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Submitted on: 20 January 2004.
Revised on: 26 February 2004.
Accepted on: 15 March 2004.
___________________COMPUTER-AIDED CIVIL AND INFRASTRUCTURE ENGINEERING
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http://reply.papertrans.cn/1/63/6266/6266-34.png
Submitted on: 17 May 2008.
Revised on: 18 June 2008.
Accepted on: 10 August 2008.
___________________COMPUTER-AIDED CIVIL AND INFRASTRUCTURE ENGINEERING
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