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emergency road network structure and planning optimization in mountainous regions in Southwest China under earthquake scenarios

引用

Journal of Mountain Science 2022年第3期19卷 771-780页

作者： WEI Meng HUANG Yong WAN Dan DENG Liang-kai Faculty of Architecture and Urban Planning Chongqing UniversityChongqing 400030China Key Laboratory of New Technology for Construction of Cities in Mountain Area Chongqing UniversityChongqing 400030China Shanghai Urban Planning and Design Research Institute Shanghai 200040China College of Architecture and Urban Planning Tongji UniversityShanghai 200092China

emergency road networks(ERNs),an important part of local disaster prevention systems,can provide security to residents and their *** the ERNs structure is of great significance in terms of promoting disaster prevention and establishing road safety in dangerous mountainous *** study considered the ERNs of the Kangding section of the Dadu River Basin as the area for a case *** network Analysis was used to examine the relationship between the four characteristic indicators of mountain roads and the degree of earthquake impacts under the Lushan,Wenchuan,and Kangding Earthquake *** on the analysis results,the southwest mountain road network was evaluated;then,computer simulations were used to evaluate the structural changes in the road network after index *** network was optimized,and the corresponding emergency avoidance network was proposed to provide a reference for the establishment of the mountainous *** results show that the overall completeness of the mountainous ERNs in Southwest China is poor and prone to traffic ***,the local stability is poor,and the network is susceptible to natural *** overall structure of the road network is balanced,but that of certain road sections is *** sections with different attributes present a“gathering-scattering”spatial distribution,i.e,some sections are clustered together while others are far ***,a planning optimization strategy is proposed to better understand the complexity and systematic nature of the mountainous ERN as a whole and to provide a reference for disaster prevention and mitigation planning in mountainous regions in Southwest China.

关键词： Southwest China emergency road network Mountainous area Complex network Analysis Structural characteristics Geological hazards

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