某雙向四車道高速公路平面設(shè)計案例目錄TOC\o"1-3"\h\u2433某雙向四車道高速公路平面設(shè)計案例 1217861.1平面設(shè)計概述 1250001.2平面線形設(shè)計的基本要求 1320301.3直線 14791.4圓曲線 2119771.4.1最小半徑 2231.4.2橫向力系數(shù)μ 2173391.4.3最大超高值ih（max） 2212761.5緩和曲線 2213131.5.1作用 2205881.5.2緩和曲線的形式 217401.5.3緩和曲線最小長度 297161.6平曲線計算： 3240171.6.1交點坐標(biāo)： 386211.6.2平曲線幾何要素計算 5208451.6.3主點樁號計算 8223031.7逐樁坐標(biāo)表 91.1平面設(shè)計概述道路中心線在水平方向上的投影就是道路的平面線形。直線、圓曲線和緩和曲線是道路線形三個要素。在平面線形設(shè)計時，為保證行車的安全性和舒適性，設(shè)計者應(yīng)結(jié)合實際地形，遵循平面線形設(shè)計的原則，保證三個要素的大小均衡，合理布設(shè)平面線形。1.2平面線形設(shè)計的基本要求平面線形應(yīng)注意連貫均衡、相互連續(xù)，與地形能夠有很好的結(jié)合適應(yīng)，與周圍環(huán)境相互平衡協(xié)調(diào)。構(gòu)造物和附屬設(shè)施的聯(lián)系應(yīng)該在線形設(shè)計考慮范圍之內(nèi)。著重觀察縱斷面線形的結(jié)合和曲線間的組合。各個等級公路不管轉(zhuǎn)角大小都應(yīng)該設(shè)計曲線，并應(yīng)該選取相對比較大的圓曲線半徑，轉(zhuǎn)角比較小的時候，不能有比較短的圓曲線。1.3直線1.最大長度限制直線距離過長，駕駛過程枯燥，再加上沿途景觀比較單調(diào)，易引發(fā)交通事故，故直線的最大長度應(yīng)有所限制。20V=2400m2.最小長度限制如果兩圓曲線間的直線段長度過短，駕駛員由一個彎道駛?cè)肓硪粋€彎道時，不能正確地進行駕駛操作，行車的安全得不到保證。所以針對不同的曲線組合形式，曲線間的直線長度有著不同限制。反向/同向曲線中2V=240米/6V=720米。1.4圓曲線1.4.1最小半徑技術(shù)指標(biāo)高速公路一般最小半徑1000m極限最小半徑810m不設(shè)超高最小半徑路拱≤2.0%5500m路拱≥2.0%7500m當(dāng)圓曲線巨大時可以不設(shè)超高直接設(shè)置路拱。1.4.2橫向力系數(shù)μ橫向力有很大時，會有很大的危害，嚴(yán)重影響到駕駛員在駕駛過程中的安全問題，具體表現(xiàn)在下面幾個方面：1.μ要小于橫向摩阻系數(shù)φh，要求車子的輪胎不能過度磨損；2.駕駛員駕駛技術(shù)要過硬，要能夠保持好方向盤，否則會被影響駕駛方向操作的困難；3.會加大汽車的油耗，增加經(jīng)濟成本；4.會影響到副駕駛或者后座乘客的體驗，增加緊張感。一般μ值在0.10~0.16為好。1.4.3最大超高值ih（max）道路上面有各種各樣的車輛在行駛，車輛的行駛速度也不盡相同，有的車速快，有的車速慢，我們不僅要滿足慢車的行駛要求，更要滿足快車的行駛要求。如果ih過大，則有可能發(fā)生車輛沿著最大合成坡度下滑的結(jié)果發(fā)生，造成不必要的危險發(fā)生，所以我們對ih有個最大的限度要求，即ih（max）≤φw。1.5緩和曲線1.5.1作用讓車輛在行駛過程中，軌跡變化連續(xù)，行車舒適。在行駛過程中，離心力也隨著變化，能夠讓乘客感到舒服。讓車輛在行車過程中更加的平穩(wěn)，有利于安全。增加線路的美觀程度。1.5.2緩和曲線的形式因為回旋線簡單方便的原因。一般采用回旋線。1.5.3緩和曲線最小長度取100m。1.6平曲線計算：1.6.1交點坐標(biāo)：1.方位角計算①起點和交點1坐標(biāo)增量：Dx＝3266954.8－3267711.4＝-756.600Dy＝39650371.2－39649018.8＝1352.400交點間距：S=DX2+DY2象限角：θ=arctg因為Dx＜0，Dy＞0，故方位角A1=180°-60.775°=119.225°=119°13′30.0″②交點1和交點2坐標(biāo)增量：Dx＝3267577.213－3266954.8＝622.413Dy＝39651071.851－39650371.2＝700.651交點間距：S=DX2+DY2象限角：θ=arctg因為Dx＞0，Dy＞0，故方位角A2=48.384°=48°23′02.4″③交點2和終點坐標(biāo)增量：Dx＝3268684.596－3267577.213＝1107.382Dy＝39650808.772－39651071.851＝-261.078交點間距：S=DX2+DY2象限角：θ=arctg因為Dx＞0，Dy＜0，故方位角A3=360°-11.364°=346.636°=346°38′09.6″2.計算轉(zhuǎn)角值得：α1=A2-A1=48°23′02.4″-119°13′30.0″=-70°50′27.6″（左）α2=A3-A2=346°38′09.6″-48°23′02.4″=298°15′07.2″（右）結(jié)果如下：交點號交點坐標(biāo)交點樁號轉(zhuǎn)角值直線長度及方向N(X)E(Y)直線

