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Building foundation settlement in groundwater lowering on sliding territory of Lagerny Garden in Tomsk 托木斯克Lagerny花园滑动区地下水位下降中的建筑地基沉降
IF 0.1 Pub Date : 2023-06-25 DOI: 10.31675/1607-1859-2023-25-3-143-150
S. V. Yushchube, A. Tarasov, A. S. Ustyugov
Groundwater lowering is a method of stabilizing landslide slopes. To date, the effect of water reduction on the technical condition of buildings has not been sufficiently studied. This may negatively affect the technical condition of buildings due to the development of additional deformation of foundations and foundation soils.Purpose: The aim of this work is to assess the impact of cased hole with filters on the technical condition of buildings in the area of groundwater lowering.Methodology/approach: Long-term field observations of the groundwater level at the water supply site; monitoring of the technical condition of buildings; analysis and generalization of the data obtained.Research findings: Based on annual monitoring of the building height, monitoring of changes in the building state and the engineering and geological analysis are performed in the period from 1987 to 2020. It is found that groundwater lowering leads to building deformation and a decrease in its technical condition due to nonuniform soil compaction in this area.Research implication: Groundwater lowering near buildings can significantly affect their technical condition due to the soil compaction even at a considerable distance from the waterlowering devices. In developing groundwater lowering projects, special attention should be paid to heterogeneity of the ground layer on the building site and its impact on the formation of relative deformation of buildings.
降低地下水是稳定滑坡边坡的一种方法。迄今为止,节水对建筑技术条件的影响研究还不够充分。这可能会由于基础和基础土的附加变形的发展而对建筑物的技术状况产生负面影响。目的:评价带过滤器的套管井对地下水位下降地区建筑物技术条件的影响。方法/方法:长期实地观察供水地点的地下水位;监测建筑物的技术状况;对所得数据进行分析和归纳。研究成果:在对建筑高度进行年度监测的基础上,对1987 - 2020年的建筑状态变化进行了监测和工程地质分析。研究发现,由于该地区土壤压实不均匀,地下水降低导致建筑物变形,使其技术条件下降。研究意义:建筑物附近的地下水位下降,即使在距离降水装置相当远的地方,也会因土壤压实而显著影响建筑物的技术状况。在开展地下水位降低工程时,应特别注意建筑场地地层的非均质性及其对建筑物相对变形形成的影响。
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引用次数: 0
MgAl2O4-based glass ceramics synthesized by thermal plasma melting 热等离子体熔融法制备mgal2o4基玻璃陶瓷
IF 0.1 Pub Date : 2023-06-25 DOI: 10.31675/1607-1859-2023-25-3-151-161
V. Shekhovtsov
The relevance of research and application of glass-ceramic materials based on spinel (MgAl2O4) is due to its unique properties such as strength, heat resistance, and high thermal conductivity. These properties make spinel a popular material for creating hi-tech products and coatings.The paper presents the experimental results of the production spinel-based glass ceramics with the silicon dioxide content 10 to 50 wt.%. Thermal plasma melting is used obtain glassceramic samples, at 10 kW power and 90 s melting time. The obtained samples are studied by XRF, EDX, IRFS, SEM methods.It is shown that the introduction of SiO2 in the amount of not over 20 wt.% into the mixture with stoichiometric spinel, phase transformations with the formation of binary 2MgO·SiO2, MgO·SiO2, 3Al2O3·2SiO2 compounds do not occur. With increasing SiO2 content from 30 to 50 wt.%, the effect from SiO2 is significant, a quasi-amorphous phase appears in the material matrix. At the same time, the SiO2 content of 30 wt.% provides weak intensity of the stoichiometric crystalline phase MgAl2O4 at 2θ = 36.6, 44.7, 59.3, 65.4 degrees. Samples with the SiO2 content 40 to 50 wt.% are X-ray amorphous. In this case, the diffusion halo narrows due to the dominance of Si4+ during the lattice formation. This phenomenon is also confirmed by IRFS results.Based on SEM observations, a complete dissolution of the MgAl2O4 crystalline phase occurs. When the content of SiO2 is 30 to 40 wt.%, dissolution of the spinel crystalline phase is accompanied by the formation of local regions rich in Mg and Al, i.e., differentiation proceeds in the condensed phase.The research results will be of interest for the development of heat-shielding materials, and can be used for the catalyst development, in electronics and other industries producing hi-tech ceramics.
