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学者姓名：陈林靖
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Abstract ：
To combine the advantages of the Mohr-Coulomb and the Duncan-Chang models, a new model called the nonlinear elastic-perfectly plastic model was established. In the numerical implementation of this model, a newly developed smoothing technique for yield and plastic potential surfaces was employed to accurately fit the side face of the hexagonal pyramid surface of the Mohr-Coulomb criterion. A user material subroutine was developed in Abaqus and was verified by modeling a conventional triaxial test of a soil specimen with the feature of a nonlinear elastic-perfectly plastic model. Finally, to further validate the applicability of this model and its subroutine, the 3D numerical simulation of a relatively complex deep excavation project was performed, and the results were compared with measured data, the results determined by the method recommended in the current code, and the results of the Mohr-Coulomb and Duncan-Chang models. The comparison demonstrates that the results of this new model were the closest to the measurements.
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| GB/T 7714 | Xu, X. , Dai, Z-H , Chen, L-J et al. Nonlinear Elastic-Perfectly Plastic Model of Soil and its Numerical Implementation and Application [J]. | SOIL MECHANICS AND FOUNDATION ENGINEERING , 2022 , 59 (3) : 215-223 . |
| MLA | Xu, X. et al. "Nonlinear Elastic-Perfectly Plastic Model of Soil and its Numerical Implementation and Application" . | SOIL MECHANICS AND FOUNDATION ENGINEERING 59 . 3 (2022) : 215-223 . |
| APA | Xu, X. , Dai, Z-H , Chen, L-J , Xu, X-T . Nonlinear Elastic-Perfectly Plastic Model of Soil and its Numerical Implementation and Application . | SOIL MECHANICS AND FOUNDATION ENGINEERING , 2022 , 59 (3) , 215-223 . |
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滨海地区风化岩层中高地下水位对地下工程的影响是长期被关注的热点问题.从岩土材料应力-渗流-损伤完全耦合作用下的弹塑性特点出发,提出一种适用于风化岩层的流固耦合弹塑性损伤本构模型.考虑岩土材料抗拉性能和抗压性能的差异,选取修正的Mohr-Coulomb破坏准则作为岩土介质的塑性理论模型,采用有效应力空间进行应力-应变计算,把塑性计算与损伤计算进行解耦,并对有效应力进行谱分解,分析了拉、压不同状态应力下岩土体材料损伤演化的不同规律,利用得到的应力、应变和损伤变量,与介质的渗流参数建立相应的关系,实现了应力-渗流-损伤的完全耦合.此外,基于Abaqus软件平台及回映算法编制了相应的非线性程序,结合算例将所得计算结果进行了系统分析,初步验证了该理论的可靠与合理性.研究成果可为滨海城市中深基坑开挖诱发地层渗透破坏等灾害的控制提供理论依据.
Keyword ：
损伤模型 损伤模型 有效应力 有效应力 流固耦合 流固耦合 破坏准则 破坏准则 风化岩 风化岩
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| GB/T 7714 | 许德祥 , 黄明 , 陈林靖 et al. 滨海高水位下渗透性风化岩的损伤模型研究 [J]. | 自然灾害学报 , 2017 , 26 (6) : 147-154 . |
| MLA | 许德祥 et al. "滨海高水位下渗透性风化岩的损伤模型研究" . | 自然灾害学报 26 . 6 (2017) : 147-154 . |
| APA | 许德祥 , 黄明 , 陈林靖 , 沈启炜 , 柴元四 , 闫冬雪 . 滨海高水位下渗透性风化岩的损伤模型研究 . | 自然灾害学报 , 2017 , 26 (6) , 147-154 . |
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Abstract ：
位于斜坡顶面的复合受荷桩,除受水平及竖向荷载共同作用产生的交叉影响外,还需考虑边坡效应,其承载力特性存在多种影响因素相互交叉作用,复杂程度远高于水平地面受荷桩.本文采用三维有限元软件对坡顶复合受荷桩进行多方面的数值模拟分析,研究发现同级荷载下随复合荷载加载角度增加其极限承载力呈先减小后增大的规律;竖向荷载对桩身水平位移的影响大于其对内力的影响;桩周均布土压力增大将使得桩身位移及内力随之增大;随临坡距增加边坡的影响作用将减小.
