建筑常见不规则设计指南基于IBC 2015和ASCE SEI 7-10 Guide to the Design of Common Irregularities in Buildings 2015

VIP免费

那山那人那狗 2026-09-30 12 8MB 174 页 24星币

侵权投诉

Guide to the Design of Common Irregularities in Buildings

2012/2015 IBC® and ASCE/SEI 7-10

ISBN: 978-1-60983-607-8

Cover Design: Carmel Gieson

Publications Manager: Mary Lou Luif

Project Editor: Daniel Mutz

Manager of Development: Suzane Nunes Olmos

Typesetting: Amy O'Farrell

NCSEA

Published by

ICC

Cover photo by Brett Drury

Structural Engineers Association (NCSEA). Without advance written permission from the copyright owner,

no part of this book may be reproduced, distributed or transmitted in any form or by any means, including,

without limitation, electronic, optical or mechanical means (by way of example, and not limitation,

photocopying or recording by or in an information storage retrieval system). For information on permission

to copy material exceeding fair use, please contact: ICC Publications, 4051 Flossmoor Road, Country Club

Hills, IL 60478. Phone 1-888-ICC-SAFE (422-7233).

The information contained in this document is believed to be accurate; however, it is being provided for

informational purposes only and is intended for use only as a guide. Publication of this document by the

ICC should not be construed as the ICC or NCSEA engaging in or rendering engineering, legal or other

professional services. Use of the information contained in this book should not be considered by the user

to be a substitute for the advice of a registered professional engineer, attorney or other professional. If such

advice is required, it should be sought through the services of a registered professional engineer, licensed

attorney or other professional.

First Printing: May 2015

PRINTED IN THE U.S.A.

Guide to the Design of Common Irregularities in Buildings iii

Introduction

It is not uncommon to encounter buildings with structural irregularities. The plan layout, aesthetics, space

planning and other issues often result in buildings having irregularities.

Past earthquakes have demonstrated that buildings having irregularities have performed poorly and suffered

greater damage when compared with buildings having regular congurations. This is due to the fact that

the seismic demands imposed on the structure by the ground motion generally tend to be well distributed

throughout the structure. This in turn will lead to the dispersion of energy dissipation and damage.

However, this is not the case for irregular structures wherein the seismic demands tend to concentrate in the

zone of irregularity, resulting in major damage and failure of structural elements in these areas.

The analysis methods that are typically used in the design of structures cannot capture adequately the

demands imposed on the irregular structure and thereby lead to decient design in the zone of irregularity.

Structural irregularities can be classied into two types:

a. Horizontal irregularities

b. Vertical irregularities

Table 12.3-1 describes the circumstances under which buildings must be designated and having a plan

irregularity. Horizontal irregularities that occur due to torsion, reentrant corner and diaphragm discontinuity

require larger force transfer through the diaphragm. The most critical of the discontinuities is the out-

of-plane offset (Type 4 horizontal irregularity) in the lateral force-resisting system. Such offsets impose

large demands on the diaphragm as well as the lateral system. The example problem in this design guide

gives a step-by-step method for designing diaphragms, collectors and chords for a building having Type 4

horizontal irregularity.

Vertical irregularities primarily affect the load distribution over the building height. Table 12.3-2 describes

the circumstances under which buildings must be designated and having a vertical irregularity. The example

problem in this design guide gives a step-by-step method for designing diaphragms, collectors and chords

for a building having Type 4 vertical irregularity. Due to this irregularity the loads imposed at various

levels can be signicantly different from the one assumed in the Equivalent Lateral Force (ELF) analysis

procedure given in the code.

ELF analysis procedure may not be able to capture adequately the distribution of lateral forces over the

height of the building for the following conditions:

• Irregular distribution of mass

• Irregular distribution of stiffness

• Irregular distribution of story strength

• Buildings where lateral motions in two orthogonal directions and torsion motions are

coupled

• Buildings that have signicant change in shear from one level to the next

• Diaphragms that have a signicant offset in the center of mass from one level to the next

• Out-of-plane and in-plane discontinuity in the lateral load-resisting system

文档加载中……请稍候！
如果长时间未打开，您也可以点击刷新试试。

下载文档到电脑，查找使用更方便

亲，本站95%以上的标准规范都面向会员免费，办理VIP会员下载更省钱，平均每篇不到2元

立即下载 VIP免费下载

标签： #设计指南

摘要：

《建筑常见不规则设计指南》基于IBC 2015与ASCE SEI 7-10，系统解析建筑结构常见不规则类型及设计方法，涵盖平面不规则、竖向不规则、扭转、软弱层、短柱、楼板不连续、非平行体系等关键问题。本指南面向结构工程师、建筑师、审图与抗震设计人员，帮助快速识别不规则项、理解规范条文、选择分析模型与抗震措施，并提升美标项目合规性、安全性和审查通过率。适用于海外工程、美国规范抗震设计、结构优化与施工图审查参考，是掌握建筑不规则设计要点与IBC/ASCE实践应用的重要资料。

展开>> 收起<<

建筑常见不规则设计指南基于IBC 2015和ASCE SEI 7-10 Guide to the Design of Common Irregularities in Buildings 2015.pdf

共174页,预览3页

还剩页未读，继续阅读

声明：本文档系会员上传，若文档所含内容侵犯了您的版权或隐私，请立即通知，我们立即给予侵权申诉删除！

建筑常见不规则设计指南基于IBC 2015和ASCE SEI 7-10 Guide to the Design of Common Irregularities in Buildings 2015

相关推荐

开通VIP享超值会员特权

相关内容

热门标签

举报选择:

建筑常见不规则设计指南 基于IBC 2015和ASCE SEI 7-10 Guide to the Design of Common Irregularities in Buildings 2015

相关推荐

开通VIP享超值会员特权

相关内容

热门标签

举报选择:

建筑常见不规则设计指南基于IBC 2015和ASCE SEI 7-10 Guide to the Design of Common Irregularities in Buildings 2015