|Table of Contents|

Calculation for Prestress Losses Due to Deformation of Anchorage Device(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2007年04期
Page:
86-90
Research Field:
Publishing date:
2007-12-20

Info

Title:
Calculation for Prestress Losses Due to Deformation of Anchorage Device
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
Keywords:
prestress loss;  post-tensioning method;  reverse friction;  deformation of anchorage device;  influence length;  effect
PACS:
TU378.1
DOI:
-
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.

References:

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Memo

Memo:
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Last Update: 2007-12-20