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| Determine the Reasonable Reinforcement Scheme for Karst and Soft Soil Foundation of High Fill of High Speed Railway |
| ZENG Yong - hong，DING Zhao - feng，LI Chu - gen |
| (China Railway Eryuan Engineering Group Co. Ltd，Chengdu，Sichuan 610031，China) |
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Abstract Research purposes ： In railway construction，when the subgrade base is karst and soft soil foundation，how to select reasonable reinforcement scheme for the foundation is a problem. The reinforcement scheme must suit for the karst and soft soil foundation at the same time，in order to avoid excessive settlement and karst collapse and ensure the safety of railway operation. In this article， the reasonable reinforcement scheme for karst and soft soil foundation at some station of high speed railway was determined by compositely considering technology，economic，safety and other factors. It can offer reference to the designer and similar project. Research conclusions ： ( 1 ) It is difficult to design reinforcement scheme for karst and soft soil foundation. The traditional reinforcement measures for the foundation are not applicable. It is need to adopt new technology. (2 ) Pile - net structure，pile raft structure and pile board structure can also meet the design requirements. The best solution can be determined by the scheme comparison. ( 3 ) The choice for the solution should avoid the blind pursuit of low cost，and mainly reflect the pursuit of 11 high cost11 values. (4 ) The research results can be used to determine the reinforcement scheme for karst and soft soil foundation of high fill of high speed railway.
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Received: 18 November 2015
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2016, Vol. 33 
