CAREER: Understanding and Quantifying System-level Seismic Performance for the Design of Reinforced Concrete Structures with Highly Ductile Concrete Materials

职业：理解和量化高延性混凝土材料钢筋混凝土结构设计的系统级抗震性能

基本信息

批准号：
2141955
负责人：
Matthew Bandelt
金额：
$ 56万
依托单位：
New Jersey Institute of Technology
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2022
资助国家：
美国
起止时间：
2022-08-01 至 2027-07-31
项目状态：
未结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2141955&HistoricalAwards=false
关键词：
CAREER Understanding Quantifying System level

项目摘要

This Faculty Early Career Development (CAREER) award will support research on the seismic behavior and design of reinforced concrete structural systems using highly ductile concrete materials known as high-performance fiber-reinforced cementitious composites (HPFRCCs). Engineers have made rapid advances in the development of concrete materials with enhanced mechanical properties and cracking resistance. Proof-of-concept studies have shown that HPFRCCs drastically improve the seismic response of individual building components. In order to promote transformational change and progress the science of structural design for natural hazards, this project will focus on understanding how HPFRCCs can be engineered for the use in entire building systems to improve seismic performance. By creating a new understanding of how structural systems behave with HPFRCCs, engineers will be able to design more resilient structures that enhance the public’s safety, prosperity, and welfare. The project will integrate physical experimentation, computational modeling, and risk assessment to create new methods to evaluate and design reinforced concrete structures. Curricula will be developed on the applications of novel construction materials. Outreach activities will promote interest in STEM among female middle school students across socioeconomic backgrounds and engage high school students within Newark, New Jersey to study cost-benefit scenarios related to the use of new infrastructure materials. This award will contribute to the National Science Foundation (NSF) role in the National Earthquake Hazards Reduction Program (NEHRP).The goal of this project is to understand and quantify seismic performance of structural systems using highly ductile concrete materials. The research program will lead to a new understanding of designing buildings with HPFRCCs, and quantify their impact on performance, life safety, and life-cycle costs. In order to achieve these outcomes, the research integrates the following objectives: (1) quantify the plastic hinge response of HPFRCC components under the combined effects of axial loading and bending through a targeted set of physical experiments and detailed computational simulations; (2) create computationally efficient models that account for the unique response and failure characteristics of HPFRCC components for use in system-level seismic analysis and design; (3) develop seismic design criteria, perform risk assessment, and analyze cost-benefit scenarios for HPFRCC systems; and (4) integrate educational and outreach programs to create research and learning opportunities for students across age, gender, and socioeconomic backgrounds. The project will advance the science of highly ductile concretes in natural hazard applications and provide the foundation for a career in leadership in research, education, and outreach in the use of novel construction materials in structural systems. Experimental results will be accessible through the NSF-supported Natural Hazards Engineering Research Infrastructure (NHERI) Data Depot (https://www.DesignSafe-ci.org), and models will be integrated with resources from the NHERI Computational Modeling and Simulation Center.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该教师早期职业发展（职业）奖将支持对高度延展的混凝土混凝土结构系统的地震行为和设计的研究，称为高性能纤维增强的水泥成分（HPFRCC）。工程师在具有增强的机械性能和开裂性的混凝土材料的开发方面取得了迅速的进步。概念验证研究表明，HPFRCCS大大改善了单个建筑物组件的地震反应。为了促进变革性变革和进步，自然灾害的结构设计科学，该项目将重点介绍如何在整个建筑系统中使用HPFRCCS来设计HPFRCC，以改善地震性能。通过对结构系统与HPFRCC的行为有了新的了解，工程师将能够设计出更具弹性的结构，从而增强公众的安全，繁荣和福利。该项目将整合物理实验，计算建模和风险评估，以创建新的方法来评估和设计增强的混凝土结构。课程将在新型建筑材料的应用上开发。外展活动将在社会经济背景跨女性中学生中促进对STEM的兴趣，并与新泽西州纽瓦克市的高中学生互动，以研究与使用新基础设施材料有关的成本效益方案。该奖项将促进国家科学基金会（NSF）在国家地震危害计划（NEHRP）中的作用。该项目的目的是使用高凝聚力混凝土材料来理解和量化结构系统的地震性能。该研究计划将通过HPFRCC对设计建筑有新的了解，并量化其对绩效，生命安全和生命周期成本的影响。为了实现这些结果，研究整合了以下对象：（1）通过针对目标的物理实验和详细的计算模拟，量化了HPFRCC组件在轴向负载和弯曲的综合效果下的塑料铰链响应；（2）创建计算高效的模型，以说明用于系统级地震分析和设计中HPFRCC组件的唯一响应和故障特性；（3）制定地震设计标准，进行风险评估并分析HPFRCC系统的成本效益方案；（4）综合教育和外展计划，为各个年龄，性别和社会经济背景的学生创造研究和学习机会。该项目将在自然危害应用中推进高度延展的浓缩物的科学，并为在结构系统中使用新型建筑材料的研究，教育和外展领导职业奠定了基础。实验结果将通过NSF支撑的自然危害工程研究基础设施（NHERI）数据仓库（https://www.designsignsafe-ci.org）均可获得，并将与NHERI计算模型中的资源整合，并通过nheri Computitation-Merit进行了nheri Computitional Merit。更广泛的影响审查标准。