基于FEM卧式圆筒防波堤施工期稳定性研究
|
摘要
针对卧式防波堤规范及其工程应用的不足,采用有限元法对吹填造陆施工过程中卧式圆筒防波堤结构受力和稳定性进行了分析,模拟中考虑了分层吹填,土工布加固等工况。其中稳定性分析采用温度场关联土体参数,通过控制温度场实现参数折减的方式实现了强度折减法模拟卧式防波堤的稳定性。结果显示:采用有限元法可以很好地模拟施工过程中土体的变形及结构的受力状态,并且所提出的强度折减法实现技术可以准确地得到卧式防波堤的安全系数。研究成果为推广卧式圆筒防波堤工程应用打下基础,文中的分析方法和手段为同类型工程分析提供有效参考。
In view of the shortcomings of horizontal breakwater specification and engineering application, the finite element method was used to analyze the stress and stability of the horizontal cylindrical breakwater structure in the process of hydraulic fill and road construction, considering the layered hydraulic fill, geotextile reinforcement and other working conditions in the simulation. In the stability analysis, the temperature field is used to correlate the soil parameters, and the strength reduction method is used to simulate the stability of the horizontal breakwater by controlling the temperature field to reduce the parameters. The results show that the finite element method can well simulate the deformation of soil and the stress state of structure during construction, and the proposed strength reduction method can accurately obtain the safety factor of horizontal breakwater. The research results lay a foundation for the promotion of the engineering application of horizontal cylindrical breakwater. The analysis methods and means in this paper provide effective reference for the analysis of similar projects.
In view of the shortcomings of horizontal breakwater specification and engineering application, the finite element method was used to analyze the stress and stability of the horizontal cylindrical breakwater structure in the process of hydraulic fill and road construction, considering the layered hydraulic fill, geotextile reinforcement and other working conditions in the simulation. In the stability analysis, the temperature field is used to correlate the soil parameters, and the strength reduction method is used to simulate the stability of the horizontal breakwater by controlling the temperature field to reduce the parameters. The results show that the finite element method can well simulate the deformation of soil and the stress state of structure during construction, and the proposed strength reduction method can accurately obtain the safety factor of horizontal breakwater. The research results lay a foundation for the promotion of the engineering application of horizontal cylindrical breakwater. The analysis methods and means in this paper provide effective reference for the analysis of similar projects.
引文
[1]周建锋,耿瑞岩,丁页岭.防波堤施工过程中地基变形及稳定性数值分析[J].山西建筑,2017,43(20):69-70.ZHOU Jian-feng, GENG Rui-yan, DING Ye-ling. Numerical analysis of foundation deformation and stability in breakwater construction[J]. Shanxi Architecture, 2017, 43(20), 69-70.
[2]王元战,龚薇.防波堤稳定性的滑移控制[J].振动工程学报,1999(2):244-249.WANG Yuan-zhan, GONG Wei. Sliding control to the stability of breakwater[J]. Journal of Vibration Engineering, 1999(2):244-249.
[3]俞聿修.斜坡式防波堤技术的新进展[J].港工技术,1995(3):13-18.YU Yu-xiu. New progress of rubble mound breakwater technology-A report on two international conferences[J]. Port Engineering Technology, 1995(3):13-18.
[4] YANG Z, XIE M, GAO Z, et al. Experimental investigation on hydrodynamic effectiveness of a water ballast type floating breakwater[J]. Ocean Engineering, 2018, 167:77-94.
[5]赵海升.防波堤与吹填施工同步进行时的施工注意事项[J].中国水运(下半月),2018,18(5):155-156.ZHAO Hai-sheng. Construction matters needing attention when the construction of enclosure and dredger filling proceeds synchronously[J]. China Water Transport, 2018, 18(5):155-156.
[6]班铭,曹宇恒,王长辉,等.半圆型防波堤研究综述[J].中国水运(下半月),2013(11):269-271.BAN Ming, CAO Yu-heng, WANG Chang-hui, et al. Summary of research on semi-circular breakwater[J]. China Water Transport,2013(11):269-271.
[7]陈花美.吹填软黏土地基上堆载对防波堤稳定性的影响研究[J].石家庄铁道大学学报:自然科学版,2013(S1):85-87.CHEN Hua-mei. Study on the influence of surcharge on the stability of breakwater on dredged soft clay foundation[J]. Journal of Shijiazhuang Tiedao University:Natural science, 2013(S1):85-87.
