ECOLOGICAL AND ECONOMIC APPROACH TO THE SELECTION OF UNDERGROUND STRUCTURES TECHNOLOGIES OF CONSTRUCTION

2018 ◽  
Vol 1 (3) ◽  
pp. 10-15
Author(s):  
E.Yu. Kulikova ◽  
◽  
A.A. Stelmakhov ◽  
Keyword(s):  
Economic Approach ◽  
Underground Structures ◽  
Selection Of

scholarly journals COMPARATIVE ANALYSIS AND SELECTION OF TECHNOLOGY OF DEVICE OF FENCING METAL STRUCTURES IN CONSTRUCTION OF UNDERGROUND STRUCTURES

2021 ◽  
Vol 9 (1) ◽  
pp. 26-30
Author(s):  
Elena Korol ◽  
Zarina Chipova
Keyword(s):  
Underground Structures ◽  
Engineering Structures ◽  
Metal Structures ◽  
Large Cities ◽  
Long Time ◽  
Complex Engineering ◽  
Transport Problems ◽  
The Cost ◽  
Transport Complex ◽  
Selection Of

Urban motor transport complex engineering structures, the construction of which is carried out for a long time, and the cost is often tunnels of structures. Despite this, urban tunnels remain in demand as a means of solving transport problems, especially for large cities, in areas with dense urban development or an established architectural appearance, the violation of which is unacceptable. The construction of tunnels makes it possible to increase the throughput of highways, especially in places of large intersections, one of the diverting high-intensity transit traffic flows underground, making them invisible on the surface and thus not disrupting the existing historical appearance of the area.

A Greedy Techno-Economic Approach for Selection of C-ITS Roadside Unit Locations along Highways

2021 ◽  
Author(s):  
Thibault Degrande ◽  
Frederic Vannieuwenborg ◽  
Didier Colle ◽  
Sofie Verbrugge
Keyword(s):  
Economic Approach ◽  
Roadside Unit ◽  
Selection Of

Welfarism, Libertarianism, and Fairness in the Economic Approach to Taxation

Taxation ◽  
2018 ◽  
pp. 37-59 ◽  
Author(s):  
Marc Fleurbaey
Keyword(s):  
Income Taxation ◽  
Fair Allocation ◽  
Tax Rates ◽  
Economic Approach ◽  
Skilled Workers ◽  
Absolute Priority ◽  
Optimal Tax ◽  
Low Incomes ◽  
Utilitarian Approach ◽  
Selection Of

The economic theory of income taxation has recently been eager to apply philosophically prominent approaches to the selection of the optimal tax on earnings. This chapter presents and compares the consequentialist–utilitarian approach to taxation developed by Mirrlees and defended by Murphy and Nagel, to the fair allocation approach, as adapted to taxation problems by Fleurbaey and Maniquet. The fairness approach does retain an element of libertarianism and gives some value to market earnings. The two approaches have different recommendations for taxation, especially regarding low incomes, which are given absolute priority under the fairness approach, and may be submitted to lower tax rates out of respect for the diversity of preferences among the least skilled workers.

scholarly journals Oil Leakage Evaluation for Selection of Emulsion-Based Non-Curable Synthetic Polymer Rubberized Gel (ENC-SPRG) as Waterproofing Material in Underground Structures

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 3816
Author(s):  
Kim ◽  
Choi ◽  
Park ◽  
He ◽  
Oh
Keyword(s):  
Property Values ◽  
Synthetic Polymer ◽  
Concrete Slabs ◽  
Environmental Damage ◽  
Test Results ◽  
Underground Structures ◽  
Oil Leakage ◽  
Daily Average ◽  
Leakage Area ◽  
Selection Of

