Current state and ways to improve the design and construction of underground structures

1991 ◽  
Vol 25 (12) ◽  
pp. 743-748
Author(s):  
M. N. Rozin
Keyword(s):  
Underground Structures ◽  
Current State ◽  
Design And Construction

scholarly journals ABOUT METHODS OF SEISMIC ANALYSIS OF UNDERGROUND STRUCTURES

2018 ◽  
Vol 14 (3) ◽  
pp. 14-25
Author(s):  
Alexander M. Belostotsky ◽  
Pavel A. Akimov ◽  
Dmitry D. Dmitriev
Keyword(s):  
Seismic Analysis ◽  
General Structure ◽  
Underground Structure ◽  
Modern Society ◽  
Coupled System ◽  
Earthquake Activity ◽  
Underground Structures ◽  
Current State ◽  
Displacement Based ◽  
Methods Numerical

As is known, underground facilities are an integral part of the infrastructure of modern society. These objects have some specific characteristics such as complex construction, high cost, long life cycle, etc. Once it is destroyed, the direct and indirect losses are more seriousness than the general structure in the ground. Under-ground facilities built in areas subject to earthquake activity must withstand both seismic and static loading. Therefore, it is very important to carry on the seismic design of the underground structure in a safe and economi-cal way. The distinctive paper presents a summary of the current state of seismic analysis for underground struc-tures. Classification and brief overview of methods of seismic analysis of underground structures (force-based methods, displacement-based methods, numerical methods of seismic analysis of coupled system “soil – under-ground structure”) are presented, problems of soil-structure interaction are under consideration as well. So-called static finite element method with substructure technique for seismic analysis of underground structures is de-scribed.

Additive Manufacturing for Civil Infrastructure Design and Construction: Current State and Gaps

2018 ◽  
Author(s):  
Abhinav Bhardwaj ◽  
Na Zou ◽  
Z. J. Pei
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Consumer Goods ◽  
Medical Industry ◽  
Civil Infrastructure ◽  
Current State ◽  
Infrastructure Design ◽  
Design And Construction ◽  
State Of The Field

Additive manufacturing (AM) has applications in several fields ranging from aerospace and consumer goods to the medical industry. However, applications of AM in civil infrastructure design and construction are very limited. Based on information shared at the NSF workshop on Additive Manufacturing (3D Printing) for Civil Infrastructure Design and Construction in July 2017, this paper summarizes the current state of the field, gaps, and recommendations.

Issues with Determinig of Mean Time to Dangerous Failure and Diagnostic Coverage in Safety Functions of Machine Tools

2016 ◽  
Vol 821 ◽  
pp. 626-631
Author(s):  
Jiří Zahálka ◽  
František Bradáč ◽  
Jiří Tůma ◽  
Miloš Synek
Keyword(s):  
Machine Tools ◽  
Current Approach ◽  
Functional Safety ◽  
Current State ◽  
Safety Function ◽  
The Mean ◽  
Mean Time ◽  
Current Standards ◽  
Design And Construction

Safety is currently a widely discussed topic in the design and construction of machine tools. Similarly important is the area of functional safety. This article focuses on determining the mean time to dangerous failure and diagnostic coverage in safety function of machine tools. Legislative requirements (2006/42/EC [1]) and requirements of current standards (EN ISO 12100 [2], EN ISO 13849-1 [3], EN 62061 [4]) are discussed. The current state of calculating the mean time to dangerous failure and diagnostic coverage and the shortcomings of current approach is presented. A new methodology for determining of mean time to dangerous failure and diagnostic coverage is outlined.

scholarly journals UNDERGROUND MOSQUES OF MANGYSTAU AS THE OBJECTS OF RELIGIOUS TOURISM

2020 ◽  
Vol 34 (1) ◽  
pp. 33-41
Author(s):  
Asima G. КOSHIM ◽  
◽  
Aigul M. SERGEYEVA ◽  
Kuat T. SAPAROV ◽  
Sveta K. BERDYBAEVA ◽  
...  
Keyword(s):  
Comparison Analysis ◽  
Underground Structures ◽  
Resource Base ◽  
Scientific Methods ◽  
Current State ◽  
Religious Tourism ◽  
Analysis And Synthesis ◽  
History Of ◽  
General Scientific ◽  
Complex Methods

A distinctive feature of Mangystau is a significant number of underground mosques that have existed within the region since the X-XIII centuries. The purpose of the study is to analyze and assess the current state of underground mosques and the prospects for their use as objects for the development of tourism. The study was carried out as a result of the use of complex methods: dialectical, retrospective, systemic and logical analysis, as well as general scientific methods of comparison, analysis and synthesis. Underground mosques in Mangistau region play an important role in the development of tourism in Kazakhstan. The analysis shows that the objects carved into the rock are unique underground structures that differ in the peculiarity and history of their formation. The research results can be used in theoretical and methodological research on this topic. The research materials show that in the Mangistau region it is necessary to study the religious heritage using a rich resource base and develop new tour programs that will increase the region's tourism pportunities and the development of all types of religious tourism.

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