NEESR: Seismically Isolated Unibody Residential Buildings for Enhanced Life-Cycle Performance

该奖项的研究目标是探索、模拟和验证轻型框架住宅建筑的新抗震设计概念，这些概念将在对建筑成本影响最小的情况下显著提高其生命周期抗震性能。新的强度和刚度增强的整体框架体系和低成本的隔震体系将被研究，以实现具有成本效益的抗震。与传统的抗震设计实践不同，在传统的抗震设计实践中，大量的结构延性需求可能会对建筑和机械建筑系统造成广泛的破坏，所考虑的系统将通过将结构和建筑构件集成到一个具有高强度和刚度的横向系统中来实现减少变形和破坏。将实施高保真仿真模型，以准确评估抗震性能，包括隔震模型和一体化空间框架体系。物理和计算模拟将为新的轻型框架住宅建筑抗震设计标准提供基础，以满足适当的倒塌安全目标，并纳入生命周期概念以控制建筑功能的破坏和损失。这项研究围绕着结构紧固件、组件和系统的准静态测试、振动台测试和计算模拟的综合计划进行组织。来自斯坦福大学和加州州立大学萨克拉门托的研究小组将使用小乔治·E·布朗。加州大学伯克利分校和加州大学圣地亚哥分校的地震工程模拟网络(NEES)设施。该项目的数据将被存档，并通过位于http://www.nees.org.的NEES项目仓库数据库向公众提供就像上世纪70年代的S时代，汽车建造从“车身框架”发展到“整体”建筑一样，这项研究有望通过将结构和建筑构件整合到一个整体建筑体系中，帮助变革轻框架住宅建筑。当与抗震基础隔震相结合时，由此产生的集成系统将大大减少地震造成的破坏和修复。建筑业主、社区和其他利益相关者将受益于通过优化设计方法和集成建筑系统实现的经济。通过减少地震破坏，新的框架系统有可能显著提高社区的抗震力，使居民能够在原地避难，并从大地震中迅速恢复。该项目具有自然的教育成分，通过研究生和本科生的研究参与，并通过一个咨询小组促进行业的大力参与，以促进技术转让到建筑规范和专业实践。该奖项是国家减少地震灾害计划(NEHRP)的一部分。

The research objective of this award is to explore, simulate, and validate new seismic design concepts for light-frame residential construction that will dramatically improve its life-cycle seismic performance with minimal impact on construction costs. New strength and stiffness enhanced unibody framing systems and low-cost seismic isolation systems will be investigated to achieve cost-efficient resistance to earthquakes. In contrast to conventional seismic design practice, where large structural ductility demands can result in extensive damage to architectural and mechanical building systems, the considered systems will achieve reduced deformations and damage by integrating structural and architectural building components in a lateral system with high strength and stiffness. High-fidelity simulation models will be implemented to accurately assess the seismic performance, including models for seismic isolation and the unibody space-frame systems. Physical and computational simulations will provide the basis for new seismic design criteria for light-frame residential construction to meet appropriate collapse safety goals and incorporate life-cycle concepts to control damage and loss of building function. The research is organized around an integrated plan of quasi-static testing, shake table testing, and computational simulations of structural fasteners, subassemblies, and systems. The research team from Stanford University and California State University, Sacramento, will use the George E. Brown, Jr. Network for Earthquake Engineering Simulation (NEES) facilities at the University of California, Berkeley, and the University of California, San Diego. Data from this project will be archived and made available to the public through the NEES Project Warehouse data repository at http://www.nees.org. Much in the same way that automotive construction advanced from "body-on-frame" to "unibody" construction in the 1970's, this research has the promise to help revolutionize light-frame residential construction by integrating structural and architectural components into a unibody building system. When combined with seismic base isolation, the resulting integrated system will substantially reduce the damage and repairs due to earthquakes. Building owners, communities, and other stakeholders will benefit by the economies achieved through optimized design approaches and integrated building systems. By reducing earthquake damage, the new framing systems have the potential to dramatically improve the resilience of communities by allowing residents to "shelter-in-place" and quickly recover from large earthquakes. The project has a natural educational component through the research participation of graduate and undergraduate students and strong participation of industry through an advisory group to promote technology transfer to building codes and professional practice. This award is part of the National Earthquake Hazards Reduction Program (NEHRP).