Zeszyty Naukowe Politechniki Częstochowskiej. Budownictwo最新文献_第5页

КОНЕЧНО-ЭЛЕМЕНТНАЯ МОДЕЛЬ ЭЛЕКТРОННО-ЛУЧЕВОЙ ПАЙКИ ТВЕРДОСПЛАВНЫХ РЕЖУЩИХ ЭЛЕМЕНТОВ К ОПРАВКЕ 当然，电子束束束束束的元素模型

Zeszyty Naukowe Politechniki Częstochowskiej. Budownictwo Pub Date : 2021-01-01 DOI: 10.17512/znb.2020.1.07

Георгий Георгиевич Горанский, А. И. Поболь

引用次数: 3

O APROKSYMACJI FUNKCJI OSIADAŃ POWIERZCHNI TERENU WSKUTEK PODZIEMNEJ EKSPLOATACJI ZŁÓŻ Z UWZGLĘDNIENIEM DANYCH GEOMECHANICZNYCH MASYWU SKALNEGO NA POTRZEBY MODELOWANIA W BUDOWNICTWIE NA TERENACH GÓRNICZYCH

Zeszyty Naukowe Politechniki Częstochowskiej. Budownictwo Pub Date : 2021-01-01 DOI: 10.17512/znb.2020.1.19

W. Paleczek

引用次数: 0

THE EFFECT OF THE RESISTANCE SPOT WELDING CURRENT ON WELD QUALITY AND JOINT STRENGTH 电阻点焊电流对焊缝质量和接头强度的影响

Zeszyty Naukowe Politechniki Częstochowskiej. Budownictwo Pub Date : 2021-01-01 DOI: 10.17512/znb.2020.1.17

Judyta Niemiro-Maźniak

{"title":"THE EFFECT OF THE RESISTANCE SPOT WELDING CURRENT ON WELD QUALITY AND JOINT STRENGTH","authors":"Judyta Niemiro-Maźniak","doi":"10.17512/znb.2020.1.17","DOIUrl":"https://doi.org/10.17512/znb.2020.1.17","url":null,"abstract":"The paper provides an innovative – simplified and economical – method for constructing a dome-shaped roof that has become quite an urgent issue due to the development in the field of construction as well as large-scale ongoing construction of churches, monastery buildings, necropolis and other domed buildings over the last years in recent years in Georgia and other countries. With respect to construction, as compared with straight-line roofing concrete and framework consumption for constructing a dome is less by approximately 25÷30%. Besides, dome-shaped roofing provides a great number of opportunities to make various architectural solutions as well as enables to maintain the architectural traditions established over the centuries. However, construction of a monolithic dome technologically is quite a complex and timeconsuming process that in the first place is explained by the fact that an appropriate mold is necessary to create before. It describes a completely innovative construction of a molding system of the dome of 12 m in diameter with thin-shielded molds in levels and with an original solution of connection and fixation of the curved edges of the cathedral the second in size in Georgia on Mount Makhata in Tbilisi being under construction. As a result, along with significant saving of materials an unmolding process of the dome after it has been composed and concreted has been extremely simplified. It has been found out that by thinshielded molds it is possible to compose separate load-bearing elements of various complexity and configuration included in the molding system. Also, the process of joining in thickened blocks of the abovementioned elements as well as their mounting and firm fixation has been simplified. It should be noted as well unlimited possibilities of increasing extremely the features of their toughness by adding the edges of simple hardness. And what is more important, use of standard materials and molding devices significantly reduces labor and material consumption connected with formation of molds.","PeriodicalId":354926,"journal":{"name":"Zeszyty Naukowe Politechniki Częstochowskiej. Budownictwo","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125597185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

ANALYSIS OF THE LOAD-CARRYING CAPACITY OF A BOLTED CONNECTION BETWEEN A STEEL FLOOR BEAM AND A COLUMN 钢楼板梁与柱间螺栓连接的承载能力分析

Zeszyty Naukowe Politechniki Częstochowskiej. Budownictwo Pub Date : 2021-01-01 DOI: 10.17512/znb.2020.1.11

P. Kasza, J. Nawrot

引用次数: 1

THE OPTIMAL AMOUNT OF AIR FOR THE NATURAL VENTILATION OF CLASSROOMS AS A FUNCTION OF THE RATE OF OUTDOOR AIR LEAKAGE FROM WINDOWS 教室自然通风的最佳空气量是室外窗户漏风率的函数

Zeszyty Naukowe Politechniki Częstochowskiej. Budownictwo Pub Date : 2021-01-01 DOI: 10.17512/znb.2020.1.16

P. Lis

{"title":"THE OPTIMAL AMOUNT OF AIR FOR THE NATURAL VENTILATION OF CLASSROOMS AS A FUNCTION OF THE RATE OF OUTDOOR AIR LEAKAGE FROM WINDOWS","authors":"P. Lis","doi":"10.17512/znb.2020.1.16","DOIUrl":"https://doi.org/10.17512/znb.2020.1.16","url":null,"abstract":"In this paper, a reduction in the dynamic mechanical impact in Fert ceiling blocks with rubber filling is discussed. The research is conducted with the use of numerical methods based on the Finite Element Method (FEM). In order to observe the mechanical wave propagation in the form of stress plots, ADINA software is used. The analysis is performed with the use of a dynamic explicit module. Three different configurations of Fert concrete blocks are analyzed: Fert 40, Fert 45 and Fert 60. It is assumed that each block is subjected to a dynamic compressive pressure load applied to the top surface. The boundary conditions applied to the blocks represent simplified support on the concrete joists. In order to check how the rubber filling changes the mechanical wave energy transfer, blocks with and without rubber filler are analyzed. Through the analysis, it is shown that the larger the block size with rubber filling, the higher the reduction of mechanical wave energy transfer. Owing to that, the height of the insulation layer could be reduced to keep the same acoustic insulation parameters. On the other hand, the proposed rubber fill raises the overall mass of the blocks, which may negatively affect the ceiling bearing capacity.","PeriodicalId":354926,"journal":{"name":"Zeszyty Naukowe Politechniki Częstochowskiej. Budownictwo","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121772483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

