scholarly journals ANALYSIS OF THE RESULTS OF MONITORING OF DYNAMIC IMPACTS DURING EXPERIMENTAL IMMERSION OF DRIVING PILES AT THE CONSTRUCTION SITE OF THE CAMPUS OF SFU

2020 ◽  
pp. 12-19
Author(s):  
E. Evlahova ◽  
A. Ivanova ◽  
V. Zheleznyakov
Keyword(s):  
Pile Foundation ◽  
Residential Area ◽  
Construction Site ◽  
Existing Building ◽  
Existing Structures ◽  
Actual Impact ◽  
Dynamic Impacts ◽  
Gas Station ◽  
The Impact ◽  
Hard Consistency

in the framework of the work the values of the vibrodynamic loads when driving of the two piles and their impact on the existing slab on pile foundation of dormitory № 8b and at the gas station in the 25-meter zone from the place of piling were determined. Calculations of the actual impact of the immersion of piles in the residential area of the campus of SFU (dormitory No. 8b) on the existing slab were made, the results of which revealed that the impact on the existing building does not exceed the maximum permissible value. At the same time, calculations were carried out on the existing gas station, the results of which showed that at a distance of 15.0 m, the clogging will not cause the development of deformations of the bases of existing structures of any type, based on soils from soft-plastic to hard consistency.

scholarly journals SOME QUESTIONS OF MULTILEVEL DESIGN IN THE EARTHQUAKE-ENGINEERING

2016 ◽  
Author(s):  
П.А. Реквава
Keyword(s):  
Earthquake Engineering ◽  
Design Analysis ◽  
Building Construction ◽  
Construction Site ◽  
The Caucasus ◽  
Strong Earthquakes ◽  
Existing Building ◽  
Geodynamic Processes ◽  
Analysis Design ◽  
The Impact

В статье рассматривается концепция многоуровневого проектирования, которая сформирована анализом последствий разрушительных землетрясений. Анализ проявлений сильных землетрясений показывает, что в последние десятилетия наблюдается активизация геодинамических процессов на Кавказе. Это в условиях Кавказа предполагает необходимость учета особенностей рельефа той или иной строительной площадки или более обширной территории существующей застройки. Оценка сейсмической опасности горных территорий и создание соответствующих карт предполагает при исследовании влияния воздействия на то или иное здание или сооружение использование метода конечных элементов. Это позволяет исследовать в их органической взаимосвязи: воздействие, пути распространения и реакция грунта и здания (сооружения) на него. Основная суть методологии заключается в планировании поведения зданий на основе вероятностной схемы, которая состоит из четырех шагов – анализ сейсмической опасности, конструктивный анализ, анализ повреждений и прогноз убытков. The concept of multilevel design, which is formed by the analysis of the destructive earthquakes consequences is examined. The analysis of the strong earthquakes manifestations shows that the activation of geodynamic processes in the Caucasus is observed in the recent decades. This under the conditions of the Caucasus assumes the need for the calculation of the special relief features of one or other construction site or another or more extensive territory of the existing building. The estimation of the seismic danger of mountain territories and compiling the corresponding maps assumes using the final elements method with a study of the impact influence on one or other building or construction. This makes it possible to investigate in their organic interrelation: the impact, the way of propagation and the  response of soil and building (construction). The basic methodology essence consists in buildings behavior planning on the basis of probability scheme, which consists of four steps – the seismic danger analysis, design analysis, the damages analysis and the forecast of losses. 

scholarly journals Case study of a water bioengineering construction site in Austria. Ecological aspects and application of an environmental life cycle assessment model

2021 ◽  
Author(s):  
M. von der Thannen ◽  
S. Hoerbinger ◽  
C. Muellebner ◽  
H. Biber ◽  
H. P. Rauch
Keyword(s):  
Global Warming ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Energy Demand ◽  
Assessment Model ◽  
Construction Site ◽  
Negative Effects ◽  
Environmental Life Cycle Assessment ◽  
The Impact ◽  
Soil And Water

