基于偏转计的有碴铁路轨道分析

IF 0.3 Q4 ENGINEERING, GEOLOGICAL

Geotechnical Engineering Pub Date : 2007-07-01 DOI:10.1680/GENG.2007.160.3.169

M. Burrow, A. Chan, A. Shein

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引用次数: 43

摘要

英国采用落重偏转计(FWD)装置对有碴铁路轨道进行动态测试。利用从测试中获得的挠度数据，可以使用称为反分析的程序确定建立轨道数值模型所需的轨道子结构的弹性模量值。由此标定的数值模型可用于确定交通荷载对铁路轨道系统应力、应变和变形的影响，是轨道子结构设计分析方法的重要组成部分。本文通过一个算例，说明了利用动力有限元分析方法对铁路路基挠度数据进行材料性能反分析的方法。本文提出的数值方法是基于fwd的有碴轨道反分析和状态评估的合理方法，随着有限元技术和计算机技术的不断发展，该方法变得切实可行。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Deflectometer-based analysis of ballasted railway tracks

The falling weight deflectometer (FWD) device is used in the UK for the dynamic testing of ballasted railway track. Using the deflection data obtained from the test, elastic modulus values of the track substructure required to build a numerical model of the track can be determined using a procedure known as back-analysis. The numerical model so calibrated can be used to determine the effect of the traffic loads on the stresses, strains and deformations in the railway track system, and is an important component of an analytical approach to track substructure design. In this paper, the use of dynamic finite-element analysis to back-analyse the material properties of the railway substructure from FWD deflection data has been demonstrated by means of an example. The numerical approach presented is the rational method for FWD-based inverse analysis and condition evaluation of ballasted railway tracks, and becomes practicable owing to continued advances in finite-element and computer technologies.

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来源期刊

Geotechnical Engineering ENGINEERING, GEOLOGICAL-

CiteScore

0.50

自引率

0.00%

发文量

期刊介绍： The objectives of the Association shall be the promotion of co-operation among geotechnical societies in SE Asia; and the assistance to member societies who have limited number of members. Now there is only one combined web titled: AGSSEA-SEAGS. SEAGS & AGSSEA encourage the submission of scholarly and practice-oriented articles to its journal. The journal is published quarterly. Both sponsors of the journal, the Southeast Asian Geotechnical Society and the Association of Geotechnical Societies in Southeast Asia, promote the ideals and goals of the International Society of Soil Mechanics and Geotechhnical Engineering in fostering communications, developing insights and enabling the advancement of the geotechnical engineering discipline.