段長(m)交點

間距(m)計算

方位角12345678JD03267711.439649018.8K0+000855.6591549.655119°13′29.4″JD13266954.839650371.2K1+549.65570°50′26.4″(Z)0937.18248°23′03″JD23267577.21439651071.85K2+350.43261°44′51.1″(Z)525.3391138.204346°38′09.9″JD33268684.59639650808.77K3+400.87500001.6.2平曲線幾何要素計算如圖所示：JD1樁號為K1+549.655時速120km/h，圓曲線半徑為700m，緩和曲線長度為400m，轉(zhuǎn)角為70°50′26.4″(Z)計算如下：切線增長值：q=內(nèi)移值：p=緩和曲線角：β切線長：

T=(R+p)平曲線長：

L=(圓曲線長：Ly=L?2Ls=1265.482?2?400=465.482m外距：

E=(R+p)校正值：J=2T?L=2?704.047?1265.482=142.612m經(jīng)檢驗無誤JD2交點樁號為K2+350.432，時速120km/h，圓曲線半徑為700m，緩和曲線長度為400m，轉(zhuǎn)角為61°44′51.1″(Z)計算如下：切線增長值：q=內(nèi)移值：p=緩和曲線角：β切線長：

T=(R+p)平曲線長：

L=(圓曲線長：Ly=L?2Ls=1154.295?2?400=465.482m外距：

E=(R+p)校正值：J=2T?L=2?623.642?1154.295=92.989m經(jīng)檢驗無誤。如圖匯集圖表交點R(m)α(°)Ls(m)q(m)p(m)β(°)L(m)T(m)E(m)J(m)JD170070.841400199.4569.49316.3701265.482704.045170.626142.608JD270061.748400199.4569.49316.3701154.395621.642126.62892.8891.6.3主點樁號計算1.JD1交點樁號為K1+549.655，計算如下ZH＝JD1－T＝（K1+549.655）－704.045＝K0+855.659HY＝ZH＋Ls＝（K0+855.659）＋400＝K1+255.659YH＝HY＋Ly＝（K1+255.659）＋465.482＝K1+921.141HZ＝Y(jié)H＋Ls＝（K1+921.141）＋400＝K1+921.141QZ＝HZ－L/2＝（K1+921.141）＋1265.482/2＝K1+588.400JD1＝QZ＋J/2＝（K1+588.400）＋142.608/2＝K1+549.6552.JD2交點樁號為K2+350.432，計算如下ZH＝JD2－T＝（K2+350.432）－623.642＝K1+921.141HY＝ZH＋Ls＝（K1+921.141）＋400＝K1+921.141YH＝HY＋Ly＝（K1+921.141）＋354.395＝K2+475.536HZ＝Y(jié)H＋Ls＝（K2+475.536）＋400＝K2+875.536QZ＝HZ－L/2＝（K2+875.536）＋1154.395/2＝K2+198.339JD2＝QZ＋J/2＝（K2+198.339）＋92.889/2＝K2+350.432經(jīng)檢驗，各交點樁號無誤。匯集如下表：交點號交點樁號曲線主點樁號第一緩和曲線第一緩和曲線終曲線中點第二緩和曲線起第二緩和曲線起點點或圓曲線起點點或圓曲線終點終點1234567起點K0+000JD1K1+549.655K0+855.659K1+255.659K1+588.400K1+921.1410JD2K2+350.4320K1+921.141K2+198.339K2+475.536K2+875.536終點K3+400.8751.7逐樁坐標(biāo)表樁號坐標(biāo)樁號坐標(biāo)N(X)E(Y)N(X)E(Y)K0+0003267711.439649018.8K0+8003267320.8139649716.97K0+0203267701.63539649036.25K0+8203267311.04539649734.42K0+0403267691.8739649053.71K0+8403267301.2839649751.88K0+0603267682.10639649071.16K0+855.6593267293.63539649765.54K0+0803267672.34139649088.62K0+8603267291.51639649769.33K0+1003267662.57639649106.07K0+8803267281.75839649786.79K0+1203267652.81139649123.53K0+9003267272.03139649804.26K0+1403267643.04739649140.98K0+9203267262.3639649821.77K0+1603267633.28239649158.43K0+9403267252.76939649839.32K0+1803267623.51739649175.89K0+9603267243.28439649856.93K0+2003267613.75239649193.34K0+9803267233.9339649874.61K0+2203267603.98839649210.8K1+0003267224.73439649892.37K0+2403267594.22339649228.25K1+0203267215.72139649910.22K0+2603267584.45839649245.7K1+0403267206.91939649928.18K0+2803267574.69339649263.16K1+0603267198.35439649946.25K0+3003267564.92939649280.61K1+0803267190.05339649964.45K0+3203267555.16439649298.07K1+1003267182.04639649982.78K0+3403267545.39939649315.52K1+1203267174.35939650001.24K0+3603267535.63439649332.98K1+1403267167.02239650019.84K0+3803267525.8739649350.43K1+1603267160.06539650038.59K0+4003267516.10539649367.88K1+1803267153.51739650057.49K0+4203267506.3439649385.34K1+2003267