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在路线测量时,碰到虚交点角桩,都要查三角函数表或对数表来计算甲乙边长。由于查表次数多、手续比较麻繁,所以计算容易出错。现在提出用曲线表计算虚交点角桩的甲乙边长的方法供大家参考。举例: 1.已知:甲乙点的偏角及间距,如图。 2.当半径10公尺时,切线长:乙点切线长6.20(+/甲乙点切线之和 12.53公尺甲点切线长 6.33公尺 3.求间距为15.57公尺时的复曲线半径:R_复=15.57×10/12.53=12.41公尺 4.当半径为12.41公尺时,甲乙点的切线长: T_甲=6.33×12.41=7.85公尺 T_乙=6.20×12.41=7.69公尺 5.求УТИ31偏角为128°17′(64°43′+63°34′)。R_复=12.41公尺时的切线长查R=10公尺偏角128°17′T.=20.63公尺 T=20.63×12.41=25.58公尺
In the course of measurement, hit the virtual corner point pile, should check the trigonometric function table or logarithm table to calculate the length of side. Due to the number of table lookups, more complicated procedure, so easy to make mistakes. It is now proposed to use the curve table to calculate the virtual corner point pile B and B side of the method for your reference. Example: 1. Known: A point B angle and spacing, as shown. 2. When the radius of 10 meters, the tangent length: B point tangent length 6.20 (+ / A and B point tangent of 12.53 meters at a point tangent length of 6.33 meters 3. Find the distance of 15.57 meters radius of the complex curve: R _ Complex = 15.57 × 10 / 12.53 = 12.41 meters 4. When the radius is 12.41 meters, the tangent length of point A and B is T_ A = 6.33 × 12.41 = 7.85 meters T_ B = 6.20 × 12.41 = 7.69 meters 5. Find УТИ 31 Declination angle of 128 ° 17 ’(64 ° 43’ + 63 ° 34 ’). R_ 复 = 12.41 meters when the tangential length R = 10 meters Declination 128 ° 17’T. = 20.63 Meter T = 20.63 × 12.41 = 25.58 meters