本文選題：低矮路堤 + 交通荷載��； 參考：《河北工業(yè)大學(xué)》2015年碩士論文

【摘要】：目前在快速公路的設(shè)計(jì)中,受構(gòu)造物限制,路基填筑高度一般偏高,多數(shù)在3-4m之間。但是,高路堤存在很多缺點(diǎn),例如:用土量大,占用耕地多,破壞植被,造成水土流失;沉降大,易受到暴雨沖刷塌萬(wàn),增加邊坡防護(hù)加固工程量,成本高;施工難度大,工期長(zhǎng);自然景觀破壞嚴(yán)重,不能滿足人們視覺(jué),心理舒適,安全的需要。針對(duì)于這種現(xiàn)狀,快速路采用低矮路堤和淺路塹方案,節(jié)約耕地資源,走可持續(xù)發(fā)展的道路,是未來(lái)城市快速路建設(shè)應(yīng)著重解決的問(wèn)題。本文首先從交通荷載作用下對(duì)低矮路堤影響的研究現(xiàn)狀入手,經(jīng)交通荷載的理論研究,對(duì)車輛荷載的特點(diǎn)、模擬方法進(jìn)行分析,提出適合低矮路堤交通荷載模型的模擬方法。分析了交通荷載的動(dòng)力特性和道路材料的動(dòng)力特性,進(jìn)行了交通荷載作用快速路低矮路堤路基響應(yīng)的數(shù)值分析。通過(guò)三維道路計(jì)算有限元模型分析了交通荷載對(duì)路基工后沉降的影響。根據(jù)數(shù)值分析的研究成果和低矮路堤特點(diǎn),展開(kāi)了路堤高度影響因素、合理降低路堤高度的研究,提出了低矮路堤設(shè)計(jì)需要遵循的原則和設(shè)計(jì)流程,并從技術(shù)措施、構(gòu)造措施兩個(gè)方面闡述了降低路堤高度可以采用的具體設(shè)計(jì)方法。
[Abstract]:At present, in the design of expressway, the height of embankment filling is generally high, most of which are between 3-4m.However, there are many disadvantages of high embankment, such as: large amount of soil, large amount of cultivated land, destruction of vegetation, resulting in soil erosion, large settlement, easy to be washed and collapsed by heavy rain, increasing the amount of slope protection and reinforcement works, high cost, high difficulty in construction,Long construction period, serious damage to the natural landscape, can not meet the visual, psychological comfort, safety needs.In view of this situation, it is necessary to solve the problems of urban expressway construction in the future by adopting low embankment and shallow cutting scheme, saving cultivated land resources and taking the road of sustainable development.This paper begins with the current situation of research on the influence of low embankment under traffic load. Through the theoretical study of traffic load, the characteristics and simulation method of vehicle load are analyzed, and a simulation method suitable for traffic load model of low embankment is put forward.The dynamic characteristics of traffic load and the dynamic characteristics of road materials are analyzed, and the response of low embankment subgrade of expressway under traffic load is analyzed numerically.The influence of traffic load on the settlement of roadbed after construction is analyzed by the finite element model of 3D road calculation.According to the research results of numerical analysis and the characteristics of low embankment, the influencing factors of embankment height and the reasonable reduction of embankment height are studied. The principles and design flow of low embankment design are put forward, and the technical measures are given.The concrete design methods for reducing the height of embankment are expounded in two aspects of structural measures.
【學(xué)位授予單位】：河北工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：U416.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

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本文編號(hào)：1763024