基坑支护双排桩力学性能研究
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摘要
双排桩是一种新型的基坑支护方式,具有场地限制条件少、支护效果突出等优点。本文在国家自然科学基金(50508012、50538030)和黑龙江省科技创新人才研究专项资金(2008RFQXG058)以及黑龙江省建工集团的支持下,展开了对双排桩支护结构基本力学性能分析的研究。本文在总结前人研究成果的基础上,分析了桩土相互作用基本特征,并用ABAQUS仿真了其力学性能的演变过程,最后初步分析了双排桩在强降雨环境下的性态反应,获得了双排桩在特殊条件下的一些基本特点。本文主要研究内容如下:
(1)总结了双排桩国内外发展研究现状,归纳分析了目前存在的问题,阐述了有限元计算方法的优越性。
(2)提出了二维模型尺寸建议,在二、三维模型对比基础上,阐述了各自的优缺点。
(3)对双排桩进行了内力、变形、基坑隆起状态进行了分析,得到了双排桩基本力学性能。
(4)分析了双排桩参数敏感性,讨论了参数最优设计方法。
(5)初步分析了强降雨条件下双排桩的力学响应,提出了安全设计的方法。最后,对本论文的研究内容进行了总结,并对今后的研究目标与任务提出了展望。
Double-row piles used in the deep pit excavation are a new retaining system. This supporting system has less ground size demand but more brace-effect. Supported by NSFC (grant numbers are 50508012 and 50538030, respectively) and Research Fund for Technology Innovation Talents of Heilongjiang (grant number: 2008RFQXG058) as well as sponsored by Heilongjiang Province Instruction Group, the research activities focused on the mechanical behavior of double-piles in pit supporting system. Based on the previous research, the basic characteristic of double piles-soil interaction is analyzed in this thesis. The process of varying mechanical behavior of double-piles is simulated considering of the complex surrounding load by the commercial software ABAQUS. On the basis of the above work, the special study on the mechanics of double-piles under the condition of heavy rainfall is implemented and some preliminary results are present here. The main works of this research are listed as following:
The state-of-the-art technology of double-piles is summarized, some key problems in practice are presented and the importance of finite element method to tackle this kind of difficult calculated questions is shown.
The method concerning on selecting the model size is introduced; the advantages and disadvantages of the two and three dimensional simulated models are presented comparing with these models carefully.
The force and deformation of soil and piles as well as the deformation of foundation pit bottom and the basic mechanics performance of double-piles is obtained.
Sensitive parameters of double-piles are analyzed and the optimal design procedure is discussed.
The mechanics performance of piles and soil is simulated under the condition of heavy rainfall and the safe and the propositional design-effect method maybe used in practice.
Last but not the end, some conclusions and the prospects in future are given in the final part of the thesis.
(1)总结了双排桩国内外发展研究现状,归纳分析了目前存在的问题,阐述了有限元计算方法的优越性。
(2)提出了二维模型尺寸建议,在二、三维模型对比基础上,阐述了各自的优缺点。
(3)对双排桩进行了内力、变形、基坑隆起状态进行了分析,得到了双排桩基本力学性能。
(4)分析了双排桩参数敏感性,讨论了参数最优设计方法。
(5)初步分析了强降雨条件下双排桩的力学响应,提出了安全设计的方法。最后,对本论文的研究内容进行了总结,并对今后的研究目标与任务提出了展望。
Double-row piles used in the deep pit excavation are a new retaining system. This supporting system has less ground size demand but more brace-effect. Supported by NSFC (grant numbers are 50508012 and 50538030, respectively) and Research Fund for Technology Innovation Talents of Heilongjiang (grant number: 2008RFQXG058) as well as sponsored by Heilongjiang Province Instruction Group, the research activities focused on the mechanical behavior of double-piles in pit supporting system. Based on the previous research, the basic characteristic of double piles-soil interaction is analyzed in this thesis. The process of varying mechanical behavior of double-piles is simulated considering of the complex surrounding load by the commercial software ABAQUS. On the basis of the above work, the special study on the mechanics of double-piles under the condition of heavy rainfall is implemented and some preliminary results are present here. The main works of this research are listed as following:
The state-of-the-art technology of double-piles is summarized, some key problems in practice are presented and the importance of finite element method to tackle this kind of difficult calculated questions is shown.
