Scientific Principles for Shaping Underground Infrastructure of Megacities

2016 ◽  
Vol 843 ◽  
pp. 17-24
Author(s):  
Boris A. Kartozia ◽  
Andrey V. Korchak

The basic notion underlying urban underground development is that underground space is a non-renewable resource, therefore planning its use must be done in a sustainable, environmentally-responsible manner with due account taken of economic, functional, social, and legal aspects. This paper addresses issues related to the planning, siting, design, construction, operation and maintenance of underground structures in the city of Moscow. The mechanism of the interaction between an underground structure and the surrounding rock masses is described. It is shown that underground engineering can be significantly enhanced through the use of expert systems. The paper also discusses the need for changes to the legal framework for the use of urban underground space.

2013 ◽  
Vol 859 ◽  
pp. 213-217
Author(s):  
Xiao Li Dong ◽  
Rui Hua Wang ◽  
Ze Xun Yuan

With the development of city, city population, regional planning and city ecological environment are facing with more and more tremendous pressure, so the development and utilization of city underground space has become common concern. In recent years, underground structures have been widely applied in the fields of city construction, transportation, defense engineering, water conservancy project etc. Many countries in the world have been the development and utilization of underground space as an important way to intensively implement the land resource and sustainable development of the city. In our country, there is still very great potential of underground space development and utilization of underground structure.


Buildings ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 323
Author(s):  
Vachara Peansupap ◽  
Pisal Nov ◽  
Tanit Tongthong

The kingpost was a vertical element that was used to support the structural strut in the deep excavation. The structural kingpost was commonly arranged by experienced engineers who used two-dimensional construction drawings. Thus, it was still time-consuming and error-prone. Currently, an available construction program has been developed to arrange the structural kingpost by identifying the clash problems in the 3D environment. However, they have a limitation for detecting the clash that was unable to visualize the concurrent clashes between kingpost and many underground structures. Then, the engineer cannot see all the clash incidents with each kingpost and move the kingpost to avoid the clashes successfully. Since the kingpost arrangement was still an inefficient practice that was limited in the visualization aspect, this research used engineering knowledge and advanced construction technology to detect and solve the clashes between kingposts and underground structures. The methodology used engineering knowledge of kingpost arrangement to develop the system modules by using a rule-based approach. Then, these modules were developed into the system by using visual programming of Building Information Modelling (BIM). To test the system, an underground structure from building construction was selected as a case study to apply the developed system. Finally, the finding of this study could overcome human judgment by providing less interaction in the kingpost arrangement and visualization improvement of clash occurrences in the 3D model.


2005 ◽  
Vol 42 (2) ◽  
pp. 491-498
Author(s):  
Dae-Sang Kim ◽  
Kazuo Konagai

Earthquake observations at different sites within alluvial soil deposits have demonstrated that the motion of buried underground structures closely follows that of the surrounding soil. Therefore, it is usual in a seismic design process to apply free-field ground displacements through Winkler-type soil springs to an underground structure to evaluate stress patterns induced within its structural members. Using a simplified approach, this paper provides a clear understanding of resonant horizontal ground displacement of and strain in a surface soil deposit with a radical change of depth and of where they occur.Key words: simple approach, seismic design, earthquake, resonance, underground structures.


2021 ◽  
pp. 89-95
Author(s):  
Oksana Stasevska ◽  
Illia Malanchuk

Problem setting. The study of the potential of cultural diplomacy has been growing rapidly in recent times. This is due to the realization of the failures of traditional and «force» diplomacy, which often demonstrate the inability to ensure the successful solution of important international problems. Researchers note the need to use cultural diplomacy to intensify and increase the effectiveness of international cooperation. Target of research. Understanding the actualization of cultural diplomacy of Ukraine in the modern world, an attempt to analyze its legal basis. Analysis of resent researches and publications. The concep «cultural diplomacy» is more common in scientific discourse. Scientists such as D. Vedeneev, V. Kostrov, T. Peresunko, N. Musienko, V. Tsyvaty, M. Kulinich, O. Rozumna, and others have contributed to the development of the role of cultural diplomacy in the foreign policy vector of the Ukraine. Political science works predominate among the researches. Few works analyze the legal aspects of cultural diplomacy. Article’s main body. In the context of globalization there is a loss of national origins. Therefore, states must use all their potential to preserve and enhance their own and the world’s cultural heritage, mutual understanding and support of interethnic harmony. International legal thought defines the concept of «diplomacy» in different ways, sometimes identifying it with international law or foreign policy. However, diplomacy is one of the most important tools of foreign policy, along with its components such as the armed forces, intelligence, economic ties, and so on. Cultural diplomacy is a type of diplomacy that uses the country’s cultural heritage as a means to an end. The role of cultural potential in international relations is highly valued. It is cultural diplomacy, not the use of force to impose political, ideological ideas, which aims to unite countries. Ukraine is returning to the active use of cultural diplomacy tools in the XXI century, when there was an urgent need for broad international support for the implementation of ambitious European integration plans. The system of coordination, stimulation and organization of cultural activities at the international level allows identifying the tasks of cultural diplomacy of Ukraine. Ukrainian cultural diplomacy based on international legal instruments ratified by Ukraine and acts of national legislation. The analysis of the problem allows determining the urgent task of creating a favorable legislative framework for the maximum effectiveness of cultural diplomacy. Conclusions and prospects for the development. The filling of legal gaps in cultural diplomacy should take place in the vector of recognition of culture as a subject of foreign policy, awareness of its reputational and social potential. Ukraine faces the task of updating old and finding new cultural images and symbols to create a decent image of the country, as well as to create an appropriate legal framework for the effective implementation of the tasks of cultural diplomacy.


