【正文】 s endachieved 890,000 kilometers, the average increased approximately30,000 kilometers every year, the road density achieved 9. 3 kilometers hundred square kilometers. After the reform and opening up road infrastructure building and achievements. After the reform and opening up, the national economy continued its rapid development, road transport demand is robust growth, Highway infrastructure construction began a historic changes, and its main features : Highway construction of the central and local levels, the attention of the government, If you want to get rich, the first road, Highway construction of the importance of gradually recognized by the whole society. In the basis of unified planning, started a program of the National Highway infrastructure construction, the early 1980s and late 1980s, national trunk highway network and the National Road Route Planning System has drawn up and implemented, Highway building with a clear overall goals and milestones. Highway construction continued to expand the overall size, while focusing on the strengthening of quality improvement, Expressway and other highgrade highways to develop rapidly. The country39。s intermediate stages our country starts to the QinghaiTibet Highway to carry on the technological transformations, the 8039。s the later period, is the adaption economy develops and develops the border area the need, our country starts the largescale construction to lead to the border area and the mountainous area road, has constructed the ChengduLhasa Highway, the QinghaiTibet Highway one after another, and in the southeast coast, northeast and southwest the local construction national defense highway, the road course rapid growth, in 1959 amounted to more than500,000 kilometers.The 6039。s modern highway development has undergone the following two stages ： the reform and opening up of road infrastructure building The old China39。s road constructions are facing severe challenges. In the national economy continued its rapid growth and urbanization process will continue to accelerate the process, various cities facing redevelopment, transformation, expansion and replanning, and road infrastructure building is the present and future urban development. Highway understanding of the history and development of the status quo, for how we sustained development of the national economy based on the strategic goals the development and planning of the new era of highway construction in the sustainable development strategy is very important. 1. A modern highway39。Key Words: bridges and Highway building roads After the reform and opening up, with the national economy. Stability. Highspeed development, road construction boom upward, is in an unprecedented upsurge in the building. Taking a panoramic view of China39。s democratic revolution, the great forerunner Dr. Sun Yatsen once said : The roads were also the mother of civilization. Pulse also wealth, the concept trial today civilized nations that most country roads. Thus, highway on the national economy. people39。s critical infrastructure, the roads to the development of production, economic prosperity and international exchanges, facilitate people39。 