摘要
深圳京基金融中心94层以上采用顶拱管桁架结构,顶拱高39.3 m,由6榀桁架柱与其之间的连杆组成,顶拱柱脚24个铰支座与外框钢柱铰接。根据顶拱的结构特点,在顶拱下部设置措施胎架作为临时支撑,胎架下部钢梁与相邻钢柱或核心墙之间设置斜支撑进行加固处理,保证了顶拱安装稳定性。顶拱安装过程中,胎架最大变形为13.58 mm;支撑钢梁加固结构最大应力为132.30 MPa,最大变形为10.89 mm,均满足相关规范要求,顶拱安装稳定可靠。
Shenzhen Kingkey Financial Center is made up of top arch tube truss structure above the ninety-fourth floor, the top arch is 39.3 meters high and composes by six truss columns and connecting members, the top arch column footing contains twenty-four hinged supports that connected steel columns of outer framed-tube structure. According to the top arch structure characteristics, jig frame was set as temporary support at the lower part of top arch, the curved steel supports were also set to reinforce between the steel beams of the lower part of jig frames anti adjacent steel columns or core tube wall, ensuring the top arch installation stability. During the top arch installation, the maximum deformation of jig frame was 13.58 millimeters, the maximum stress of support beam reinforced structure was 132.30 N/mm2 and the maximum deformation was 10.89 millimeters, all of them could satisfy the requirements of code for design of steel struetures, the top arch installation showld be stable and reliable.
出处
《钢结构》
2018年第1期92-95,52,共5页
Steel Construction
关键词
顶拱
胎架
加固
变形
稳定性
top arch
jig frame
reinforcement
deformation
stability
