建筑结构

2014, v.44;No.376(04) 1-8

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高建钢对多层大悬挑结构体系与节点性能影响分析研究
Research on influence of high-rise structure steel on the multilayer cantilevered structure system and joints

王明珠;葛家琪;王树;张国军;刘鑫刚;
Wang Mingzhu;Ge Jiaqi;Wang Shu;Zhang Guojun;Liu Xingang;China Aviation Planning and Construction Development Co.,Ltd.;

摘要(Abstract):

内蒙古伊金霍洛旗全民健身体育中心为多层空间大悬挑结构体系,大悬挑结构根部构件应力高度集中。本工程在高应力区的关键构件及节点处应用了高建钢。在不同应力比条件下,通过调节悬挑结构根部构件的截面面积,对采用高建钢与采用普通钢悬挑结构的静力弹塑性性能、抗震性能、关键节点的静力性能进行了对比分析。结果表明:在悬挑结构应力集中部位采用高建钢能够有效减小构件吸收的应力,大幅减少用钢量,同时悬挑结构的大变形能力、整体结构在罕遇地震下的抗震性能以及关键节点的承载力和变形能力均有一定提高,而节点转角延性系数虽然降低但仍有足够的延性安全系数。
The multilayer cantilevered structure system is used in the National Fitness Center in Ejin Horo Banner of Inner Mongolia,and stress is highly concentrated at the end of cantilevered structure. High-rise structure steel is used in key structures and joints of high stress concentration area. By regulating section area of the components at the end of cantilevered structure,high-rise structure steel scheme and common steel scheme were compared under different stress ratio in factors of static elasto-plastic performance,seismic performance and static performance of key joints. The results show that the use of high-rise structure steel at stress concentrated area can reduce the stress in key components and reduce the steel consumption greatly. At the same time,the large deformation capacity of the cantileverel structure and the seismic performance under rare earthquake of the whole structure increase as well as bearing capacity and deformation capacity of key joints. The joint rotation ductility factor decreases but is still within safe limits.

关键词(KeyWords): 高建钢;悬挑结构;应力比;延性性能;弹塑性性能
high-rise structure steel;cantileverel structure;stress ratio;ductility performance;elastio-plastic performance

Abstract:

Keywords:

基金项目(Foundation): 北京市科技计划课题(Z131110000213131);; 北京市科技新星计划(Z121106002512098);; 国家自然科学基金重点项目(51038006)

作者(Author): 王明珠;葛家琪;王树;张国军;刘鑫刚;
Wang Mingzhu;Ge Jiaqi;Wang Shu;Zhang Guojun;Liu Xingang;China Aviation Planning and Construction Development Co.,Ltd.;

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DOI: 10.19701/j.jzjg.2014.04.001

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