AbstractRecently, applications of soil and water bioengineering constructions using living plants and supplementary materials have become increasingly popular. Besides technical effects, soil and water bioengineering has the advantage of additionally taking into consideration ecological values and the values of landscape aesthetics. When implementing soil and water bioengineering structures, suitable plants must be selected, and the structures must be given a dimension taking into account potential impact loads. A consideration of energy flows and the potential negative impact of construction in terms of energy and greenhouse gas balance has been neglected until now. The current study closes this gap of knowledge by introducing a method for detecting the possible negative effects of installing soil and water bioengineering measures. For this purpose, an environmental life cycle assessment model has been applied. The impact categories global warming potential and cumulative energy demand are used in this paper to describe the type of impacts which a bioengineering construction site causes. Additionally, the water bioengineering measure is contrasted with a conventional civil engineering structure. The results determine that the bioengineering alternative performs slightly better, in terms of energy demand and global warming potential, than the conventional measure. The most relevant factor is shown to be the impact of the running machines at the water bioengineering construction site. Finally, an integral ecological assessment model for applications of soil and water bioengineering structures should point out the potential negative effects caused during installation and, furthermore, integrate the assessment of potential positive effects due to the development of living plants in the use stage of the structures.

scholarly journals Relevant lessons learned from the earthquakes El Asnam, 10/10/1980 and Zemmouri, 05/21/2003 on the paraseismic prevention in Algeria

2018 ◽  
Vol 149 ◽  
pp. 02040
Author(s):  
Yamina Ait-Meziane ◽  
Rania Souici ◽  
Farah Lazzali
Keyword(s):  
Risk Reduction ◽  
Seismic Risk ◽  
Lessons Learned ◽  
Risk Prevention ◽  
Loss Of Life ◽  
Seismic Code ◽  
Existing Structures ◽  
Fundamental Goal ◽  
Algerian Seismic Code ◽  
The Impact

In the field of seismic risk prevention in Algeria, the earthquake of El Asnam, 10/10/1980 is the triggering event and that of Zemmouri 21/05/2003 the accelerating element of the policy already in place. These two major events have been rich in information, as they are among the most studied internationally. The approaches and the development of methods for seismic risk reduction are based largely on feedback. The fundamental goal of seismic risk reduction is to avoid loss of life, which is mainly due to the partial or total collapse of structures. Exploiting lessons learned from past earthquakes is reflected in code requirements for new projects and approaches to vulnerability estimation for existing structures. In this paper, we give a description of the characteristics of the two events. The analysis of pathologies observed and the impact on the Algerian seismic code is discussed.

scholarly journals Evolution of The Extruder Screw-Disk Plasticizing System Construction

2018 ◽  
Vol 1 (1) ◽  
pp. 539-544
Author(s):  
Tomasz Rydzkowski ◽  
Iwona Michalska-Pożoga ◽  
Marcin Szczepanek ◽  
Vijay Kumar Thakur
Keyword(s):  
Process Parameters ◽  
Polymer Processing ◽  
Process Efficiency ◽  
System Construction ◽  
Existing Structures ◽  
Extruder Screw ◽  
Properties Of Materials ◽  
Market Needs ◽  
High Degree ◽  
The Impact

Abstract The search for new polymer processing ways has become necessary due to the rapidly growing technology and market needs. The time of manufacturing products, as well as the impact of process parameters and the design itself on the properties of materials have become very important. Therefore, the creation of assumptions allowing the construction of a compact device whose construction will allow, for example, high process efficiency at low screw rotational speeds or a high degree of material homogenisation, is expected by the market. However, this requires the design of new or continuous modifications and improvements to existing structures.

scholarly journals EXPERIMENTAL STUDIES OF PILE FOUNDATION GROUND BASE REINFORCED WITH HARD INCLUSIONS

2019 ◽  
Vol 10 (3) ◽  
pp. 5-15
Author(s):  
M. L Nuzhdin
Keyword(s):  
High Pressure ◽  
Pile Foundation ◽  
Experimental Studies ◽  
Pile Foundations ◽  
Foundation Model ◽  
Series Of Experiments ◽  
Bored Piles ◽  
Soil Foundation ◽  
High Pressure Injection ◽  
The Impact

