|Table of Contents|

Classification of expressway landscape sensitive zone based on dynamic visual characteristics(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2015年02期
Page:
1-9
Research Field:
道路与铁道工程
Publishing date:

Info

Title:
Classification of expressway landscape sensitive zone based on dynamic visual characteristics
Author(s):
XU Jin-liang1;  WANG Rong-hua1;  FENG Zhi-hui2;  WANG Zi-geng3
1. School of Highway, Chang’an University, Xi’an 710064, Shaanxi, China; 2. School of Information andManagement Science, Henan Agricultural University, Zhengzhou 450002, Henan, China; 3. Department of Civil and Environmental Engineering, Michigan Technological University, Houghton 49931, Michigan, USA
Keywords:
road engineering;  experessway landscape;  sensitive zone classification;  dynamic visual characteristics
PACS:
U418.9
DOI:
-
Abstract:
The dynamic visual characteristics of drivers were analyzed, the change laws of driver’s horizontal visual degree, foreground vision, fixation point and the deepest vision with the change of speed were studied, the model of expressway landscape sensitive zone was proposed based on drivers’ dynamic visual characteristics, and the functions of landscape sensitive zones were derived. The landscape sensitive zone scopes of bidirectional four-lane expressways at different speed limit levels were calculated by using landscape sensitive zone model, and the classification result was gotten by using landscape sensitive functions. The attributes of different landscape sensitive zones and the design key points of landscape elements were described. The relationship between slope width and the first class landscape sensitive zone scope was studied through contrast tests. Analysis result indicates that the landscape sensitive zone scope of bidirectional four-lane expressway is 545 m, the scopes of the first, second and third classes are 55, 260, 230 m, respectively, and the first class zone is the most sensitive one. The gradient can be revised to change the proportion of side slope width in expressway landscape sensitive zone when designing the side slope landscape, and the smaller the gradient is, the higher the landscape sensitivity is. 4 tabs, 9 figs, 23 refs.

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Last Update: 2015-04-30