Track Substructure Assessment using Non-Destructive Load Tests. A Portuguese Case Study.

被引：2
|
作者：
De Chiara, F. [1 ]
Pereira, D. [2 ]
Fontul, S. [3 ]
Fortunato, E. [3 ]
机构：
[1] Univ Rome, I-0018 Rome, Italy
[2] Univ Nova Lisboa, P-2829 516 Caparica, Portugal
[3] LNEC, Nat Lab Civil Engn, P-1700 066 Lisbon, Portugal
来源：
SIIV-5TH INTERNATIONAL CONGRESS - SUSTAINABILITY OF ROAD INFRASTRUCTURES 2012 | 2012年 / 53卷
关键词：
Track construction; FWD; back-calculation; sub-ballast; structural evaluation;
D O I：
10.1016/j.sbspro.2012.09.962
中图分类号：
U [交通运输];
学科分类号：
08 ; 0823 ;
摘要：
Nowadays, there is an increased interest in developing performance based specifications for quality control during the construction, that can provide more realistic information about the life cycle behaviour of the track. In this research, Falling Weight Deflectometer (FWD) tests were undertaken during the construction of a 29 km new railway line, at the top of the substructure and in different months. Based on FWD deflections, structural models of the track were established through back-calculation, and the variation of the moduli for different testing campaigns was evaluated. The main results obtained are presented and analysed in this paper. (C) 2012 The Authors. Published by Elsevier Ltd. Selection and/or peer-review under responsibility of SIIV2012 Scientific Committee
引用
收藏
页码：1130 / 1139
页数：10
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