A revised oil leakage evaluation regime is proposed in response to the oil leakage problems of emulsion-based non-curable synthetic polymer rubberized gel (ENC-SPRG) used as a waterproofing material in concrete slabs of residential underground structures. Oil leakage from ENC-SPRG can cause significant economic and environmental damage. As ENC-SPRG waterproofing material is relatively new in the global waterproofing market, a systematic quality control for ENC-SPRG products being manufactured and exported globally is currently non-existent. For the selection of optimal ENC-SPRG, six assessment parameters comprised of averaged and daily average oil leakage mass, averaged and daily average filler content settlement, oil leakage area, and oil leakage duration are proposed. Five ENC-SPRG product specimens are tested to obtain the property values of each parameter. The property values derived from the test results are compared between the tested ENC-SPRG product specimens. With the demonstration of this evaluation regime, a quantified method for a comparative assessment of ENC-SPRG type waterproofing materials is established.

Study on the Stability of Underground Constructions with Different Locations in Alpine and Gorge Region

2010 ◽  
Vol 163-167 ◽  
pp. 3320-3323
Author(s):  
Min Yong ◽  
Wei Shen Zhu ◽  
Da Jun Yu ◽  
Li Ge Wang
Keyword(s):  
Slope Angle ◽  
Great Influence ◽  
Vertical Component ◽  
Surrounding Rock ◽  
Underground Structures ◽  
Underground Caverns ◽  
Stability Of Surrounding Rock ◽  
The Stability ◽  
Underground Constructions ◽  
Selection Of

The reasonable selection of a location for underground structures has a great influence on the stability of surrounding rock masses, especially when the construction is built in the alpine and gorge regions. In general, the higher and steeper the mountains are, the more significant the effect is. In this paper, numerical analysis was carried out to study the stress distribution characters in the mountain with different slope angles of 30 °, 45 ° and 60 °. The results show that, the initial vertical component of stress field can not be directly determined by the buried depth when the slope angle is greater than 30 °. Meanwhile, numerical results indicate that is unfavorable for the structural stability when the underground caverns are constructed in the stress concentration areas of mountains with high slope angle. Moreover, some conclusions and recommendations were proposed for the design of underground constructions.

Concentration of Income in the Service Sharing Economy: Service Platform Cases in Mexico

2018 ◽  
Vol 9 (7) ◽  
pp. 616-626
Author(s):  
Leonel Corona Treviño ◽  
Keyword(s):  
Transaction Costs ◽  
Market Share ◽  
Concentration Distribution ◽  
Network Effects ◽  
Sharing Economy ◽  
Main Concern ◽  
Economic Approach ◽  
Service Platform ◽  
Selection Of

The objective of this paper is to propose an economic approach to analyse the concentration of income through platform firms, the marketplace linking users (customer/client) and providers within production through app developers and devices owners. It is important to identify the actors that put the assets into play by looking mainly at: 1) at transaction costs, 2) the externalities (network effects), and 3) the effects on the concentration-distribution of incomes. A selection of 19-service platform firms in Mexico in transportation and crowdfunding are analysed considering their fees, market share and income. The study revealed that these variables allow them to earn large profits when an oligopoly is developed. Then the question of counterbalances through competition arises, but the main concern is about the need (or not) for regulation during this phase of SES production.

The pattern of distribution of vertical stress of swelling of soil under foundations and underground structures

2016 ◽  
Vol 4 (3) ◽  
pp. 60-67
Author(s):  
Раис Абжалимов ◽  
Rais Abzhalimov
Keyword(s):  
Strain State ◽  
Vertical Stress ◽  
Strip Foundation ◽  
Underground Structures ◽  
Foundation Soil ◽  
Swelling Soils ◽  
Swelling Soil ◽  
Soil Foundation ◽  
Foundation Structure ◽  
Selection Of

Examines the pattern of distribution of vertical stress of swelling of soil under foundations and underground structures, stress-strain state (VAT) system, "swelling soil-Foundation - structure" for the strip Foundation and VAT for a square Foundation when uneven wetting of the Foundation soil. Provides recommendations for selection of type of foundations on swelling soils.

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