The method concerning on selecting the model size is introduced; the advantages and disadvantages of the two and three dimensional simulated models are presented comparing with these models carefully.
The force and deformation of soil and piles as well as the deformation of foundation pit bottom and the basic mechanics performance of double-piles is obtained.
Sensitive parameters of double-piles are analyzed and the optimal design procedure is discussed.
The mechanics performance of piles and soil is simulated under the condition of heavy rainfall and the safe and the propositional design-effect method maybe used in practice.
Last but not the end, some conclusions and the prospects in future are given in the final part of the thesis.
引文
1.曹建海.经济全球化与中国汽车产业发展.管理世界,2003,(4):68~76
2.钱七虎.迎接我国城市地下空间开发高潮.岩土工程学报,1998,20(1):112~113
3.郑刚,顾晓鲁.高等基础工程学.基础工业出版社,2006:464~521
4.袁聚云,李镜培,楼晓明,等.基础工程设计原理.同济大学出版社,2000:181~217
5.曾广群.深基坑双排桩支护结构的设计与研究.西安建筑科技大学硕士学位论文,2005
6.丁海涛.九华山隧道工程深开挖软土地基双排桩围护桩作用研究.南京:河海大学,2006:2~5
7.吴刚.深基坑双排桩支护结构的理论分析及数值计算.北京交通大学硕士学位论文,2006
8.张富军.双排桩支护结构研究.西南交通大学硕士学位论文,2004
9.何颐华,杨斌,金宝森,等.双排护坡桩试验与计算的研究.建筑结构学报,1996,17(2):58~66
10.刘庆茶.有空间效应的土压力在双排桩支护中的应用研究.大连理工大学硕士学位论文,2006
11.汤芃,韩雪松,冯莉梅.双排桩基坑支护结构桩间土流失问题分析.基础工程设计,2007:68~70
12. K Terzaghi, R B Peck. Soil Mechanics in Engineering Practice. 2nd ed. John Wiley & Sons. Inc. New York,1967:729
13. G W Clough, J M Duncan. Finite Element Analysis of Retaining Wall Behavior. Geotechnique,1969:23~69
14. J M Duncan, C Y Chang. Nonlinear Analysis of Stress and Strain in Soil. Journal of the Soil Mechanics and Foundation Division. ASCE.1970,96(5):637~659
15. C F Leung, Y K Chow, R F Shen. Behavior of Pile Subject to Excavation-Induced Soil Movement. Journal of Geotechnical and Geo-environmental Engineering, 2000, November(947)
16. R K Rowe, K M Lee. An Evaluation of Simplified Techniques for Estimating Three-dimensional Undrained Ground Movements Due to Tunneling in Soft Soils, Canada Geotech,1992,J.29:39~52
17. R J Finno , I S Harahap, Finite Elements Analysis of HDR-4 Excavation, Journal of Geotechnical Engineering, ASCE, 1991: 1590~1609
18. R B Peck. Deep Excavations and Tunneling in Soft Ground, 7th ICSMFE, 1969: 225~229
