广州白云国际机场二号航站楼预应力混凝土柱结构设计

发布时间：2018-01-16 14:32

本文关键词：广州白云国际机场二号航站楼预应力混凝土柱结构设计　出处：《建筑结构》2016年S2期 　论文类型：期刊论文

【摘要】：我国的《建筑抗震设计规范》(GB 50011—2010)及《高层建筑混凝土结构技术规程》(JGJ 3—2010)规定钢筋混凝土框架结构的弹性层间位移角限值为1/550。对于层高较大的框排架结构,如机场航站楼、铁路站房、体育馆等建筑,柱顶铰接,排架结构的位移比框架结构大,层间位移角限值往往成为柱截面的控制因素。这些建筑的围护结构多为金属或玻璃幕墙,能承受较大的变形,如混凝土柱仍按1/550的层间位移角限值设计,柱截面往往偏大。如为满足位移角限值而采用钢柱或钢管混凝土柱,则经济代价较大。在广州白云国际机场二号航站楼工程中,对支撑钢屋盖的混凝土柱施加预应力,当结构的弹性层间位移角限值放宽至1/350时,预应力混凝土柱仍基本处于弹性状态,柱截面尺寸得到优化,建筑效果和经济效益显著。
[Abstract]:Code for Seismic Design of buildings in China (GB50011-2010) and Technical Specification for High-rise Building concrete structures (JGJ3-2010). The limit of displacement angle between elastic stories of reinforced concrete frame structure is defined as 1 / 550. for frame frame structure with high story height. Such as airport terminal, railway station, gymnasium and other buildings, the roof hinge, the displacement of the frame structure is larger than the frame structure. The limiting value of interstory displacement angle often becomes the control factor of column section. The envelope of these buildings is mostly metal or glass curtain wall, which can withstand large deformation. If the concrete column is still designed according to the limit value of 1/550 interstory displacement angle, the section of the column is often larger. For example, steel column or concrete-filled steel tube column is used to meet the displacement angle limit value. In Guangzhou Baiyun International Airport Terminal 2, prestressed concrete columns supporting the steel roof are applied when the elastic displacement angle of the structure is relaxed to 1/350. The prestressed concrete column is still in the elastic state, the section size of the column is optimized, and the construction effect and economic benefit are remarkable.
【作者单位】：广东省建筑设计研究院;
【分类号】：TU378.3
【正文快照】： 1工程概况广州白云国际机场二号航站楼,场地位于广东省广州市花都区,总建筑面积63.4万m2,包含主楼、东指廊、西指廊、北指廊等分区。其中西五、西六指廊主体结构地下设备管沟1层,地上2层,局部3层,建筑总高约15.07~26.80m。主体结构采用钢筋混凝土框架结构,屋盖采用钢网架结构

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