Investigation into optimization of support elements associated with tunnelling for civil infrastructure

与民用基础设施隧道施工相关的支撑元件优化研究

• 批准号: 402333-2011
• 负责人: Vlachopoulos, Nicholas
• 金额: $ 1.75万
• 依托单位: Royal Military College of Canada
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=529529
• 关键词: Investigation; into; optimization; support; elements

Canada has a vast underground infrastructure worth billions in terms of tunnelling works for access to natural resources, and civil infrastructure. Investment in Public Infrastructure has been declining as a percentage of Gross Dometic Product (GDP), hovering just below 1.5%. Population and economic growth are combining to increasingly overburden Canada's public infrastructure. All of these factors suggest that engineers are tasked to do more with less and must be forced to optimize their designs in order to provide sustainable, cost-effective solutions. Tunnelling through weak rock as part of civil infrastructure works (i.e. tunnelling roads, railways, intakes for power stations etc.) presents unique challenges to the engineer, as misjudgments in the design of support systems can lead to costly failures if under-designed or high tunnelling costs if over-designed. Currently, a true optimized and mechanics-based design process for the various tunnel support technologies is not fully developed. The objectives of this research are: 1. To optimize civil infrastructure tunnel support design; balancing safety & cost, 2. To advance the science of proper geomaterial characterization through fieldwork in order to obtain reliable strength estimates, 3. To isolate the behaviour, influence and effect of specific support elements within a multi-element, interactive tunnel support system, and, 4. To improve upon analytical and modelling tools for weak geomaterials and support systems. The novelty of this work lies in the fact that limited research to date has explored the temporary tunnel support system as a composite, interactive scheme in order to obtain a true optimization of the temporary support structure based on a composite, interactive support performance. This research will help support the quality and level of public infrastructure that Canada requires in order to keep pace with the demands of an ever-changing world; a world of competitive of increasing urbanization and infrstructure expansion. Modern, strong and innovative infrastructure is an essential building block for Canada's competitiveness and long-term prosperity for Canadians. This research (with national and international collaborations) will be of national significance and impact.

就可以使用自然资源和民用基础设施的隧道工作而言，加拿大拥有庞大的地下基础设施。对公共基础设施的投资一直在下降，占总污染物（GDP）的百分比，徘徊在1.5％以下。 人口和经济增长正在加拿大加拿大公共基础设施越来越多。所有这些因素都表明，工程师的任务是更少的事情，必须被迫优化其设计，以提供可持续的，具有成本效益的解决方案。作为民用基础设施工程的一部分（即隧道道路，铁路，电源站的进气口等），通过弱岩石进行隧道，对工程师带来了独特的挑战，因为在支持系统的设计设计中，如果过度设计过多或高隧道成本，则可能导致昂贵的失败。当前，各种隧道支持技术的真正优化和基于机械的设计过程尚未完全开发。这项研究的目标是：1。优化民用基础设施隧道支持设计；平衡安全与成本，2。通过现场工作提高适当的地貌表征的科学，以获得可靠的强度估计，3。隔离多元素，交互式隧道支持系统中特定支持元素的行为，影响和影响，以及4。改善弱地形物质和支持系统的分析和建模工具。这项工作的新颖性在于，迄今为止有限的研究探索了临时隧道支持系统，作为一种复合，交互式方案，以获得基于复合互动，交互式支持性能的临时支持结构的真实优化。这项研究将有助于支持加拿大所需的公共基础设施的质量和水平，以跟上不断变化的世界的需求；一个增加城市化和基础结构扩展的竞争世界。 现代，强大和创新的基础设施是加拿大竞争力和长期繁荣的重要组成部分。这项研究（与国家和国际合作）将具有国家意义和影响。