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学者姓名：陈志波
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Abstract ：
浅埋土洞加筋路基受力机理十分复杂，为探究其变形和受力情况，将路面结构和土工格室简化为考虑抗弯刚度的有限长梁，路堤填土和路基土分别采用Kerr模型和Pasternak模型模拟，构建双梁模型，求解双梁竖向变形解析解。分别采用浅埋土洞加筋路基数值模拟结果与无土洞加筋路基室内试验结果验证双梁模型解析结果的有效性，并基于解析结果分析了深宽比、土工格室抗弯刚度和路基土弹性模量对双梁竖向变形、弯矩和剪力的影响。结果表明：深宽比和路基弹性模量对浅埋土洞加筋路基土洞区域的受力与变形有显著影响，而土工格室抗弯刚度的影响能力与路基弹性模量有关，土洞宽度决定路面结构和土工格室的剪力分布特点。
Keyword ：
加筋路基 加筋路基 双梁模型 双梁模型 变形 变形 土洞 土洞 数值分析 数值分析
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| GB/T 7714 | 吴方宇 , 陈志波 , 邓煜晨 . 浅埋土洞加筋路基变形的双梁模型解 [J]. | 武汉大学学报(工学版) , 2024 , 57 (05) : 593-600 . |
| MLA | 吴方宇 等. "浅埋土洞加筋路基变形的双梁模型解" . | 武汉大学学报(工学版) 57 . 05 (2024) : 593-600 . |
| APA | 吴方宇 , 陈志波 , 邓煜晨 . 浅埋土洞加筋路基变形的双梁模型解 . | 武汉大学学报(工学版) , 2024 , 57 (05) , 593-600 . |
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基于边界面次塑性模型，简化了模型原始加载和重加载的关系，减少了模型参数，提供了一种适用于描述砂土单向荷载和循环荷载作用下应力路径和应力-应变关系的方法。引进状态参数，从而可用一套参数统一描述不同密度砂土的力学行为。使用Mathematica软件进行简化边界面模型的单元测试，并与试验数据进行对比。结果表明：此简化边界面模型能合理模拟土体复杂的力学行为，包括土体的临界状态、单向和循环荷载下体积变形的变化、应力-应变关系、围压的变化等。
Keyword ：
剪胀关系 剪胀关系 砂土 砂土 边界面模型 边界面模型
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| GB/T 7714 | 陈锦祎 , 陈志波 , 谢永宁 et al. 砂土简化边界面本构模型 [J]. | 武汉大学学报(工学版) , 2024 , 57 (03) : 295-301 . |
| MLA | 陈锦祎 et al. "砂土简化边界面本构模型" . | 武汉大学学报(工学版) 57 . 03 (2024) : 295-301 . |
| APA | 陈锦祎 , 陈志波 , 谢永宁 , 陈前 . 砂土简化边界面本构模型 . | 武汉大学学报(工学版) , 2024 , 57 (03) , 295-301 . |
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In this study, various countermeasures used to mitigate tunnel deformations due to nearby multi-propped basement excavation in soft clay are explored by three-dimensional numerical analyses. Field measurements are used to calibrate the numerical model and model parameters. Since concrete slabs can constrain soil and retaining wall movements, tunnel movements reach the maximum value when soils are excavated to the formation level of basement. Deformation shapes of an existing tunnel due to adjacent basement excavation are greatly affected by relative position between tunnel and basement. When the tunnel is located above or far below the formation level of basement, it elongates downward-toward or upward-toward the basement, respectively. It is found that tunnel movements concentrate in a triangular zone with a width of 2 He (i.e., final excavation depth) and a depth of 1 D (i.e., tunnel diameter) above or 1 D below the formation level of basement. By increasing retaining wall thickness from 0.4 m to 0.9 m, tunnel movements decrease by up to 56.7%. Moreover, tunnel movements are reduced by up to 80.7% and 61.3%, respectively, when the entire depth and width of soil within basement are reinforced. Installation of isolation wall can greatly reduce tunnel movements due to adjacent basement excavation, especially for tunnel with a shallow burial depth. The effectiveness of isolation wall to reduce tunnel movement is negligible unless the wall reaches the level of tunnel invert. © 2024 Techno-Press, Ltd.
