Anforderungsermittlung für adaptive Stützen und Aussteifungselemente in Tragkonstruktionen/Requirements Determination for Adaptive Supports and Bracing Elements in Building Structures

Konstruktion ◽  
2021 ◽  
Vol 73 (10) ◽  
pp. 64-70
Author(s):  
Timon Burghardt ◽  
Clemens Honold ◽  
Matthias Bachmann ◽  
Daniel Roth ◽  
Hansgeorg Binz ◽  
...  
Keyword(s):  
Building Structures ◽  
Requirements Determination

Inhalt Die Auslegung von konventionellen Gebäudetragwerken orientiert sich an der kritischen Lastfallkombination. Jedoch tritt dieser Fall nur sehr selten oder nie auf. Somit ist dieses für die überwiegend auftretenden Lasten überdimensioniert. Bei adaptiven Tragwerken beeinflussen integrierte Sensor-Aktor-Systeme gezielt den Lastabtrag. Dadurch können Maximalbeanspruchungen einzelner Tragwerkselemente reduziert werden. Wird dies bei der Dimensionierung berücksichtigt, können der Materialeinsatz und die Treibhausgasemissionen über alle Phasen des Lebenszyklus reduziert werden. Dieser Beitrag stellt die Grundlagen zu adaptiven Tragwerken und die Anforderungsermittlung an das Aktorsystem für das adaptive Demonstrator-Hochhaus vor, das im Frühjahr 2021 an der Universität Stuttgart errichtet wurde.

Main Provisions Of The Concept Of Technology Of Diamond Cutting And Drilling Of Building Structures

2019 ◽  
pp. 59-63
Keyword(s):  
Combustion Engine ◽  
Front Surface ◽  
The Body ◽  
Building Structures ◽  
Diamond Cutting ◽  
Variable Diameter ◽  
Diamond Drilling ◽  
Single Structure ◽  
New Construction ◽  
Non Destructive

The main provisions of the concept of technology of diamond cutting and drilling of building structures are considered. The innovativeness of the technology, its main possibilities and advantages are presented. Carrying out works with the help of this technology in underwater conditions expands its use when constructing and reconstructing hydraulic structure. The use of diamond drilling equipment with motors equipped with an internal combustion engine is considered. Drilling holes with a variable diameter during the reconstruction of the runways of airfields makes it possible to combine the landing mats into a single structure. The ability to cut inside the concrete mass, parallel to the front surface, has no analogues among the methods of concrete treatment. The use of this technology for producing blind openings in the body of concrete without weakening the structure is also unique. Work with precision quality in cutting and diamond drilling of concrete and reinforced concrete was noted by architects and began to be implemented in the manufacture of inter-room and inter-floor openings. Non-destructive approach to the fragmentation of building structures allows them to be reused. The technology of diamond cutting and drilling is located at the junction of new construction, repair, reconstruction of buildings and structures, and dismantling of structures. Attention is paid to the complexity and combinatorial application of diamond technology. Economic efficiency and ecological safety of diamond technology are presented. The main directions of further research for the development of technology are indicated.

DETERMINATION OF PERFORMANCE INDICATORS OF THE TRUCK KrAZ-6510TE

2020 ◽  
pp. 19-26
Author(s):  
Olexandr Pavlenko ◽  
Serhii Dun ◽  
Maksym Skliar
Keyword(s):  
Mathematical Model ◽  
Surface Friction ◽  
Building Structures ◽  
Maximum Torque ◽  
Military Equipment ◽  
Military Vehicles ◽  
Force Magnitude ◽  
Vehicle Mobility ◽  
The Mathematical Model

