场地平整竖向设计中重心定位的力学方法解算

THE MECHANICAL SOLUTION FOR LOCATING THE CENTER OF GRAVITY IN LEVELING FIELDS WITH VERTICAL DESIGN

场地平整内业计算中,当场地图形包括若干矩形而成非对称图形时,重心定位难以定准,故要反复计算,否则不能达到填挖平衡。为了简化计算,本文根据力学原理,阐述了平整场地与平面直角坐标的关系,求得了不对称图形重心(零点)的精确定位方法和计算公式。

In the office computation for leveling fields, when the figure of the fields consists of many rectangles and appears unsymmetrical, the l-ocation of the center of gravity can not be determined accurately, so the computation must be repeated again and again, otherwise we can not obtain the balance of cuts and fills. In order to simplify the computation, this thesis expounds the relations between the fields and the rectangular plane coordinates. And the method of finding out the accurate location of the center of gravity (zero point) of unsymmetrical figures and its computation formula according to mechanical principle are suggested. In the work of leveling fields, it is very important that the computation of the balance of cuts and fills must be simple.