本文選題：高速公路 + 路橋過渡段��； 參考：《北京交通大學(xué)》2014年碩士論文

【摘要】：隨著科技的不斷發(fā)展,越南高速公路也得到前所未有的發(fā)展,方便、舒適、快捷已經(jīng)成為目前高速公路的最大優(yōu)點(diǎn)。唯一美中不足的是高速公路路橋過渡段不均勻沉降得不到很好的處理,時(shí)常出現(xiàn)跳車現(xiàn)象,從而影響行車速度和乘客的舒適程度,也為行車安全帶來很大隱患。路橋過渡段是設(shè)計(jì)和施工中的薄弱環(huán)節(jié),但長期以來,對采用哪種過渡段設(shè)置方法較為合理,至今仍未達(dá)成完全的共識。 本論文通過討論了越南公路交通系統(tǒng)和路基以及公路路橋過渡段的現(xiàn)狀與缺點(diǎn),針對越南胡志明市-中梁高速公路位于KM27+260的過渡段,分析橋頭跳車的現(xiàn)象和原因,并使用ABAQUS/CAE為工作平臺建立了數(shù)值模型,進(jìn)行靜態(tài)模擬分析與動(dòng)態(tài)模擬分析,主要研究分析影響路橋過渡段平順性的主要因素,并己取得了一些有價(jià)值的結(jié)論。通過比較和分析不同過渡段填土的彈性模量參數(shù)的彎沉結(jié)果,總結(jié)了過渡段沉降的發(fā)展規(guī)律,分析了如何設(shè)計(jì)最優(yōu)的倒梯形形式的過渡段,從而減小差異沉降,消除橋頭跳車現(xiàn)象。 最后,對該路橋過渡段在越南特有的強(qiáng)降雨條件下進(jìn)行降雨入滲對路基邊坡的穩(wěn)定性分析。這些研究結(jié)果將對越南高速公路過渡段設(shè)計(jì)有借鑒的意義。
[Abstract]:With the continuous development of science and technology, Vietnam highway has been unprecedented development, convenience, comfort, speed has become the greatest advantage of the highway. The only drawback is that the uneven settlement of the transition section of the highway and bridge is not well dealt with, and the phenomenon of jumping often occurs, which affects the driving speed and the comfort degree of the passengers, and also brings great hidden trouble to the driving safety. The transition section of road and bridge is a weak link in design and construction, but for a long time, it has not reached a complete consensus as to which method to set up the transition section is more reasonable. This paper discusses the present situation and shortcomings of highway traffic system, roadbed and highway bridge transition section in Vietnam. Aiming at the transition section of Ho Chi Minh City to Zhongliang Expressway located in KM27 260, this paper analyzes the phenomenon and reasons of bridge head jumping. A numerical model based on ABAQUS/CAE is established for static simulation analysis and dynamic simulation analysis. The main factors affecting the ride comfort of the transition section are studied and some valuable conclusions have been obtained. By comparing and analyzing the deflection results of the elastic modulus parameters of the different transition sections, the development law of the settlement of the transition section is summarized, and how to design the optimal transition section with the inverted trapezoid form is analyzed to reduce the differential settlement. Eliminate bridge jump phenomenon. Finally, the stability of roadbed slope is analyzed under the condition of strong rainfall in Vietnam. These results will be useful for the design of highway transition section in Vietnam.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U416.1

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