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邱  劍，  王東峰，  葉志雄，  劉  昶

（中信建筑設(shè)計(jì)研究總院有限公司，武漢430014）

 

[摘要] 預(yù)應(yīng)力混凝土設(shè)計(jì)軟件PKPM/PREC和MIDAS/Gen在計(jì)算中各有優(yōu)點(diǎn)和不足。結(jié)合貴陽(yáng)北站工程，從次梁預(yù)應(yīng)力筋對(duì)主梁設(shè)計(jì)內(nèi)力的影響、梁預(yù)應(yīng)力筋錨固位置對(duì)梁端設(shè)計(jì)內(nèi)力的影響、梁預(yù)應(yīng)力筋錨固位置對(duì)柱子設(shè)計(jì)內(nèi)力的影響、梁端有剪力墻時(shí)對(duì)梁預(yù)應(yīng)力筋效率的影響等幾個(gè)方面進(jìn)行研究分析。發(fā)現(xiàn)在布置預(yù)應(yīng)力鋼筋時(shí)如果不考慮這些因素可能會(huì)導(dǎo)致安全問題。所以在計(jì)算復(fù)雜的預(yù)應(yīng)力框架結(jié)構(gòu)時(shí)應(yīng)采用多個(gè)軟件進(jìn)行復(fù)核。

[關(guān)鍵詞] 預(yù)應(yīng)力混凝土；框架結(jié)構(gòu)；預(yù)應(yīng)力筋布置；內(nèi)力影響

中圖分類號(hào)：TU378.2    文獻(xiàn)標(biāo)識(shí)碼：A    文章編號(hào)：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