陕西省信息大厦超高层结构设计和安全性分析

Structural Design and Safety Analysis of Shanxi Information Tower

陕西省信息大厦结构设计有以下特点:(1)是目前国内8度抗震设防地区最高的超限高层钢筋混凝土组合简体结构,主楼高189.4m;(2)国内首次在黄土地区采用68m长的超长钻孔灌注桩;(3)为减少建筑物高度,7～48层采用部分无粘结预应力混凝土板结构;(4)进行了结构弹塑性分析,包括静力推覆(Pushover)分析和动力反应时程分析。

The Tower project is an ultra highrise building, it has 52 stories and a height of 189.4 meters. The main features of the structural design are as follows:1. Steel reinforced concrete structure (SRC) and tube in tube structural system have been adopted in this project as required by the project owner.2. Bored piles in 68 meters ultralong is firstly used in the loess area.3. Unbonded prestressed concrete floor slabs are used from 7th to 48th floor to reduce the total height of the building.4. Sophisticated three dimensional nonlinear analyses, including pushover analysis, dynamic response, time history analysis, are decided to precisely evaluate the seismic behavior and safety of the building.