公路平纵线形施工偏差计算机辅助检测方法

提出了与公路中线检测点对应的公路设计中线点的判定准则以及寻找对应设计中线点的算法即步长压缩摆动趋近法;分析论证了基于判定准则及步长压缩摆动趋近法,即将公路平面线形偏差分解为垂直于路线方向的横向偏差以及沿路线方向的纵向偏差;讨论了步长压缩摆动趋近法与公路平面线形计算机辅助计算结合中的公路平曲线类型编码以及平面线形曲线段的区间判别等问题.依据路基设计高程种类、超高旋转方式及超高缓和各阶段,公路中线路面高程与路基设计高程有所不同,对公路纵断面检测偏差进行了修正.在此基础上构建了公路平纵线形施工偏差计算机辅助检测方法,并予以应用.

Computer-aided Method of Survey Deviation Detection on Highway's Plane and Vertical Section Line

Decision for correspondence between check point of highway's centre line and design point, and the algorithm of swinging approach on compressible size step that can be used to find design point are put forward. Based on the rule and the algorithm, the deviation of plane line can be decomposed into lateral deviation and longitudinal deviation based on route's direction. In combining the algorithm of swinging approach on compressible size step with the computer-aided calculation of highway's plane alignment, the code of types of highway's plane line and the determine of curve interval were discussed. According to the type of subgrade design elevation, pattern of superelevation rotation and stage of superelevation relaxation, there is some deference between subgrade design elevation and centre-pavement elevation. Therefore, it is necessary to correct survey deviation of detection on highway's vertical section line. The computer-aided method of survey deviation detection on highway's plane and vertical section line was set up. Some calculations of its application in a highway survey software were provided.