Keyword ：
Buildings Buildings Concrete slabs Concrete slabs Excavation Excavation Retaining walls Retaining walls Soils Soils
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| GB/T 7714 | Zheng, Jinhuo , Shen, Minglong , Tu, Shifang et al. Investigations of countermeasures used to mitigate tunnel deformations due to adjacent basement excavation in soft clays [J]. | Geomechanics and Engineering , 2024 , 36 (6) : 563-573 . |
| MLA | Zheng, Jinhuo et al. "Investigations of countermeasures used to mitigate tunnel deformations due to adjacent basement excavation in soft clays" . | Geomechanics and Engineering 36 . 6 (2024) : 563-573 . |
| APA | Zheng, Jinhuo , Shen, Minglong , Tu, Shifang , Chen, Zhibo , Ni, Xiaodong . Investigations of countermeasures used to mitigate tunnel deformations due to adjacent basement excavation in soft clays . | Geomechanics and Engineering , 2024 , 36 (6) , 563-573 . |
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Enzyme induced carbonate precipitation (EICP) based on self -extracted crude soybean urease solution (CSUS) is a promising method for soil improvement. However, the deionized water -extracted CSUS usually contains a large amount of impurities that easily lead to bioclogging during the biogrouting process, resulting in a nonuniform biomineralization effect. In this study, a purification method using inorganic flocculants is proposed to extract CSUS with relatively high purity and urease activity (UA) for EICP method. Seven commonly used inorganic flocculants were adopted in this study, including KAl(SO4)2 center dot 12H2O, AlCl3 center dot 6H2O, Al2(SO4)3 center dot 18H2O, Fe2(SO4)3, poly aluminum chloride, poly ferric sulfate, and poly aluminum ferric chloride. Three sets of tests, including CSUS extraction tests, solution tests, and sand column treatment tests, were conducted to investigate the feasibility and validity of this purification method. The test results show that inorganic flocculants could effectively reduce the turbidity of the extracted CSUS, avoid the bioclogging during biogrouting, and thus improve the biomineralization effect of the CSUS-based EICP method. Compared with deionized water -based CSUS, at least 60% of the impurities in CSUS can be removed at optimal flocculant contents when the soybean powder content is 100 g/L. On the other hand, the flocculants would also cause a reduction in the UA of the extracted CSUS. Considering the UA, turbidity, and biomineralization effect of the extracted CSUS, the optimal inorganic flocculants and their contents are recommended to be 3.0 g/L for KAl(SO4)2 center dot 12H2O, 2.0 g/L for AlCl3 center dot 6H2O, 2.5 g/L for Al2(SO4)3 center dot 18H2O under the tested conditions, respectively.
Keyword ：
Biomineralization Biomineralization Enzyme induced carbonate precipitation (EICP) Enzyme induced carbonate precipitation (EICP) Inorganic flocculant Inorganic flocculant Soybean urease Soybean urease Urease extraction Urease extraction
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| GB/T 7714 | Lai, Han-Jiang , Liu, Hui , Cui, Ming-Juan et al. Inorganic flocculant-based soybean urease extraction and its effect on biomineralization [J]. | JOURNAL OF CLEANER PRODUCTION , 2024 , 460 . |
| MLA | Lai, Han-Jiang et al. "Inorganic flocculant-based soybean urease extraction and its effect on biomineralization" . | JOURNAL OF CLEANER PRODUCTION 460 (2024) . |
| APA | Lai, Han-Jiang , Liu, Hui , Cui, Ming-Juan , Zheng, Jun-Jie , Chen, Zhi-Bo , Zhang, Zhi-Chao . Inorganic flocculant-based soybean urease extraction and its effect on biomineralization . | JOURNAL OF CLEANER PRODUCTION , 2024 , 460 . |