19. C Y Ou, D C Chiou, Wu T S. Three-Dimensional Finite Element Analysis of Deep Excavation. Journal of Geotechnical Engineering, 1996, 122(5): 337~345
20. L Bjerrum, O Eide. Stability of Strutted Excavations in Clay, Geotechnique, 1956, 6(1): 32~47
21. P T Brown, J R Booker, Finite Element Analysis of Excavation. Computer and Geotechnics, ASCE, 1985: 207~220
22. S K Bose, N N Som. Parametric Study of a Braced Cut by Finite Element Method. Computer and Geotechnics,1998, 22(2):91~107
23. K M Lee, R K Rowe. An Analysis for Three Dimensional Ground Movements : The Thunder Bay Tunnel, Canada Geotech, 1991, (28): 25~41
24.张弥.深基坑开挖中双排桩支护结构的应用与探讨.地基处理,1993,4(3):42~47
25.程知言,裘慰伦,张可能,等.双排桩支护结构设计计算方法探讨.地质与勘探,2001,37(2):88~93
26.余志成,施文华.深基坑支护设计与施工.中国建筑工业出版社,1997
27.黄强.深基坑支护工程设计技术.北京:中国建筑工业出版社,1995
28.熊巨华.一类双排桩支护结构的简化计算方法.勘察科学技术,1999,(2):32~34
29.万智,王贻荪,李刚.双排桩计算结构的分析与计算.湖南大学学报.,2001,(1)
30.戴智敏,阳凯凯.深基坑双排桩支护结构体系受力分析与计算.信阳师范学院学报,2002,15(3):348~352
31.蒋波.挡土结构土拱效应及土压力理论研究.浙江大学博士学位论文,2005
32.刘钊.双排支护桩结构的分析及实验研究.岩土工程学报,1992,14(5):76~80
33.曹俊坚,平杨,朱长歧,等.考虑圈梁空间作用的深基坑双排桩支护结构计算方法研究.岩石力学与工程学报,1999,18(6):709~712
34.平杨,白世伟.深基坑双排桩空间协同计算理论及位移反应分析.土木工程学报,2001(4):79~82
35.郑刚,李欣,刘畅,等.考虑桩土相互作用的双排桩分析.建筑结构学报,2004,25(1):99~106
36.蔡袁强,阮连法,吴世明,等.软粘土地基基坑开挖中双排桩式围护结构数值分析与工程应用.建筑结构学报,1999,20(4):65~71
37.吴海玲,张锡增,吴增海,沙同举.深基坑双排灌注桩支护结构分析方法,济南大学学报自然科学版,2003,17(2):138~141
38.应宏伟,初振环.深基坑带撑双排桩支护结构有限元分析.岩石力学与工程学报,2007,26(s2):4325~4331
39.杨靖.考虑尺寸效应的双排桩的有限元分析.天津:天津大学,2006:22~27
40.谢定义,姚仰平,党发宁.高等土力学.高等教育出版社,2008:291~361
41. Abaqus, Abaqus Standard User's Manuals
42. Abaqus, Abaqus Analysis User's Manuals
43.李广信.高等土力学.清华大学出版社,2002:416~419
44.龚晓南.土工计算机分析.北京:中国建筑工业出版社,2000:64~83
45.屈智炯.土的塑性力学.成都:成都科技大学出版社,1987:116~137
46.钱家欢,殷宗泽.土工原理与计算.北京:中国水利水电出版社,1994:157~158
47.徐学燕,邱明国.高等土力学.哈尔滨:哈尔滨工业大学出版社,2008:39~52
48.陈惠发, A.F.萨里普.弹性与塑性力学.北京:中国建筑工业出版社,2004:225~226
49.薛守义.高等土力学.北京:中国建材工业出版社,2007:69~76
50.郑颖人,沈珠江,龚晓南.岩土塑性力学原理.北京:中国建筑工业出版社,2002:124~133
51.程金茹,郭择德,郭大波.非饱和土壤特性参数获取方法.水文地质工程地质,1996,(2):9~13
52.吕殿青,邵明安.非饱和土壤水力参数的模型及确定方法.应用生态学报,2004,15(1):163~166
53. M T Van Genuchten. A Closed-form Equation for Predicting the Hydraulic Conductivity of Unsaturated Soils. Soil SCI. SOC. AM. J.,1980,44(2):892~898
54.严飞,詹美礼,速宝玉.饱和-非饱和渗流计算参数分析.长江科学院院报,2004,21(5):28~31