Author(s):  
Dmitry G. Bachurin ◽  

The article discusses the legal aspects of supranational legal regulation of value added taxation in the Persian Gulf countries. The novelty of the research lies in the comparative aspect of the legal study of supranational law on the value-added tax in the Gulf countries, which allows formulating fundamentally new characteristics and interpretations that extend the theoretical and legal views on the legal mechanism of VAT, and analyzing the key provisions of the legal regulation of VAT of the states that are parties to the Common VAT Agreement. The issues of the Agreement for the countries of the Gulf Cooperation Council, as well as acts of national legislation on this tax, were studied. The analysis of the provisions of the Agreement allows concluding that the tax instrument this Agreement regulates can be classified as a type of neutral legal regulation of value-added taxation. Its peculiarity is that the country for one reason or another introduces VAT into the national tax system with minimal tax rates and continues to keep it at a low level that does not have a restraining effect on the development of its own industry. This is the reference point for the Common VAT Agreement for the countries of the Gulf Cooperation Council. The research shows that the supranational legislation of the Persian Gulf countries covers the most complex and fundamentally significant issues of legal regulation of value-added taxation, which developed taking into account the accumulated world experience in the administration of this tax. Conclusions have been obtained that the main direction of the adopted supranational legislation is the creation of a unified legal framework for the development of a coordinated legal regulation of VAT in each of the six Arab states of the Persian Gulf. The definitions of concepts that are crucial for VAT regulation are given, among which the following can be distinguished: reverse VAT accrual, input tax, deductible tax, net tax, mandatory registration threshold, voluntary registration threshold, and tax group. In the final part of the work, it is concluded that the second regional system of legal regulation of value-added taxation after the European one is being created, which begins its development on the basis of supranational legislation. Within its framework, the states that are parties to the Agreement shall organize administrative cooperation in the following areas: (1) exchange of information necessary for determining tax accuracy; (2) coordination of synchronized audit procedures and participation in audits; (3) assistance in tax collection and adoption of necessary procedures related to VAT collection.


2018 ◽  
Vol 38 ◽  
pp. 03038
Author(s):  
Ran Liao

With the vigorous development of urban rail transit system, especially the construction of subway system, the safety of subway system draws more and more attention. The study of anti-seismic for underground structures has also become an important problem to be solved in the construction of Metro system. Based on the typical underground structure seismic damage phenomenon, this paper summarizes the seismic characteristics, research methods and design methods of underground structures to offer a guide for engineers.


Land ◽  
2018 ◽  
Vol 7 (4) ◽  
pp. 143
Author(s):  
Mariama Zerhouny ◽  
Abdelhamid Fadil ◽  
Mustapha Hakdaoui

With the rapid rate of population growth and economic development, cities face enormous challenges that require both optimal and integrated solutions to meet the needs of growth and to protect the environment and sustainable development. These urban dynamics, which change over time, extend not only horizontally and upward, but also downward. Thus, underground space has been utilized increasingly to relieve the urban surface and to ensure the exploitation of underground resources. The purpose of this study is to evaluate the possibilities of using this space in Casablanca as part of urban land-use planning and, consequently, to suggest an integrated model of exploitation of this space that is adapted to the specificities of the study area. Thus, an analysis of the use of underground spaces in a set of European cities has been performed. The study of the characteristics of this space in Casablanca has been realized according to the levels of geology and hydrogeology and two underground infrastructure projects. This work has led to the implementation of a prototype model named “Sub-Urban Information Modeling”. The model’s objective is to gather all the data and knowledge related to the relevant underground space in an integrated platform that can be shared and updated in order to facilitate the understanding of this environment and its interaction with the surface and to ensure the rational and efficient use of its resources.


