The paper mainly discusses the auto creating technology of topological spatial relationship, on the basis of which a crunode matching algorithm is brought forward to create the topological relation of points and lines, and the topological relationship could be set up for points, lines and polygons based on grid index.

Moreover,an initializing strategy using the extended bounding influence region depending on the grid index is proposed.

The conception of spatial raster index is also applied.

Based on an incremental insertion algorithm for creating of Delaunay triangulations,an improved algorithm of spatial raster index was introduced to judge which triangle the point was inserted in and triangle adjacency was fully used in triangle retrieval.

Data Analysis on Standard Parameters of the Rope;

Studies on ultra-high molecular weight polyethylene fiber ropes for fishing gear;

The structure,physical properties,impace resistance,fire protection of it were comparaed with other fibers are introduced in this paper,and the application of it in composites,bodyarmor,fireproofing,ropes and advanced fabrics are also summarized.

Anchor is one of the most important components of cable for bridge.

On the basis of analysis of the fluid drag acting on a suspended cable subjected to transverse fluid excitation, an expression is established for the fluid forces applied on the cable.

The fluid drag on the suspended cable subject to transverse fluid exiction is analyzed and the dynamic equation of cable is established in the case of small ration of sag-to-span.