Izvestia Vuzov Investicii Stroitel''stvo Nedvizimost''最新文献

Improving concrete quality for transport construction 提高交通施工混凝土质量

Izvestia Vuzov Investicii Stroitel''stvo Nedvizimost'' Pub Date : 2023-10-17 DOI: 10.21285/2227-2917-2023-3-492-500

O. I. Koroleva, V. S. Orlov, P. A. Shustov

{"title":"Improving concrete quality for transport construction","authors":"O. I. Koroleva, V. S. Orlov, P. A. Shustov","doi":"10.21285/2227-2917-2023-3-492-500","DOIUrl":"https://doi.org/10.21285/2227-2917-2023-3-492-500","url":null,"abstract":"The creation of a transport network with high performance characteristics of the roadbed is an urgent task in the field of road construction. Foreign practice in the construction and operation of such facilities indicates the need for research studies aimed at obtaining an optimal concrete stone structure by optimizing the concrete composition (controlling the concrete mixture properties at the microlevel) and using state-of-the-art complex additives. The technological properties of concrete mixture and concrete were studied in accordance with the requirements of the current regulatory documentation using verified equipment. The compressive strength of concrete was determined using an MS2000 testing machine (with a measuring range of up to 2000 kN and a loading error of no more than 1%). The abrasion level was estimated by the loss of the sample mass during operation of an LKI-3 device (abrasion disc). The mass water absorption was determined by variations in the sample mass during water saturation. The article presents the physical and mechanical characteristics of heavy concrete (strength, abrasion, water absorption) obtained using TechniFlow-61, TechniFlow-178 PRO, and PowerFlow-3100 additives. The results indicate the positive effect of the above additives, which can be used to decrease the water-cement ratio for obtaining concrete mixtures of a given mobility, produce concretes of a denser structure, and reduce the number of open pores. The conclusion is made about the effectiveness of new-generation additives with plasticizing and water-reducing agents for improving the technological properties of concrete mixtures, as well as the physical and mechanical characteristics of the resultant concretes.","PeriodicalId":32211,"journal":{"name":"Izvestia Vuzov Investicii Stroitel''stvo Nedvizimost''","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136078138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Current state, peculiarities and opportunities for the development of urban agriculture in different territories of Ho Chi Minh City (Vietnam) 越南胡志明市不同地区都市农业发展现状、特点与机遇

Izvestia Vuzov Investicii Stroitel''stvo Nedvizimost'' Pub Date : 2023-10-17 DOI: 10.21285/2227-2917-2023-3-581-589

Ngoc Mai Nga To

{"title":"Current state, peculiarities and opportunities for the development of urban agriculture in different territories of Ho Chi Minh City (Vietnam)","authors":"Ngoc Mai Nga To","doi":"10.21285/2227-2917-2023-3-581-589","DOIUrl":"https://doi.org/10.21285/2227-2917-2023-3-581-589","url":null,"abstract":"The development of urban agriculture is an inevitable trend for future cities, including Ho Chi Minh City, since it is one of the most important aspects for sustainable urban development aimed to ensure food security and other socio-economic and environmental benefits. The purpose of the article is to explore the issues of zoning of the existing areas in Ho Chi Minh City as well as assessing and analysing their characteristics and the level of capacity to develop urban agriculture as a basis for efficient operation of the land reserve and other city resources. In order to properly develop urban agriculture in Ho Chi Minh City, it is necessary to distinguish the features of each area of the city for efficient use of land and spaces. The present article provides some criteria and methods for zoning of the existing Ho Chi Minh City areas, evaluating and analysing their distinctive characteristics as well as the levels of urban agriculture development resource. The obtained results can serve as a basis for applying urban agriculture design models suitable for each area.","PeriodicalId":32211,"journal":{"name":"Izvestia Vuzov Investicii Stroitel''stvo Nedvizimost''","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136078134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reliability of multi-story buildings with load-bearing structures of cast reinforced concrete during the construction period 多层现浇钢筋混凝土承重结构建筑施工期间的可靠度

Izvestia Vuzov Investicii Stroitel''stvo Nedvizimost'' Pub Date : 2023-10-17 DOI: 10.21285/2227-2917-2023-3-483-491

