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Desirable Values for Pavement Evaluation and Study of Performance Prediction Model

路面评价理想值及性能预测模型研究

基本信息

批准号：
17560413
负责人：
MATSUI Kunihito
金额：
$ 2.24万
依托单位：
Tokyo Denki University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2006
项目状态：
已结题

项目摘要

It has been known that a modulus of asphalt concrete depends highly on its temperature. Civil Engineering Research Institute for Cold Region, Incorporated Administrative Agency Public Works Research Institute conducted pavement at the test sites in Wakkanai, Hokkaido in 2004 for the purpose of establishing pavement design code in the cold region. In June, August, November 2006, FWD tests were conducted and pavement temperature was also measured. We made use of these data. Backcalcalculat5ion was performed by both static and dynamic methods to estimate layer moduli. From both backcalculated Layer moduli and there temperature, a temperature dependent model of asphalt concrete layer was established. We also measured layer thickness by GPR test, we confirmed that GPR could identify thickness of asphalt concrete layer.Since asphalt concrete modulus is sensitive to its temperature, it is important to predict pavement temperature without measuring it directly. Temperature in pavement is influenced by meteorological change and thermal properties of pavement layers. Last year we developed a method to estimate thermal properties such as heat capacity and thermal conductivity from measured temperature data. In order to predict pavement temperature, we found atmospheric radiation is as important as solar radiation. We developed the atmospheric radiation model using downward infrared radiation observed at our test site at Tokyo Denki University.A common approach to estimate pavement layer moduli utilizes peak load and peak deflections from FWD data. Considering that FWD applies impulsive load to pavement surface, we have developed efficient dynamic backcalculation software called DBALM. DBALM can identify not only layer moduli but also the corresponding layer damping coefficients. In addition to layer modulus and damping coefficients, we have developed new algorithm which can identify a layer density. Reliability confrimation of the algorithm is in progress.

众所周知，沥青混凝土的模数在很大程度上取决于其温度。寒区土木工程研究所、企划厅公共工程研究所为制定寒区路面设计规范，于2004年在北海道和谷内市的试验场进行了路面铺装。2006年6月、8月、11月，进行了FWD测试，并测量了路面温度。我们利用了这些数据。用静态和动态两种方法进行反推计算，以估计层模数。根据反算的层间模数和温度，建立了沥青混凝土层的温度依赖模型。通过探地雷达试验对路面层厚进行了测量，证实了探地雷达可以识别沥青混凝土层的厚度，由于沥青混凝土的弹性模数对温度非常敏感，因此在不直接测量路面温度的情况下对路面温度进行预测是非常重要的。路面温度受气象变化和路面各层热物性的影响。去年，我们开发了一种方法，可以根据测量的温度数据估计热容量和导热系数等热性质。为了预测路面温度，我们发现大气辐射和太阳辐射一样重要。我们利用在东京电木大学试验场观测到的向下红外辐射建立了大气辐射模型。估计路面层模数的常用方法是利用FWD数据的峰值荷载和峰值挠度。考虑到FWD对路面施加冲击荷载，我们开发了高效的动态反计算软件DBALM。DBALM不仅可以识别层的模数，还可以识别相应的层的阻尼系数。除了层弹性系数和阻尼系数外，我们还开发了一种新的算法来识别层密度。算法的可靠性验证正在进行中。

项目成果

期刊论文数量（40）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Evaluation of Pavement Performance Considering Stress Dependency Behavior of Unbound Materials

考虑未粘合材料的应力依赖性行为的路面性能评估

DOI：
发表时间：
2005
期刊：
5^<th> International Conference on Road and Airfield Pavement Technology (ICPT 2005) I
影响因子：
0
作者：
Fujinami;K.;Maina;J.W.;Inoue;T.;Matsui;K.;Kikuta;Y.
通讯作者：
Y.

多層弾性理論による舗装構造解析入門-GAMES(General Analysis of Multi-layered Elastic Systems)を利用して-舗装工学ライブラリー3

使用多层弹性理论进行路面结构分析简介 - 使用 GAMES（多层弹性系统的一般分析） - 路面工程库 3

DOI：
发表时间：
2005
期刊：
影响因子：
0
作者：
Nishizawa;T.;Abe;T.;Taniguchi;S.;Matsui;K.;相原伸一;舗装工学委員会(松井他)
通讯作者：
舗装工学委員会(松井他)

Elastic Analysis of Pavement Structure with Application of Vertical and Centripetal Surface Forces

应用垂直和向心表面力的路面结构弹性分析

DOI：
发表时间：
2006
期刊：
10^<th> International Conference for Asphalt Pavement, Quebec City, Canada (CD-ROM)
影响因子：
0
作者：
Maina;J.;Fujinami;Ki.;Matsui;K.;Inoue;T.
通讯作者：
T.

Correction of Analyzed Pavement Strain by Incorporating Residual Strain with Dynamic Loading

通过将残余应变与动荷载结合来修正分析的路面应变