邱  剑，  王东峰，  叶志雄，  刘  昶

（中信建筑设计研究总院有限公司，武汉430014）

 

[摘要] 预应力混凝土设计软件PKPM/PREC和MIDAS/Gen在计算中各有优点和不足。结合贵阳北站工程，从次梁预应力筋对主梁设计内力的影响、梁预应力筋锚固位置对梁端设计内力的影响、梁预应力筋锚固位置对柱子设计内力的影响、梁端有剪力墙时对梁预应力筋效率的影响等几个方面进行研究分析。发现在布置预应力钢筋时如果不考虑这些因素可能会导致安全问题。所以在计算复杂的预应力框架结构时应采用多个软件进行复核。

[关键词] 预应力混凝土；框架结构；预应力筋布置；内力影响

中图分类号：TU378.2    文献标识码：A    文章编号：1002-848X(2012) S2-0384-04

 

Qiu Jian, Wang Dongfeng, Ye Zhixiong, Liu Chang

( CITIC General Institute of Arclutectural Design and Research Co., Ltd., Wuhan 430014, China)

 

Abstract: There are some strong and weak points in the design software of PKPM/PREC and MIDAS/Gen. This paper will refer to Guiyang North Railway Station to do some research from the following respects. At firstly, influenced girder intemal force and moment and torque by prestressed steelin secondary beam. At the same time, influenced intemal force on beam end because of the position of prestress anchoraging. Secondly, influenced intemal force on column because of the position of prestress anchoraging. Influenced prestress efficiency because of the shear wall on beam end. There will be some safety problems when layout prestressed steelin frame structure if we don not think about this respects.  So we should use two more softwares to calculate and double-check when design complicated prestressed frame.

Keywords: prestressed concrete; frame structure; prestressed steel layout; internal force influence