|Table of Contents|

Prediction analysis of bridge structural response based on linear regression(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2009年05期
Page:
76-80
Research Field:
Publishing date:
2009-10-20

Info

Title:
Prediction analysis of bridge structural response based on linear regression
Author(s):
LIU Xuzheng1;  WANG Da2;  XU Hanzheng3
1. School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang 330013, Jiangxi,China; 2. School of Civil Engineering and Architecture, Changsha University of Science and Technology, Changsha 410076, Hunan, China; 3. Key Laboratory for Bridge and Tunnel of Shaanxi Province, Changan University, Xian 710064, Shaanxi, China
Keywords:
bridge engineering;  linear regression;  structure response;  prediction;  cablestayed bridge;  load efficiency coefficient
PACS:
U446.1
DOI:
-
Abstract:
Aimed at the problem existed in load efficiency coefficient of longspan bridges, the load efficiency coefficient decreasing is discussed. The linear regression equations of structural response (stress，strain and cable forces) and load efficiency coefficient are obtained by linear regression analysis，and the significance test of the equations is finished. Based on the linear regression equations，the structural response can be predicted. Finally，the main beam deflection and stress of a practical longspan PC bridge are predicted by this method. The research results show that the linear regression equations are highly significant and can predict structural response accurately. A computation example show that the prediction error of main beam deflection is 0.8 cm and the prediction error of main beam stress is 6.5×10-6, the error can meet the engineering accuracy requirements. 6 tabs, 4 figs, 10 refs.

References:

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Last Update: 2009-10-20