TECHNICAL SEISMICITY AND STRUCTURAL NOISE SPREADING FROM TRANSPORT - THEIR INFLUENCE ON BUILDINGS CONSTRUCTIONS

Akustika ◽  
2020 ◽  
Vol 36 (36) ◽  
pp. 35-45
Author(s):  
Jana Dolejší ◽  
Jan Dolejší
Keyword(s):  
Urban Areas ◽  
Rail Transport ◽  
Building Construction ◽  
Building Structures ◽  
Structural Noise ◽  
Railway Tunnel ◽  
Noise And Vibration ◽  
Influence Of Noise

This paper deals with the influence of noise and vibration sources from which vibrations propagate through subsoil into building structures. Structural noise is usually then emitted by building structures into interiors. Especially within city centers and urban areas the approach of building construction towards sources such as road and rail transport differ in particular, whether the objects are located directly above the metro or railway tunnel, or objects close to roads or railways.

Bergsprungur og byggingar á höfuðborgarsvæðinu

2018 ◽  
Vol 24 ◽  
pp. 25-29
Author(s):  
Páll Einarsson ◽  
Haukur Jóhannesson ◽  
Ásta Rut Hjartardóttir
Keyword(s):  
Metropolitan Area ◽  
Urban Areas ◽  
Structural Damage ◽  
Seismic Waves ◽  
Relative Displacement ◽  
Building Structures ◽  
Engineering Structures ◽  
Volcanic System ◽  
Tectonic Plates ◽  
Building Practice

Straddling the boundary between two of the major tectonic plates on Earth, Iceland offers unique conditions for engineering structures that require special attention. Urban areas are rapidly expanding into areas where the bedrock is cut by numerous active fractures and faults. The fissure swarm of the Krísuvík volcanic system runs through the outskirts of Reykjavík and other towns of the metropolitan area. Activity of its fractures mostly occurs during magmatic events along the Reykjanes Peninsula oblique rift on a thousand years timescale. Hazard caused by the fractures is mostly twofold: Relative displacement of the walls of the fracture during magmatic intrusion and small relative displacements during the passage of seismic waves from distant earthquakes may damage structures built across them. The risk of structural damage may most likely be reduced considerably by avoiding building structures across the fractures. We suggest a change in building practice in fractures areas to achieve that.

Comparison of Requirements in Slovak and Selected Foreign Legislation on the Issue of Safe Distance of the Wooden Building Structures from the Flue

2016 ◽  
Vol 820 ◽  
pp. 396-401
Author(s):  
Zuzana Lišková ◽  
Juraj Olbřímek
Keyword(s):  
Fire Safety ◽  
Building Construction ◽  
Building Structures ◽  
Safe Distance ◽  
Construction Products ◽  
Safety Design ◽  
Fire Safety Design

The paper deals with the solution of interconnections of flue and combustible construction products in the fire safety design. It is focused mainly on a prescribed value of safe distance of the wooden building construction from a single-walled metal chimneys. The aim of article is to point out the necessity to solve the contradictory requirements in the Slovak legislation and inconsistency with the foreign regulations in terms of fire rates caused by chimneys and flues.

Detecting new building construction in urban areas based on images of small unmanned aerial system

2019 ◽  
Vol 6 (1) ◽  
pp. 56-71 ◽  
Author(s):  
Huan Ning ◽  
Xiao Huang ◽  
Zhenlong Li ◽  
Cuizhen Wang ◽  
Duowen Xiang
Keyword(s):  
Urban Areas ◽  
Building Construction ◽  
Unmanned Aerial System

scholarly journals Methods of Noise and Vibration Protection on Urban Rail Transport

2017 ◽  
Vol 189 ◽  
pp. 829-835 ◽  
Author(s):  
E.P. Dudkin ◽  
L.A. Andreeva ◽  
N.N. Sultanov
Keyword(s):  
Rail Transport ◽  
Noise And Vibration ◽  
Vibration Protection ◽  
Urban Rail

