基于Voronoi图的区域场地类别边界划分

Division of Site Classification Boundary Based on Voronoi Diagram

以四川西昌市区和天津滨海地区为例,利用Voronoi图界定了每个钻孔的空间影响范围,最终划分了不同场地类别的边界,解决了钻孔数量少和人工划分的主观性,直观地反映了区域的场地分界情况,是Voronoi图在工程地震学场地类别划分方面运用的一次尝试,为区域的场地类别划分提供了一种新的思路,同时,也为该地区的区域抗震规划和抗震设防提供了半定量的参考。

Voronoi diagram is a basic data structure about space partitioning.Taking Xichang city and Tianjin coastal area as an example,this paper defines the influence range of each borehole by using Voronoi diagram,and finally divides the boundary of different types of site classification.This solved the problem of the number of holes and the artificial division of the subjective,and intuitively reflects regional boundary conditions.The study is a beneficial attempt of the using of the Voronoi diagram in engineering seismology site classification,and provides a new way of thinking for the area of site classification,at the same time,it provides an semi-quantitative reference for the area of regional seismic planning and seismic fortification.