摘要
延安大剧院主体采用框架-剪力墙结构,双向超长,屋盖采用双向双层网架结构,并充分考虑风荷载和温度变化的影响。屋盖网架采用单体模型和整体模型分别计算的方法,取包络结果进行设计。框架柱(梁)上设置板式橡胶支座及成品双向滑动抗震铰支座,作为网架的支座,其有效减少了网架与主体之间的相互约束,使用效果良好。对转换柱、梁、桁架进行性能设计,提高抗震构造措施,保证其安全可靠。对于大悬挑和大跨度的混凝土构件,加设预应力筋,减少挠度和裂缝。根据分析结果,结构设计合理,可供设计参考。
The main structure of Yan'an Grand Theater is the frame-shear wall structure,which is two-way super long.The roof adopted two-way double-layer grid structure and fully considered the influence of wind load and temperature changes.The single model and the overall model were used to calculate the roof grids respectively,and the design was based on the envelope results.The laminated rubber bearings and the finished bidirectional sliding seismic hinge bearings were installed on the frame columns(beams)to serve as the support of the grid,which effectively reduces the mutual restraints between the grid structure and the main body,and it works well.In order to ensure the safety and reliability,performance-based design was conducted of the transfer column,beam and truss,and structural measures for seismic resistance were improved.For large-cantilever and large-span concrete members,prestressing tendons were added to reduce deflections and cracks.According to the results of the analysis,the structural design is reasonable and can be used for design reference.
作者
王洪臣
张涛
褚玲
WANG Hongchen;ZHANG Tao;CHU Ling(China Northwest Architecture Design and Research Institute,Xi'an 710018,China)
出处
《建筑结构》
CSCD
北大核心
2020年第11期27-32,共6页
Building Structure
关键词
延安大剧院
网架
包络设计
滑动支座
性能设计
预应力
大悬挑
大跨度
Yan'an Grand Theater
grid
envelope design
sliding bearing
performance design
prestressing force
large cantilever
large span