In any economy there is a need for the bulky goods transportation which cannot be divided into smaller parts. Such cargoes include building structures, elements of industrial equipment, tracked or wheeled construction and agricultural machinery, heavy armored military vehicles. In any case, tractor-semitrailer should provide fast delivery of goods with minimal fuel consumption. In order to guarantee the goods delivery, tractor-semitrailers must be able to overcome the existing roads broken grade and be capable to tow a semi-trailer in off-road conditions. These properties are especially important for military equipment transportation. The important factor that determines a tractor-semitrailer mobility is its gradeability. The purpose of this work is to improve a tractor-semitrailer mobility with tractor units manufactured at PJSC “AutoKrAZ” by increasing the tractor-semitrailer gradeability. The customer requirements for a new tractor are determined by the maximizing the grade to 18°. The analysis of the characteristics of modern tractor-semitrailers for heavy haulage has shown that the highest rate of this grade is 16.7°. The factors determining the limiting gradeability value were analyzed, based on the tractor-semitrailer with a KrAZ-6510TE tractor and a semi-trailer with a full weight of 80 t. It has been developed a mathematical model to investigate the tractor and semi-trailer axles vertical reactions distribution on the tractor-semitrailer friction performances. The mathematical model has allowed to calculate the gradeability value that the tractor-semitrailer can overcome in case of wheels and road surface friction value and the tractive force magnitude from the engine. The mathematical model adequacy was confirmed by comparing the calculations results with the data of factory tests. The analysis showed that on a dry road the KrAZ-6510TE tractor with a 80 t gross weight semitrailer is capable to climb a gradient of 14,35 ° with its coupling mass full use condition. The engine's maximum torque allows the tractor-semitrailer to overcome a gradient of 10.45° It has been determined the ways to improve the design of the KrAZ-6510TE tractor to increase its gradeability. Keywords: tractor, tractor-semitrailer vehicle mobility, tractor-semitrailer vehicle gradeability.

Simulation of the internal temperature in the Passol Laboratory, University of Debrecen

2012 ◽  
Vol 3 (1) ◽  
pp. 63-73 ◽  
Author(s):  
I. Csáky ◽  
F. Kalmár
Keyword(s):  
Temperature Variation ◽  
Air Temperature ◽  
Indoor Air ◽  
Storage Capacity ◽  
Building Structures ◽  
Internal Temperature ◽  
The One ◽  
Heavy Structure ◽  
East West ◽  
Made In

Abstract Nowadays the facades of newly built buildings have significant glazed surfaces. The solar gains in these buildings can produce discomfort caused by direct solar radiation on the one hand and by the higher indoor air temperature on the other hand. The amplitude of the indoor air temperature variation depends on the glazed area, orientation of the facade and heat storage capacity of the building. This paper presents the results of a simulation, which were made in the Passol Laboratory of University of Debrecen in order to define the internal temperature variation. The simulation proved that the highest amplitudes of the internal temperature are obtained for East orientation of the facade. The upper acceptable limit of the internal air temperature is exceeded for each analyzed orientation: North, South, East, West. Comparing different building structures, according to the obtained results, in case of the heavy structure more cooling hours are obtained, but the energy consumption for cooling is lower.

Аdaptability of building structures for oil and gas fields

2017 ◽  
pp. 100-103
Author(s):  
A.V. Antonov ◽  
◽  
Yu.V. Maksimov ◽  
A.N. Korkishko ◽  
◽  
...  
Keyword(s):  
Oil And Gas ◽  
Building Structures ◽  
Oil And Gas Fields ◽  
Gas Fields

Inventing Synagogue Conversion

2013 ◽  
Vol 4 (3) ◽  
pp. 401-416
Author(s):  
Shira L. Lander
Keyword(s):  
Religious Belief ◽  
Sacred Space ◽  
Sixth Century ◽  
Building Structures ◽  
Late Antique ◽  
Complex Processes ◽  
Space Transformation

Historians of the ancient synagogue often use the term “conversion” to describe any kind of adaptation of a building once designated as a synagogue into a church. This label oversimplifies and misconstrues complex processes, both rhetorical and architectural, that were at work in transforming the landscape of the late antique Mediterranean. I explore the dynamic of this triumphalist rhetoric and architectural strategy, showing that Christian writers meant something very specific by the term “conversion,” and that they invented the paradigm of synagogue conversion in order to interpret the changing landscape to their readers. The architectural program of replacement as a strategy for converting subject populations to Christianity emerged in the sixth century. By characterizing changes made to building structures and changes in religious belief as “conversion,” imperial policy concretized the association of sacred space transformation with the victory of Christianity over Judaism and paganism.

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