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大量复杂、繁琐的路线设计工作逐渐由电子计算机代替后,不但减轻了劳动强度,缩短了设计周期,而且实现了路线设计的优化处理,成为路线设计的一次突破性变革。在路线优化设计程序中,纵曲线变坡点的优化选择及土石方计算是两个关键问题。路线的优化最终评价又往往是以土石方数量及其他有关因素决定的。因而,能否准确地计算土石方数量,正确地反映工程设计的实际情况,并为设计、施工单位接受,成为路线优化设计程序成败的关键。在公路电算系统中,用于路基设计和土石方计算的地形资料,可以由数字化地面模
After a large number of complex and cumbersome route design work was gradually replaced by electronic computers, it not only reduced labor intensity and shortened the design cycle, but also realized the optimization of route design and became a breakthrough change in route design. In the course of route optimization design, the optimization of pitch point change and earthwork calculation are two key problems. The final evaluation of route optimization is often based on the number of earth and stone and other relevant factors. Therefore, the accurate calculation of the amount of earthwork, the correct reflection of the actual situation of engineering design, and design and construction units to accept, become the key to the success or failure of the route optimization design process. In the highway computing system, the terrain data used for roadbed design and earthwork calculation can be digitized by the ground mode