基于挠度的泰国柔性路面设计方法

IF 2.7 Q2 CONSTRUCTION & BUILDING TECHNOLOGY
A. Sawangsuriya, Tunwin Svasdisant, P. Jitareekul
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引用次数: 0

摘要

泰国公路部(DOH)对柔性路面分析和设计采用了经验和机械两种方法。最近,DOH对基于挠度的设计方法进行了全面审查,以便采用国家设计标准和实践。其中一个关键原因是泰国的道路主管部门,即卫生部和农村道路部(DRR),已经考虑了用于新建和修复道路路面的下落重量偏转计(FWD)。此外,FWD作为一种无损检测方法被广泛应用于挠度测量和结构承载力评估。最终,将发展FWD偏转对内部路面分析和设计的影响,并向泰国道路当局提出建议。因此,本研究提出了基于挠度的泰国柔性路面设计方法。本研究选择FWD和一辆标准泰国卡车作为主要的装载应用。DOH实际采用了典型的FWD加载应力为700-800 kPa,并与轮胎压力为690 kPa的标准10轮25吨卡车进行了比较。采用分层弹性分析方法计算路面响应。结果表明,基于挠度的柔性路面设计方法简单、实用、保守。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Deflection-Based Approach for Flexible Pavement Design in Thailand
The Department of Highways (DOH), Thailand, has adopted both empirical and mechanistic approaches for flexible pavement analysis and design. Recently, the deflection-based design approach has been comprehensively reviewed by the DOH for the possible adoption of national design standards and practices. One of the key reasons is that Thailand’s road authorities, i.e., the DOH and the Department of Rural Roads (DRR), have considered the falling weight deflectometer (FWD) for the new construction and rehabilitation of road pavements. In addition, the FWD is widely accepted as the non-destructive test for deflection measurement and structural capacity evaluation. Ultimately, the implication of FWD deflections for in-house pavement analysis and design shall be developed and proposed to Thailand’s road authorities. Therefore, this study presents the deflection-based approach of flexible pavement design in Thailand. The FWD and a standard Thai truck were selected as the main loading applications in this study. A typical FWD loading stress of 700–800 kPa was practically adopted by the DOH and compared with a standard 10-wheel 25-ton truck with a tandem axle-dual wheel configuration with a tire pressure of 690 kPa. The layered elastic analysis was performed to calculate the pavement responses. The results suggest that the flexible pavement design based on a deflection-based approach is simple, practical, and conservative.
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来源期刊
Infrastructures
Infrastructures Engineering-Building and Construction
CiteScore
5.20
自引率
7.70%
发文量
145
审稿时长
11 weeks
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