Keyword ：
坡顶面 坡顶面 复合荷载 复合荷载 影响因素 影响因素 数值模拟 数值模拟
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| GB/T 7714 | 陈林靖 , 郑俊 , 余其凤 . 坡顶面复合荷载刚性短桩工程设计要素分析 [J]. | 工程地质学报 , 2017 , 25 (6) : 1593-1602 . |
| MLA | 陈林靖 et al. "坡顶面复合荷载刚性短桩工程设计要素分析" . | 工程地质学报 25 . 6 (2017) : 1593-1602 . |
| APA | 陈林靖 , 郑俊 , 余其凤 . 坡顶面复合荷载刚性短桩工程设计要素分析 . | 工程地质学报 , 2017 , 25 (6) , 1593-1602 . |
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To overcome the defects of the single parameter m method which the current specification recommended, put the composite stiffness principle and bi-parameter method that applied to piles subjected to laterally concentrated loads extended to calculate the deformation and internal force on internal braces retaining structure in deep excavation. Based on the principle and the method, the modified finite difference solution of beam on elastic foundation was presented. In addition, the incremental method was introduced to consider the dynamic construction process. The composite stiffness EI and bi-parameters m and n were obtained through the back analyses from the field measurement. The result showed that both the calculated horizontal displacement and bending moment by the method proposed in this paper were in good agreement with the measured data. In contrast, the result by the current single-parameter method was unsatisfactory. The parameters obtained through the back analyses can be applied to the uniform structures in the same foundation pit or similar retaining structures and engineering geological conditions in the same areas. Undoubtedly it can obtain more accurate results than the current single parameter method. © 2016, Science Press. All right reserved.
Keyword ：
Composite materials Composite materials Excavation Excavation Finite difference method Finite difference method Stiffness Stiffness
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| GB/T 7714 | Chen, Linjing , Sun, Yongjia , Wang, Zhigang . Research of finite difference method on retaining structures with internal braces in deep excavation engineering [J]. | Chinese Journal of Rock Mechanics and Engineering , 2016 , 35 : 3315-3322 . |
| MLA | Chen, Linjing et al. "Research of finite difference method on retaining structures with internal braces in deep excavation engineering" . | Chinese Journal of Rock Mechanics and Engineering 35 (2016) : 3315-3322 . |
| APA | Chen, Linjing , Sun, Yongjia , Wang, Zhigang . Research of finite difference method on retaining structures with internal braces in deep excavation engineering . | Chinese Journal of Rock Mechanics and Engineering , 2016 , 35 , 3315-3322 . |
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为克服现行规范建议采用单参数m法的缺点,将分析水平推力桩的综合刚度原理和双参数法延伸至作用有水平分布荷载的基坑内撑式支护结构变形和内力计算中,建立一种基于此原理和方法的改进的弹性地基梁有限差分算法。此外,为考虑动态施工过程,引入增量法对各工况进行计算分析,并根据现场实测数据,反演出合适的综合刚度和双参数。计算结果表明,该方法得到的水平位移和弯矩,均与实测结果吻合良好,而采用单参数m法却很难使支护结构的位移和内力同时较好地与实测值相符。反分析所得的综合刚度和地基抗力双参数,可应用于同一基坑工程相同结构或同一地区工程地质条件和支护结构相似的设计计算,无疑可获得较现行单参数法更为准确的设计计算结果。
