Browsing by Subject "Seismic performance, risk mitigation and resilience of new and existing structures"
Now showing items 1-20 of 53
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A Case for Resilience in New Zealand
(2024-04-09)The concepts of resilience and holistic building performance drive the seismic design approach for structures with national significance or special post-disaster functions. Although considerable advancements have been made ... -
A Review on Nonlinear Time History Analysis of Structures
(2024-04-09)Nonlinear time history analysis (NTHA) is a powerful approach for assessing the seismic response of buildings, enabling engineers to better understand and predict the structural behavior under dynamic loading. This review ... -
An energy dissipation and seismic reduction design of a hospital inpatient building using viscous fluid dampers
(2024-04-09)Viscous fluid damper is commonly used in China to reduce building seismic response. This paper introduces the design methodology and key-points of viscous fluid damper in China using an energy dissipation design of an ... -
Application of Low Damage Tension Braces in Top Extensions of Existing Buildings: A Case Study for Seismic Upgrade
(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) ... -
Assessing the Impact of Drilling Techniques on the Tensile Strength of Mechanical Screw Anchors in Masonry
(2024-04-09)Mechanical screw anchors are used for a range of structural connections on masonry buildings, including as part of earthquake retrofit solutions. While extensive research has been devoted to understanding the working ... -
Building collapse due to P-delta – what is the risk?
(2024-04-09)Second-order P-delta effects require consideration as part of the seismic design and assessment of buildings, as they can amplify lateral displacement demands and potentially cause collapse through dynamic instability. ... -
Code Based Design vs. Performance Based Design
(2024-04-09)Modern day design codes are the result of six decades of seismic engineering developments most of which have been focused on elastic modal methods. Modal methods are strictly not applicable to inelastic systems and hence ... -
Coordinating for Success - Enhancing Seismic Restraint Through Early Design Involvement
(2024-04-09)Tuhiraki is a new agricultural science facility for AgResearch Ltd., situated in Lincoln, Canterbury. The workplace and laboratory structures witnessed significant improvements in design efficiency and coordination of ... -
Damage Level Prediction of RC Building for Future Earthquakes Based on Seismic Response Observation
(2024-04-09)This paper proposes a method of damage evaluation of reinforced concrete buildings based on seismic response observed by sensors, and prediction of expected response by future earthquakes. Real performance curve and damping ... -
Earthquake Protection Technologies for Structural and Non-Structural Applications: Case Studies Worldwide
(2024-04-09)Seismic hazards pose significant risks to the built environment, demanding effective mitigation measures. In recent years, there has been a surge in seismic control technology development, highlighting its crucial role in ... -
Effective and economic combination of seismic isolation and vibration insulation within one innovative device
(2024-04-09)Seismic isolation is a well-known approach to reduce the risk of casualties as well as structural and content damage due to earthquakes. Vibration insulation on the other hand is increasingly a requirement in urban areas ... -
Enhancing Structural Resilience: Three-Dimensional Seismic Isolation (3DSI) in Practice
(2024-04-09)This research introduces a novel three-dimensional seismic isolator designed to evaluate the coupled horizontal-vertical responses of a five-story building. A comprehensive structural analysis using the OpenSees software ... -
Evaluating the Effect of Initial Gravity Forces in Buckling-Restrained Brace Frame Braces
(2024-04-09)It is common practice to design buckling-restrained braces (BRBs) for seismic forces only, and to neglect any initial gravity that occurs in them. This practice assumes that these gravity loads simply “shed” upon first ... -
Experimental and Analytical Study of Fillet Welds for Seismic Actions
(2024-04-09)New Zealand steel standards NZS3404 uses a simplified method to predict the weld design capacity and to size the weld. According to the industry feedback on the design and manufacturing of the seismic welded connections, ... -
Experimental Testing of Brittle RC frames Strengthened by RSFJ-toggle bracing system
(2024-04-09)This paper investigates the performance of the new retrofitting system, consisting of self-centering damper resilient slip friction joint (RSFJ)-toggle bracing system, as a global retrofitting method for deficient RC frame ... -
Exploring resiliency between different steel lateral systems for new construction
(2024-04-09)It is known that while base level, code compliant structural designs produce buildings with a low likelihood of collapse, there is little guarantee that buildings will remain functional following moderate to severe ... -
Finite Element Method Analysis of Reinforced Concrete Exterior Beam-Column Joint Structures Subjected to High Varying Axial Forces
(2024-04-09)Large variation of axial forces in columns in the lower stories of a high-rise reinforced concrete buildings during a severe earthquake can cause significant changes in the column-to-beam strength ratio in the exterior ... -
Finite Element Modelling (FEM) of the Asymmetric Friction Connection (AFC) with Belleville Springs (BeSs): challenges and ongoing developments
(2024-04-09)The Sliding Hinge Joint (SHJ) is a low-damage beam-column connection used in steel moment-resisting frames. It allows large beam-column rotation to occur with minimal damage, through sliding in asymmetric friction connections ... -
From Research to Practice: Case Study on Mixed Angle Screws Hold Down Connections for a 6-Storey CLT Shear Wall Building
(2024-04-09)Mass timber structures are a growing topic in the New Zealand design environment. To design mass timber buildings to the moderate or high seismic demands of much of New Zealand, strong stiff, and ductile seismic systems ... -
Highbank Power Station Redevelopment – Design Process for a Concrete Encased Turbine and Generator Plinth Replacement
(2024-04-09)Manawa Energy, a renewable energy provider in New Zealand, operates a network of 26 power schemes from the Bay of Plenty in the North to Otago in the South. The Highbank Power Station stands as one of Manawa’s highest ...