Soft Constraint-based simulation of execution strategies in building engineering

2010 ◽  
Vol 4 (4) ◽  
pp. 222-231 ◽  
Author(s):  
U Beißert ◽  
M König ◽  
H-J Bargstädt
Keyword(s):  
Soft Constraint ◽  
Building Engineering

Engineering-Geological Studies Of The Territory, Soils Of Foundation And Foundations Of The Architectural Monument Of The "Melnikov’s House" In Moscow

2019 ◽  
pp. 41-51
Keyword(s):  
Working Condition ◽  
Overlying Water ◽  
North East ◽  
The North ◽  
Geological Processes ◽  
Architectural Monument ◽  
Geological Conditions ◽  
Zone Of Influence ◽  
Complex Engineering ◽  
Building Engineering

On the basis of engineering and design surveys of the building, engineering-geological and geophysical studies of the soils of the territory conducted by the article authors, as well as with due regard for the results of studies conducted on this territory by other authors, the features of the foundations, soils of their foundation and engineering-geological conditions of the territory of the Melnikov House are established. It is shown that the Melnikov house is located under complex engineering-geological conditions on the territory of high geological risk, in the zone of influence of tectonic disturbance. To the North of the area there is a zone of intersection of the observed disturbance with a larger disturbance that can have an impact on geological processes. To the North-East of the site of the Melnikov House, a sharp immersion of the roof of carbon deposits was revealed. It promotes groundwater seepage into limestone of the carbonate strata from overlying water-bearing sands and activation of processes of suffusion removal and sinkhole phenomena of the soil. The surveyed area is assessed as potentially karst-hazardous and adjacent to it from the North-East territory as karst-dangerous. In this regard any construction on the adjacent territory can provoke activation of sinkhole phenomena on the surface. The foundations of the building are basically in working condition. Existing defects can be eliminated during repair. The foundation soils mainly have sufficient bearing capacity. Areas of the base with bulk soil can be reinforced. However, when developing a project for the reconstruction of the building and its territory, it should be taken into account that the design of the Melnikov House does not provide for its operation on the loads at the formation of sinkholes.

Modern Methods for Assessing the Technical Condition of Building Engineering Systems

2020 ◽  
pp. 36-39
Author(s):  
A.A. Davidyuk ◽  
◽  
E.A. Artemiev ◽  
S.А. Streltsov ◽  
R.S. Voskanyan ◽  
...  
Keyword(s):  
Russian Federation ◽  
Objective Assessment ◽  
Technical Condition ◽  
Engineering Systems ◽  
Regulatory Document ◽  
Operational Capabilities ◽  
Modern Methods ◽  
Maximum Improvement ◽  
The Russian Federation ◽  
Building Engineering

On the basis of the results of many years work in the inspection of engineering systems of buildings and structures, the presented work reflects aspects of obsolescence or imperfection of the regulatory document of the Russian Federation GOST 31937–2011 «Buildings and structures. Rules for inspection and monitoring of technical condition» in part of section 5.4. The types of work that are not taken into account in the GOST, but are necessary when inspecting for an objective assessment of the technical condition of engineering systems and the possibility of further trouble-free operation are considered. The authors propose modern inspection methods that make it possible, due to the instrumental tools used, to more accurately determine the operational capabilities of systems, identify hidden shortcomings and further develop optimal measures with the maximum improvement of indicators for financial expenses for major repairs of systems as a whole or individual elements.

RELATIONSHIP ON CLASS MANAGEMENT FOR LEARNING ACHIEVEMENTS STUDENTS IN BUILDING ENGINEERING EDUCATION DEPARTMENT, FACULTY OF ENGINEERING, UNIVERSITAS NEGERI MANADO

2019 ◽  
Vol Volume 2 Nomor 2 ◽  
Keyword(s):  
Student Achievement ◽  
Classroom Management ◽  
Engineering Education ◽  
Student Learning ◽  
Linear Regression Analysis ◽  
Education Department ◽  
Learning Achievement ◽  
Class Management ◽  
Department Faculty ◽  
Building Engineering

This study aims to determine whether there is a relationship between classroom management and student achievement in the Building Engineering Education Department, The Faculty of Engineering, Universitas Negeri Manado, and look for obstacles or obstacles that inhibit the success of student learning while looking for efforts to overcome these problems. This research method is correlational research. The results of a simple linear regression analysis of the variables of classroom management and student achievement in the Building Egineering Education Department, Faculty of Engineering, Universitas Negeri Manado obtained the equation of the regression line ỷ = 34.80 + 0.42 X, which illustrates that if class management increases by one unit, student achievement will increase amounting to 0.361 units. Similarly, the results obtained that the regression model is good enough, because based on the model deviation test shows that the deviation is not significant at the 5% test level in this case F (Calculate) = 0.73 <F (Table) = 2.43. Thus, the regression equation above can be used to estimate or predict learning achievement (Y) if class management (X) is known. The results of testing the hypothesis, it is evident that the classroom management variables (X) have a positive and significant effect on student learning achievement at the Building Egineering Education at Universitas Negeri Manado. Based on these results, there is a significant and positive relationship between classroom management and student achievement in the Building Egineering Education Department students at Universitas Negeri Manado.

