WEAP 프로그램을 이용한 U형 널말뚝의 항타관입성 해석

국문 초록 (Abstract)

진통해머를 이용한 널말뚝 시공은 소음에 민감한 도심지 굴착 공사에 유용하다. 그러나 널말뚝의 진동-항타 시공시 항타관입성에 대한 연구는 거의 수행된 적이 없다. 이 연구에서는 국내에서 많이 사용되고 있는 U형 널말뚝을 진동해머를 이용하여 시공할 때 여러 가지 조건에 따른 항타관입성을 WEAP 프로그램을 이용하여 분석하였다. 해석결과 널말뜩의 관입속도는 N값이 클수록 느려지며,20m 이내로 시공되는 경우 단면적이 클수록 느려지는 것으로 나타났다.

다국어 초록 (Multilingual Abstract)

Vibratory pile driving has an advantage of reduced noise pollutions compared to impact pile driving and it has been very widely used in the installation of sheet piles. However, very little has been known about the driveability characteristics of sheet pile under vibratory driving. So, the proper sheet piles and vibratory hammer for an given soil profile and depth are determined on a empirical basis. In this study, the driveability of If-type sheet piles are analytically estimated using the commercial WEAP(Wave Equation Analysis of Piles) program. The WEAP analysis shows that penetration rate of sheet pile decreases as N value increases. And if penetration length is not over 20 meters, the rate of penetration decreases as the sectional area of sheet pile increases.

참고문헌 (Reference)

• 1 "Wave Equation Analysis of Pile Driving" 2005.
• 2 "Pile Driving Analysis by the Wave Equation Journal of the Soil Mechanics and Foundation Division" 86 :
• 3 "Installation of Steel Sheet Piles" 1995.
• 4 "Effect of Pile Geometry and Soil Saturation in the Behavior of Non Displacement Piles Installed by Vibration" ms thesis presented to the faculty of dep. of civil & environmental engineering : 1993.