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摘要：
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本文以动弹性固结理论和线性渗流理论为基础，建立了求解随机波浪作用下饱和砂质海床中孔隙水压力响应的有限元方程，并用Wilson－θ法进行动力响应求解。海床可为具有任何边界条件的分层分块介质，作用波浪可为任何形态的随机波浪。忽略波浪和海床的动态相互作用，海床面上的波浪压力可先按各种波浪理论进行计算，之后作为边界荷载作用于海床。计算孔隙水压力与模型实验的量测值吻合较好。通过计算讨论分析了砂质海床中的孔隙水压力响应。
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A FEM method, based on a dynamic elastic consolidation theory and linear permeability theory, is applied to solve the transient response of pore water pressure in sandy scabeds under the action of random waves without considering interactions between waves and scabed. The seabed can be layered with random boundary conditions. Bottom pressures can be calculated by an improved method for irregular waves. Comparisons of pore water pressure in model tests with theoretical calculations show that the elastic theory is valid for sandy scabeds. The influence of soil properties and wave periods to the response has been discussed by the computation for real seabeds.
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作者简介：
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参考文献：
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1Zen K and Yamazaki H,Wave-induced liquefaction inapermeable seabed.Report of the Port and HarbourResearch Institute,1993;31(5):155-192
2Yamamoto T et al.On the response of a poro-elasticbed to water waves.J.Fluid Mech,1978; 87(1):193-206
3Biot M A.General theory of three-dimensional consolldation.J.ppl Phys, 1941, 12: 155-164
4Madsen O S.Weve-induced pore pressure and effectivestresses in a porous bed.Geotechnique,1978;28(4):377-393
5Okusa S. Wave-induced stresses in unsaturated submarinesediments.Geotechnique,1985;35(4):517-532
6赵子丹,别社安砂质海床对波浪的响应及其稳定性研究的回顾.海洋通报, 1995; 14(4):85-104
7别社安等波浪作用下砂床中的孔隙水压力响应模型实验研究海洋通报,1997;16(5):55-65
8别社安波浪作用下海床中的孔隙水压力响应及其对建筑物稳定性的影响.天津大学博士论文,1996
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