Impact of Nanotechnology Patents on Green Development of China's Building Industry

2020 ◽  
Vol 14 (2) ◽  
pp. 141-152
Author(s):  
Xialing Sun ◽  
Rui Zhang ◽  
Xue Chen ◽  
Pengpeng Li ◽  
Jin Guo
Keyword(s):  
Total Factor Productivity ◽  
Inhibitory Effect ◽  
Building Industry ◽  
Factor Productivity ◽  
The Sustainable Development ◽  
Technological Support ◽  
Green Development ◽  
Panel Data Regression ◽  
The Impact ◽  
Building Engineering

Background: The sustainable development of the building industry has drawn increasing attention around the world. Nanomaterials and nanotechnology play an important role in the processes of energy saving and reducing consumption in the building industry. Nanotechnology patents provide key technological support for the green development of the building industry. Based on patent data in China, this paper quantitatively analyzed the application of nanotechnology patents in the building industry and the time trend, regional differences, and evolution of China's nano-patent applications in the building field. Methods: In this study, the environmental total factor productivity of the building industry considering carbon constraints was determined and then used as the dependent variable to measure the green development of the building industry. On this basis, a panel data regression model was constructed to determine the impact of nano-patents on the green development of the building industry. Results: Nanotechnology patents in the building industry can significantly improve total factor productivity. From the perspective of patent composition, technology-based patents that focus on substantial innovation can significantly promote the green development of the building industry, whereas strategic patents show a significant inhibitory effect. Regionally, the western region of China has the advantage of being less developed and thus more efficient than the central and eastern regions in the application of new nano-products. Finally, the research also showed a significant lag in the application of China's nanotechnology patents and low implementation efficiency. Conclusion: Nano patents can promote green development in the building industry, but there is room for improvement in the speed with which laboratory inventions are transformed into building engineering applications.

scholarly journals Investigating the energy flexibility of Dutch office buildings on single building level and building cluster level Journal of Building engineering

2021 ◽  
pp. 102687
Author(s):  
Christina Papachristou ◽  
Pieter-Jan Hoes ◽  
M.G.L.C. (Marcel) Loomans ◽  
T.A.J. (Dennis) van Goch ◽  
J.L.M. (Jan) Hensen
Keyword(s):  
Office Buildings ◽  
Building Level ◽  
Building Engineering ◽  
Cluster Level

scholarly journals The effect of flexural–torsional buckling on the stability of timber members: a case study

2021 ◽  
Vol 3 (6) ◽  
Author(s):  
Osama A. B. Hassan
Keyword(s):  
Axial Compression ◽  
Bending Moment ◽  
List Type ◽  
Torsional Buckling ◽  
Solution Methods ◽  
Simplified Solution ◽  
The Stability ◽  
Flexural Torsional Buckling ◽  
Building Engineering

Abstract This study investigates the stability of timber members subjected to simultaneously acting axial compression and bending moment, with possible risk for torsional and flexural–torsional buckling. This situation can occur in laterally supported members where one side of the member is braced but the other side is unbraced. In this case, the free side will buckle out of plane while the braced side will be prevented from torsional and flexural–torsional buckling. This problem can be evident for long members in timber-frame structures, which are subjected to high axial compression combined with bending moments in which the member is not sufficiently braced at both sides. This study is based on the design requirement stated in Eurocode 5. Solution methods discussed in this paper can be of interest within the framework of structural and building Engineering practices and education in which the stability of structural elements is investigated. Article Highlights This case study investigates some design situations where the timber member is not sufficiently braced. In this case, a stability problem associated with combined torsional buckling and flexural buckling can arise. The study shows that the torsional and/or flexural–torsional buckling of timber members can be important to control in order to fulfil the criteria of the stability of the member according to Eurocode 5 and help the structural engineer to achieve safer designs. The study investigates also a simplified solution to check the effect of flexural torsional buckling of laterally braced timber members.

scholarly journals Petrographic and Geotechnical Characteristics of Carbonate Aggregates from Poland and Their Correlation with the Design of Road Surface Structures

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2034
Author(s):  
Jerzy Trzciński ◽  
Emilia Wójcik ◽  
Mateusz Marszałek ◽  
Paweł Łukaszewski ◽  
Marek Krajewski ◽  
...  
Keyword(s):  
Road Surface ◽  
Surface Structures ◽  
Engineering Properties ◽  
Geological Engineering ◽  
Functional Relationships ◽  
Road Design ◽  
Geotechnical Characteristics ◽  
Design Calculations ◽  
Building Engineering ◽  
Design And Construction

The paper presents the basic problem related with practical application of carbonate rocks in construction: are carbonate aggregates produced from such rocks favorable for building engineering, particularly for road design and construction? To resolve this problem, (1) the geological-engineering properties of aggregates are presented, (2) the correlation between petrographic and engineering parameters is shown, and (3) a strict correlation between the geological-engineering properties and the freezing-thawing and crushing resistance is recognized. This knowledge has allowed to assess the usefulness of asphalt concrete (AC) made from dolomite and limestone aggregates in the design and construction of road surface structures. The petrography was characterized using optical microscopy and scanning electron microscopy (SEM) coupled with energy-dispersive X-ray spectroscope (EDS). Engineering properties were determined in accordance with European and Polish norms and guidelines. Statistical and design calculations were performed using dedicated software. The petrographic properties, and selected physical and mechanical parameters of the aggregates, were tested to show their influence on the freezing–thawing and crushing resistance. Strong functional relationships between the water adsorption, and the freezing–thawing and crushing resistance have been observed. Aggregate strength decreased after saturation with increasing concentrations of salt solutions. Calculations of AC fatigue durability and deformation allow for reducing the thickness of the road surface structure by about 20% in comparison to normative solutions. This conclusion has impact on the economy of road design and construction, and allows for a rational utilization of rock resources, which contributes to sustainable development of the construction industry.

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