[8]张立丹.半圆型防波堤波浪力分布及稳定性分析[D].保定:河北大学,2014.ZHANG Li-dan. Study on wave force distribution and reliability of semi-circular breakwater[D]. Baoding:Hebei University, 2014.
[9]秦一楠. 1/4圆弧面胸墙沉箱防波堤可靠性分析[D].保定:河北大学,2011.QIN Yi-nan. Reliability analysis of quarter-circular caisson breakwater[D]. Baoding:Hebei University, 2011.
[10]苏晓佳. 1/4圆弧防波堤波浪力计算及稳定性分析[D].保定:河北大学,2015.SU Xiao-jia. Research on wave force distribution and reliability analysis of quarter-circular breakwater[D]. Baoding:Hebei University, 2015.
[11]白永顺.卧式圆筒防波堤和防波堤结构研究[D].天津:天津大学,2017.BAI Yong-shun. Study of horizontal cylinder breakwater and cofferdam[D]. Tianjin:Tianjin University, 2017.
[12] KAIDI S, ROUAINIA M, OUAHSINE A. Stability of breakwaters under hydrodynamic loading using a coupled DDA/FEM approach[J]. Ocean Engineering 2012, 55(15), 62-70.
[13]张博.航道疏浚对港区防波堤稳定性影响研究[D].天津:天津大学,2015.ZHANG Bo. Investigation of dyke stability at harbor district due to waterway dredging[D]. Tianjin:Tianjin University, 2015.
[14] JI C, CHENG Y, YANG K, et al. Numerical and experimental investigation of hydrodynamic performance of a cylindrical dual pontoon-net floating breakwater[J]. Coastal Engineering, 2017, 129:1-16.
[15]肖忠,王元战,及春宁.基于极限平衡法的箱筒型基础防波堤稳定性分析[J].岩土工程学报,2013,35(5):828-833.XIAO Zhong, WANG Yuan-zhan, JI Chun-ning. Stability analysis of bucket foundation breakwaters based on limit equilibrium method[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(5):828-833.
[16] YE J, JENG D, WANG R, et al. Numerical study of the stability of breakwater built on a sloped porous seabed under tsunami loading[J]. Applied Mathematical Modelling, 2013, 37(23):9 575-9 590.
[17]文立,刘祚秋.一种新型浮式防波堤的数值模拟研究[J].中国水运,2018(3):50-51.WEN Li, LIU Zuo-qiu. Numerical simulation of a new floating breakwater[J]. China Water Transport, 2018(3):50-51.
[18]周建锋,耿瑞岩,丁页岭.防波堤施工过程中地基变形及稳定性数值分析[J].山西建筑,2017,43(20):62-63.ZHOU Jian-feng, GENG Rui-yan, DING Ye-ling. Numerical analysis of foundation deformation and stability during breakwater construction[J]. Shanxi Architecture, 2017, 43(20):62-63.
[19]孙百顺,王元战,孙熙平,等.软土地基沉箱防波堤失稳模式及稳定性分析方法[J].海洋工程. 2016,34(3):72-79.SUN Bai-shun, WANG Yuan-zhan, SUN Xi-ping, et al. Research on the failure mode and stability analysis method of caisson breakwater on soft foundation[J]. The Ocean Engineering, 2016, 34(3):72-79.
[20]郑颖人,赵尚毅,张鲁渝.用有限元强度折减法进行边坡稳定分析[J].中国工程科学,2002,4(10):52-56.ZHENG Ying-ren, ZHAO Shang-yi, ZHANG Lu-yu. Slope stability analysis by strength reduction FEM[J]. Engineering Science, 2002,4(10):52-56.
[2]王元战,龚薇.防波堤稳定性的滑移控制[J].振动工程学报,1999(2):244-249.WANG Yuan-zhan, GONG Wei. Sliding control to the stability of breakwater[J]. Journal of Vibration Engineering, 1999(2):244-249.
[3]俞聿修.斜坡式防波堤技术的新进展[J].港工技术,1995(3):13-18.YU Yu-xiu. New progress of rubble mound breakwater technology-A report on two international conferences[J]. Port Engineering Technology, 1995(3):13-18.
[4] YANG Z, XIE M, GAO Z, et al. Experimental investigation on hydrodynamic effectiveness of a water ballast type floating breakwater[J]. Ocean Engineering, 2018, 167:77-94.