55.赵慧丽.降雨对土体边坡稳定性的影响.铁道标准设计,2005(3):18~20
56.张国炳,袁俊平,张立伟.考虑降雨对土体强度影响的公路高边坡稳定分析.公路,2005(9):106~110
57.柴军瑞,崔中兴.渗流对土体抗剪强度的影响.西北水资源与水工程,2001,12(1):12~13
58.刘弘,王大放,杨陆,等.粘性土的含水率对其力学性质的影响.东北水利水电,2006,24(268):55~56
59. D G Fredlund, N Morgenstern, R S Widger. The Shear Strength of Unsaturated Soils. Can Geotech J,1978,15(3):313~321
60.姚裕春,姚令侃,袁碧玉.降雨条件下边坡破坏机理离心模型研究.中国铁道科学,2004,25(4):64~68
2.钱七虎.迎接我国城市地下空间开发高潮.岩土工程学报,1998,20(1):112~113
3.郑刚,顾晓鲁.高等基础工程学.基础工业出版社,2006:464~521
4.袁聚云,李镜培,楼晓明,等.基础工程设计原理.同济大学出版社,2000:181~217
5.曾广群.深基坑双排桩支护结构的设计与研究.西安建筑科技大学硕士学位论文,2005
6.丁海涛.九华山隧道工程深开挖软土地基双排桩围护桩作用研究.南京:河海大学,2006:2~5
7.吴刚.深基坑双排桩支护结构的理论分析及数值计算.北京交通大学硕士学位论文,2006
8.张富军.双排桩支护结构研究.西南交通大学硕士学位论文,2004
9.何颐华,杨斌,金宝森,等.双排护坡桩试验与计算的研究.建筑结构学报,1996,17(2):58~66
10.刘庆茶.有空间效应的土压力在双排桩支护中的应用研究.大连理工大学硕士学位论文,2006
11.汤芃,韩雪松,冯莉梅.双排桩基坑支护结构桩间土流失问题分析.基础工程设计,2007:68~70
12. K Terzaghi, R B Peck. Soil Mechanics in Engineering Practice. 2nd ed. John Wiley & Sons. Inc. New York,1967:729
13. G W Clough, J M Duncan. Finite Element Analysis of Retaining Wall Behavior. Geotechnique,1969:23~69
14. J M Duncan, C Y Chang. Nonlinear Analysis of Stress and Strain in Soil. Journal of the Soil Mechanics and Foundation Division. ASCE.1970,96(5):637~659
15. C F Leung, Y K Chow, R F Shen. Behavior of Pile Subject to Excavation-Induced Soil Movement. Journal of Geotechnical and Geo-environmental Engineering, 2000, November(947)
16. R K Rowe, K M Lee. An Evaluation of Simplified Techniques for Estimating Three-dimensional Undrained Ground Movements Due to Tunneling in Soft Soils, Canada Geotech,1992,J.29:39~52
17. R J Finno , I S Harahap, Finite Elements Analysis of HDR-4 Excavation, Journal of Geotechnical Engineering, ASCE, 1991: 1590~1609
18. R B Peck. Deep Excavations and Tunneling in Soft Ground, 7th ICSMFE, 1969: 225~229
19. C Y Ou, D C Chiou, Wu T S. Three-Dimensional Finite Element Analysis of Deep Excavation. Journal of Geotechnical Engineering, 1996, 122(5): 337~345
20. L Bjerrum, O Eide. Stability of Strutted Excavations in Clay, Geotechnique, 1956, 6(1): 32~47
21. P T Brown, J R Booker, Finite Element Analysis of Excavation. Computer and Geotechnics, ASCE, 1985: 207~220