A. K. Komarov

{"title":"Reliability of multi-story buildings with load-bearing structures of cast reinforced concrete during the construction period","authors":"A. K. Komarov","doi":"10.21285/2227-2917-2023-3-483-491","DOIUrl":"https://doi.org/10.21285/2227-2917-2023-3-483-491","url":null,"abstract":"Reinforced concrete is considered to be one of the most reliable structural materials. For this reason, it is widely used for mass construction of buildings and structures in Russia and other countries. In particular, reinforced concrete is predominantly used in the construction of multi-story buildings of any design in all Russian regions at any time of the year. Improvements in technologies, construction management and mechanical aids increase the industrialization of construction. Although this fact is generally regarded as extremely positive, it reduces the time allowed for concrete to gain the required strength characteristics. Sometimes, loads from upper structures of buildings are applied to fresh, immature concrete. Obviously, specific technical decisions are required to intensify the concrete hardening process and create favorable temperature and humidity conditions for its curing. Russian science and practical experience have a large arsenal of effective technical means for solving these problems. However, these means are reluctantly applied in practice, since this entails a rise in construction costs, even though slight. This creates a situation when unacceptable loads from the higher floors are applied to the lower floors of the building. The structures perceive static loads rather than dynamic ones, including seismic loads, with an inertial mass of tens of tons, thereby causing a risky situation at the site. This happens en masse. The problem is even more complicated in winter time. During the period of concrete thawing in spring, the entire facility can be classified as being in a metastable state. The paper considers the production circumstances associated with the above situations and proposes recommendations for their prevention.","PeriodicalId":32211,"journal":{"name":"Izvestia Vuzov Investicii Stroitel''stvo Nedvizimost''","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136077341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Technical evaluation of steel roof trusses for a large pool basin 某大型水池钢屋架技术评价

Izvestia Vuzov Investicii Stroitel''stvo Nedvizimost'' Pub Date : 2023-10-17 DOI: 10.21285/2227-2917-2023-3-501-515

А. М. Kuritsyna, V. M. Kamchatkina, M. T. Orlov

{"title":"Technical evaluation of steel roof trusses for a large pool basin","authors":"А. М. Kuritsyna, V. M. Kamchatkina, M. T. Orlov","doi":"10.21285/2227-2917-2023-3-501-515","DOIUrl":"https://doi.org/10.21285/2227-2917-2023-3-501-515","url":null,"abstract":"In this work, we carry out a technical evaluation of steel roof trusses for a large basin of the Del’fin pool in the city of Ust-Ilimsk with the purpose of determining their further operability. This task involves establishing the damage degree of building structures and the category of their technical condition based on a comparison between the actual values of quantifiable attributes and those established by the project or regulatory documents. The studied objects are represented by steel trusses with a span of 15 m, located in plan with a spacing of 6.0 m and conditionally divided into 2 groups: reinforcement trusses (F-1 and F-4) and existing trusses without reinforcement (F-2 and F-3). We analyze the technical, as-built, and operational documentation, and carry out visual and measuring control procedures. The verification calculation of the most loaded truss elements is presented (not provided in the article). According to the analysis of the obtained data, the condition of the studied steel trusses can be concluded as unacceptable and emergency. The emergency technical condition of the F-2 and F-3 trusses is due to the unprovided bearing capacity of support brace struts and insufficient length of welds, fastening the support brace struts. The unacceptable technical condition of the reinforcement trusses F-1 and F-4 is due to the insufficient length of the welds, fastening the support brace struts, as well as the deviations in a number of technical solutions, outlined in the reinforcement project, from the current norms. Recommendations on the further operability of roof structures are provided.","PeriodicalId":32211,"journal":{"name":"Izvestia Vuzov Investicii Stroitel''stvo Nedvizimost''","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136077336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Automated estimation of road facilities within 5D modeling paradigm 在5D建模范例中自动估计道路设施

Izvestia Vuzov Investicii Stroitel''stvo Nedvizimost'' Pub Date : 2023-10-17 DOI: 10.21285/2227-2917-2023-3-473-482

T. L. Dmitrieva, A. B. Chernyago

{"title":"Automated estimation of road facilities within 5D modeling paradigm","authors":"T. L. Dmitrieva, A. B. Chernyago","doi":"10.21285/2227-2917-2023-3-473-482","DOIUrl":"https://doi.org/10.21285/2227-2917-2023-3-473-482","url":null,"abstract":"The paper is aimed at considering the possibility of automated estimation of road facilities on the basis of data obtained from the bill of quantities at the design or construction stages. The authors accepted Tomita Parser as a for extracting facts and parameters from the bill of quantities. Further comparison of quantities of work with Federal Unit Rates and State Itemized Cost Estimate Standards is carried out by the program algorithm developed by the authors for calculating and estimating costs. The presented manual method for creating a database compiled on the basis of comparing the bill of quantities with the above federal regulations may be considered reliable. However, large data sets require machine learning technologies to be applied. The program algorithm considers many estimation settings, in particular, assigning the index to construction and installation works, the total coefficient to the positions by types of work (for example, performance of work on one half of the roadway), etc. The finished estimate is generated in a *.xml file and can be further integrated into the road information model and converted into *.gge format for using by the Federal autonomous institution “Main Department of State Expertise”. The results showed that all key parameters from the bill of quantities were taken into account by the program algorithm. The generated estimate considered all coefficients and prices to accurately reflect the cost of the works described in this bill.","PeriodicalId":32211,"journal":{"name":"Izvestia Vuzov Investicii Stroitel''stvo Nedvizimost''","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136077490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development and application of neural network technology in solving geodynamic problems 神经网络技术在求解地球动力学问题中的发展与应用