基于尖晶石(MgAl2O4)的玻璃陶瓷材料的研究和应用的相关性是由于其独特的性能,如强度、耐热性和高导热性。这些特性使尖晶石成为制造高科技产品和涂料的热门材料。本文介绍了生产二氧化硅含量为10 ~ 50%的尖晶石基玻璃陶瓷的实验结果。采用热等离子体熔炼法获得玻璃陶瓷样品,功率为10kw,熔炼时间为90s。用XRF、EDX、IRFS、SEM等方法对所得样品进行了研究。结果表明,在化学计量尖晶石混合物中引入不超过20wt .%的SiO2,不会发生二元2MgO·SiO2、MgO·SiO2、3Al2O3·2SiO2化合物的相变。当SiO2含量从30 wt.%增加到50 wt.%时,SiO2的作用显著,在材料基体中出现准非晶相。同时,当SiO2含量为30 wt.%时,MgAl2O4在2θ = 36.6、44.7、59.3、65.4℃时的化学计量晶相强度较弱。SiO2含量为40 ~ 50wt .%的样品为x射线无定形。在这种情况下,由于Si4+在晶格形成过程中占主导地位,扩散晕缩小。IRFS的结果也证实了这一现象。SEM观察表明,MgAl2O4晶相完全溶解。当SiO2含量为30 ~ 40 wt.%时,尖晶石晶相的溶解伴随着富Mg和富Al的局部区域的形成,即在凝聚相中进行分异。研究结果对热屏蔽材料的开发具有重要意义,并可用于催化剂开发,电子和其他生产高科技陶瓷的行业。
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引用次数: 1
Concentrated effect of drying agents on mechanical performance of clay soil 干燥剂对粘性土力学性能的集中影响
IF 0.1 Pub Date : 2023-06-25 DOI: 10.31675/1607-1859-2023-25-3-169-184
E. N. Alkaev, A. Lunev
In modern construction, more and more attention is paid to the roadbed quality. At the same time, in most regions of the Russian Federation there is a shortage of natural building materials of the required quality. In this regard, methods of stabilizing natural clay soils should be developed to satisfy the regulatory documentation.Purpose: The chemical additive effect on mechanical properties of clay soil.Methodology: The proposed method of concentrated effect of drying agents (lime, active fly ash) can potentially improve the mechanical performance of clay soils, i.e., strengthen the soil. Compressive strength testing of clay soil (light powdery loam) includes its treatment in hydrated lime in the amount of 2, 4 and 6 wt.%, hydrated high-calcium fly ash in the amount of 4, 8 and 12 wt.%, and a combination of slaked lime and chemical additives-accelerators (CaCl2, FeSO4, NaOH) in the amount of 0.5 and 1.0 % of the dry soil mass.Research findings: Even small amounts of lime improve the clay soil strength, which exceeds the effect from the fly ash introduction by 194 %. CaCl2 and NaOH additives significantly accelerate the strength gain. The introduction of FeSO4 improves the strength gain kinetics at the first stage (up to 7 days) and further causes a complete destruction of the material structure. The compaction also shows a significant decrease in the tensile strength during the time between the dry agent introduction and compaction.