Keyword ：
内撑式支护结构 内撑式支护结构 基坑工程 基坑工程 增量法 增量法 有限差分算法 有限差分算法 综合刚度原理和双参数法 综合刚度原理和双参数法
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| GB/T 7714 | 陈林靖 , 孙永佳 , 王志刚 . 深基坑内撑式支护结构的有限差分算法研究 [J]. | 岩石力学与工程学报 , 2016 , 35 (S1) : 3315-3322 . |
| MLA | 陈林靖 et al. "深基坑内撑式支护结构的有限差分算法研究" . | 岩石力学与工程学报 35 . S1 (2016) : 3315-3322 . |
| APA | 陈林靖 , 孙永佳 , 王志刚 . 深基坑内撑式支护结构的有限差分算法研究 . | 岩石力学与工程学报 , 2016 , 35 (S1) , 3315-3322 . |
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为提高外露段较长的桩在横向和竖向荷载共同作用下变形和内力的计算精度和效率,基于综合刚度原理和双参数法推导可考虑桩的纵横弯曲,即计及竖向荷载(包括桩顶竖向力及桩身自重和桩侧摩阻力)对弯曲变形影响的有限差分解,采用MATLAB程序语言编制相应的计算程序。与模型试验数据或现有方法工程实例计算结果的比较验证了该法的可靠性,同时还表明该方法比基于相同原理的杆系有限元法更方便快捷。研究结果表明:对于外露长度和桩顶竖向荷载较大的桩,重力二阶效应是不容忽视的,且竖向荷载不仅会增大桩身弯矩,还会导致桩身剪力的增大,现有方法未体现其对剪力的影响,是偏于不安全的,在纵横弯曲桩的设计计算中应引起重视。
Keyword ：
双参数法 双参数法 变形和内力 变形和内力 有限差分法 有限差分法 桩基工程 桩基工程 纵横弯曲桩 纵横弯曲桩 综合刚度原理 综合刚度原理
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| GB/T 7714 | 陈林靖 , 余其凤 , 戴自航 . 纵横弯曲桩计算的综合刚度和双参数法的有限差分解 [J]. | 岩石力学与工程学报 , 2016 , 35 (03) : 613-622 . |
| MLA | 陈林靖 et al. "纵横弯曲桩计算的综合刚度和双参数法的有限差分解" . | 岩石力学与工程学报 35 . 03 (2016) : 613-622 . |
| APA | 陈林靖 , 余其凤 , 戴自航 . 纵横弯曲桩计算的综合刚度和双参数法的有限差分解 . | 岩石力学与工程学报 , 2016 , 35 (03) , 613-622 . |
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Abstract ：
为克服现行规范建议采用单参数m法的缺点,将分析水平推力桩的综合刚度原理和双参数法延伸至作用有水平分布荷载的基坑锚拉式支护结构变形和内力计算中,建立一种基于此原理和方法的改进的弹性地基梁有限差分算法.此外,为考虑动态施工过程,引入增量法对各工况进行计算分析,并根据现场实测数据,反演出合适的综合刚度和双参数.研究结果表明:该方法得到的水平位移和弯矩,均与实测结果吻合良好,而采用单参数m法却很难使支护结构的位移和内力同时较好地与实测值相符.文中反分析所得的综合刚度和地基抗力双参数,可应用于同一基坑工程相同结构或同一地区工程地质条件和支护结构相似的设计计算,无疑可获得较现行单参数法更为准确的设计计算结果.
Keyword ：
增量法 增量法 有限差分算法 有限差分算法 综合刚度原理和双参数法 综合刚度原理和双参数法 锚拉式支护结构 锚拉式支护结构
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| GB/T 7714 | 陈林靖 , 孙永佳 , 王志刚 . 深基坑锚拉式支护结构的有限差分算法研究 [J]. | 铁道科学与工程学报 , 2016 , 13 (2) : 276-282 . |
| MLA | 陈林靖 et al. "深基坑锚拉式支护结构的有限差分算法研究" . | 铁道科学与工程学报 13 . 2 (2016) : 276-282 . |
| APA | 陈林靖 , 孙永佳 , 王志刚 . 深基坑锚拉式支护结构的有限差分算法研究 . | 铁道科学与工程学报 , 2016 , 13 (2) , 276-282 . |
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在现行基坑规范建议的单参数法的基础上，推导了基坑悬臂支护桩双参数弹性地基有限差分法，将支护桩视为整体，等距离离散化，采用统一的有限差分格式以简化求解格式，并对计算出的土反力超过极限被动土压力的部分进行应力修正，有效地提高了计算精度与效率。以实际工程为例，根据现场监测值反演出地基抗力双参数 m 和 n，将有限差分法的计算值与实测数据进行对比，结果显示吻合良好。从而说明在满足相同精度的条件下，该有限差分法更简便，更具优势。同时讨论了抗剪强度参数及嵌固深度等因素对应力修正的影响，获得了一些有益于工程的结论。
Keyword ：
双参数弹性地基梁法 双参数弹性地基梁法 应力修正 应力修正 悬臂支护桩 悬臂支护桩 有限差分法 有限差分法
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| GB/T 7714 | 陈林靖 , 王志刚 , 戴自航 . 基坑悬臂支护桩的双参数有限差分算法研究 [J]. | 工程地质学报 , 2016 , 24 (6) : 1222-1229 . |
| MLA | 陈林靖 et al. "基坑悬臂支护桩的双参数有限差分算法研究" . | 工程地质学报 24 . 6 (2016) : 1222-1229 . |
| APA | 陈林靖 , 王志刚 , 戴自航 . 基坑悬臂支护桩的双参数有限差分算法研究 . | 工程地质学报 , 2016 , 24 (6) , 1222-1229 . |