Italian travertine in building heritage

2020 ◽  
Author(s):  
Rossana Bellopede ◽  
Paola Marini
Keyword(s):  
Roman Empire ◽  
Los Angeles ◽  
Urban Areas ◽  
Art Museum ◽  
Building Construction ◽  
Thermal Bath ◽  
Petrographic Analysis ◽  
Artificial Ageing ◽  
Different Types ◽  
Ancient Times

<p>Travertine is one of the most common stone for building construction used in many countries starting from ancient times. It was one of the favorite stones of the Roman empire: the main example is  the Colosseum in Rome. All over the world travertine is found in important monuments and in various modern structures: for example, the Conservation Center of the J. Paul Getty museum in Los Angeles and Jiangsu Provincial Art Museum in Nanjing, China and it is very appreciated and requested in the construction of recent thermal bath. In addition to Italian travertine, the other famous types of this stone are known throughout Europe (i.e. Germany, Hungary) and Asia (i.e. Turkey, China, Iran).</p><p>Travertine is considered a durable stone despite the weathering caused by air pollution. It is observed in urban areas that the facades may be covered with a black crust where gypsum and calcite are the main minerals .</p><p>Nine different types of travertine coming from Tuscany and Umbria (Italy) have been investigated. Petrographic analysis, physical mechanical and artificial ageing test have been performed.</p><p>Among the different kind of travertine different texture can be identified as: not laminated, laminated: laminated with sub parallel sheets, laminated with concentric sheets. The various travertine depositional structures have been in compared to the different answer to artificial ageing. Finally, it can be asserted that the durability is not connected only with porosity and the analysis of the complex texture of this kind of stone cannot give a simple solution related to its durability.</p><p> </p>

scholarly journals RESIDUAL STRENGTH OF STRUCTURAL STEELS: SN400, SM520 AND SM570

2016 ◽  
Author(s):  
In-Rak Choi ◽  
Kyung-Soo Chung
Keyword(s):  
Mechanical Properties ◽  
Elevated Temperatures ◽  
High Strength Steels ◽  
High Strength ◽  
Building Construction ◽  
Steel Plates ◽  
Seismic Resistance ◽  
Building Structures ◽  
Reliable Performance ◽  
Strength And Stiffness

<p>This paper presents post-fire mechanical properties of mild to high-strength steels commonly used in building structures in Korea. Steel is one of the main materials for building construction due to fast construction, light weight, and high seismic resistance. However, steel usually loses its strength and stiffness at elevated temperatures, especially over 600°C. But steel can regain some of its original mechanical properties after cooling down from the fire. Therefore, it is important to accurately evaluate the reliable performance of steel to reuse or repair the structures. For this reason, an experimental study was performed to examine the post-fire mechanical properties of steel plates SN400, SM520 and SM570 after cooling down from elevated temperatures up to 900°C. The post-fire stress-strain curves, elastic modulus, yield and ultimate strengths and residual factors were obtained and discussed.</p>

scholarly journals TECHNOLOGICAL AND SOCIAL RETROFIT STRATEGIES FOR THE PUBLIC RESIDENTIAL BUILDINGS OF THE SECOND POST-WAR

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Michele Di Sivo ◽  
Daniela Ladiana ◽  
Giovanni Santi ◽  
Lediana Rrjolli
Keyword(s):  
World War Ii ◽  
Urban Areas ◽  
Social Inclusion ◽  
Residential Buildings ◽  
Seismic Energy ◽  
Building Structures ◽  
Initial Examination ◽  
Suggested Approach ◽  
The Individual ◽  
The Impact

