US Egypt Cooperative Research: Use of Cold-Formed Steel in Residential Housing

1103904该项目支持马里兰州巴尔的摩约翰霍普金斯大学的Benjamin Schafer博士和埃及开罗大学的Metwally Abu-Hamd博士开展的合作研究项目。他们计划研究冷弯形钢在住宅中的使用。近年来，社会开始重新评估我们的建筑环境，以实现更高的性能，具体地说，将自然灾害造成的损失降至最低，并寻求可持续的解决方案，以满足建筑环境的长期需求。到目前为止，低层建筑，特别是住宅，在世界上所占的比例最大？S建筑存量。在过去，文化规范在很大程度上推动了住宅所使用的材料和系统，今天的情况正在变化，存在着走向更科学的绩效基础的可能性。冷弯钢是一种因其高强度重量比、高回收含量、易于施工和公认的效率而可能显著增加使用的材料。本PIS将探索冷弯钢框架在美国和埃及的住宅中的使用，并寻求(A)开发新的非专有冷弯钢框架系统，有可能显著提高建筑的技术性能和功能，(B)提供一系列原型研究，从经济、环境和可持续发展方面探索不同的框架解决方案，包括新提出的冷弯形钢选项。建筑原型研究集中在埃及和美国的农村和城市地区。审查的框架解决方案包括：(A)埃及(混凝土)和美国(木材)的传统框架解决方案，以及(B)现有的使用商品形状的冷弯型钢重复框架，以及(C)本提案中开发的冷弯型钢框架的新系统，该系统采用新颖的优化截面形状和新的承重和抗侧向双重体系。这是通过开发一种新的冷弯型钢框架结构系统来实现的，并通过仔细的建筑原型研究来实现，这些研究特别权衡了工程性能和可持续性指标之间的平衡。总而言之，这项研究将为如何从全球范围内评估住宅中的新框架系统提供一个模板，并具体演示冷弯型钢框架的这种方法。美国PI是美国设计规范重大变化背后的推动力，这些规范使新的高效冷弯钢型材能够轻松设计，并在探索和提供冷弯钢架的新型解决方案方面具有独特的地位。埃及派(Abu-Hamd)在钢结构性能和钢结构施工管理方面拥有丰富的经验。为研究提供了详细的实施方案。所需资源在很大程度上利用了这两个机构已经在进行的工作。广泛的影响：社会学的更广泛影响主要集中在建立美国和埃及在冷弯型钢结构方面的新伙伴关系上。人员交流，深化经验，是有计划的。PI有很强的向学术界和产业界传播的记录，这两个渠道都将在本研究中使用。具体地说，面向行业的活动将包括美国规范和标准组织(AISI-COFS)以及建筑商和从业者年度会议(METALCON)。与建筑承包商的合作还应包括资助在埃及建造已开发设计的示范模型。这项研究的更大目标是创建满足工程性能和可持续发展目标的住宅，其效率比目前的解决方案高得多。与埃及的伙伴关系确保了对问题的全面探索，并确保新的解决方案将产生最大的全球利益。这一提议得到了美国-埃及联合基金计划的支持，其中NSF支持美方，埃及政府资助埃及方面。

1103904 This project supports a cooperative research project by Dr. Benjamin Schafer at Johns Hopkins University, Baltimore, Maryland and Dr. Metwally Abu-Hamd of Cairo University, Cairo, Egypt. They plan to study Use of Cold-Formed Steel in Residential Housing. In recent years society has begun to re-evaluate our built environment with the objective of achieving higher performance, specifically, to minimize loss attributed to natural hazards and to seek sustainable solutions for long-term needs in the built environment. Low-rise structures in general and residential housing in particular, represent by far the greatest percentage of the world?s building stock. In the past cultural norms largely drove the materials and systems employed for residential housing, today the situation is in flux and the potential to move towards a more scientific performance-basis exists. One material that may see significant increase in use due to its high strength-to-weight ratio, high recycled content, ease of construction, and proven efficiencies is cold-formed steel.This PIs will explores the use of cold-formed steel framing in residential housing in the U.S. and Egyptand seek to (a) develop new non-proprietary systems for cold-formed steel framing with the potentialto significantly increase building technical performance and function, and (b) provides a series ofarchetype studies that explore different framing solutions, including the newly proposed cold-formed steeloption, from economic, environmental, and sustainability aspects. The building archetypes studies focuson both rural and urban areas in Egypt and the U.S. The framing solutions examined include (a) traditional framing solutions in Egypt (concrete) and the United States (timber) along with (b) existing repetitive framing in cold-formed steel using commodity shapes and (c) the new system developed in this proposal for cold-formed steel framing that employs novel, optimized, cross-section shapes and a new dual system for load bearing and lateral resistance.Intellectual Merit: The research will advance significantly the application of cold-formed steel framing to residential housing. This is achieved through development of a new cold-formed steel framing structural system, and through careful building archetype studies that specifically weigh the balance between engineering performance and sustainability metrics. In total the research will provide a template for how to evaluate new framing systems in residential housing with a worldwide view, and specifically demonstrate this approach for cold-formed steel framing. The U.S. PI is the driving force behind significant changes in U.S. design specifications that enable new highly efficient cold-formed steel shapes to readily be designed and is uniquely positioned to explore and provide novel solutions for cold-formed steel framing. The Egyptian PI (Abu-Hamd) has a long experience in the performance of steel structures and construction management of steel structures. A detailed implementation plan is provided for the research. The resources required largely utilize the already active work at both institutions.Broader Impacts: The sociological broader impact is largely focused on the creation of a new U.S.-Egyptian partnership on cold-formed steel structures. Personnel exchanges to deepen the experience are planned for. The PI has a strong record of dissemination to academic and industry, both channels will be utilized in this research. Specifically, outreach to industry will include U.S. codes and standards organizations (AISI-COFS) as well as annual meetings of builders and practitioners (Metalcon). Cooperation with building contractors shall also include financing the building of demonstration models of the developed designs in Egypt. The larger goal of the research is to create residential housing that meets engineering performance and sustainability targets with much greater efficiency than current solutions. The partnership with Egypt insures that the full breadth of the problem is explored and that new solutions will have maximum global benefit.This proposal is supported under the US-Egypt Joint Fund Program where NSF supports the US side and the Government of Egypt funds the Egyptian side.