|Table of Contents|

Strength Properties of Wet-screened Two-graded Aggregate Concrete for High Arch Dam Under Biaxial Stress(PDF)

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

Issue:
2012年02期
Page:
67-73
Research Field:
Publishing date:

Info

Title:
Strength Properties of Wet-screened Two-graded Aggregate Concrete for High Arch Dam Under Biaxial Stress
Author(s):
MA Chao1;  LI Guang-wei2;  ZHOU Jun1;  WU Zhi-min1
1. School of Civil Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China; 2. Hydrochina Chengdu Engineering Corporation, Chengdu 610072, Sichuan, China
Keywords:
concrete;  biaxial stress;  wet-screened two-graded;  failure criterion;  strength property;  nonlinear analysis
PACS:
TU528.1
DOI:
-
Abstract:
Combined with the Xiluodu High Arch Dam project, authors presented an test study on the strength property of wet-screened two-graded aggregate concrete for high arch dam under uniaxial tension, uniaxial compression, biaxial tension-compression, biaxial compression and biaxial tension stress by using the electro-hydraulic servo-controlled triaxial test machine of Dalian University of Technology. A new test loading method was developed for evaluating the concrete strength under tension-compression stress, in which a glued double-plated manner combined with plastic brushes was adopted. The test results show that this new method can make the transformed stress more uniform, and can effectively eliminate the compression deformation restraint of the bonded steel to the concrete specimen at the tension end. Meanwhile, it can improve the test precision and can increase the test efficiency. The appropriate failure criterion developed in the principal stress space for biaxial stress states based on the test results can provide the references for mass hydraulic concrete structural design and nonlinear analysis.

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Last Update: 2012-06-20