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ATC Webinar: Future Code Changes Explained—Seismic Analysis and Design of Nonstructural Components and Systems ❗️ Understand key changes in ASCE/SEI 7-22, including: ✅ The new seismic design force equation ✅ How equipment support structures and platforms are handled ✅ How distribution system supports are handled ❗️در این وبینار فوق‌العاده با آخرین ضوابط استاندارد ASCE7-22 در موضوع مهم طراحی لرزه‌ای اجزای غیرسازه‌ای آشنا شوید ... منبع مشاهده دانلود فایلهای مورد نیاز وبینار

Selecting and Scaling Earthquake Ground Motions for Performing Response-History Analyses Published: November 15, 2011 Author(s) Andrew Whittaker, Gail Atkinson, Jack Baker, Jonathan Bray, Damian Grant, Ronald Hamburger, Curt Haselton, Paul Somerville Abstract The primary objective of this task was to develop guidance for selecting, generating, and scaling earthquake ground motions for effective use in performing response history analyses for use in performance-based seismic engineering. The need for such guidance was identified in the ATC-57 report, The Missing Piece: Improving Seismic Design and Construction Practices (ATC, 2003), which defines a roadmap for the NIST problem-focused research and development program in earthquake engineering. Following a thorough study of the state of the practice with regard to selecting and scaling ground motions for nonlinear response-history analysis of buildings, the project team developed a list of key challenges facing design professionals tasked with selecting and scaling earthquake ground motions. Based on the findings identified, and considering the potential for impacting design practice in the near-term, the following topics were chosen for study: (1) selection of ground motions based on the Conditional Spectrum; (2) response-spectrum matching; and (3) near-fault ground motions and fault-rupture directivity. To encourage consensus and consistency in the state of the practice going forward, recommendations related to selecting and scaling ground motions for design and performance assessment of low- and medium-rise buildings, and a discussion on best practices for applying the current rules in building codes and standards, are provided. Citation: Grant/Contract Reports (NISTGCR) - 11-917-15 Report Number: 11-917-15 NIST Pub Series: Grant/Contract Reports (NISTGCR) Pub Type: NIST Pubs گزارش بسیار ارزشمند و کامل NIST در زمینه انتخاب رکورد و مقیاس سازی رکوردها برای انجام تحلیلهای غیرخطی و طراحی لرزه ای بر اساس عملکرد Download Paper Local Download Keywords NEHRP Consultants Joint Venture, ATC, Ground Motions, Spectrum Matching, Conditional Spectrum منبع record selection_@sharifstructure.pdf

Soil-Structure Interaction for Building Structures Published: September 13, 2012 Author(s) Jonathan Stewart, C.B. Crouse, Tara C. Hutchinson, Bret Lizundia, Farzad Naeim, Farhang Ostadan Abstract The purpose of this project was to develop consensus guidance for implementing soil-structure interaction in response history analyses, and to identify areas of further research that were needed. The starting point for this work was decades of available soil-structure interaction research, and recently published engineering guidance for static analysis procedures. Soil-structure interaction (SSI) analysis evaluates the collective response of three linked systems: the structure, the foundation, and the soil underlying and surrounding the foundation. Problems associated with practical application of SSI for building structures are rooted in a poor understanding of fundamental SSI principles. Implementation in practice is hindered by a literature that is difficult to understand, and codes and standards that contain limited guidance. This report represents an advancement in the state of SSI knowledge for practicing engineers. It provides a synthesis of the body of SSI literature, distilled into a concise narrative, and harmonized under a consistent set of variables and units. Techniques are described by which SSI phenomena can be simulated in engineering practice, and specific recommendations for modeling seismic soil-structure interaction effects on building structures are provided. The resulting recommendations are illustrated and tested, in detail, on realistic example buildings. Citation: Grant/Contract Reports (NISTGCR) - 12-917-21 Report Number: 12-917-21 NIST Pub Series: Grant/Contract Reports (NISTGCR) Pub Type: NIST Pubs گزارش بسیار ارزشمند و کامل NIST در زمینه روند مدسازی کاربردی اثرات اندرکنش خاک و سازه Download Paper Local Download Keywords NEHRP Consultants Joint Venture, ATC, Soil-Foundation-Structure Interaction, SSI, SFSI SSI_@sharifstructure.pdf