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运用 ABAQUS 软件和二次开发的非线性弹性邓肯－张模型按照三维实体单元、壳单元、梁单元考虑接触相互作用的耦合有限元法，建立福州一典型软土基坑工程整体三维有限元分析模型，采用室内 K0固结试样的邓肯－张参数，按总应力分析法对基坑开挖施工过程进行了数值模拟，研究结果表明：基坑的空间效应明显，较之规范建议“m”法，与现场实测值吻合良好。在此基础上，将基坑开挖施工可能影响到的周边建（构）筑物体现于模型中，则可较好地揭示基坑开挖可能对其造成的影响，为保护周边建（构）筑物的支护方案设计提供理论依据。
Keyword ：
三维实体有限元 三维实体有限元 周围建筑物 周围建筑物 基坑 基坑 软土地区 软土地区 邓肯 -张模型 邓肯 -张模型
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| GB/T 7714 | 陈林靖 , 余其凤 , 戴自航 . 福州某软土地区深基坑开挖对周围建筑物影响的三维有限元分析 [J]. | 铁道科学与工程学报 , 2015 , (1) : 79-85 . |
| MLA | 陈林靖 et al. "福州某软土地区深基坑开挖对周围建筑物影响的三维有限元分析" . | 铁道科学与工程学报 1 (2015) : 79-85 . |
| APA | 陈林靖 , 余其凤 , 戴自航 . 福州某软土地区深基坑开挖对周围建筑物影响的三维有限元分析 . | 铁道科学与工程学报 , 2015 , (1) , 79-85 . |
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A series of stress path tests on typical soft soils (silt and organic silty clay) in the influence range of foundation pit in Fuzhou city were conducted by using triaxial apparatus with stress and strain control in order to research the stress-strain behaviours of unloading and loading caused by excavation and retaining structure of foundation pit. Compared with the results of triaxial tests between normal consolidation and K0 consolidation samples in the same confining pressure, it is indicated that there are large differences in deformation and strength. Based on the results of K0consolidated triaxial tests, Duncan-Chang parameters were figured out and the methods of certification of each parameter in the model were put forward. At the same time, comparison with model parameters obtained by normal consolidation samples showed that some parameters had significant difference; and they decided the difference of stress-strain relationship. Duncan-Chang model parameters were suggested to obtained through triaxial loading and unloading test by K0 consolidation samples for the sake of satisfying numerical simulation analysis of foundation pit engineering. Duncan-Chang parameters of typical soft soils offered by the tests can be referred to numerical simulation of foundation pit engineering in Fuzhou city or other similar strata sites.
Keyword ：
Foundations Foundations Numerical models Numerical models Soils Soils Stress-strain curves Stress-strain curves Testing Testing Unloading Unloading
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| GB/T 7714 | Chen, Lin-Jing , Dai, Zi-Hang , Liu, Zhi-Wei . Experimental study of stress path of soft soils in influence range of foundation pit [J]. | Rock and Soil Mechanics , 2011 , 32 (11) : 3249-3257 . |
| MLA | Chen, Lin-Jing et al. "Experimental study of stress path of soft soils in influence range of foundation pit" . | Rock and Soil Mechanics 32 . 11 (2011) : 3249-3257 . |
| APA | Chen, Lin-Jing , Dai, Zi-Hang , Liu, Zhi-Wei . Experimental study of stress path of soft soils in influence range of foundation pit . | Rock and Soil Mechanics , 2011 , 32 (11) , 3249-3257 . |
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