Izvestia Vuzov Investicii Stroitel''stvo Nedvizimost'' Pub Date : 2023-10-17 DOI: 10.21285/2227-2917-2023-3-516-525

O. M. Maximova

{"title":"Development and application of neural network technology in solving geodynamic problems","authors":"O. M. Maximova","doi":"10.21285/2227-2917-2023-3-516-525","DOIUrl":"https://doi.org/10.21285/2227-2917-2023-3-516-525","url":null,"abstract":"The present study is aimed at searching the most effective, easy-to-use method for seismic zoning, in order to consider the ongoing environmental change in real time. The study demonstrates the relevance and necessity of tackling this problem, provides characteristics and peculiarities of current microzonation methods, and discusses the problem of seismic microzoning. The paper highlights traditional and neural network approaches as two directions in solving the problem, and determines their advantages and disadvantages. In addition, the paper provides significant arguments for applying the neural network approach and defines the perspectives for the solution. An intermediate problem of geophysics is suggested to be solved using the neural network approach. The current study results involved searching networks able to provide sufficient accuracy for obtaining pictures of geological sections and conducting analysis of predicted results for a number of neural networks. Multilayer perceptron is considered to give the most reliable results. The future work is supposed to develop an algorithm for building a map of seismic microzonation by means of neural network technology.","PeriodicalId":32211,"journal":{"name":"Izvestia Vuzov Investicii Stroitel''stvo Nedvizimost''","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136077970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Inverse dynamics method in properties estimation of residual stiffness of multi-story buildings 多层建筑剩余刚度性能估计中的逆动力学方法

Izvestia Vuzov Investicii Stroitel''stvo Nedvizimost'' Pub Date : 2023-10-17 DOI: 10.21285/2227-2917-2023-3-545-554

V. I. Sobolev, I. V. Sobolev, D. A. Karmazinov

{"title":"Inverse dynamics method in properties estimation of residual stiffness of multi-story buildings","authors":"V. I. Sobolev, I. V. Sobolev, D. A. Karmazinov","doi":"10.21285/2227-2917-2023-3-545-554","DOIUrl":"https://doi.org/10.21285/2227-2917-2023-3-545-554","url":null,"abstract":"The present paper considers methods and algorithms for determining the values of horizontal stiffness of multi-story buildings based on experimental laser measurements of their natural vibrations. The developments findings are used in determining the residual stiffness of various structures in a certain operation period, subjected to intensive dynamic loading. No need for a close inspection of buildings associated with the inevitable dismantling of enclosures and emptying of the buildings is considered as an advantage of such methods for determining the stiffness parameters of buildings. Direct method for determining the horizontal stiffness of buildings by means of specified displacements and corresponding forces in their elements implies fixing of tension elements in specified nodes – mass centers of structures. However, in some cases, they fail to be implemented. The suggested approach demonstrates its potential in the inspection of a large residential area consistent of buildings under different operating conditions, thus requiring the development of an action plan to ensure the functionality of the structures. In addition, the paper demonstrates that using the dynamic low-size models in the estimation of stiffness parameters implies determining the principles of forming the types of such models.","PeriodicalId":32211,"journal":{"name":"Izvestia Vuzov Investicii Stroitel''stvo Nedvizimost''","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136078142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spatial organization of riverside territories in Irkutsk area: mid XX – early XXI centuries 伊尔库茨克河滨地区的空间组织:20世纪中期至21世纪初

Izvestia Vuzov Investicii Stroitel''stvo Nedvizimost'' Pub Date : 2023-10-17 DOI: 10.21285/2227-2917-2023-3-568-580

V. A. Ignatenkova

{"title":"Spatial organization of riverside territories in Irkutsk area: mid XX – early XXI centuries","authors":"V. A. Ignatenkova","doi":"10.21285/2227-2917-2023-3-568-580","DOIUrl":"https://doi.org/10.21285/2227-2917-2023-3-568-580","url":null,"abstract":"The paper presents a design of a scientifically-based, theoretical model for organization of riverside territories of the Irkutsk area under contemporary conditions. The work set out to analyze the factors influencing the formation of the riverside territories, problems and possible directions for necessary transformations; to systematize and adapt the current theoretical and methodological base; to develop a theoretical design model for spatial organization of the territories. The research methodology involves system and landscape-geographical approaches. Urban ecological analysis of riverside territories included analysis of spatial and strategic planning documents, field investigation of the territories, graphical analysis of world experience in terms of patterns and trends in organizing riverside territories, as well as conceptual modeling with consideration to the urbanization level of the territories. The study consists in developing the following definitions: scientific ground for spatial organization of riverside territories in urban area; global trends in organizing riverside territories in urban area; theoretical design model and perspectives for transformations in the territories. The study results include the development of a theoretical design model for the riverside territories in the Irkutsk area, enabling the growth potential and organization principles of the riverside territories to be effectively identified with consideration to their urbanization level. In addition, the authors offer a definition for the concept of “riverside territories in the urban area.”","PeriodicalId":32211,"journal":{"name":"Izvestia Vuzov Investicii Stroitel''stvo Nedvizimost''","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136078135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Main stages in the formation of residential areas in the city of Usolye-Sibirskoye 在乌索利-西比尔斯科耶市形成住宅区的主要阶段

