對(duì)于錨定式板樁墻,工程上亟需一種能夠合理確定設(shè)計(jì)參數(shù)和塑性鉸位置的雙錨板樁墻設(shè)計(jì)方法,以打破傳統(tǒng)設(shè)計(jì)方法僅適用于單錨板樁墻的局限性。已有學(xué)者對(duì)靜荷載和動(dòng)荷載作用下的懸臂式、支撐式、錨定式板樁墻的性能進(jìn)行了研究并給出了雙錨板樁墻的設(shè)計(jì)方法。本文通過對(duì)現(xiàn)有單錨板樁墻的設(shè)計(jì)方法進(jìn)行改進(jìn)優(yōu)化,提出了一種基于自由端法的雙錨板樁墻設(shè)計(jì)方法。首先,本文驗(yàn)證了已有單錨板樁墻設(shè)計(jì)方法（Das和Rowe）的正確性,并研究了土體參數(shù)對(duì)單錨板樁墻彎矩的影響。結(jié)果表明,現(xiàn)有方法有較大的局限性,對(duì)于低粘聚力黏土場地,會(huì)因方程無解而無法給出合理的計(jì)算結(jié)果。其次,本文研究了單錨支護(hù)體系樁體特性指標(biāo)的確定方法,并據(jù)此給出了支護(hù)體系樁體特性指標(biāo)與開挖深度之間的變化規(guī)律。結(jié)果發(fā)現(xiàn)對(duì)于某些特殊工況下的單錨板樁墻支護(hù)體系失效問題,樁端埋置深度的增加并不能有效改善支護(hù)體系性能,樁自身的強(qiáng)度是影響安全性的唯一因素。此外,計(jì)算結(jié)果表明傳統(tǒng)自由端法僅適用于不高于9m的擋墻。然而,低擋墻和高擋墻的設(shè)計(jì)參數(shù)是相同的。第一個(gè)錨點(diǎn)上的力可以由可靠的土壓力分布圖中獲得,將第二個(gè)錨點(diǎn)上的力（可由已有研究和土壓力圖中獲得）加倍,可以獲得合理的結(jié)構(gòu)形... 

【文章來源】：哈爾濱工業(yè)大學(xué)黑龍江省 211工程院校 985工程院校

【文章頁數(shù)】：75 頁

【學(xué)位級(jí)別】：碩士

【文章目錄】：
摘要
Abstract
Chapter 1 Introduction
    1.1 Source of the topic
    1.2 Research background and significance
    1.3 Objective of this research
    1.4 Scope of the research
    1.5 Sheet pile walls
    1.6 Types of sheet piles
        1.6.1 Cantilever sheet piles
        1.6.2 Anchored walls
    1.7 Sequence of construction of sheet piles
    1.8 The concept of plastic analysis
        1.8.1 What actually leads to the formation of the plastic hinge?
        1.8.2 Requirement for the full collapse of a beam
p, K_o, and K_a">        1.8.3 Graphical representation of K_p, K_o, and Ka

    1.9 Summary
Chapter 2 Literature on sheet piles （past to present）
    2.1 Design of retaining walls in stiff clays （Padfield and Mair, 1984）
    2.2 Gradual method （Krey, 1932 and Bowles, 1988）
    2.3 Net pressure analysis of cantilever sheet pile wall （Day, 1999）
    2.4 Principles of foundation engineering （Das, 1990）
    2.5 Numerical analysis and dissertations
        2.5.1 Analysis of model sheet pile walls with plastic hinges （Bourne-Webb et al.,2011）
        2.5.2 Comparison of finite element predictions with results from a centrifuge test representing a double anchor wall in sand （Bourne-Webb et al., 2010）
        2.5.3 Development of numerical models for geotechnical design （Smith, 2006）
        2.5.4 Numerical studies of anchored sheet pile wall behavior （Bilgin, 2010）
        2.5.5 Lateral earth pressure coefficient for anchored piles （Bilgin, 2012）
        2.5.6 Effect of wall penetration depth on the behavior of sheet pile walls （Ramadan, 2013）
        2.5.7 Numerical analysis of cantilever and anchored sheet pile walls at failure and comparison with classical methods （Torrabadella, 2013）
        2.5.8 Comparison study for the seismic evaluation of anchored sheet pile walls （Zhai, 2009）
        2.5.9 Developing a numerical model for the design of sheet pile walls （Brits,2014）
    2.6 Justification for this research
    2.7 Summary
Chapter 3 Numerical modelling of sheet pile wall
    3.1 Introduction
    3.2 The four sub-program of Plaxis 2D
        3.2.1 Geometry
        3.2.2 Calculation
        3.2.3 Output program
        3.2.4 Curves
    3.3 Modeling of soils
        3.3.1 Parameters of the Mohr-Coulomb criterion
        3.3.2 Node and stress points
    3.4 Modeling the sheet pile plate element
        3.4.1 Modeling of interface element
        3.4.2 Modeling of anchors
    3.5 Properties of the materials used in the study
        3.5.1 Material properties of subsurface soil
        3.5.2 Properties of clay soil （Modified cam clay model）
        3.5.3 Material properties of sheet piles
    3.6 Case study
    3.7 Validating the FEA results for modeling the free earth support method
    3.8 Summary
Chapter 4 Performance of sheet pile wall in clay and sand soils
    4.1 Introduction
        4.1.1 Use of symbols
    4.2 Loose sand overburden on loose sand
        4.2.1 Result of loose sand overburden overlaying loose sand
    4.3 Medium sand in medium sand
    4.4 Dense sand in dense sand
    4.5 Loose sand in silty clay
    4.6 Medium dense sand in silty clay
    4.7 Dense sand in silty clay
    4.8 Plastic hinging of sheet pile wall embedded in clay
    4.9 Comparison of results with and without surcharge loads
    4.10 Analysis of a 21-m-long tie back wall
Chapter 5 Conclusion and Recommendation
References
Acknowledgement


【參考文獻(xiàn)】：
期刊論文
[1]預(yù)應(yīng)力錨索樁板墻工程病害分析及整治措施[J]. 陳華,趙有明,張發(fā)春.  重慶交通大學(xué)學(xué)報(bào)(自然科學(xué)版). 2010(01)



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