贵州省科技馆多功能厅预应力井字梁结构设计

Structural Design on Pre-stressed Cross Beam of Multi-purpose Hall of Guizhou Province Science and Technology Museum

贵州省科技馆多功能厅平面尺寸24 m×25.2 m,层高5.85 m,由于布展净高的需要、梁裂缝和挠度的控制等因素,屋面采用了无粘结预应力井字梁体系。在此基础上对结构计算、材料、预应力工艺、截面配筋及一些问题进行了探讨及分析处理。

The plane size of multi - purpose hall of Guizhou Province science and technology museum is 24 m × 25.2 m, building store height is 5.85 m. Because of the arrangement display net height need requirement, and owing to other factors such as the beam crack and the control of deflection, etc. , the roofing used the system of unbonded prestressed cross beam. This article introduced the structure computation, the material, the craft of prestressed, the section reinforcing bars and some problems＇ solution.