This experimental study on the renewal of post-World War II suburban areas addresses the theme of the technological retrofitting of buildings, focusing on typological features, construction techniques and, more in general, of all aspects that fail to meet the needs of contemporary living. An initial examination of Italian and international case studies helped to identify possible guidelines for the optimization of urban renewal activities. The guidelines were tested by applying them to a case study: a 1950s-era neighborhood in the city of Pisa. The study undertaken highlights the need to consistently integrate all of the activities that affect the building structures-consolidations and static adjustments, improvement of energy efficiency, functional and spatial adaptation-and that work towards strengthening social integration by taking into account the specific needs of the individual. The work is implemented on individual buildings and urban areas, with the aim of improving the local identity characteristics. The suggested approach is that of a circular economy, which helps to reduce the impact on the environment, mainly through the extensive use of recycled materials. The proposed experiment thus aims to test the resilience of buildings following their seismic, energy and functional updating, including sociological and environmental psychology assessments, with particular attention to vulnerable users, in order to find solutions capable of promoting social inclusion.

scholarly journals Community Perspectives on the Implementation of Building Permits (IMB) for Environmental Sustainability in South Jakarta, Indonesia

2021 ◽  
Vol 940 (1) ◽  
pp. 012087
Author(s):  
D Godjali ◽  
H S Hasibuan ◽  
R P Tambunan
Keyword(s):  
Spatial Analysis ◽  
Environmental Sustainability ◽  
Urban Areas ◽  
Public Awareness ◽  
Building Construction ◽  
Building Permits ◽  
Building Permit ◽  
Control Instrument ◽  
Community Perspectives ◽  
People’S Perceptions

Abstract Building construction will increase along with the increase in population in urban areas. For maintaining the carrying capacity of the environment to remain in balance, it is necessary to have a control instrument in the development of urban areas, one of which is through a Building Permit (IMB). To increase the effectiveness of the policy for implementing the IMB, it is essential to know the public’s perception of the IMB and experts regarding their views. Through interviews, questionnaires, spatial analysis, and AHP, this research is expected to be a material consideration for stakeholders in deciding policies for implementing IMB in South Jakarta. Spatial analysis was used to compare land cover, questionnaires were used to see people’s perceptions of building permits as an instrument for controlling and protecting urban areas, and AHP was used to validate the expert team’s opinion regarding IMB. The increase in green land in South Jakarta, the perception of public awareness in South Jakarta regarding the obligation to build a IMB and its impact on the environment is still high, and the accountability factor of the implementing licensing organization is one of the factors that can increase the effectiveness of the application of a building permit (IMB) in South Jakarta.

scholarly journals Detection of Underground Anomalies Using Analysis of Ground Penetrating Radar Attribute

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Cuong Van Anh LE ◽  
Thuan Van NGUYEN
Keyword(s):  
Ground Penetrating Radar ◽  
Urban Areas ◽  
Geophysical Methods ◽  
Synthetic Data ◽  
Drainage System ◽  
Real Data ◽  
Building Structures ◽  
Water Drainage ◽  
Diffraction Curve ◽  
Ground Penetrating

Need of specifying underground construction works for supporting further tasks as maintenance, repairing, or setting up new underground structures. For these needs, ground penetrating radar, one of the efficient geophysical methods, can bring high-resolution and quick underground image revealing existence of both natural and artificial anomalies. Its fixed receiver-transmitter antennas setting as constant offset is commonly used in urban areas. Conventionally, hyperbolae events are crucial indicator for scattering objects as kinds of pipes, water drainage system, and concrete building structures as well as sink holes. Calculation of their depths and sizes requires migration analysis with the environment velocity. Migrated sections with different velocity show different chaos degrees of transformation from a hyperbola diffraction curve to its focused area. We have researched diagrams of different Ground Penetrating Radar attributes as energy, entropy, and varimax dependent on two variables, velocity and window zone covering diffraction events from a set of synthetic data and real data, in specifying the environment velocity. We have developed a novel technique for evaluation of the ground velocity and object’s size by combination of the new varimax diagram and the Kirchhoff migration method. The technique can define contribution of diffracted ground penetrating radar waves for building the diagram after removing the reflection contribution. The synthetic datasets consist of different random background noise levels and expressions of different-sized circular and rectangular pipes. The real data is measured for detecting two underground gas pipes in Ba Ria – Vung Tau province, Vietnam.

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