ARTÍCULO
TITULO

Progressive Collapse of Dual-Line Rivers Based on River Segmentation Considering Cartographic Generalization Rules

Fubing Zhang    
Qun Sun    
Jingzhen Ma    
Zheng Lyu and Bowei Wen    

Resumen

Collapse is a common cartographic generalization operation in multi-scale representation and cascade updating of vector spatial data. During transformation from large- to small-scale, the dual-line river shows progressive collapse from narrow river segment to line. The demand for vector spatial data with various scales is increasing; however, research on the progressive collapse of dual-line rivers is lacking. Therefore, we proposed a progressive collapse method based on vector spatial data. First, based on the skeleton graph of the dual-line river, the narrow and normal river segments are preliminarily segmented by calculating the width of the river. Second, combined with the rules of cartographic generalization, the collapse and exaggeration priority strategies are formulated to determine the handling mode of the river segment. Finally, based on the two strategies, progressive collapse of dual-line rivers is realized by collapse and exaggeration of the river segment. Experimental results demonstrated that the progressive collapse results of the proposed method were scale-driven, and the collapse part had no burr and topology problems, whereas the remaining part was clearly visible. The proposed method can be better applied to progressive collapse of the dual-line river through qualitative and quantitative evaluation with another progressive collapse method.

 Artículos similares

       
 
Zhenyu Xu and Shen Yan    
This article proposes an progressive-collapse mechanism for suspended-dome structures subjected to cable rupture, based on experimental and finite element results. The anti-collapse mechanism can be succinctly described as a node-buckling mechanism: the ... ver más
Revista: Buildings

 
Lian-Meng Chen, Sun-Kai Yan, Zhi-Chao Jiang, Kai-Yu Huang, Ze-Bin Li, Wei Li, Yi-Yi Zhou and Shi-Lin Dong    
This study proposed a framework of optimal design for flexible cable dome structures based on progressive collapse resistance. First, a quantitative evaluation method for nonlinear robustness based on robustness control theory to reflect the structural p... ver más
Revista: Buildings

 
Shahrokh Maalek, Reza Maalek and Bahareh Maalek    
This paper examined the opportunities of composite double-layer grid superstructures in short-to-medium span bridge decks. It was empirically shown here that a double-layer grid deck system in composite action with a thin layer of two-way reinforced conc... ver más
Revista: Infrastructures

 
Thisari Munmulla, Satheeskumar Navaratnam, Julian Thamboo, Thusiyanthan Ponnampalam, Hidallana-Gamage Hasitha Damruwan, Konstantinos Daniel Tsavdaridis and Guomin Zhang    
The limited knowledge of the behaviour of modular buildings subjected to different loading scenarios and thereby lack of design guidelines hinder the growth of modular construction practices despite its widespread benefits. In order to understand the rob... ver más
Revista: Buildings

 
Xinxia Li, Lan Tao and Mingjie Liu    
In this paper, the system response, stress redistribution, failure mode, and catenary effect of steel frames with circular tube columns and cast steel stiffener (CSS) joints under a sudden column removal scenario were revealed. Based on this force transf... ver más
Revista: Buildings