| 146 | 0 | 3 |
| Downloads | Citas | Reads |
随着码头服役周期由50年跃升至100年，码头结构长期安全服役性能评估成为目前设计面临的技术难题，复杂海洋环境下高桩码头结构-地基耦合响应特性也成为相关学者关注的热点问题。针对该问题，采用数值分析方法，对波浪作用下高桩码头结构-地基耦合响应规律及演变开展数值模拟，采用考虑累积塑性应变与循环次数关联的弹塑性本构模型实现循环荷载下应变软化问题的模拟，建立了地基-高桩码头结构三维有限元计算模型，系统分析波浪循环荷载下高桩码头桩基位移响应、桩与地基土相互作用演变及桩体内力响应规律，并揭示了桩体累积位移、桩土相互作用及弯矩随波浪荷载作用周期变化的演变规律。结果显示，桩体嵌入比会显著影响桩身位移特征、桩周土体的扰动程度以及桩身弯矩的分布特点。研究成果可为长期服役下高桩码头结构安全评估提供依据。
Abstract：With the service life of the wharf increasing from 50 to 100 years, the long-term safety assessment has become a technical challenge in current design. The coupling response characteristics of pile-foundations under complex marine environments have become a hot topic. To address this issue, this paper adopts numerical analysis methods to conduct research on the coupling response laws and evolution of pile-foundations under wave load. An elastoplastic constitutive model considering the correlation between cumulative plastic strain and cycle number is used to simulate the strain softening problem under cyclic loading. A three-dimensional finite element calculation model is established to analyze the displacement response, the pile-soil interaction, and the internal force response of the pile under cyclic wave loading. The results show that the pile embedment ratio significantly affects the displacement characteristics of the pile body, the disturbance degree of the soil around the pile, and the distribution characteristics of the internal force of the pile. The fruit can provide a basis for the safety assessment of high-pile wharf structures under long-term service.
[1]蒋建平,魏建华,马恒.高桩码头承载特性三维数值模拟[J].上海海事大学学报, 2014,35(1):84-87.
[2]毕建巍,苏雷,解立波,等.波流作用下高桩码头动力响应试验研究[J].水运工程, 2023(2):37-43,73.
[3]杜天宇.基于桩-土相互作用的高桩码头地震响应研究[D].哈尔滨:哈尔滨工程大学,2016.
[4]解立波,苏雷,王建峰,等.波浪作用下高桩码头-海床系统动力响应特性研究[J].水运工程, 2025(2):27-35.
[5]贺林林.离岸深水全直桩码头结构承载特性及简化计算方法研究[D].天津:天津大学, 2016.
[6]熊琦,崔春义,赵敏,等.淤积荷载作用下高桩码头桩基受力变形特性灵敏度分析[J].大连海事大学学报, 2025,51(1):141-150.
[7] Li J B, Cui C Y, Xiao Z S, et al. Reliability and sensitivity analyses of monopile supported offshore wind turbines based on probability density evolution method with pre-screening of controlling parameters[J]. Ocean Engineering, 2024, 310:118746.
[8] Wang B L, Cui C Y, Xu C S, et al. A novel analytical solution for horizontal vibration of partially embedded offshore piles considering the distribution effect of wave loads[J]. Ocean Engineering, 2024, 307:118179.
[9] Cui C Y, Liang Z M, Xu C S, et al. Analytical solution for horizontal vibration of end-bearing single pile in radially heterogeneous saturated soil[J]. Applied Mathematical Modelling, 2023, 116:65-83.
[10] Cui C Y, Qi Y F, Meng K, et al. A new analytical solution for horizontal vibration of floating pile in saturated soil based on FSSP method[J]. Soil Dynamics and Earthquake Engineering, 2024, 187:108960.
[11] Cui C Y, Meng K, Xu C S, et al. Analytical solution for longitudinal vibration of a floating pile in saturated porous media based on a fictitious saturated soil pile model[J]. Computers and Geotechnics,2021,131:103942.
[12] Meng K, Cui C Y, Liang Z M, et al. A new approach for longitudinal vibration of a large-diameter floating pipe pile in visco-elastic soil considering the three-dimensional wave effects[J]. Computers and Geotechnics, 2020, 128:103840.
[13]顾栋辉.波浪作用下海上风电机组结构与基础相互作用与动力分析研究[D].南京:东南大学, 2017.
[14]陈为飞.近海风机塔架风浪荷载分析[D].杭州:浙江大学, 2010.
[15]廖雄华,张克绪.天津港高桩码头桩基-岸坡土体相互作用的数值分析[J].水利学报, 2002,33(4):81-87.
[16]王妍,蒋建平.高桩码头中桩土相互作用数值模拟研究[J].科技资讯,2013,11(28):34-35.
[17]闫澍旺,封晓伟.天津港软黏土强度循环弱化试验研究及应用[J].天津大学学报,2010,43(11):943-948.
[18] Cheng X L, Cheng W L, Wang P G, et al. Response of offshore wind turbine tripod suction bucket foundation to seismic and environmental loading[J]. Ocean Engineering,2022,257:111708.
[19] Cheng X L, Wang J H. An elastoplastic bounding surface model for the cyclic undrained behaviour of saturated soft clays[J]. Geomechanics and Engineering, 2016,11(3):325-343.
[20] Yang Q J, Gao Y F, Kong D Q, et al. Centrifuge modelling of lateral loading behaviour of a"semi-rigid"Mono-pile in soft clay[J]. Marine Georesources&Geotechnology, 2019,37(10):1205-1216.
Basic Information:
DOI：10.20203/j.cnki.2095-8919.2025.05.001
China Classification Code:U656.113;P731.22
Citation Information:
[1]李子航,田羽航,孙立强,等.波浪作用下高桩码头结构-地基耦合响应数值分析[J].吉林建筑大学学报,2025,42(05):1-9.DOI:10.20203/j.cnki.2095-8919.2025.05.001.
Fund Information:
国家重点研发计划资助项目（2022YFB2603000）; 国家自然科学基金项目（42277133）