侧方交会法交会角的讨论

Discussion on Intersection Angles of Side Intersection

规范规定，前方交会测量中，交会角应限制在３０—１５０；侧方交会测量也沿用这一结论，文献［１］对前方交会测量进行了详尽讨论，指出前方交会的交会角应限制在５５—１５５；文献［３］认为侧方交会亦同样如此，笔者推证后认为：测角侧方交会和测角前方交会的图形强度并不相同，侧方交会的交会角应限制在５４—１３７之间。

Intersection angles of forward intersection are set in between 30° and 150° in the specification. The intersection angles of side intesection are determined on equal basis , too . they were discussed in detail in the literature , and intersection angles were set in between 55°and 155° . The same viewpoint was upheld in the literature .Through theoretical inferring,author considers the difference of graphic strength between side intersection and intersection,and points out that intersection angles of side intersection are in between 54°and 137°.