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巨型型鋼混凝土框撐-核心筒結(jié)構(gòu)性能分析*
陳麟,楊航,周云
摘 要

(廣州大學(xué)土木工程學(xué)院,廣州 510006)
[摘要]巨型型鋼混凝土框撐-核心筒結(jié)構(gòu)是由巨型型鋼混凝土框架、巨型支撐、混凝土核心筒和伸臂桁架組成的一種具有多道抗震防線的新型超高層結(jié)構(gòu)體系。對(duì)設(shè)置X形和倒V形巨型支撐以及設(shè)置巨型支撐的同時(shí)去除巨型梁下層次柱的結(jié)構(gòu)體系進(jìn)行了分析。結(jié)果表明:設(shè)置X形巨型支撐可以使結(jié)構(gòu)的整體剛度明顯增大,提高了框架作為第二道抗震防線的承載力;倒V形巨型支撐對(duì)結(jié)構(gòu)剛度的貢獻(xiàn)相對(duì)較小,但引起的局部構(gòu)件內(nèi)力突變也較??;設(shè)置巨型支撐的同時(shí)去除次柱會(huì)造成局部構(gòu)件的內(nèi)力突變,但可以使巨型框架的主、次結(jié)構(gòu)受力更明確,提高主結(jié)構(gòu)的效率,同時(shí)滿足建筑大開間的要求。
[關(guān)鍵詞]巨型結(jié)構(gòu);型鋼混凝土;核心筒;巨型支撐;超高層建筑
中圖分類號(hào):TU398-7文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1002-848X(2012)03-0091-05
Analysis on performance of mega SRC braced frame-core wall structure
Chen Lin, Yang Hang, Zhou Yun(School of Civil Engineering, Guangzhou University, Guangzhou 510006, China)
Abstract:Mega SRC braced frame-core wall structure is a new type of structural system for super high-rise buildings, consisting of mega SRC frame, mega braces, RC core wall, and outrigger trusses. Analysis was carried out on the performance of the structures with X type of mega braces and inverted V type of mega braces, and with mega braces but the common columns under mega beams were moved away. The results indicate that the integrated stiffness can be improved more effectively by using X type of mega braces than inverted V type of mega braces, but the mutation of internal forces of some members induced by using inverted V type of mega braces is relatively small. Moving away the common columns under mega beams will induce sudden changes of internal forces of several members, but make the load transfer path more clear between main structure and substructure, and higher material utilization of mega members is obtained. In addition, architectural requirement for open space can be satisfied.
Keywords:mega structure; steel reinforced concrete; core wall; mega brace; super high-rise building
*廣東省基金團(tuán)隊(duì)項(xiàng)目(8351009101000001),廣東省科技計(jì)劃項(xiàng)目(2008B030303075),廣州市科技計(jì)劃項(xiàng)目(2008J1-C251-1),廣州市屬高??萍加?jì)劃項(xiàng)目(08C048),廣州大學(xué)減震控制與結(jié)構(gòu)安全開放實(shí)驗(yàn)室基金項(xiàng)目。
作者簡(jiǎn)介:陳麟,博士,副教授,Email:zyfychen@163.com。
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