﻿ 某大开洞办公楼结构设计的分析

# 某大开洞办公楼结构设计的分析Analysis of Structural Design of a Large Open Hole Office Building

Abstract: One building with two huge holes, which consider for lighting, causes the structure problems of structural period ratio, and structural beam-column section is large. This building was designed as steel frame system and steel frame-brace structure. By using the software of PKPM, the compre-hensive economic indicators of structures are reasonable, through structural performance design and comparison of the schemes, ensuring functional and structural safety of the building.

1. 引言

2. 概述

Figure 1. Standard floor plan of building

Table 1. Basic seismic data of the structure

3. 结构体系及设计概况

4. 结构设计中问题的探索

4.1. 结构选型

Figure 2. The column location

Table 2. Section dimensions of main components (Overground structure)

4.2. 支撑布置方案选择

Figure 3. Support arrangement 1

Figure 4. The setting of the corner of the building

Figure 5. Support arrangement 2

Figure 6. The column location

Figure 7. Stereogram of upper steel structure

Table 3. Comparisons of calculation results of three schemes

4.3. 设计后续处理

Figure 8. Shear force under X-direction earthquake

Figure 9. Shear force under Y-direction earthquake

Figure 10. Capability spectrum of pushover analysis

5. 结束语

1) 在高烈度地区，软场地，结构平面中间有大开洞的情况，结构周期比容易超限，在解决周期比超限的情况时，可增大底层外圈梁柱截面。

2) 对于周期比容易超限的结构，增大梁柱截面后，会带来不经济，装修不便，楼层净高不满足使用要求等影响，宜考虑对结构设置支撑，使结构整体参数满足规范要求的同时，也能满足使用、美观、经济的要求。

3) 当支撑位于楼梯、电梯处时，将楼梯、电梯处楼板设为弹性膜，楼板不对力有传递作用。计算后，结构满足抗震要求。

[1] 冯冲, 骆冰. 试析钢结构在高层建筑工程中的应用[J]. 河南科技, 2013(10): 173-173.

[2] 高立翔, 谢平荣. 钢结构在高层中的应用及问题[J]. 中国建筑金属结构, 2013(6): 22-22.

[3] 陈明华, 高轩能. 支撑类型和布置方式对高层钢框架结构抗侧移刚度的影响[J]. 钢结构, 2006.

[4] 张谨. 钢框架-偏心支撑结构体系在高烈度区工程中的应用研究[C]. 钢结构工程研究（六）——中国钢结构协会结构稳定与疲劳分会2006年学术交流会论文集. 北京: 钢结构, 2016.

Top