在现代建设中,路基质量越来越受到人们的重视。与此同时,在俄罗斯联邦的大多数地区,缺乏所需质量的天然建筑材料。在这方面,应该开发稳定天然粘土的方法,以满足规范性文件。目的:研究化学添加剂对粘土力学性能的影响。方法:提出的干燥剂(石灰、活性粉煤灰)的浓缩效应方法可以潜在地改善粘土的力学性能,即加强土壤。粘土(轻粉状壤土)的抗压强度试验包括:在含水量为2、4、6 wt.%的水化石灰中处理,在含水量为4、8、12 wt.%的水化高钙粉煤灰中处理,以及在干土质量的0.5、1.0%的水化石灰和化学添加剂—促进剂(CaCl2、FeSO4、NaOH)的组合中处理。研究发现:即使少量的石灰也能提高粘土的强度,其效果比粉煤灰的引入提高了194%。CaCl2和NaOH添加剂显著促进了强度的增加。FeSO4的引入改善了第一阶段(长达7天)的强度获得动力学,并进一步导致材料结构的完全破坏。在干剂加入和压实之间的这段时间内,拉伸强度也有明显的下降。
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引用次数: 0
Efficiency coefficient of water supply and removal as an assessment factor of further operation 供水和排水效率系数作为进一步运行的评价因素
IF 0.1 Pub Date : 2023-06-25 DOI: 10.31675/1607-1859-2023-25-3-162-168
O. Prodous, D. I. Shlyichkov
During operation, pipeline hydraulic characteristics change due to the presence of sedimentary layers in pipes. The efficiency coefficient in an important parameter for the evaluation of the pipeline operation.Purpose: The aim of this work is to prove the necessity of using the efficiency coefficient in the hydraulic analysis of water supply and removal with internal sedimentary layers in pipes in order to predict their hydraulic characteristics with any (measured) thickness of the sedimentary layer.Methodology: Dependences used herein are repeatedly published by the authors.Research findings: Calculation tables are developed to design the reference manual "Calculation tables for hydraulic analysis of water removal in pipes with sedimentary layers".Practical implication: The proposed values of the efficiency coefficient of water supply and removal can be used in hydraulic calculations to predict the hydraulic potential of pipes with sedimentary layers.
在运行过程中,由于管道中存在沉积层,导致管道水力特性发生变化。效率系数是评价管道运行状况的一个重要参数。目的:本工作的目的是证明在管道内沉积层给水和排水的水力分析中使用效率系数的必要性,以预测其在任何(测量)沉积层厚度下的水力特性。方法:本文中使用的依赖项由作者反复发布。研究成果:编制计算表,设计参考手册《含沉积层管道除水水力分析计算表》。实际意义:本文提出的给排水效率系数值可用于水力学计算,预测含沉积层管道的水势。
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引用次数: 0
Engineering issues in restoration. Cultural deposit growth effect on preservation of stone churches in Tomsk 修复中的工程问题。托木斯克文化沉积物增长对石教堂保存的影响
IF 0.1 Pub Date : 2023-06-24 DOI: 10.31675/1607-1859-2023-25-3-54-69
A. Kutukov, E. N. Kolokoltseva, L. Romanova
The article explores the negative impact of the grown cultural deposit on stone monuments of Tomsk and ways of its elimination. The urgency is caused by the continuous and complex influence of the grow cultural deposit on historical buildings.Purpose: The article considers changes in urban development and conditions and new threats of monument preservation and their impact; gives recommendations for the conservation of Tomsk churches and the improvement of their territories.Methodology/approach: The literature review, the analysis of general technical state of stone monuments in view of the ground water influence on them and proposals on this influence elimination. Articles, books and conferences of various authors – archaeologists and architects – given in the references.Research findings: Recommendations are given to eliminate the negative impact of the increased cultural deposit, including the territory planning, replacement of coatings, installation of dewatering electro-osmotic devices, impervious curtains, hydrophobization of foundations, restoration of waterproofing and backsplash in compliance with specifications. The importance of informing the population about consequences of uncontrolled cultural deposit growth is noted herein.Originality: The analysis of the technical state of stone churches of Tomsk such as Aleksander Nevsky and Peter and Paul; recommendations for eliminating the negative impact of the increased cultural deposit growth.
