Affiliation:
1. State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University , 100875 , Beijing , China
2. Faculty of Geographical Science, Beijing Normal University , 100875 , Beijing , China
Abstract
Abstract
It is necessary to evaluate the construction effect of viaducts and identify the viaducts that play a key role in road networks. Based on the node deletion method, this article proposes a method to identify the importance of viaducts in road networks. After applying this method to simulate the importance of viaducts in the highway networks in Yunnan and Guizhou Provinces from 2001 to 2020, the results show the following: (1) The viaducts with high importance were mainly built in 2002, 2009, 2015, and 2016. They are mainly distributed on expressways such as the HUKUN Expressway, HANGRUI Expressway, and YINBAI Expressway. Among the viaducts, the Mengzhai Bridge and Beipanjiang Bridge Hukun are the most important. (2) The importance of viaducts will increase, decrease, or increase first and then decrease. Among the years studied, 2012 and 2016 are important time nodes for change. The trend of changes is affected by the construction of highways and viaducts in other locations. In this road network, there are strong coupling relationships between nodes. (3) The importance of some viaducts is not prominent in the whole region, but that does not mean their construction value is low. They may have a high connectivity effect on specific regions from a local perspective.
Reference34 articles.
1. Wang WL, Huang XY, Cao XS. Evolution of road accessibility of concentrated contiguous areas with particular difficulties in China from 1980 to 2010. Sci Geographica Sin. 2016;36(1):29–38 (in Chinese with English summary).
2. Luo XB, Zhu N, Zou HF. China’s lagging region development and targeted transportation infrastructure investments. Ann Econ Financ. 2014;15:365–409.
3. Choi E, Jeon JS, Kim WJ, Kang JW. Investigation of MRS and SMA Dampers Effects on Bridge Seismic Resistance Employing Analytical Models. Int J Steel Struct. 2018;18:1325–35.
4. Kim SJ, Kim JHJ, Yi ST, Noor NM, Kim SC. Structural Performance evaluation of a precast PSC curved girder bridge constructed using multi-tasking formwork. Int J Concr Struct Mater. 2016;10(Suppl 3):1–17.
5. Wang CQ, Shen YG, Zou Y, Zhuang YZ, Li TQ. Analysis of Mechanical characteristics of steel-concrete composite flat link slab on simply-supported beam bridge. KSCE J Civ Eng. 2019;23:3571–80.