Controlled rocking steel systems: from concept to design

受控摇摆钢系统：从概念到设计

• 批准号: RGPIN-2014-04409
• 负责人: Wiebe, Lydell
• 金额: $ 1.75万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=611019
• 关键词: Controlled; rocking; steel; systems; concept

The public generally assumes that new buildings are “earthquake-proof,” meaning that they could be used after an earthquake without repair. However, current design codes attempt only to ensure that a building can be safely evacuated after an earthquake. Therefore, code-compliant structures are likely to be damaged by design-level earthquakes, even if they behave exactly as intended. This was recently demonstrated in Christchurch, New Zealand, where a series of earthquakes in 2010-2011 has led to the demolition of 70% of the buildings in the central business district. In 2013, a report commissioned by the Insurance Bureau of Canada warned of $75 billion in losses due to the kind of earthquake that is expected to occur off the west coast. The extreme socio-economic cost of such disasters calls into question the wisdom of a design philosophy that accepts damage. However, this philosophy is unlikely to change unless systems with better performance can be built without greatly increasing the initial construction cost. This research program will greatly improve the resilience and sustainability of built infrastructure, which is at the core of the Canadian economy, by developing economical systems that can withstand earthquakes without structural damage. One particular system that shows promise for improving seismic resilience at a competitive initial cost is a Controlled Rocking Steel System. Although significant progress has been made on understanding this system, several key questions prevent it from being implemented widely. Over the next 5 years, this research program will answer the most pressing questions that prevent Controlled Rocking Steel Systems from moving from concept to design. As these questions are answered, a Canadian design guideline will be developed, and over the next 5-10 years, this is expected to lead to Controlled Rocking Steel Systems being specified as an acceptable seismic force resisting system in the National Building Code of Canada (NBCC), with appropriate provisions in Section 27 of the Canadian Steel Standard CSA S16. The long-term objective of this research program is to make damage avoidance a routine part of seismic design for all structures in Canada, rather than being a special design objective that is reserved for exceptional structures.

公众普遍认为建筑物是：“这意味着他们可以没有拖船。当前的设计代码只能在地上地震后才能安全撤离建筑物。兼容的结构应受到设计级别的损害。 ，整个2010年至2011年的地震导致了2013年中央商务区70％的建筑物。向西海岸曝光的地震。最初的约束成本。 一个特殊的系统，即提高了H有意义的地震弹性，这是对该系统的欣赏，该研究计划将为控制从概念到设计，将开发加拿大设计指南，最有效的摇摆钢系统。在接下来的5-10年中，预计在加拿大CASA S16的第27节中，在加拿大国家建筑法规（NBCC）opriate条款中，这将是可接受的摇摆钢系统 - 该研究计划的期限是为了避免损害成为加拿大所有结构的地震设计的常规部分。