本文探讨了日益增长的文化沉积物对托木斯克石碑的负面影响及其消除方法。日益增长的文化积淀对历史建筑产生了持续而复杂的影响。目的:考虑城市发展和条件的变化以及古迹保护的新威胁及其影响;提出了保护托木斯克教堂和改善其领土的建议。方法/方法:通过文献综述,分析地下水对石碑的影响,并提出消除这种影响的建议。文章,书籍和会议的各种作者-考古学家和建筑师-在参考资料中给出。研究结果:提出了消除文化沉积物增加的负面影响的建议,包括领土规划、更换涂料、安装脱水电渗透装置、不透水窗帘、基础疏水、恢复防水和符合规范的后挡板。在此指出了向种群通报不受控制的文化沉积物增长的后果的重要性。原创性:托木斯克亚历山大·涅夫斯基、彼得和保罗等石质教堂的技术状态分析消除文化沉积物增长增加的负面影响的建议。
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引用次数: 0
Correlation between residential area, service facilities, research and production zone of Russian science cities 俄罗斯科学城的居住区、服务设施、研究和生产区之间的相关性
IF 0.1 Pub Date : 2023-06-24 DOI: 10.31675/1607-1859-2023-25-3-70-80
E. D. Malova
Purpose: Identification of the correlation between service facilities, research and production zone of Russian science cities.Research findings: Based on the difference in the urban development, calculations include individual objects, taking into account the number of floors, rather than functional zones. The cities of Protvino, Pushchino, Chernogolovka, Fryazino, Troitsk and Koltsovo are analyzed; the population can be compared with the estimated number of new scientific towns. Despite a significant difference in the size of urban areas and the development of the research and production base, these science cities have a close ratio of housing, service facilities and research and production areas, i.e., 60, 10 and 30 %, respectively. The basic layout of science campuses does not change, while economic, demographic and scientific development is observed.Practical implication: The detected correlation can be called rational and used at the initial stage of planning a new science city.
目的:确定俄罗斯科学城的服务设施、研究和生产区之间的相关性。研究发现:基于城市发展的差异,计算包括单个对象,考虑楼层数,而不是功能区。分析了普罗维诺、普什奇诺、切尔诺戈洛夫卡、弗里济诺、特罗伊茨克和科尔佐沃等城市;人口可以与新科学城镇的估计数量进行比较。尽管城市面积和科研生产基地的发展程度存在显著差异,但这些科学城的住房、服务设施和科研生产面积的比例接近,分别为60%、10%和30%。科技型校园的基本布局没有变化,经济、人口、科学发展情况基本不变。实践意义:所发现的相关性是合理的,可用于新科学城市规划的初始阶段。
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引用次数: 0
Calculation of cylindrical mesh coatings based on equations of motion 基于运动方程的圆柱网格涂层计算
IF 0.1 Pub Date : 2023-06-24 DOI: 10.31675/1607-1859-2023-25-3-112-119
A. Siyanov, D. K. Yaroshevich
Purpose: Determination of oscillation process mechanisms affecting the coating operation and rational visualization of the results obtained.Methodology: The analysis of dynamic effects on cylindrical mesh coatings. The considered rational grid shape has a diagonal element in the middle. Numerical calculations are conducted using software.Research findings: Structures under static loads are studied. Mathematical dependencies are identified and the model of the dynamic load is proposed. Direct integration of equations of motion is carried out. Acceptable ratios are obtained for geometric parameters.Practical implication: Extreme values of force factors and parameters are recorded for the structure deformation at given time interval.Originality/value: Oscillatory processes of operating devices and mechanical failure of the attached equipment considered in using cylindrical mesh coatings in specific conditions.
目的:确定振荡过程影响涂布操作的机理,并对所得结果进行合理的可视化。方法:分析圆柱网格涂层的动态效应。所考虑的有理网格形状在中间有一个对角线元素。利用软件进行了数值计算。研究成果:对静荷载作用下的结构进行了研究。在此基础上,建立了动力载荷的数学模型。对运动方程进行了直接积分。得到几何参数的可接受比率。实用意义:记录了给定时间间隔内结构变形的力因子和参数的极值。独创性/价值:在特定条件下使用圆柱网涂层时,考虑到操作装置的振荡过程和附加设备的机械故障。
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引用次数: 0
Free vibrations of rectangular plates 矩形板的自由振动
IF 0.1 Pub Date : 2023-06-24 DOI: 10.31675/1607-1859-2023-25-3-96-111
N. A. Morozov, G. Grebenyuk, V. Maksak, A. F. Gavrilov
The paper investigates free vibrations of rectangular metal plates. The finite element method and analytical calculation are particularly used to determine the vibration frequency. The analytical calculation is based on the equation of motion of a thin rectangular plate. The asymptotic method is applied to determine the dynamic edge effect. As a result, the free vibration frequency is determined for the rectangular metal plate. The finite element analysis is performed in Lira and SolidWorks software packages. For this, a solid plate model with sensors is created to measure the free vibration frequency; the effective mass participation factor was determined.The plate vibration tests were conducted to confirm the results of analytical calculations. The method of smooth sinusoidal vibrations is used. Spectrum graphs of the plate vibrations are suggested based on the vibration acceleration of sensors. Errors are identified in the free vibration frequencies depending on the applied method. The paper does not consider frequencies with the low effective mass participation factor.
