Browsing New Zealand Society for Earthquake Engineering by Author "bd95e2aa-f52b-4c06-8c4c-e5b336727dab"
Now showing items 1-19 of 19
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A comparison of New Zealand seismic code requirements with other major design codes in the implementation of seismic resilient devices
Varier, Sriraj; Agarwal, Setu; Hashemi, Ashkan; Quenneville, Pierre; Zarnani, Pouyan (2021-04-14)In the ever-evolving earthquake engineering field, the need of the hour is to achieve earthquake-resistant buildings which have immediate occupancy following an earthquake. This implies that the demand for resilient dampers ... -
Application of Low Damage Tension Braces in Top Extensions of Existing Buildings: A Case Study for Seismic Upgrade
Hashemi, Ashkan; Sayadi, Ali; Prionas, Ioannis; Zarnani, Pouyan; Quenenville, Pierre (2024-04-09)Tension-only braces are generally used as diagonal cross members (rods, flat bars or similar) to resist lateral loads. The application of these braces has been limited to low-rise buildings (generally up to two stories) ... -
Application of resilient rocking cores in low damage mass timber structures: A case study
Hashemi, Ashkan; Mpidi Bita, Hercend; Zarnani, Pouyan; Malczyk, Robert; Quenneville, Pierre; Varier, Sriraj (2022-04-27)The application of mass timber structures made with massive wooden panels such as Cross Laminated Timber (CLT) has significantly increased in the last few years owing to their many architectural and structural advantages, ... -
Case studies on low damage mass timber structures with resilient connections
Hashemi, Ashkan; Fast, Tobias; Fast, Paul; Dickof, Carla; Jackson, Robert; Dunbar, Andrew; Zarnani, Pouyan; Quenneville, Pierre (2021-04-14)There is increasing public pressure to have seismic-resistant structures made with massive wooden panels such as Cross Laminated Timber (CLT). It is well-known that the type and behaviour of the connections govern the ... -
Design of RSFJ Self-centring Brace for Ultimate Limit State
Yousef-Beik, Seyed Mohammad Mehdi; Varier, Sriraj; Hashemi, Ashkan; Zarnani, Pouyan; Quenneville, Pierre (2021-04-14)In previous studies, it was shown that the RSFJ brace assembly is prone to elastic buckling for which a new mechanism composed of two telescopic sections was introduced as a remedy to increase the elastic buckling load, ... -
Ductile timber connections: Understanding the factors contributing to their ductility
Quenneville, Pierre; Hashemi, Ashkan; Zarnani, Pouyan (2022-04-27)It is well accepted that ductility in a timber structure is achieved through its conections as the behaviour of timber is inherently brittle. It is thus important to understand the diferent parameters that contribute to ... -
Earthquake Protection of Residential Buildings: New Resilient System for Light Timber Framing
Zarnani, Pouyan; Chan, Nicholas; Hashemi, Ashkan; Quenneville, Pierre (2023-04-19)In NZ, similar to other countries, residential houses are mostly constructed using light timber framing. The common seismic solutions available in the market for such low-rise buildings are based on yielding of sacrificial ... -
Effect of serviceability and over-strength mechanism on seismic response of low damage structures
Hashemi, Ashkan (2023-04-19)Low-damage structural systems are designed in a way the earthquake damage is controlled and localised in pre-designated locations and components (e.g. fuses). These components are normally replaced, repaired or designed ... -
Effect of uncertainties in collapse assessment of coupled CLT walls with energy dissipators as couplers and resilient hold-downs
Agarwal, Setu Raman; Hashemi, Ashkan; Quenneville, Pierre (2023-04-19)Rocking coupled CLT walls with energy dissipaters as couplers provide increased stiffness and damping, enabling the design realisation of taller CLT structures. Researchers have proposed design methods and conducted ... -
Experimental and analytical evaluation of different failure modes of self-centring braces
