http://reply.papertrans.cn/1/25/2480/2480-31.png
Submitted on: 08 November 2015.
Revised on: 12 January 2016.
Accepted on: 01 March 2016.
___________________Archives of Civil and Mechanical Engineering
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http://reply.papertrans.cn/1/25/2480/2480-34.png
Submitted on: 04 September 2015.
Revised on: 24 October 2015.
Accepted on: 06 December 2015.
___________________Archives of Civil and Mechanical Engineering
http://reply.papertrans.cn/1/25/2480/2480-36.png