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结构刚重比算法研究及软件实现
武云鹏,韩博,郭峰,苗启松
摘 要
(北京市建筑设计研究院有限公司, 北京 100045)

[摘要]刚重比是衡量结构整体稳定性的重要指标。《高层建筑混凝土结构技术规程》(JGJ 3—2010)第5.4节对此提出了明确要求,并在5.4.1的条文说明中给出了倒三角荷载下的具体计算公式。根据这些基本规定和相关力学模型,重新推导了可用于一般水平荷载下的刚重比计算公式,并针对风荷载和地震作用两种常见水平荷载进行了计算机软件的具体实施和数值试验,取得了良好的效果。目前该算法已内置于北京市建筑设计研究院有限公司自主研发的结构设计软件Paco中,可给出全部水平工况下的刚重比计算结果,方便工程师进行校核和评估。
[关键词]刚重比; 风荷载; 地震作用; 有限元法
中图分类号:TU375      文献标识码:A      文章编号:1002-848X(2015)18-0071-04

Research on algorithm and software implementation of stiffness-weight ratio of buildings
 
Wu Yunpeng, Han Bo, Guo Feng, Miao Qisong
 
(Beijing Institute of Architectural Design, Beijing 100045, China)
 
Abstract: Stiffness-weight ratio is an important indicator to measure the overall stability of structures. Clearly defined limits  are provided in the section 5.4 of Technical specification for concrete structures of tall building(JGJ 3—2010), and the specific formula for cases under inverted triangle load is provided in the explanation of 5.4.1 provisions. A formula to calculate the stiffness-weight ratio for general cases was proposed based on the relevant provisions and mechanical models, and the software implementations and numerical experiments  for cases under wind and earthquake load were provided respectively which achieved good effect.  This formula has been applied in Paco software for structure design developed by Beijing Institute of Architectural Design independently, and the stiffness-weight ratio in all kinds of horizontal load cases can be provided. Therefore, engineers can check and evaluate the design result more easily according to the indicators.
 
Keywords: stiffness-weight ratio; wind load; earthquake action; finite element method

作者简介:武云鹏,博士,高级工程师,Email:wuyunpeng@tsinghua.org.cn
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