還有文國華書記、王新忠老師、龍瓊老師在我的畢業(yè)設(shè)計(jì)中也給與了我不少指點(diǎn)，他們對學(xué)術(shù)極為尊重，治學(xué)非常嚴(yán)謹(jǐn)，在踏入工作崗位之后，我一定會(huì)尊重自己的職業(yè)，并且也一定會(huì)嚴(yán)格要求自己。在這里要感謝我們本次畢業(yè)設(shè)計(jì)的組長熊焱老師，其次還要感謝帶我們這個(gè)課題的文國華書記和王新忠老師，他們平日里工作繁多，但仍能從百忙中抽出時(shí)間來督促和指導(dǎo)我進(jìn)行設(shè)計(jì)。致 謝本人于2006年到湖南城市學(xué)院學(xué)習(xí)土木工程(交通土建)專業(yè),按正常教學(xué)要求于 （k141+850～k144+450）（副教授）。畢竟，把理論知識用于實(shí)踐才是我們所追求的。不僅僅是學(xué)會(huì)了系統(tǒng)的專業(yè)知識，還學(xué)會(huì)如何做事，用什么態(tài)度去做事。參考文獻(xiàn)[1] JTGB012003 公路工程技術(shù)標(biāo)準(zhǔn)[S]北京， 人民交通出版社；2003[2] JTGD202006 公路路線設(shè)計(jì)規(guī)范[S]北京， 人民交通出版社；2006[3] JTGD302004 公路路基設(shè)計(jì)規(guī)范[S]北京， 人民交通出版社；2004[4] JTJ0122002 公路水泥混凝土路面設(shè)計(jì)規(guī)范[S] 人民交通出版社；2002[5] JTJD502006 公路瀝青路面設(shè)計(jì)規(guī)范[S]北京， 人民交通出版社；2006[6] JTJF102006 公路路基施工技術(shù)規(guī)范[S]北京， 人民交通出版社；2006[7] JTJ01897 公路排水設(shè)計(jì)規(guī)范[S]北京， 人民交通出版社；1997[8] 鄧學(xué)均 路基路面工程[M]北京， 人民交通出版社；2002[9] JTGD632007 公路橋涵地基與基礎(chǔ)設(shè)計(jì)規(guī)范[S] 人民交通出版社；2007[10] JTG/TD65042007公路涵洞設(shè)計(jì)細(xì)則[S]北京， 人民交通出版社；2007結(jié)束語一晃眼，兩個(gè)多月的設(shè)計(jì)就過去了，本人也利用了大學(xué)四年所學(xué)的知識，在老師們的悉心指導(dǎo)以及自己的精心設(shè)計(jì)下，終于完成了南寧至百色高速公路路基路面綜合設(shè)計(jì)K141+850K144450段，設(shè)計(jì)中不當(dāng)之處敬請專家老師和同學(xué)們指正。經(jīng)兩種路面結(jié)構(gòu)的比較和當(dāng)?shù)刈匀画h(huán)境的結(jié)合，加上高速公路的要求，最終選擇瀝青混凝土路面結(jié)構(gòu)。瀝青路面具有表面平整，無接縫，行車舒適耐磨振動(dòng)小，噪音低，施工期短，養(yǎng)護(hù)維修簡便，適宜于分期修建等優(yōu)點(diǎn)。確定可靠度系數(shù)為=.因而，所選普通混凝土面層厚度（）可以承受設(shè)計(jì)基準(zhǔn)期內(nèi)荷載應(yīng)力和溫度應(yīng)力的綜合疲勞作用。板長5m，l/r=，查規(guī)范得普通混凝土板厚h=。根據(jù)公路等級，由規(guī)范可知，考慮偏載和動(dòng)載等因素對路面疲勞損壞影響的綜合系數(shù)。結(jié)構(gòu)層如下：水泥混凝土面層26cmEc=31GPa石灰粉煤灰穩(wěn)定粒料基層18cmE1=1300MPa石灰粉煤灰墊層15cmE2=600MPa計(jì)算基層頂面當(dāng)量回彈模量如下：普通混凝土面層的相對剛度半徑計(jì)算：荷載疲勞應(yīng)力計(jì)算：標(biāo)準(zhǔn)軸載在臨界荷位處產(chǎn)生的荷載應(yīng)力計(jì)算為因縱縫為設(shè)拉桿平縫，接縫傳荷能力的應(yīng)力折減系數(shù)。1） 路面材料參數(shù)確定 查規(guī)范可知：，相應(yīng)的彎拉彈性模量標(biāo)準(zhǔn)值為31GPa。 方案三：1）普通混凝土面層厚度為26 cm；，基層選用石灰粉煤灰穩(wěn)定粒料，厚18cm；墊層用低劑量無機(jī)結(jié)合料穩(wěn)定土，厚15 cm；。由規(guī)范可知，高速公路的安全等級為一級，目標(biāo)可靠度為95%，相應(yīng)的變異水平等級為低。普通混凝土面層板長4m，l/=，查規(guī)范可知，混凝土面層。根據(jù)公路等級，由規(guī)范可知，考慮偏載和動(dòng)載等因素對路面疲勞損壞影響的綜合系數(shù)。復(fù)合式混凝土面層截面總剛度計(jì)算：復(fù)合式混凝土面層的相對剛度半徑計(jì)算：標(biāo)準(zhǔn)軸載在普通混凝土面層臨界荷位處產(chǎn)生的荷載應(yīng)力計(jì)算：普通混凝土面層，因縱縫為設(shè)拉桿平縫，接縫傳荷能力的應(yīng)力折減系數(shù)；碾壓混凝土基層不設(shè)縱縫，不考慮接縫傳荷能力的應(yīng)力折減系數(shù)。結(jié)構(gòu)層如下：普通混凝土面層24cm31GPa碾壓混凝土基層16cm27GPa水泥穩(wěn)定粒料底基層18cm1300MPa無機(jī)結(jié)合料穩(wěn)定土墊層15cm600MPa計(jì)算基層頂面當(dāng)量回彈模量如下：荷載疲勞應(yīng)力計(jì)算：普通混凝土面層與碾壓混凝土基層組成分離式復(fù)合式面層。水泥混凝土上面層板的平面尺寸長為4m、寬從中央分隔帶至路肩依次為4m、4m；縱縫為設(shè)拉桿平縫，橫縫為設(shè)傳力桿的假縫。確定可靠度系數(shù)為=.因而，所選普通混凝土面層厚度（）可以承受設(shè)計(jì)基準(zhǔn)期內(nèi)荷載應(yīng)力和溫度應(yīng)力的綜合疲勞作用。板長5m，l/r=，查規(guī)范得普通混凝土板厚h=。根據(jù)公路等級，由規(guī)范可知，考慮偏載和動(dòng)載等因素對路面疲勞損壞影響的綜合系數(shù)。結(jié)構(gòu)層如下：水泥混凝土面層27cmEc=31GPa水泥穩(wěn)定粒料基層18cmE1=1300MPa石灰粉煤灰墊層15cmE2=600MPa計(jì)算基層頂面當(dāng)量回彈模量如下：普通混凝土面層的相對剛度半徑計(jì)算：荷載疲勞應(yīng)力計(jì)算：標(biāo)準(zhǔn)軸載在臨界荷位處產(chǎn)生的荷載應(yīng)力計(jì)算為因縱縫為設(shè)拉桿平縫，接縫傳荷能力的應(yīng)力折減系數(shù)。 查規(guī)范可知：，相應(yīng)的彎拉彈性模量標(biāo)準(zhǔn)值為31GPa。c)初擬路面結(jié)構(gòu)橫斷面根據(jù)規(guī)范：等級中級的變異水平為低，根據(jù)高速公路、重交通等級和低級變異水平等級， 方案一：普通混凝土面層厚度為27 cm；，基層選用水泥穩(wěn)定粒料，厚18cm；墊層用低劑量無機(jī)結(jié)合料穩(wěn)定土，厚15 cm；。車型后軸數(shù)大客CA50后軸1700大貨JN150前軸11800后軸1800中貨CAD50后軸69．311800中貨EQ140后軸69．211750日野KB222前軸1800后軸1800拖掛五十鈴前軸60185后軸100850注：軸載小于40KN的軸載作用不計(jì)。車型前軸重后軸重后軸數(shù)后