本文研究了矩形金属板的自由振动。特别采用有限元法和解析计算确定振动频率。解析计算基于矩形薄板的运动方程。采用渐近法确定动态边缘效应。从而确定了矩形金属板的自由振动频率。有限元分析在Lira和SolidWorks软件包中进行。为此,建立了一个带传感器的实体板模型来测量自由振动频率;确定了有效的群众参与系数。通过平板振动试验验证了解析计算的结果。采用平滑正弦振动的方法。根据传感器的振动加速度,给出了平板振动的频谱图。根据所采用的方法,在自由振动频率中识别误差。本文没有考虑具有低有效质量参与因子的频率。
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引用次数: 3
Graph-analytic models and space syntax tools for planning structure characterization 规划结构表征的图形分析模型和空间语法工具
IF 0.1 Pub Date : 2023-06-24 DOI: 10.31675/1607-1859-2023-25-3-39-53
D. S. Tseluiko, A. Kirpo
Purpose: The aim of the work is to identify the similarity and difference between three layouts created by the same technical specifications in order to study the design parameters, which may be inaccessible to the designer without the syntactic analysis.Methodology/approach: Different approaches are considered in relation to space as an integral structure. Entropy and integration are used for the syntactic analysis, and j-graph is used for the stepwise depth analysis. Investigated are different works, and the precise mathematical tools for the analysis of the planning structure are chosen. The paper proposes the criteria evaluation of the effectiveness of each planning structure. A graph-analytic model is created.Research findings: The method of parsing is explained in detail, with the selection of tools and spatial values that are appropriate for the objects in question. Criteria and conditions for evaluating the planning structure effectiveness are described. A further vector of work is outlined and the potential of syntactic analysis as a method of pre-project evaluation of work is shown.Originality: The paper proposes the criteria evaluation of the planning structure effectiveness. A graph-analytic model is created. 
目的:这项工作的目的是识别相同技术规范创建的三种布局之间的异同,以便研究设计参数,如果没有语法分析,设计师可能无法获得这些参数。方法/方法:考虑不同的方法与空间作为一个整体结构的关系。采用熵和积分法进行句法分析,采用j图法进行逐步深度分析。研究了不同的工程,选择了精确的数学工具来分析规划结构。本文提出了评价各规划结构有效性的标准。创建一个图分析模型。研究发现:详细解释了解析的方法,并选择了适合所讨论对象的工具和空间值。描述了评价规划结构有效性的标准和条件。概述了进一步的工作矢量,并说明了句法分析作为项目前工作评价方法的潜力。独创性:提出了规划结构有效性的评价标准。创建一个图分析模型。
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引用次数: 0
Classicism in Tyumen wooden architecture late in the 19th and early 20th centuries. Field research 19世纪末20世纪初秋明木结构建筑的古典主义风格。实地研究
IF 0.1 Pub Date : 2023-06-24 DOI: 10.31675/1607-1859-2023-25-3-81-95
V. V. Yugai, E. V. Sitnikova
Purpose: To find classical wooden buildings of the 19th and early 20th centuries in Tyumen.Methodology: Architectural and typological analyses of wooden buildings of the 19th and early 20th centuries.Research findings: The materials are developed concerning the current state of the classical wooden buildings in Tyumen, including historical and modern photographs and description of such buildings.Practical implication: The obtained results can be used to prepare lectures, reports and communications on the history of architecture in Siberia.Value: The full-scale studies of classical buildings underlie further research of wooden objects of classicism.
目的:在秋明寻找19世纪和20世纪初的古典木结构建筑。方法论:19世纪和20世纪早期木制建筑的建筑和类型学分析。研究成果:这些材料是关于秋明古典木结构建筑的现状,包括历史和现代照片以及这些建筑的描述。实际意义:所获得的结果可用于准备西伯利亚建筑史的讲座、报告和交流。价值:对古典建筑的全面研究是进一步研究古典主义木制品的基础。
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引用次数: 0
期刊
Tomsk State University Journal
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