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文章梳理了基于孔压静力触探测试（CPTU）进行土分类的主要方法，以及国内主要规范的应用情况，指出当前缺乏针对花岗岩风化土的CPTU数据特征研究。对广州地区3个工程项目的花岗岩风化土CPTU测试数据，对照CPTU数据曲线的基本特征，分别用土类指数法、线性分类法和水运工程分类法进行分类，发现主体数据利用土类指数法可通过Q_(tn)～F_r图中lgQ_m=2.2-1.8×lgF_r分界线的位置关系，可基本判定土体是否属于花岗岩风化土；通过线性分类法的B_q～q_T土分类图能较好地判定花岗岩风化土的土性特点，但会把一部分含粗颗粒较多的粉质黏土或黏土判定为砂土；水运工程分类法中的Q_(tn)～F_r图在花岗岩风化土风化状态划分中有较好的参考作用，残积土、全风化和强风化之间的界线大约为Q_(tn)=59和109。研究表明CPTU可以用于区分花岗岩风化土和一般沉积土，也可以用于花岗岩风化土风化程度的划分。
Keyword ：
土分类 土分类 孔压静力触探测试(CPTU) 孔压静力触探测试(CPTU) 花岗岩风化土 花岗岩风化土
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| GB/T 7714 | 彭功勋 , 许韬 , 陈志波 . 花岗岩风化土孔压静力触探（CPTU）数据特征及风化状态划分 [J]. | 广东土木与建筑 , 2024 , 31 (06) : 11-17 . |
| MLA | 彭功勋 et al. "花岗岩风化土孔压静力触探（CPTU）数据特征及风化状态划分" . | 广东土木与建筑 31 . 06 (2024) : 11-17 . |
| APA | 彭功勋 , 许韬 , 陈志波 . 花岗岩风化土孔压静力触探（CPTU）数据特征及风化状态划分 . | 广东土木与建筑 , 2024 , 31 (06) , 11-17 . |
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Microbially or enzyme induced carbonate precipitation has emerged to be a new type of soil improvement method. However, it appears that the biocementation process is affected by many factors and a common understanding on the control factors on the biocement effect has not been reached. This paper attempts to identify the main factors that controlling the MICP or EICP effect through an in-depth discussion on the fundamentals of biocementation process. Similar to other cemented granular materials, biocemented soil is a structural soil composite consisting of soil skeleton and biocement force chain or biocement network. The strength and stiffness of the biocemented soil is controlled by the reinforcement effect of the biocement network on the soil skeleton or the interplay of the soil skeleton and precipitates. The contribution of the strength by soil skeleton is affected by the soil types and soil properties, while the contribution of the precipitates is through the distribution of the biocement network and the properties of the precipitates. © 2024
Keyword ：
Biocementation Biocementation Influencing factor Influencing factor Mechanism Mechanism Strength enhancement Strength enhancement
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| GB/T 7714 | Lai, H. , Ding, X. , Cui, M. et al. Factors affecting the effectiveness of biocementation of soil [J]. | Biogeotechnics , 2024 , 2 (3) . |
| MLA | Lai, H. et al. "Factors affecting the effectiveness of biocementation of soil" . | Biogeotechnics 2 . 3 (2024) . |
| APA | Lai, H. , Ding, X. , Cui, M. , Zheng, J. , Chu, J. , Chen, Z. . Factors affecting the effectiveness of biocementation of soil . | Biogeotechnics , 2024 , 2 (3) . |
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以CNKI与Web of ScienceTM(WOS)核心合集中2002-2020 年Visual MINTEQ(VM)为主题的文献作为数据来源,借助CiteSpace,从发文量、国家、机构、作者和研究热点等方面整理、归纳并评述VM在重金属形态研究中的运用热点及趋势.结果表明:1)发文量呈逐年波动增长趋势,中国的国际影响力最高,布-阿里大学、中国科学院、浙江大学软弱土与环境土工教育部重点实验室等为主要中英文发文机构,Gustafsson J P被引频次最高,作者间以国内协作为主.2)VM在重金属形态研究中的使用热点主要在模拟不同环境因子对水/土环境介质中重金属形态影响和不同水/土环境介质中重金属矿物的沉淀或溶解,以及使用 DLM、CD-MUSIC、NICA-Donnan等表面络合模型计算处理不同吸附行为.3)VM将来还可运用于沉积物中重金属迁移、生物体内重金属毒理性及大气中痕量金属络合等方面研究.
Keyword ：
CiteSpace CiteSpace Visual MINTEQ Visual MINTEQ 形态 形态 水土环境 水土环境 重金属 重金属
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| GB/T 7714 | 吴名秀 , 曾悦 , 李云琴 et al. Visual MINTEQ在水/土环境重金属形态研究中的应用与展望 [J]. | 福州大学学报（自然科学版） , 2023 , 51 (4) : 574-581 . |
| MLA | 吴名秀 et al. "Visual MINTEQ在水/土环境重金属形态研究中的应用与展望" . | 福州大学学报（自然科学版） 51 . 4 (2023) : 574-581 . |
| APA | 吴名秀 , 曾悦 , 李云琴 , 金晓英 , 陈志波 , 张新颖 . Visual MINTEQ在水/土环境重金属形态研究中的应用与展望 . | 福州大学学报（自然科学版） , 2023 , 51 (4) , 574-581 . |
