|本期目录/Table of Contents|

[1]魏炜,董丁明.锚具变形产生的预应力损失计算[J].建筑科学与工程学报,2007,24(04):86-90.
　WEI Wei,DONG Ding-ming.Calculation for Prestress Losses Due to Deformation of Anchorage Device[J].Journal of Architecture and Civil Engineering,2007,24(04):86-90.
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锚具变形产生的预应力损失计算(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
24卷
期数:
2007年04期
页码:
86-90
栏目:
出版日期:
2007-12-20

文章信息/Info

Title:
Calculation for Prestress Losses Due to Deformation of Anchorage Device
作者:
魏炜1,董丁明2
1. 长安大学 公路学院,陕西 西安 710064; 2. 延安公路管理局,陕西 延安 716000
Author(s):
WEI Wei1, DONG Ding-ming2
1. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Yan'an Highway Management Bureau, Yan'an 716000, Shaanxi, China
关键词:
预应力损失;  后张法;  反向摩擦;  锚具变形;  影响长度;  效应
Keywords:
prestress loss;  post-tensioning method;  reverse friction;  deformation of anchorage device;  influence length;  effect
分类号:
TU378.1
DOI:
-
文献标志码:
A
摘要:
针对后张法预应力混凝土构件中由锚具变形、预应力钢束回缩和接缝压缩等引起的预应力损失计算方法适用范围较窄和误差较大的缺点,基于变形协调条件,通过分段近似计算方法,建立了锚具变形、预应力钢束回缩和接缝压缩等引起的预应力损失计算公式,并与实际预应力混凝土T形截面简支梁的计算结果进行了比较。结果表明,该公式具有计算精度高、适用范围广的优点,特别适用于预应力孔道线形复杂的构件,既易于编制计算程序又可简单地在Excel上完成计算。
Abstract:
According to the post-tensioning method in prestressed concrete members, the calculation method of prestress losses caused by the deformation anchorage device, slip of tendon and joint compression was big in the error and narrow in the scope of application. Based on the condition of deformation compatibility, the computing formula of prestress losses caused by deformationof anchorage device, slip of tendon and joint compression was established by using calculation method of piecewise approximation, meanwhile, the calculation result was compared with the simple T-beam of prestressed concrete. The result shows that the formula is high in precision and wide in applicability. It is apt to work out calculation procedure and can complete the calculation at Excel simply, especially it adapts the member of which its prestressed duct has complex alignment.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2007-10-16
作者简介:魏 炜(1963-),男,陕西长武人,副教授,工学硕士,E-mail:wwei6318@sohu.com。
更新日期/Last Update: 2007-12-20