[5]赵海升.防波堤与吹填施工同步进行时的施工注意事项[J].中国水运(下半月),2018,18(5):155-156.ZHAO Hai-sheng. Construction matters needing attention when the construction of enclosure and dredger filling proceeds synchronously[J]. China Water Transport, 2018, 18(5):155-156.
[6]班铭,曹宇恒,王长辉,等.半圆型防波堤研究综述[J].中国水运(下半月),2013(11):269-271.BAN Ming, CAO Yu-heng, WANG Chang-hui, et al. Summary of research on semi-circular breakwater[J]. China Water Transport,2013(11):269-271.
[7]陈花美.吹填软黏土地基上堆载对防波堤稳定性的影响研究[J].石家庄铁道大学学报:自然科学版,2013(S1):85-87.CHEN Hua-mei. Study on the influence of surcharge on the stability of breakwater on dredged soft clay foundation[J]. Journal of Shijiazhuang Tiedao University:Natural science, 2013(S1):85-87.
[8]张立丹.半圆型防波堤波浪力分布及稳定性分析[D].保定:河北大学,2014.ZHANG Li-dan. Study on wave force distribution and reliability of semi-circular breakwater[D]. Baoding:Hebei University, 2014.
[9]秦一楠. 1/4圆弧面胸墙沉箱防波堤可靠性分析[D].保定:河北大学,2011.QIN Yi-nan. Reliability analysis of quarter-circular caisson breakwater[D]. Baoding:Hebei University, 2011.
[10]苏晓佳. 1/4圆弧防波堤波浪力计算及稳定性分析[D].保定:河北大学,2015.SU Xiao-jia. Research on wave force distribution and reliability analysis of quarter-circular breakwater[D]. Baoding:Hebei University, 2015.
[11]白永顺.卧式圆筒防波堤和防波堤结构研究[D].天津:天津大学,2017.BAI Yong-shun. Study of horizontal cylinder breakwater and cofferdam[D]. Tianjin:Tianjin University, 2017.
[12] KAIDI S, ROUAINIA M, OUAHSINE A. Stability of breakwaters under hydrodynamic loading using a coupled DDA/FEM approach[J]. Ocean Engineering 2012, 55(15), 62-70.
[13]张博.航道疏浚对港区防波堤稳定性影响研究[D].天津:天津大学,2015.ZHANG Bo. Investigation of dyke stability at harbor district due to waterway dredging[D]. Tianjin:Tianjin University, 2015.
[14] JI C, CHENG Y, YANG K, et al. Numerical and experimental investigation of hydrodynamic performance of a cylindrical dual pontoon-net floating breakwater[J]. Coastal Engineering, 2017, 129:1-16.
[15]肖忠,王元战,及春宁.基于极限平衡法的箱筒型基础防波堤稳定性分析[J].岩土工程学报,2013,35(5):828-833.XIAO Zhong, WANG Yuan-zhan, JI Chun-ning. Stability analysis of bucket foundation breakwaters based on limit equilibrium method[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(5):828-833.
[16] YE J, JENG D, WANG R, et al. Numerical study of the stability of breakwater built on a sloped porous seabed under tsunami loading[J]. Applied Mathematical Modelling, 2013, 37(23):9 575-9 590.
[17]文立,刘祚秋.一种新型浮式防波堤的数值模拟研究[J].中国水运,2018(3):50-51.WEN Li, LIU Zuo-qiu. Numerical simulation of a new floating breakwater[J]. China Water Transport, 2018(3):50-51.
[18]周建锋,耿瑞岩,丁页岭.防波堤施工过程中地基变形及稳定性数值分析[J].山西建筑,2017,43(20):62-63.ZHOU Jian-feng, GENG Rui-yan, DING Ye-ling. Numerical analysis of foundation deformation and stability during breakwater construction[J]. Shanxi Architecture, 2017, 43(20):62-63.
[19]孙百顺,王元战,孙熙平,等.软土地基沉箱防波堤失稳模式及稳定性分析方法[J].海洋工程. 2016,34(3):72-79.SUN Bai-shun, WANG Yuan-zhan, SUN Xi-ping, et al. Research on the failure mode and stability analysis method of caisson breakwater on soft foundation[J]. The Ocean Engineering, 2016, 34(3):72-79.
[20]郑颖人,赵尚毅,张鲁渝.用有限元强度折减法进行边坡稳定分析[J].中国工程科学,2002,4(10):52-56.ZHENG Ying-ren, ZHAO Shang-yi, ZHANG Lu-yu. Slope stability analysis by strength reduction FEM[J]. Engineering Science, 2002,4(10):52-56.