Study on dynamic character of high-speed railway subgrade in expansive soil

2015 ◽  
pp. 253-258
Keyword(s):  
High Speed ◽  
Expansive Soil ◽  
High Speed Railway ◽  
Dynamic Character

scholarly journals Field study on swelling-shrinkage response of an expansive soil foundation under high-speed railway embankment loads

2018 ◽  
Vol 58 (6) ◽  
pp. 1538-1552 ◽  
Author(s):  
Guanlu Jiang ◽  
Weizhi Chen ◽  
Xianfeng Liu ◽  
Shengyang Yuan ◽  
Lijun Wu ◽  
...  
Keyword(s):  
Field Study ◽  
High Speed ◽  
Expansive Soil ◽  
High Speed Railway ◽  
Soil Foundation

Investigation of immersion influence on dynamic properties of high-speed railway subgrade with semi-rigid waterproof functional layer through field-excitation testing

2018 ◽  
Vol 55 (1) ◽  
pp. 19-33 ◽  
Author(s):  
Liang-liang Wang ◽  
Xiaoqin Lei ◽  
Shukui Liu
Keyword(s):  
High Speed ◽  
Large Scale ◽  
Dynamic Properties ◽  
Expansive Soil ◽  
Fatigue Property ◽  
Vibration Velocity ◽  
Bottom Surface ◽  
Functional Layer ◽  
High Speed Railway ◽  
Immersion Condition

The subgrade below the under-construction Kunming–Shanghai high-speed railway faces serious stability problems induced by considerable swelling and shrinkage volume change of expansive soil along with variation of moisture content. To prevent the occurrence of potential damage, reasons for the frequent occurrence of drainage ditch breakage and platform damage along the railway corridor in expansive soil areas were analyzed. A novel integral ancillary facility and semi-rigid waterproof functional layer were developed. Large-scale field dynamic tests were carried out to investigate the fatigue performance of the waterproof functional layer and the influences of different service environments (relatively dry condition and immersion condition) on the dynamic response of the subgrade. Results show that the fatigue property and waterproofing capability of the waterproof functional layer can fulfill the standard requirements for the high-speed railway subgrade. There was an enlargement phenomenon of the dynamic stress and vibration velocity when the service environment of subgrade changed from a relatively dry condition to an immersion condition. The vibration velocity seemed to increase along the depth of the graded broken stone surface layer and decrease linearly with further depth increase from the bottom surface of the waterproof functional layer.

A Museum Filled with Past, Present and Future in High Speed Railway^|^mdash;SCMAGLEV and Railway Park^|^mdash;

2012 ◽  
Vol 132 (10) ◽  
pp. 673-676
Author(s):  
Takaharu TAKESHITA ◽  
Wataru KITAGAWA ◽  
Inami ASAI ◽  
Hidehiko NAKAZAWA ◽  
Yusuke FURUHASHI
Keyword(s):  
High Speed ◽  
High Speed Railway
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