波浪作用下钢管桩连接平台前后动力响应的试验研究  

In-situ Dynamic Response Tests on Steel Pipe Piles

作　　者：朱照清[1] 龚维明[1] 戴国亮[1] 

机构地区：[1]东南大学,南京210096

出　　处：《建筑科学》2010年第1期39-42,46,共5页Building Science

基　　金：江苏省自然科学基金(BK2007114;BK2008315)

摘　　要：对波浪作用下东海大桥附近海上风电场钢管桩基础在连接平台前后的动态反应进行了原位测试。通过放置在桩顶的加速度传感器测得桩顶的加速度时程曲线,将加速度时程曲线进行2次积分得到桩顶的位移时程曲线。对比实测结果,涨潮期间所测得的桩顶位移大于平潮期;钢管桩与平台连接后,在波浪作用下的位移小于连接前。运用Morison方程计算出桩身的所受的波浪力,并采用m法对桩身的变形进行计算,对比现场实测值,计算所得结果小于测试结果。The in-situ dynamic response tests were conducted on large-diameter steel pipe piles in the sea near Donghai Bridge. The accelerometers were put on the top of the pile to record the acceleration versus time data. The displacement was obtained through quadratic integral to the acceleration signal. Comparing the test results, we can find that the displacement of the pile top tested during the flood tide is larger than during the flood slack; and the displacement of the pile top disconnected with the platform is larger than connected. The Morison equation is used to calculate the wave force on the pile. The m method is used to analyze the deformation of the pile, and the result is less than the in-situ test.

关 键 词：钢管桩 动力响应 Morison方程 M法 

分 类 号：TU473.13[建筑科学—结构工程] TU413[建筑科学—土工工程]