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The effect of cyclic loading on the macro- and micromechanical behaviours of breakable granular materials was investigated via DEM. Breakable particle models composed of Voronoi cells with realistic shapes were con-structed. A series of confined cyclic loading tests were performed at different loading amplitudes. The macro-scopic deformation behaviours were investigated in terms of the cumulative plastic strain and dynamic resilience modulus. Then, particle breakage characteristics, including the extent of particle breakage, crack orientation distribution, breakage pattern and correlation between the particle breakage and energy input, were explored. Furthermore, micromechanical results, including the coordination number, sliding contact and contact orien-tation anisotropy, were examined. It is found that both particle breakage and cumulative plastic strain increase rapidly in the early stage of loading. In the stable state, both showed an S-shaped increase with increasing loading amplitude. This study highlights that particle breakage is one of the main sources of permanent deformation
Keyword ：
Cyclic loading Cyclic loading DEM DEM Macroscopic deformation Macroscopic deformation Micromechanical results Micromechanical results Particle breakage Particle breakage
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| GB/T 7714 | Nie, Yuxing , Gong, Jian , Fang, Chuanfeng et al. DEM study on the macro- and micromechanical behaviours of breakable granular materials under cyclic loading br [J]. | TRANSPORTATION GEOTECHNICS , 2023 , 38 . |
| MLA | Nie, Yuxing et al. "DEM study on the macro- and micromechanical behaviours of breakable granular materials under cyclic loading br" . | TRANSPORTATION GEOTECHNICS 38 (2023) . |
| APA | Nie, Yuxing , Gong, Jian , Fang, Chuanfeng , Chen, Zhibo , Huang, Chuhan . DEM study on the macro- and micromechanical behaviours of breakable granular materials under cyclic loading br . | TRANSPORTATION GEOTECHNICS , 2023 , 38 . |
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为了探究羧甲基纤维素钠(CMC)对宽叶雀稗生长和固土能力的影响,以南方地区常见的粉质黏土为研究对象,探究不同CMC含量对土的抗剪强度以及宽叶雀稗的生长高度、根系长度和固土能力的影响.试验结果表明,添加CMC会导致土颗粒聚集,从而使土中大颗粒比例增加,进而增加土壤的不均匀性.在CMC含量较低时,宽叶雀稗的发芽率、生长高度和根系长度达到最高值,随着CMC含量的增加而逐渐减小.在力学特性方面,土的抗剪强度随着CMC含量的增加而得到一定程度的提高,而CMC含量0.5%、1.5%、1.5%时宽野雀稗抗拉拔能力最好.施用少量的羧甲基纤维素钠(CMC)可促进宽叶雀稗的生长和固土能力,其含量为0.5%时为最优含量.
Keyword ：
土质改良 土质改良 宽叶雀稗 宽叶雀稗 抗剪强度 抗剪强度 抗拉拔力 抗拉拔力 羧甲基纤维素钠 羧甲基纤维素钠
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| GB/T 7714 | 江世雄 , 李熙 , 陈垚 et al. 羧甲基纤维素钠对宽叶雀稗生长与固土能力的影响 [J]. | 水利与建筑工程学报 , 2023 , 21 (5) : 204-209 . |
| MLA | 江世雄 et al. "羧甲基纤维素钠对宽叶雀稗生长与固土能力的影响" . | 水利与建筑工程学报 21 . 5 (2023) : 204-209 . |
| APA | 江世雄 , 李熙 , 陈垚 , 翁孙贤 , 王重卿 , 陈志波 et al. 羧甲基纤维素钠对宽叶雀稗生长与固土能力的影响 . | 水利与建筑工程学报 , 2023 , 21 (5) , 204-209 . |
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本发明涉及一种用于多尺寸原状土圆柱样直剪试验的大型直剪仪，包括外部框架、试样剪切盒、水平加载装置、垂直加载装置和控制系统，试样剪切盒设于外部框架中，试样剪切盒包括上、下剪切盒和底座；水平加载装置包括配置有荷重传感器的水平驱动电机、水平机械加载机构和上剪切盒连接结构，水平驱动电机安装于外部框架一内侧并经水平机械加载机构与下剪切盒接触，上剪切盒连接结构固定于外部框架另一内侧并与上剪切盒接触；垂直加载装置包括配置有荷重传感器的垂直驱动电机和垂直机械加载机构，垂直驱动电机安装于外部框架顶部下侧并向下连接垂直机械加载机构。该直剪仪有利于对现场钻探取得的原状土圆柱样进行原状样的大、中、小型室内直剪试验，提高试验的可靠性。
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| GB/T 7714 | 陈志波 , 蔡锦阳 , 杨辉 et al. 一种用于多尺寸原状土圆柱样直剪试验的大型直剪仪 : CN202111277195.0[P]. | 2021-10-30 00:00:00 . |
| MLA | 陈志波 et al. "一种用于多尺寸原状土圆柱样直剪试验的大型直剪仪" : CN202111277195.0. | 2021-10-30 00:00:00 . |
| APA | 陈志波 , 蔡锦阳 , 杨辉 , 谢永宁 , 曾旭明 , 潘生贵 . 一种用于多尺寸原状土圆柱样直剪试验的大型直剪仪 : CN202111277195.0. | 2021-10-30 00:00:00 . |
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