Yousef-Beik, Seyed Mohammad Mehdi; Hashemi, Ashkan; Zarnani, Pouyan; Quenneville, Pierre; Seifi, Mehrdad; Veismoradi, Sajad (2022-04-27)As resilience of structures during seismic events is currently a main structural engineering topic, Low-damage self-centring braces have the potential to serve this purpose by becoming a common low-damage lateral load ... -
Feasibility of capacity spectrum method for analysis of low damage structural systems with friction connections
Hashemi, Ashkan; Assadi, Soheil; Agarwal, Setu; Quenenville, Pierre (2023-04-19)The use of friction connections for low damage design of new structures has been increasing over the past few years. These connectors have a high energy dissipation ratio and are relatively economical to fabricate and ... -
Full-scale shaking table testing of a low-damage steel structure using Resilient Slip Friction Joint
Bagheri, Hamed; Hashemi, Ashkan; Zarnani, Pouyan; Quenneville, Pierre; Yan, Zhenduo; Clifton, G. Charles; MacRae, Gregory Anthony (2020-04-22)The objective of this study is to give an overview of the design and numerical analyses related to a full-scale steel structure shaking table test that includes some structural applications of Resilient Slip Friction Joint ... -
High capacity glued-in rod connections in Cross-Laminated Timber (CLT) structures
Shirmohammadli, Youness; Hashemi, Ashkan; Masoudnia, Reza; Quenneville, Pierre (2023-04-19)Glued-in rods are efficient and high-capacity connections for achieving high-strength connections in new timber structures and reinforcing existing timber buildings. With the emergence of cross-laminated timber (CLT) and ... -
Impacts of ground motion and scaling method selection on the performance of rocking wall systems with friction connections
Assadi, Soheil; Chan, Nicholas; Hashemi, Ashkan; Quenneville, Pierre (2024-04-09)Dynamic time-history analysis has long been regarded as an acceptable and reliable method for seismic design of structures not covered by codal guidelines and often referred to as "alternative" design. Resilient rocking ... -
Lincoln University Waimarie building: An application of friction damping devices with recentring for low damage design
Hashemi, Ashkan; Wallington, Chris; Govind, Samir; Whittaker, David; Quenneville, Pierre (2023-04-19)The experience from Christchurch and Kaikoura seismic events demonstrated well that the ‘life safety’ criteria is not sufficient to protect the community from earthquake impact. Currently, the community expects more measures ... -
Low Damage Wall To Floor Connections For Seismic Resilient Timber Structures
Assadi, Soheil; Hashemi, Ashkan; Quenneville, Pierre (2023-04-19)Rocking timber walls provide superior seismic performance in comparison with conventional light timber structures. Nevertheless, there is an uplift movement at the base of the wall that is translated as vertical displacement ... -
Seismic Performance of Prefabricated Modular Mass Timber Structures with Inter-Story Isolation.
Lal, Rajnil; Hashemi, Ashkan; Quenneville, Pierre (2024-04-09)Prefabricated Modular Mass Timber (MMT) construction provides an alternative to traditional on-site light timber construction. MMT buildings comprise of prefabricated volumetric modules assembled on-site to form a larger, ... -
Seismic upgrading of friction-damped steel frames integrated with self-centring devices
Hashemi, Ashkan; Bagheri, Hamed; Zarnani, Pouyan; Quenneville, Pierre (2021-04-14)Conventional friction-based damping devices are known for their large energy dissipation capacity and economic benefits compared to other seismic mitigation systems. These devices have been implemented in many practical ... -
Shake-Table Testing of the Resilient Slip Friction Joints
Assadi, Soheil; Bagheri, Hamed; Yan, Zhenduo; Zarnani, Pouyan; Hashemi, Ashkan; MacCrae, Greg; Clifton, Charles; Jia, Liang-Jiu; Quenneville, Pierre (2024-04-09)A consortium of university researchers (UoA, AUT and UC) from New Zealand and Tongji University have undertaken shake-table tests of various friction damping devices. This testing program is under the banner of the ROBUST ...