Browsing Proceedings of the 2021 New Zealand Society for Earthquake Engineering Annual Technical Conference by Title
Now showing items 1-20 of 115
-
1170.5 Reimagined: from a structural designers view
(2021-04-14)Our loadings code has adapted and extended to incorporate new knowledge as it has emerged over the last 50+ years: could a re-write encourage engineers to design better buildings? This paper outlines some intentionally ... -
A comparison of New Zealand seismic code requirements with other major design codes in the implementation of seismic resilient devices
(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 ... -
A holisic methodology for assessing post-earthquake hospital functionality
(2021-04-14)Hospitals play a critical role in ensuring community safety. Hospitals must remain operational during and after an earthquake. However, physical damage, utility outages, or supply shortages can cause closures and/or ... -
A Typical Commercial Low Rise Structure - Case Study
(2021-04-14)The Case study building was designed and built in 2003. The building is a single storey rectangular shaped 25m x 21m steel portal frame structure with precast concrete panels. The building is typical of a modern commercial ... -
Adequacy and Retro-Fitting of Timber Frame House Foundations on Slopes
(2021-04-14)Previous studies have indicated that there are significant issues with the structural strength and stability of many existing house foundations on sloping sites. This was confirmed after the Christchurch earthquakes, where ... -
Advances in Floor Diaphragm In-Plane Modelling Using Truss Elements
(2021-04-14)Different methods to model building floor diaphragm in-plane stiffness with truss elements are compared to identify the method most suitable for analysis in design. The methods considered include (i) Elastic truss, (ii) ... -
An attempt to determine a relationship between a mass-spring-friction damper single-degree-of-freedom system’s equivalent viscous damping ratio and its corresponding friction coefficient
(2021-04-14)Damping forces are always present in real structures, occurring in several different forms, making them challenging to model expressly. Damping is often assumed to be viscous in nature, due to the simplicity of the ... -
An automation approach to the seismic assessment and strengthening of unreinforced masonry buildings
(2021-04-14)Large scale seismic assessments in areas of dense unreinforced masonry buildings (URM) is a significant challenge for structural engineers. URM buildings respond to earthquake excitation with a variety of mechanisms as ... -
Application of the Geotechnical Step-Change Provisions of the 2017 MBIE Guidelines for the Seismic Assessment of Buildings
(2021-04-14)The Seismic Assessment of Existing Buildings, Technical Guidelines for Engineering Assessments (“the Guidelines”) provides engineers with a consistent means to assess the seismic behaviour of existing buildings with respect ... -
Are stronger, stiffer buildings indeed costlier?: Case study of RC frame buildings
(2021-04-14)Seismic codes/standards allow buildings to be designed for different lateral strength as long as the associated ductility and drift demands are catered for. The design seismic force is primarily controlled by a force ... -
Assessment of boundary conditions for 2D geotechnical site-response analysis with soil heterogeneity
(2021-04-14)This paper examines various boundary condition assumptions for modelling 2D geotechnical site response, which requires a more sophisticated treatment of the boundary and loading conditions than what is typically required ... -
ATC-145: Influence of prior shaking on earthquake response and repair requirements for structures and elements
(2021-04-14)ATC-145 is a FEMA funded project aimed at developing a Guide for repair of earthquake damaged buildings to achieve future resilience. Thanks in part to EQC funding, the project includes substantial New Zealand representation. To ... -
Balancing seismic resilience and lean design to reduce the embodied carbon of buildings
(2021-04-14)The building and construction sector needs to make big changes to reduce greenhouse gas emissions if New Zealand is going to meet the legally binding targets of the 2019 Zero Carbon Act, and its commitments under the Paris ... -
Base isolation: the good, the bad and the ugly
(2021-04-14)In the light of the recent Christchurch and Kaikoura earthquakes and the life safety and economic uncertainties they pose, the need for “low damage design” has become more important. In theory a “low damage design” should ... -
Blenheim gravel liquefaction assessment using the Chinese dynamic cone penetration test
(2021-04-14)Worldwide, one of the issues that has been constantly brought to attention by engineers is the lack of guidance for geotechnical characterization and liquefaction assessment of gravelly soils. In gravelly soils, the ... -
Case studies on low damage mass timber structures with resilient connections
(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 ... -
CentrePort Wellington: Resilient regeneration activity
(2021-04-14)Wellington’s Pipitea port precinct - a critical lifeline and economic contributor to Wellington and surrounding regions – suffered significant damage and associated operational disruption as a result of the 2016 Kaikoura ... -
Cyclic behaviour of hold-downs using mixed angle self-tapping screws in Douglas-fir CLT
(2021-04-14)Long self-tapping screws are now commonly used in mass timber construction in New Zealand and globally due to their high strength and ease of installation on site. Under axial loads, self-tapping screws are strong and stiff ... -
Damageability of Hollow-core Floors
(2021-04-14)The life safety risk of precast hollow-core floors during earthquakes have been well recognised in New Zealand since early 2000s. Hollow-core floor unts in ductile buildings may experience web cracking at drift demands ... -
Design of the Ashburton District Council Civic Centre: A steel designers' learnings from an engineered timber building design
(2021-04-14)This paper discusses the learnings from the structural engineering for the Ashburton District Council (ADC) Civic Centre. The building was initially steel but after consulting with the Ashburton community an alternative ...