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首页> 外文会议>Constitutive modeling of geomaterials : advances and new applications >Investigation of Behavioral Aspects of Flexible Pavement under Various Conditions by Finite Element Method
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Investigation of Behavioral Aspects of Flexible Pavement under Various Conditions by Finite Element Method

机译：用有限元方法研究各种条件下柔性路面的行为

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Basic aim of this paper is to develop a tailor made program for design and analysis of flexible pavements using finite element method which will enhance the scope to use variety of combinations of materials,conditions,and various parameters which correlates with the actual conditions on the field.The conditions which affect the flexible pavement are variation of wheel loading,temperature,seepage,varying thickness,etc.Both positive and negative change in temperature during day time and night time as well as due to seasonal changes will be considered.The water seeps through sub grade which results in decrease in life of pavement by reduction in sub grade modulus.The effect of water table will be studied on swelling and shrinkage property of sub grade.Similarly performance of pavement will be checked by varying thicknesses of asphalt concrete,and base layers.The capillary water held in pores of concrete pavement may cause failure of pavement by freezing and thawing action,The effect of wheel loading cannot be neglected as severe pavement damage is because of higher axle loads.However from the past studies and through the recommendations of the AASHTO code of practice the actual wheel load and their combinations couId be shortlisted.The complex characteristic of the present day systems therefore demands an application of analytical tool which can accommodate the details of the complex system.In this connection it should be noted that the versatile finite element solution technique holds a bright promise.Therefore it is proposed to discuss at length the application of the finite element method towards design of the flexible pavements.
机译：本文的基本目的是开发一种使用有限元方法设计和分析柔性路面的量身定制的程序，这将扩大使用与现场实际条件相关的各种材料，条件和各种参数组合的范围。影响柔性路面的条件是车轮载荷，温度，渗流，厚度变化等变化。白天和黑夜以及季节变化都会引起温度的正负变化。通过降低路基的模量来降低路面寿命。研究地下水位对路基的膨胀和收缩性能的影响。同样，通过改变沥青混凝土的厚度来检查路面的性能，以及保持在混凝土路面孔隙中的毛细水可能会因冻结和解冻作用而导致路面破坏，产生白化作用。鳗鱼负载不能忽略，因为严重的路面损坏是由于轴负载较高所致。然而，根据过去的研究并通过AASHTO作业规范的建议，可以将实际的车轮负载及其组合入围。当今系统的复杂特性因此需要一种能够容纳复杂系统细节的分析工具。在这一点上应该指出，通用有限元求解技术具有广阔的前景。因此，建议对有限元的应用进行详细讨论。设计柔性路面的方法。

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