Wilson} } @article {bnh-4692, title = {Seismic retrofit of exterior RC beam-column joint using diagonal haunch}, journal = {Engineering Structures}, volume = {174}, year = {2018}, month = {01/2018}, abstract = {

Exterior beam-column joint is typically the weakest link in a limited-ductile RC frame structure. The use of diagonal haunch element has been considered as a desirable seismic retrofit option for reducing the seismic demand at the joint. Previous research globally has focused on implementing double haunches, whilst the performance of using single haunch element as a less-invasive and more architecturally favourable retrofit option has not been investigated. In this study, the feasibility of using a single haunch system for retrofitting RC exterior beam-column joint is explored. This paper presents the derivation of the key formulations for the implementation of a single diagonal haunch as well as the generalization of the formulations for all three systems: the non-retrofitted subassembly, the double haunch retrofitting system, and the single haunch retrofitting system. The formulations have then been validated by available experimental data for non-retrofitted subassembly and double haunch retrofitting system. Finally, the effectiveness of the single haunch retrofitting system is compared with that of the double haunch retrofitting system through a parametric study.

}, keywords = {Exterior beam-column joint, limited-ductile, RC frame, Seismic retrofit, Single diagonal haunch.}, doi = {10.1016}, url = {https://www.sciencedirect.com/science/article/pii/S0141029617328857}, author = {Zabihi, Alireza and Hing-Ho Tsang and Emad F Gad and John Wilson} } @conference {bnh-6026, title = {Analytical Model for Seismic Retrofit of Concrete Beam-Column Joint using Diagonal Metallic Haunch}, booktitle = {World Congress on Advances in Structural Engineering and Mechanics}, year = {2017}, month = {01/09/2017}, publisher = {Swinburne University of Technology}, organization = {Swinburne University of Technology}, address = {Korea}, abstract = {

Exterior beam-column joint is typically the weakest link in a limited-ductile concrete frame structure. The use of diagonal haunch element has been considered as a desirable seismic retrofit option for reducing the seismic demand at the joint. Previous research globally has focused on implementing double haunches, whilst the performance of using single haunch element as a less-invasive and more architecturally favourable retrofit option has not been investigated. In this study, the feasibility of using a single haunch system for retrofitting RC exterior beam-column joint is explored. This paper presents the key formulations and illustrates its effectiveness by investigating the changes in the shear demand at the joint through a case study.

}, keywords = {building, building disaster proof, construction, Emergency management, engineering, hazards, risk management}, author = {Hing-Ho Tsang and Zabihi, Alireza and Emad F Gad and John Wilson} } @conference {bnh-6028, title = {Analytical development of seismic retrofit technique for RC beam-column joint using single diagonal haunch}, booktitle = {24th Australian Conference on the Mechanics of Structures and Materials}, year = {2016}, month = {12/2016}, publisher = {Swinburne University of Technology}, organization = {Swinburne University of Technology}, address = {Perth, Australia}, abstract = {

Exterior beam-column joint is typically the weakest link in a limited-ductile RC frame structure. The use of diagonal haunch element has been considered as a desirable seismic retrofit option for preventing brittle failure of the joint. Previous research has been focused on implementing double haunches, whilst the performance of using single haunch element as a less-invasive and more architecturally favourable retrofit option has not been investigated. Hence, the feasibility of using single haunch system for retrofitting RC beam-column joint is explored in this study. This paper presents the analytical development of the technique and illustrates its effectiveness by showing the changes in the shear demand at the joint.

}, keywords = {building, construction, earthquake, engineering, retrofitting, risk management}, author = {Zabihi, Alireza and Hing-Ho Tsang and Emad F Gad and John Wilson} } @conference {bnh-6008, title = {Retrofitting RC Beam-Column Joint in Australia using Single Diagonal Haunch}, booktitle = {Australian Earthquake Engineering Society 2016 Conference}, year = {2016}, month = {11/2016}, publisher = {Australian Earthquake Engineering Society}, organization = {Australian Earthquake Engineering Society}, address = {Melbourne}, abstract = {

Exterior beam-column joint is potentially the weakest link in a limited-ductile RC frame structure in Australia. The use of diagonal haunch element has been considered as a desirable seismic retrofit option for preventing brittle failure of the joint. Previous research globally has focused on implementing double haunches, whilst the performance of using single haunch element as a less-invasive and more architecturally favourable retrofit option has not been investigated. In this study, the feasibility of using a single haunch system for retrofitting RC beam-column joint in Australia is explored. This paper presents the key formulations of the technique and illustrates its effectiveness by showing analytically the changes in the shear demand at the joint.

}, keywords = {Exterior beam-column joint, limited-ductile, RC frame, seismic retrofitting, single haunch}, author = {Zabihi, Alireza and Hing-Ho Tsang and Emad F Gad and John Wilson} }