Stringer-panel model to support the seismic design and response verification of building diaphragms

被引：3

作者：

Godínez S.E. ^{[1
]}

Restrepo J.I. ^{[2
]}

机构：

[1] University of California, San Diego, Matthews Lane, SME building, 4th floor, suite 443C, San Diego, 92161, CA

[2] University of California, San Diego, Matthews Lane, SME building, 4th floor, suite 444H, San Diego, 92161, CA

来源：

Resilient Cities and Structures | 2023年 / 2卷 / 01期

关键词：

Diaphragms; Reinforced concrete; Seismic design; Stringer-panel; Transfer diaphragms;

D O I：

10.1016/j.rcns.2023.02.003

中图分类号：

学科分类号：

摘要：

Diaphragms are essential structural elements of the earthquake-resisting system in a building. Diaphragms are the building slabs subjected to in-plane forces which are transferred to the vertical elements of the earthquake-resisting system. In-plane forces can arise from inertial loads and from self-equilibrating forces caused by the interaction between elements of the vertical earthquake-resisting system of different stiffness. The analysis and design of diaphragms is one of the most challenging tasks in design of buildings nowadays. This paper describes a stringer-panel model used as a macro-element for the modeling of building diaphragms in linear and nonlinear time-history analyses. The element was coded in the open-source finite element software OpenSees. The linear version of the element is first used to support the design of diaphragms in a building. Then, the nonlinear response of the diaphragms is assessed with the nonlinear version of the element. Key response parameters of diaphragms modeled with the dynamic stringer-panel method in a high-rise building of complex geometry are presented. Results show significant redistribution of internal forces occurs through the diaphragm after cracking, leading to a general reduction of the tensile forces and an increase in the compressive forces. The clear load path, computational stability, efficiency, and highly design-oriented representation of the results of this method make it an attractive alternative for its use in the modeling and design of diaphragms in performance-based seismic design. © 2023 The Author(s)

引用

页码：46 / 67

页数：21

共 67 条

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