《道路勘測設計》課件-3-10CAD繪制道路縱斷面圖

道路勘測設計CAD繪制道路縱斷面圖道路縱斷面圖繪圖步驟測量數(shù)據(jù)準備與處理CAD繪制道路縱斷面圖演示測量數(shù)據(jù)準備樁號地面高程平曲線交點樁號曲線長度偏角K1+000639.7JD136K12+31.3230左20640.3JD137K12+9135右31.32640.59JD138K12+143.2726左47.18641.39JD139K12+197.3540右60642JD140K12+30030左73.5642.55JD141K12+387.9845左91642.93

100642.93

已知：樁號和對應的地面高程，相應的平曲線要素，請繪制縱斷面圖，按交通四級重丘區(qū)標準設計該段線路的縱斷面圖。橫向比例1：2000，縱向比例1：200。用A3圖紙出圖。108.5642.93130.12642.57143.27642.32156.42642.69177.57643.79187.61644.42197.35645207.69645.64217.73646.08240647.48260648.26285.63648.2300648.27312.45648.35330648.37350647.04365646.3377.87645.62387.98645.07400644.41408.2643.86430642.45450642.18470642.27K1+490642.54一、測量數(shù)據(jù)準備道路縱斷面圖設計的地面高程測量數(shù)據(jù)準備和平曲線要素準備，如右圖所示。數(shù)據(jù)分析：該段路線從樁號K1+000到K1+490，長度為490m。地面高程的最大值為648.37m，最小值為639.7m，高差為8.67m。每20米一個樁號。按照橫向比例1：2000，縱向比例1：200的比例尺，該段路線長度應為245mm，高差為43.35mm。每20m的路線長度為10mm，高差1m的高度為5mm。平曲線的交點有6個，說明有6個彎道。道路等級為：四級（重丘區(qū)），對應的設計速度為20Km/h?？v坡設計時應選擇對應的參數(shù)。測量數(shù)據(jù)處理二、測量數(shù)據(jù)處理通過Excel把測量數(shù)據(jù)進行處理。1、將樁號按1：2000的比例尺進行換算，如20m樁換算成距離起點10mm；100m樁換算成距離起點50mm。2、將地面高程按1：200的比例尺進行換算。如642m換算成20mm?！荆?42-638）/200=0.02m，638m為標尺的起始值?！?、通過坐標公式得到換算坐標，就可以進行地面線的繪制。樁號樁號換算值（mm）地面高程（m）起始值（m）高差（m）換算值（mm）換算坐標00639.76381.78.50,8.52010640.36382.311.510,11.531.3215.66640.596382.5912.9515.66,12.9547.1823.59641.396383.3916.9523.59,16.95603064263842030,2073.536.75642.556384.5522.7536.75,22.759145.5642.936384.9324.6545.5,24.6510050642.936384.9324.6550,24.65108.554.25642.936384.9324.6554.25,24.65130.1265.06642.576384.5722.8565.06,22.85143.2771.635642.326384.3221.671.635,21.6156.4278.21642.696384.6923.4578.21,23.45177.5788.785643.796385.7928.9588.785,28.95187.6193.805644.426386.4232.193.805,32.1197.3598.67564563873598.675,35207.69103.845645.646387.6438.2103.845,38.2217.73108.865646.086388.0840.4108.865,40.4240120647.486389.4847.4120,47.4260130648.2663810.2651.3130,51.3285.63142.815648.263810.251142.815,51300150648.2763810.2751.35150,51.35312.45156.225648.3563810.3551.75156.225,51.75330165648.3763810.3751.85165,51.85350175647.046389.0445.2175,45.2365182.5646.36388.341.5182.5,41.5377.87188.935645.626387.6238.1188.935,38.1387.98193.99645.076387.0735.35193.99,35.35400200644.416386.4132.05200,32.05408.2204.1643.866385.8629.3204.1,29.3430215642.456384.4522.25215,22.25450225642.186384.1820.9225,20.9470235642.276384.2721.35235,21.35490245642.