THE INFLUENCE OF INTENSIVE PLASTIC DEFORMATION ON IRON-BASED MATERIALS BY FREE PRECIPITATION 自由析出对铁基材料强塑性变形的影响

Zeszyty Naukowe Politechniki Częstochowskiej. Budownictwo Pub Date : 2021-01-01 DOI: 10.17512/znb.2020.1.08

Оlena Gumen, V. Mykhailichenko, I. Selina, A. Ujma

{"title":"THE INFLUENCE OF INTENSIVE PLASTIC DEFORMATION ON IRON-BASED MATERIALS BY FREE PRECIPITATION","authors":"Оlena Gumen, V. Mykhailichenko, I. Selina, A. Ujma","doi":"10.17512/znb.2020.1.08","DOIUrl":"https://doi.org/10.17512/znb.2020.1.08","url":null,"abstract":"Global competition is setting new rules for the release and sale of products. Success is possible thanks to the introduction of effective tools in modern information technologies, which allow simulation of the process of production and supply, calculate the time spent and eliminate problematic issues with production, etc. Production planning, the first stage of product creation, is possible through the involvement of modeling. Our work aims to analyze the main stages of creating a simulation model in the FlexSim environment, to determine the interconnected impact of different parameters on the work of individual elements and the technological system in general. The automated technological process is considered as a multi-parameter system where input and output are interconnected. Each element of the process can be defined as a separate model, where the input of the initial data takes place, and at its output, we get the expected action that was programmed. The model created is considered by FlexSim as a system consisting of related parameters. The formed complex of optimal parameters in the production process is applicable, in particular, to the construction industry when solving decision-making tasks.","PeriodicalId":354926,"journal":{"name":"Zeszyty Naukowe Politechniki Częstochowskiej. Budownictwo","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124478870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

TRADITIONS OF SIHEYUAN MANOR IN CHINA'S MODERN ARCHITECTURE 四合院庄园在中国现代建筑中的传统

Zeszyty Naukowe Politechniki Częstochowskiej. Budownictwo Pub Date : 2021-01-01 DOI: 10.17512/znb.2020.1.26

P. Zhou, N. Kazhar

引用次数: 1

THE USE OF AN OPTICAL SYSTEM FOR BENDING AND TORSIONAL ANALYSES OF OPEN COLD-FORMED PROFILES 使用光学系统对开冷弯型材进行弯曲和扭转分析

Zeszyty Naukowe Politechniki Częstochowskiej. Budownictwo Pub Date : 2021-01-01 DOI: 10.17512/znb.2020.1.12

M. Kosiń

{"title":"THE USE OF AN OPTICAL SYSTEM FOR BENDING AND TORSIONAL ANALYSES OF OPEN COLD-FORMED PROFILES","authors":"M. Kosiń","doi":"10.17512/znb.2020.1.12","DOIUrl":"https://doi.org/10.17512/znb.2020.1.12","url":null,"abstract":"The last stage of grinding concrete surfaces is performed by floaters with solid grinding discs, where the working element consists of a solid wheel. The working element uses the full surface of the disc, ensuring maximum geometrical effectiveness. The disc rotates around its center and at the same time, it is in a steady progressive movement. The effectiveness chart Sg for the solid disc with common kinematic parameters has a local minimum at the inside and zero values on the edges of the machining area. Increasing the effectiveness of the machining at the edges is accomplished by overlapping areas of machining in subsequent cycles. Increasing the local minimum effectiveness can be achieved by applying a two-element disc consisting of concentric machining elements ring and wheel. Optimal selection of the rotation speed and wheel radius gives better uniformity of two-element disc machining in comparison to the solid disc. The grinding uniformity of areas with widths smaller than the diameter of the disc can be achieved by machining them with the biggest effect uniformity area of action. The best effect can be achieved by using both methods at the same time.","PeriodicalId":354926,"journal":{"name":"Zeszyty Naukowe Politechniki Częstochowskiej. Budownictwo","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127178715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

WPŁYW KIERUNKU I PRĘDKOŚCI WIATRU NA PARAMETRY PRACY WYWIETRZAKA GRAWITACYJNEGO S-160

Zeszyty Naukowe Politechniki Częstochowskiej. Budownictwo Pub Date : 2021-01-01 DOI: 10.17512/znb.2020.1.04

A. Deska, A. Rubnikowicz

引用次数: 0

ZEOLIT JAKO DODATEK DO ZAPRAW I BETONÓW

Zeszyty Naukowe Politechniki Częstochowskiej. Budownictwo Pub Date : 2021-01-01 DOI: 10.17512/znb.2020.1.22

Maria Pietras, J. Konkol

引用次数: 1