南湖温泉酒店项目BRB工程应用分析

ENGINEERING APPLICATION ANALYSIS OF BUCKLING RESTRAINED BRACES IN NANHU HOTSPRING HOTEL

以南湖温泉酒店项目为工程实例,使用PKPM结构设计软件进行建模计算,将一般应用于高层钢结构的BRB构件设置于公建混凝土结构中。因该项目存在楼板大开洞、局部转换、错层结构等几个结构难点,其中错层结构很容易形成短构件,会影响结构的抗震性,同时楼板大开洞引起楼板刚性假定发生实质性变化,在受地震作用的影响下容易出现应力集中的情况,甚至会引发应力集中破坏情况。从施工工期、经济性指标比对分析,将BRB构件设置于混凝土结构的工程经验值得应用推广。

This article is based on Engineering examples of Nanhu hotspring hotel, the model computes by PKPM;usually the buckling Restrained Braces are used in high-rise steel structure but concrete frame structure.This engineering haves several difficulty: slab with big opening, structural transfer column, split-level structure and so on;split-level structure can lead to be the short column and reduce anti-seismic capacity of structure.The slab with big opening can lead to the change of the assumption of rigid slab.It could touch off concentration of stresses in the seismic properties. Through comparative analysis of construction period and economical efficiency, it draws a generalized conclusion that the BRBs apply to concrete frame structures.