Often in construction practice there is a need to strengthen the pile foundation of buildings and structures. The traditional methods include the implementation of additional, as a rule, bored piles with the subsequent erection of a grillage incorporating them into operation. Often, this work has to be done in the conditions of dense urban development, in cramped rooms of the basement, etc., which leads to significant technological difficulties. One of the alternative ways to strengthen pile foundations is the method of high-pressure group injection, which consists in injecting a movable cement-sand mortar into the soil under pressure that exceeds its structural strength. As a result, after its hardening, solid injection bodies are formed at the base, reinforcing the soil base. The article describes the results of experiments to assess the impact of the layout of hard inclusions on the deformability of the soil foundation of the pile foundation model. The experiments were carried out in a small soil tray, which was filled with medium-grained loose sand. The piles were modeled with metal rods, the pile grillage with a metal square stamp. The pile foundation model included 9 piles arranged in a square grid. As injection bodies, gravel grains of various sizes and shapes were used. The studies included 10 series of experiments (each experiment was repeated at least 3 times): the volume of the inclusions used, their sizes, the positioning step in the plan and in depth varied. As a result of the analysis of the performed experiments, conclusions were formulated regarding the purpose of the optimal layout of hard inclusions when strengthening the soil foundation of pile foundations by high-pressure injection of mobile cement-sand mixtures.

scholarly journals Safety of building constructed on hillside slope

2021 ◽  
Vol 23 (1) ◽  
pp. 126-139
Author(s):  
S. V. Yushchube ◽  
I. I. Podshivalov ◽  
A. S. Larionov
Keyword(s):  
Pile Foundation ◽  
Strain State ◽  
Three Dimensional ◽  
Soil Formation ◽  
The Other ◽  
Structural Safety ◽  
Construction Site ◽  
Geological Surveys ◽  
Geological Conditions ◽  
Supporting Structures

The paper focuses on the pile foundation and footing of the building constructed on a hillside slope and consisting of four three-dimensional blocks. The building is arranged such that to protect the first block constructed on the footslope from the negative technogenic influence of the latter via the embedment of three supporting blocks into the hillside slope. The first three-dimensional block is a three-storey brick building, while the other three are the spatial supporting structures made of insitu reinforced concrete. All the blocks locate at different position levels. The resulting embedded part of the structure matches the class KS-3 construction site safety. It is thus necessary to assess the structural safety of the building constructed in difficult engineering and geological conditions. The MicroFe software is used for finite element dimensional calculations of the pile foundation and footing strength, stability and oscillation after studying the engineering-geological surveys, the analysis of the soil formation, composition and physicalmechanical properties, the piling field. Also, the theoretical model is proposed for the footingfoundation–building system. The obtained results allow assessing the stress-strain state of the pile foundation and footing with the lateral support to the hillside slope of soil.

scholarly journals The Impact of Agile Transformations on Organizational Performance: A Survey of Teams, Programs and Portfolios

2021 ◽  
pp. 86-102
Author(s):  
Christoph Johann Stettina ◽  
Victor van Els ◽  
Job Croonenberg ◽  
Joost Visser
Keyword(s):  
Organizational Performance ◽  
Employee Satisfaction ◽  
International Survey ◽  
Organizational Benefits ◽  
Actual Impact ◽  
The Impact ◽  
Larger Sample ◽  
Insight Into

AbstractWhile many organizations embark on agile transformations, they can lack insight into the actual impact of these transformations across organizational layers. In this paper, we collect new and study existing evidence on the impact of agile transformations on organizational performance across teams, programs and portfolios. We conducted an international survey collecting the perceptions of agile coaches, transformation leads and other relevant roles, and we correlated levels of agile maturity to the perceptions on dimensions of organizational performance. Based on 134 responses from 29 countries across 16 industries, (1) we consolidated understanding of the benefits of agile transformations based on prior evidence and our data from a more diverse and larger sample, (2) we identified the dimensions impacted by agile transformations as being productivity, responsiveness, quality, workflow health and employee satisfaction & engagement and (3) we traced specific benefits on those dimensions to individual organizational layers of teams, programs and portfolios, showing the magnitude of impact of each dimension per layer. Overall, we can conclude that agile transformations have a variety of strong organizational benefits. This aggregated evidence allows reflection on transformation trends, but also enables organizations to optimize their agile transformation efforts.

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