Journal Published Online: 03 October 2019
Volume 48, Issue 1

Experimental Evaluation of Strut-and-Tie Model of Anchorage Zone in Posttensioned Concrete Structures

CODEN: JTEVAB

Abstract

This article presents a series of experimental investigations assuming the strut-and-tie model (STM) for anchorage zones in posttensioned concrete structures. The test design for concrete samples is based on finite element analysis for a prestressing process. For end anchorage specimens, the relative location of the reinforcement centroid with respect to the bursting force center was investigated. The test results indicate that the specimen with the coincident reinforcement centroid shows the best performance in resisting the tension load. The presence of spiral reinforcement in the region below the bearing plate results in a redistribution of internal stresses in the anchorage zone. Therefore, Mörsch’s model should be refined by moving the STM configuration down by a distance of a quarter of the anchor size. For the interior anchorage zone, the test results confirm that the modified International Federation for Prestressing model offers a safe but economical STM scheme for the interior anchorage zone.

Author Information

Zhang, Jia-Xuan
Department of Civil Engineering, School of Naval Architecture, Ocean, and Civil Engineering, Shanghai Jiao Tong University, Shanghai, China Department of Civil and Environmental Engineering, College of Engineering, Shantou University, Shantou, Guangdong, China
Hou, Dong-Wei
Department of Civil Engineering, School of Naval Architecture, Ocean, and Civil Engineering, Shanghai Jiao Tong University, Shanghai, China
Zhao, Jian-Li
Engineering Design and Research Institute, China MCC20 Corp. Ltd., Shanghai, China
Shen, Shui-Long
Department of Civil and Environmental Engineering, College of Engineering, Shantou University, Shantou, Guangdong, China
Horpibulsuk, Suksun
School of Civil Engineering, Suranaree University of Technology, Nakhon Ratchasima, Thailand
Pages: 19
Price: $25.00
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Details
Stock #: JTE20180883
ISSN: 0090-3973
DOI: 10.1520/JTE20180883