Structural behaviour of precast tunnel segments in fiber reinforced concrete

被引：143

作者：

Caratelli, Angelo ^{[1
]}

Meda, Alberto ^{[1
]}

Rinaldi, Zila ^{[1
]}

Romualdi, Paolo ^{[2
]}

机构：

[1] Univ Roma Tor Vergata, Dept Civil Engn, I-00133 Rome, Italy

[2] Seli Tunnel SpA, Rome, Italy

来源：

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY | 2011年 / 26卷 / 02期

关键词：

Precast tunnel segment; Fiber reinforced concrete; Flexural experimental tests; Point load experimental tests;

D O I：

10.1016/j.tust.2010.10.003

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

An experimental research on the possibility of using fiber reinforced concrete precast tunnel segments instead of traditional reinforced concrete (RC) elements is presented herein. This solution allows removing the traditional reinforcement with several advantages in terms of quality and cost reduction. The case of precast elements used with a Tunnel Boring Machine (TBM) in the Brennero Base Tunnel has been considered. Full-scale tests on both traditional reinforced concrete and fiber reinforced elements have been performed. In particular, bending tests were carried out in order to compare the behaviour of the segments under flexural actions, while point load tests were developed with the aim of simulating the thrust force induced by the Tunnel Boring Machine, and then the effect of load concentration and splitting phenomena. The tests results showed that, in this peculiar application, the fiber reinforced concrete can substitute the traditional reinforcement; in particular the segment performance is improved by the fiber presence, mainly in terms of cracking opening control. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：284 / 291

页数：8

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