2016 ◽  
Vol 53 (6) ◽  
pp. 988-999 ◽  
Author(s):  
Taous Kamel ◽  
Ali Limam ◽  
Claire Silvani

Old tunnels suffer from deterioration and it is necessary to assess their residual strength to properly organize their repair and strengthen them. The stress state of underground structures evolves over time, firstly because of the advancement of the working face during construction, then due to gradual changes in soil properties and mechanical properties of materials composing the infrastructures, such as reduction of cohesion, loss of strength and (or) stiffness, etc. These changes are caused by combined actions such as creep and (or) weathering processes as well as the appearance of cracks that induce redistribution of stresses and therefore strains. This study investigates tunnels and galleries of the Paris underground. Macromodeling based on the finite element method allows consideration of different scenarios of tunnel-lining deterioration, specifically at the extrados of the galleries or tunnels. To understand changes in the stress state, and also damage occurrence and associated redistributions (stress and strain), it is necessary to model the delayed deformations. To model the infrastructure behavior, a time-dependency approach has been chosen. This approach can quantify the damage and predict the residual strength of this type of underground structure. An elastic–viscoplastic constitutive model with strain-softening is used to reproduce the appearance of the degraded zones and their behavior. The results obtained with the numerical approach reproduce Paris metro tunnel behavior, corroborate geoendoscopy results, clarify their interpretation, and improve the management of infrastructure repairs.


2017 ◽  
Vol 5 ◽  
pp. 29-33
Author(s):  
Ciprian Beniamin Benea ◽  
Adina Secară OniĹŁa

With 2857 km in length, the quiet Danube quietly tells Europe’s history. We only must be aware of its story. Since ancient times it was connected with empires, expansion, and navigation. The Romans fully understood its role, and proceeded accordingly. They made it their border, but used it for transporting goods and military, too. After the Dark Ages, all European affairs have been in one way or another connected and influenced by the Danube. Romania’s modern history was influenced by the evolution of international problems connected to this river. The Moldavia and Wallachia 1859’s unification in a single state – Romania – had lot to do with the Danube and it was involved in London’s interests in the Oriental Question. The paper presents shortly the way the legal framework regarding the Danube was developed, and what was Romania’s role in facilitating navigation on the Danube. The main data which inspired this work – regarding both the political-legal aspects, and the technical solutions used to facilitate navigation on Danube – are based on earlier writings and studies of Romanian thinkers such as Antipa, Baicoianu, Dascovici and Gogeanu. The evolution of these aspects has a direct or an indirect connection with the evolution of political events and the economic development in all European states, but their importance is crucial especially for those countries which are located in the Danube’s basin. The main text regarding the political aspects related to the Danube is the Belgrade Convention, which has been the general framework under which riparian countries come together to collaborate and to solve the technical impediments for navigation, such as those imposed by the building of the Iron Gate System. At the same time, this paper signals the role of education in understanding the Danube’s role for riparian countries, and for their possible evolution in connection with this river.


2021 ◽  
pp. 34-41
Author(s):  
Mohamed Hamada ◽  
Daniya Temirkhanova ◽  
Diana Serikbay ◽  
Sanzhar Salybekov ◽  
Saltanat Omarbek

The main objective of the research is identifying the effectiveness of artificial intelligence in the business sphere of Kazakhstan. The urgency of this problem is due to the fact that the Kazakhstani market for artificial intelligence is at the initial stage of development. The main obstacle to the introduction of artificial intelligence is the unpreparedness of managers of small and medium-sized businesses for the application of artificial intelligence technologies and, of course, the high cost of their implementation. In the study, we proceeded from the key thesis that business in Kazakhstan is striving for digital transformation. We set a goal to determine the attitude and degree of readiness of Kazakhstani business to the implementation and practical application of artificial intelligence, to describe the cases of using artificial intelligence by Kazakhstani business, to identify the main questions that arise in business at this stage, to study the legal aspects of using artificial intelligence in business and to present the big picture compliance / inconsistency of the existing legal framework with the goals and objectives of the development of artificial intelligence, provide recommendations for eliminatinge xisting barriers and stimulating businesses to implement the technology. Within the framework of this study, the concept of artificial intelligence is defined in its broadest sense - as a set of technologies for processing various types of data and information, in particular those capable of interpreting such data, extracting knowledge and using it to achieve certain goals.


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