本文選題：土基回彈模量　切入點：路表彎沉　出處：《河北工業(yè)大學》2014年碩士論文　論文類型：學位論文

【摘要】：在進行路面組合設計的時候，除了要考慮路面的結構組合設計還要考慮到土基的情況，土基回彈模量是反應土基性能的重要指標，，它的確定受到各種因素的影響，如土的類型、壓實度和含水量等。本文通過對各個地區(qū)實驗數(shù)據(jù)的收集和分析，對上述各個因素對土基的影響做出了簡要分析，得到了各個因素對土基的宏觀影響規(guī)律。 本文以土基回彈模量這個重要的影響因素為核心，分析了路面結構層參數(shù)（面層、基層、底基層的厚度和模量）和土基回彈模量對路表彎沉、土基頂面彎沉和層底彎拉應力等路面設計指標的綜合影響。此外本文在水泥混凝土路面設計中也做出了相應分析，探究了土基回彈模量對板底當量回彈模量和水泥混凝土板底荷載應力的影響情況。路面的整個設計過程都會受到土基回彈模量的影響。本文按照不同月份的土基回彈模量的變化情況提出了改進的土基回彈模量，對我國土基回彈模量的選取進行了優(yōu)化，為路面設計提供了參考。
[Abstract]:In pavement combination design, in addition to considering the structural combination design of pavement, the soil foundation resilience modulus is an important index to reflect the performance of soil foundation, and its determination is affected by various factors, such as the type of soil. Through the collection and analysis of experimental data in various regions, the influence of the above factors on soil foundation is briefly analyzed, and the macroscopic influence law of each factor on soil foundation is obtained. In this paper, the parameters of pavement structure layer (the thickness and modulus of surface layer, base course and base base) and the modulus of resilience of soil foundation are analyzed for the deflection of road surface, taking the modulus of resilience of soil foundation as the core. The comprehensive influence of the pavement design indexes such as the deflection of the top surface of the soil foundation and the bending and tensile stress on the bottom of the soil foundation, and the corresponding analysis in the design of the cement concrete pavement are also made in this paper. The influence of the modulus of resilience of soil foundation on the equivalent modulus of springback of slab bottom and the load stress on the floor of cement concrete slab is investigated. The whole design process of pavement will be affected by the modulus of resilience of soil foundation. The improved elastic modulus of soil foundation is proposed for the variation of resilience modulus. The selection of resilience modulus of soil foundation in China is optimized, which provides a reference for pavement design.
【學位授予單位】：河北工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U416

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本文編號：1590539