NEHRP Seismic Design Technical Brief No. 2 - Seismic Design of Steel Special Moment Frames: A Guide for Practicing Engineers Published: June 15, 2009 Author(s) Ronald Hamburger, Helmut Krawinkler, James Malley, Scott Adan Citation: Grant/Contract Reports (NISTGCR) - 09-917-3 Report Number: 09-917-3 NIST Pub Series: Grant/Contract Reports (NISTGCR) Pub Type: NIST Pubs گزارش بسیار ارزشمند و کامل NIST در زمینه طراحی لرزه ای قاب خمشی فولادی ویژه Download Paper Local Download Keywords NEHRP Consultants Joint Venture, ATC, Techbrief منبع SMF STEEL_@sharifstructure.pdf

NEHRP Seismic Design Technical Brief No. 7 - Seismic Design of Reinforced Concrete Mat Foundations: A Guide for Practicing Engineers Published: August 15, 2012 Author(s) Ron Klemencic, Ian McFarlane, Neil Hawkins, Sissy Nikolaou Citation: Grant/Contract Reports (NISTGCR) - 12-917-22 Report Number: 12-917-22 NIST Pub Series: Grant/Contract Reports (NISTGCR) Pub Type: NIST Pubs گزارش بسیار ارزشمند و کامل NIST در زمینه طراحی لرزه ای پی گسترده ساختمانها Download Paper Local Download Keywords NEHRP Consultants Joint Venture, ATC, Techbrief منبع seismic foundation_@sharifstructure.pdf

NEHRP Seismic Design Technical Brief No. 8 - Seismic Design of Steel Special Concentrically Braced Frame Systems: A Guide for Practicing Engineers Published: July 15, 2013 Author(s) Rafael Sabelli, Charles Roeder, Jerome Hajjar Citation: Grant/Contract Reports (NISTGCR) - 13-917-24 Report Number: 13-917-24 NIST Pub Series: Grant/Contract Reports (NISTGCR) Pub Type: NIST Pubs گزارش بسیار ارزشمند و کامل NIST در زمینه طراحی لرزه ای مهاربندهای همگرای ویژه Download Paper Local Download Keywords NEHRP Consultants Joint Venture, ATC, Techbrief SCBF_@sharifstructure.pdf

Nonlinear Analysis Research and Development Program for Performance-Based Seismic Engineering Published: December 16, 2013 Author(s) Gregory Deierlein, Peter Behnam, Finley Charney, Laura Lowes, Jonathan Stewart, Michael Willford گزارش بسیار ارزشمند و کامل NIST در زمینه مدلسازی و تحلیل غیرخطی برای مقاصد طراحی لرزه ای بر اساس عملکرد Abstract This work is an extension of NIST GCR 09-917-2, Research Required to Support Full Implementation of Performance-Based Seismic Design, in which several research topics were identified as high-priority in terms of fostering full development and implementation of performance-based seismic engineering. These included: (1) improvement in analytical modeling and demand assessment capabilities for buildings in near-collapse seismic loading; and (2) clarification and coordination in the translation of test results to currently used performance levels. This project intends to advance the practice of nonlinear dynamic analysis so that it can be used more widely and with more confidence, enabling widespread adoption of performance-based seismic engineering. This entails addressing the gap between state-of-the-art academic research and state-of-the-practice engineering applications of nonlinear analysis, structural modeling, and computer simulation. It also entails improving state-of-the-art techniques to more reliably capture the full range of structural response than is currently possible with methods that are in use today. Taken as a whole, the program presents a suite of initiatives that, if implemented, would improve nonlinear dynamic analysis capabilities, and identify procedures that are suitable and attractive to practitioners, while maintaining levels of accuracy commensurate with research models. Citation: Grant/Contract Reports (NISTGCR) - 14-917-27 Report Number: 14-917-27 NIST Pub Series: Grant/Contract Reports (NISTGCR) Pub Type: NIST Pubs Download Paper Local Download Keywords NEHRP Consultants Joint Venture, ATC, Program Plan, Research Needs منبع Nonlinear_@sharifstructure.pdf