Izvestia Vuzov Investicii Stroitel''stvo Nedvizimost'' Pub Date : 2023-10-17 DOI: 10.21285/2227-2917-2023-3-555-567

I. E. Druzhinina

{"title":"Main stages in the formation of residential areas in the city of Usolye-Sibirskoye","authors":"I. E. Druzhinina","doi":"10.21285/2227-2917-2023-3-555-567","DOIUrl":"https://doi.org/10.21285/2227-2917-2023-3-555-567","url":null,"abstract":"The present work is part of the author’s series of articles that analyze historical conditions for the formation of residential areas in the cities of the Irkutsk Oblast, their social and spatial environment, as well as the possibilities of an integrated territorial development. The study into the stages of residential development in the city of Usolye-Sibirskoye will contribute to prioritizing their modernization and preserving the historically valuable areas. In the work, the ontogeny of residential areas was determined by a retrospective analysis and a clustering method in accordance with the key periods of historical development. Further, using empirical research methods and stratified sampling, residential types were revealed, the dominant characteristics were identified, and their description was given. An analysis of residential types was carried out with the provision of absolute and relative indicators. The performed study identified the four main stages of residential development. A generalized analysis of 17 residential development types was carried out. The data is tabulated. The results of the study in the form of a report were presented at the 24th session of the International Baikal Winter Urban Planning University in 2023 at the Irkutsk National Research Technical University. During the study of the living environment in the city of Usolye-Sibirskoye, the relationship between the main historical and political events and the state of the society, which were reflected in the formation of a particular residential development type, was established. Guided by the materials of the article, urban planners and architects will be able to focus on the most valuable fragments of existing buildings and take them into account during further planning of integrated territorial development. The article contains the schemes and results of the conducted research.","PeriodicalId":32211,"journal":{"name":"Izvestia Vuzov Investicii Stroitel''stvo Nedvizimost''","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136078137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Configuration of geoinformation system for monitoring and forecasting technosphere hazards on critical infrastructure 关键基础设施技术圈灾害监测和预报地理信息系统配置

Izvestia Vuzov Investicii Stroitel''stvo Nedvizimost'' Pub Date : 2023-10-17 DOI: 10.21285/2227-2917-2023-3-526-53

U. D. Niyazgulov, E. S. Tshovrebov, V. N. Beznosov, V. F. Tomilin

{"title":"Configuration of geoinformation system for monitoring and forecasting technosphere hazards on critical infrastructure","authors":"U. D. Niyazgulov, E. S. Tshovrebov, V. N. Beznosov, V. F. Tomilin","doi":"10.21285/2227-2917-2023-3-526-53","DOIUrl":"https://doi.org/10.21285/2227-2917-2023-3-526-53","url":null,"abstract":"The paper is aimed at developing a system configuration for GIS-monitoring of the technical and environmental condition of living facilities for the subsequent prediction of technosphere threat in the format of prevention of natural and anthropogenic emergencies, as well as their environmental consequences. The methodology involved the system analysis of information obtained from monitoring the interrelated technical and resource-environmental parameters. The analysis considered the impact of various conditions, as well as limitations in the functioning of the living facilities. The obtained results underlay long-term and medium-term forecasts of options and scenarios for the development of hazardous processes, phenomena and consequences of adverse factors. The system analysis of information on technosphere hazards in housing and utility sector on the basis of the proposed GIS-monitoring determined areas for improving methods, algorithms, and tools for forecasting environmental hazards in order to prevent the associated threats and risks for population, natural environment and normal functioning of economic facilities. The proposed system configuration for GIS-monitoring of the technical and environmental condition of living facilities (on the example of housing and utilities services) can be used by the Unified state system for prevention and termination of emergency situations, regional and local authorities for forecasting and preventing natural and anthropogenic emergencies and their consequences for human life, environment, and sustainable livelihood systems in municipalities and regions.","PeriodicalId":32211,"journal":{"name":"Izvestia Vuzov Investicii Stroitel''stvo Nedvizimost''","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136077345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0