147.40839650076.54K0+4403267496.57539649402.79K1+2203267141.7739650095.72K0+4603267486.81139649420.25K1+2403267136.63339650115.05K0+4803267477.04639649437.7K1+255.6593267132.98139650130.28K0+5003267467.28139649455.16K1+2603267132.02839650134.51K0+5203267457.51639649472.61K1+2803267127.97939650154.1K0+5403267447.75239649490.06K1+3003267124.49139650173.79K0+5603267437.98739649507.52K1+3203267121.56739650193.58K0+5803267428.22239649524.97K1+3403267119.2139650213.44K0+6003267418.45739649542.43K1+3603267117.42139650233.36K0+6203267408.69339649559.88K1+3803267116.20139650253.32K0+6403267398.92839649577.33K1+4003267115.55339650273.31K0+6603267389.16339649594.79K1+4203267115.47539650293.31K0+6803267379.39839649612.24K1+4403267115.96939650313.3K0+7003267369.63439649629.7K1+4603267117.03439650333.27K0+7203267359.86939649647.15K1+4803267118.66939650353.2K0+7403267350.10439649664.61K1+5003267120.87339650373.08K0+7603267340.33939649682.06K1+5203267123.64439650392.89K0+7803267330.57439649699.51K1+5403267126.97939650412.61樁號坐標(biāo)樁號坐標(biāo)N(X)E(Y)N(X)E(Y)K1+6003267140.34439650471.08K2+3603267664.3739650969.52K1+6203267145.90739650490.29K2+3803267683.95839650973.56K1+6403267152.01639650509.33K2+4003267703.65339650977.03K1+6603267158.66639650528.19K2+4203267723.43939650979.94K1+6803267165.85339650546.86K2+4403267743.30139650982.29K1+7003267173.56939650565.31K2+4603267763.22139650984.06K1+7203267181.8139650583.53K2+475.5363267778.72539650985.05K1+7403267190.56839650601.51K2+480326778327K1+7603267199.83639650619.23K2+500326780392K1+7803267209.60739650636.68K2+520326782302K1+8003267219.87239650653.85K2+5403267843.16739650985.62K1+8203267230.62339650670.71K2+560326786375K1+8403267241.85139650687.26K2+5803267883.10339650983.42K1+8603267253.54839650703.48K2+6003267903.02639650981.67K1+8803267265.70339650719.36K2+6203267922.91139650979.53K1+9003267278.30839650734.89K2+6403267942.75339650977.02K1+9203267291.3539650750.05K2+6603267962.55139650974.18K1+921.1413267292.10739650750.91K2+6803267982.30239650971.04K1+9403267304.8239650764.84K2+7003268002.00839650967.63K1+9603267318.70839650779.23K2+7203268021.66939650963.96K1+980326733339650793.22K2+7403268041.28939650960.08K2+0003267347.68739650806.79K2+7603268060.8739650956.01K2+0203267362.75539650819.94K2+7803268080.41639650951.77K2+0403267378.19339650832.66K2+8003268099.93439650947.41K2+0603267393.98739650844.92K2+8203268119.42739650942.93K2+0803267410.12639650856.74K2+8403268138.90339650938.38K2+1003267426.59639650868.08K2+8603268158.36739650933.79K2+1203267443.38239650878.95K2+4003267703.65339650977.03K2+1403267460.47339650889.34K2+4203267723.43939650979.94K2+1603267477.85339650899.23K2+4403267743.30139650982.29K2+1803267495.50939650908.63K2+4603267763.22139650984.06K2+198.3393267511.92939650916.79K2+475.5363267778.72539650985.05K2+2003267513.42639650917.51K2+480326778327K2+2203267531.5939650925.88K2+500326780392K2+2403267549.98539650933.73K2+520326782