22. S K Bose, N N Som. Parametric Study of a Braced Cut by Finite Element Method. Computer and Geotechnics,1998, 22(2):91~107
23. K M Lee, R K Rowe. An Analysis for Three Dimensional Ground Movements : The Thunder Bay Tunnel, Canada Geotech, 1991, (28): 25~41
24.张弥.深基坑开挖中双排桩支护结构的应用与探讨.地基处理,1993,4(3):42~47
25.程知言,裘慰伦,张可能,等.双排桩支护结构设计计算方法探讨.地质与勘探,2001,37(2):88~93
26.余志成,施文华.深基坑支护设计与施工.中国建筑工业出版社,1997
27.黄强.深基坑支护工程设计技术.北京:中国建筑工业出版社,1995
28.熊巨华.一类双排桩支护结构的简化计算方法.勘察科学技术,1999,(2):32~34
29.万智,王贻荪,李刚.双排桩计算结构的分析与计算.湖南大学学报.,2001,(1)
30.戴智敏,阳凯凯.深基坑双排桩支护结构体系受力分析与计算.信阳师范学院学报,2002,15(3):348~352
31.蒋波.挡土结构土拱效应及土压力理论研究.浙江大学博士学位论文,2005
32.刘钊.双排支护桩结构的分析及实验研究.岩土工程学报,1992,14(5):76~80
33.曹俊坚,平杨,朱长歧,等.考虑圈梁空间作用的深基坑双排桩支护结构计算方法研究.岩石力学与工程学报,1999,18(6):709~712
34.平杨,白世伟.深基坑双排桩空间协同计算理论及位移反应分析.土木工程学报,2001(4):79~82
35.郑刚,李欣,刘畅,等.考虑桩土相互作用的双排桩分析.建筑结构学报,2004,25(1):99~106
36.蔡袁强,阮连法,吴世明,等.软粘土地基基坑开挖中双排桩式围护结构数值分析与工程应用.建筑结构学报,1999,20(4):65~71
37.吴海玲,张锡增,吴增海,沙同举.深基坑双排灌注桩支护结构分析方法,济南大学学报自然科学版,2003,17(2):138~141
38.应宏伟,初振环.深基坑带撑双排桩支护结构有限元分析.岩石力学与工程学报,2007,26(s2):4325~4331
39.杨靖.考虑尺寸效应的双排桩的有限元分析.天津:天津大学,2006:22~27
40.谢定义,姚仰平,党发宁.高等土力学.高等教育出版社,2008:291~361
41. Abaqus, Abaqus Standard User's Manuals
42. Abaqus, Abaqus Analysis User's Manuals
43.李广信.高等土力学.清华大学出版社,2002:416~419
44.龚晓南.土工计算机分析.北京:中国建筑工业出版社,2000:64~83
45.屈智炯.土的塑性力学.成都:成都科技大学出版社,1987:116~137
46.钱家欢,殷宗泽.土工原理与计算.北京:中国水利水电出版社,1994:157~158
47.徐学燕,邱明国.高等土力学.哈尔滨:哈尔滨工业大学出版社,2008:39~52
48.陈惠发, A.F.萨里普.弹性与塑性力学.北京:中国建筑工业出版社,2004:225~226
49.薛守义.高等土力学.北京:中国建材工业出版社,2007:69~76
50.郑颖人,沈珠江,龚晓南.岩土塑性力学原理.北京:中国建筑工业出版社,2002:124~133
51.程金茹,郭择德,郭大波.非饱和土壤特性参数获取方法.水文地质工程地质,1996,(2):9~13
52.吕殿青,邵明安.非饱和土壤水力参数的模型及确定方法.应用生态学报,2004,15(1):163~166
53. M T Van Genuchten. A Closed-form Equation for Predicting the Hydraulic Conductivity of Unsaturated Soils. Soil SCI. SOC. AM. J.,1980,44(2):892~898
54.严飞,詹美礼,速宝玉.饱和-非饱和渗流计算参数分析.长江科学院院报,2004,21(5):28~31
55.赵慧丽.降雨对土体边坡稳定性的影响.铁道标准设计,2005(3):18~20
56.张国炳,袁俊平,张立伟.考虑降雨对土体强度影响的公路高边坡稳定分析.公路,2005(9):106~110
57.柴军瑞,崔中兴.渗流对土体抗剪强度的影响.西北水资源与水工程,2001,12(1):12~13
58.刘弘,王大放,杨陆,等.粘性土的含水率对其力学性质的影响.东北水利水电,2006,24(268):55~56
59. D G Fredlund, N Morgenstern, R S Widger. The Shear Strength of Unsaturated Soils. Can Geotech J,1978,15(3):313~321
60.姚裕春,姚令侃,袁碧玉.降雨条件下边坡破坏机理离心模型研究.中国铁道科学,2004,25(4):64~68