302K2+2603267568.59739650941.05K2+5403267843.16739650985.62K2+2803267587.41139650947.83K2+560326786375K2+3003267606.4139650954.08K2+5803267883.10339650983.42K2+3203267625.58139650959.78K2+6003267903.02639650981.67K2+3403267644.90639650964.92K2+6203267922.91139650979.53樁號坐標(biāo)樁號坐標(biāo)N(X)E(Y)N(X)E(Y)K1+6003267140.34439650471.08K2+3603267664.3739650969.52K1+6203267145.90739650490.29K2+3803267683.95839650973.56K1+6403267152.01639650509.33K2+4003267703.65339650977.03K1+6603267158.66639650528.19K2+4203267723.43939650979.94K1+6803267165.85339650546.86K2+4403267743.30139650982.29K1+7003267173.56939650565.31K2+4603267763.22139650984.06K1+7203267181.8139650583.53K2+475.5363267778.72539650985.05K1+7403267190.56839650601.51K2+480326778327K1+7603267199.83639650619.23K2+500326780392K1+7803267209.60739650636.68K2+520326782302K1+8003267219.87239650653.85K2+5403267843.16739650985.62K1+8203267230.62339650670.71K2+560326786375K1+8403267241.85139650687.26K2+5803267883.10339650983.42K1+8603267253.54839650703.48K2+6003267903.02639650981.67K1+8803267265.70339650719.36K2+6203267922.91139650979.53K1+9003267278.30839650734.89K2+6403267942.75339650977.02K1+9203267291.3539650750.05K2+6603267962.55139650974.18K1+921.1413267292.10739650750.91K2+6803267982.30239650971.04K1+9403267304.8239650764.84K2+7003268002.00839650967.63K1+9603267318.70839650779.23K2+7203268021.66939650963.96K1+980326733339650793.22K2+7403268041.28939650960.08K2+0003267347.68739650806.79K2+7603268060.8739650956.01K2+0203267362.75539650819.94K2+7803268080.41639650951.77K2+0403267378.19339650832.66K2+8003268099.93439650947.41K2+0603267393.98739650844.92K2+8203268119.42739650942.93K2+0803267410.12639650856.74K2+8403268138.90339650938.38K2+1003267426.59639650868.08K2+8603268158.36739650933.79K2+1203267443.38239650878.95K2+4003267703.65339650977.03K2+1403267460.47339650889.34K2+4203267723.43939650979.94K2+1603267477.85339650899.23K2+4403267743.30139650982.29K2+1803267495.50939650908.63K2+4603267763.22139650984.06K2+198.3393267511.92939650916.79K2+475.5363267778.72539650985.05K2+2003267513.42639650917.51K2+480326778327K2+2203267531.5939650925.88K2+500326780392K2+2403267549.98539650933.73K2+520326782302K2+2603267568.59739650941.05K2+5403267843.16739650985.62K2+2803267587.41139650947.83K2+560326786375K2+3003267606.4139650954.08K2+5803267883.10339650983.42K2+3203267625.58139650959.78K2+6003267903.02639650981.67K2+3403267644.90639650964.92K2+6203267922.91139650979.53樁號坐標(biāo)樁號坐標(biāo)N(X)E(Y)N(X)E(Y)K2+6403267942.75339650977.02K3+0203268314.03539650896.81K2+6603267962.55139650974.18K3+0403268333.49339650892.18K2+6803267982.30239650971.04K3+0603268352.95239650887.56K2+7003268002.00839650967.63K3+0803268372.4139650882.94K2+7203268021.66939650963.96K3+1003268391.86939650878.31K2+7403268041.28939650960.08K3+1203268411.32739650873.69K2+7603268060.8739650956.01K3+1403268430.78639650869.07K2+7803268080.41639650951.77K3+1603268450.24439650864.45