Tehnicki Vjesnik-Technical Gazette最新文献_第4页

Structural Design of Pressure Pipeline Wedge-Shaped Concrete Piers 压力管道楔形混凝土桥墩结构设计

IF 0.9 4区工程技术

Tehnicki Vjesnik-Technical Gazette Pub Date : 2023-10-15 DOI: 10.17559/tv-20230308000423

Yanfang Li, Yonghua Wang, Jingyao Cai, Chao Ren, Bo Zhang, Bing Zhang

{"title":"Structural Design of Pressure Pipeline Wedge-Shaped Concrete Piers","authors":"Yanfang Li, Yonghua Wang, Jingyao Cai, Chao Ren, Bo Zhang, Bing Zhang","doi":"10.17559/tv-20230308000423","DOIUrl":"https://doi.org/10.17559/tv-20230308000423","url":null,"abstract":": This paper proposed a wedge concrete fixed pier device based on self-locking to solve the problems existing in the fixed pier of water supply pipeline in utility tunnels. The system converted the horizontal thrust, originally applied to the weld seam in the pipeline, into oblique downward pressure by bending the pipeline upward. When the pipeline was bent upward at an angle equal to twice the horizontal angle of the wedge concrete fixed pier, then the fixed pier achieved the variable pressure-bearing effect in the horizontal direction through the self-locking between the concrete pier and the bottom plate of the utility tunnels. In addition, this avoided the damage to the fixed pier device, caused by the instantaneous pipeline internal pressure exceeding the maximum bearing thrust of the weld seam. The wedge fixed pier could be poured twice when the pipeline entered the utility tunnels, saving the rework cost of pouring the concrete again due to the changes of the design positioning of the water supply pipeline. As long as the area of the built-in steel fittings in the wedge concrete exceeded a certain range, the wedge concrete pier would not be crushed.","PeriodicalId":49443,"journal":{"name":"Tehnicki Vjesnik-Technical Gazette","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76496074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of the Research Trend of Global Value Chain Based on Literature Metrology and Visualization Technology 基于文献计量与可视化技术的全球价值链研究趋势分析

IF 0.9 4区工程技术

Tehnicki Vjesnik-Technical Gazette Pub Date : 2023-10-15 DOI: 10.17559/tv-20221018114614

Jianhua Dai, Shuanglei Xu

引用次数: 0

Cassinian Directorial Surfaces Modelling as Geometric Pattern in Designing Architectural Structures 卡西尼方向曲面造型在建筑结构设计中的应用

IF 0.9 4区工程技术

Tehnicki Vjesnik-Technical Gazette Pub Date : 2023-10-15 DOI: 10.17559/tv-20220622234115

引用次数: 0

Study on the Evolution Mechanism of Lane Change Decision in Urban Expressway Diversion Area 城市快速路导流区变道决策演化机制研究

IF 0.9 4区工程技术

Tehnicki Vjesnik-Technical Gazette Pub Date : 2023-10-15 DOI: 10.17559/tv-20230409000516

引用次数: 0

Application of Hyperbolic Paraboloid in Architectural Design 双曲抛物面在建筑设计中的应用

IF 0.9 4区工程技术

Tehnicki Vjesnik-Technical Gazette Pub Date : 2023-10-15 DOI: 10.17559/tv-20230306000407

Qiheng Wang, Associate Professor Yang LI, Doctor Zixuan WANG

{"title":"Application of Hyperbolic Paraboloid in Architectural Design","authors":"Qiheng Wang, Associate Professor Yang LI, Doctor Zixuan WANG","doi":"10.17559/tv-20230306000407","DOIUrl":"https://doi.org/10.17559/tv-20230306000407","url":null,"abstract":": Hyperbolic paraboloid is a kind of ruled space surface with beautiful shape. It is often used in architectural design and can achieve a free and flexible appearance effect. Due to the complexity of curved surfaces, many architects do not know how to navigate them. The main purpose of this article is to explore how to use hyperbolic paraboloids in architectural design. Firstly, the formation principle of hyperbolic paraboloid is analyzed from a mathematical perspective. Then, through investigating examples, it expounds its application in architectural design. Hyperbolic paraboloids are mainly used in building roofs, especially in large span buildings. There are three uses of hyperbolic paraboloids in roofs, corresponding to three different architectural shapes.The first is to cut a hyperbolic paraboloid vertically with four planes, and the contour projection is a rectangle or parallelogram. The second is to cut the hyperbolic paraboloid vertically and horizontally with four planes, and the contour projection is a curved quadrilateral. The third is to cut hyperbolic paraboloid with elliptic surface, and the contour projection is an ellipse. Finally, the conclusion is drawn on how to flexibly use hyperbolic paraboloids in architectural design, and what are the advantages and disadvantages of hyperbolic paraboloids, which has important reference value for architects to carry out related designs.","PeriodicalId":49443,"journal":{"name":"Tehnicki Vjesnik-Technical Gazette","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82451577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Split Ring Resonator Inspired Dual-Band Monopole Antenna for ISM, WLAN, WIFI, and WiMAX Application 用于ISM, WLAN, WIFI和WiMAX应用的劈开环谐振器启发双带单极天线

IF 0.9 4区工程技术

Tehnicki Vjesnik-Technical Gazette Pub Date : 2023-10-15 DOI: 10.17559/tv-20230210000344

Roja Ganesan, Maheswara Venkatesh, Jayasankar Thangaiyan, Lecturer Ms. Roja GANESAN, Dr. Maheswara Venkatesh Panchavarnam

{"title":"Split Ring Resonator Inspired Dual-Band Monopole Antenna for ISM, WLAN, WIFI, and WiMAX Application","authors":"Roja Ganesan, Maheswara Venkatesh, Jayasankar Thangaiyan, Lecturer Ms. Roja GANESAN, Dr. Maheswara Venkatesh Panchavarnam","doi":"10.17559/tv-20230210000344","DOIUrl":"https://doi.org/10.17559/tv-20230210000344","url":null,"abstract":": A dual-band antenna is used for several wireless networks like ISM, WLAN, WiMAX, and WiFi. The antenna's uppermost element is a monopole shape with a rectangular protrusion. Antennas are created in CST. Using a 19-millimetre-wide by 31-millimetre-long FR4 substrate, the antenna is created in a design environment. Due to the SRR printing in the ground and the antenna's defective ground structure, the antenna is able to achieve dual resonance. A split ring resonator printed at the base also helps achieve a second resonance. With the help of a parameter analysis, we can pick the optimal proportions for the design. The antenna resonates at both 2.3 and 5.8 GHz. We construct and test the antenna. The results obtained through simulation are equivalent to those obtained from measurements in terms of s11, gain, and directivity, as well as E-plane and H-plane patterns. Because of its compact size, consistent radiation pattern, dual-band use, and excellent impedance matching and bandwidth, the suggested antenna is an excellent choice for use in ISM networks and other wireless applications.","PeriodicalId":49443,"journal":{"name":"Tehnicki Vjesnik-Technical Gazette","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81326529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

3D Reconstruction of Optical Building Images Based on Improved 3D-R2N2 Algorithm 基于改进3D- r2n2算法的光学建筑图像三维重建

IF 0.9 4区工程技术

Tehnicki Vjesnik-Technical Gazette Pub Date : 2023-10-15 DOI: 10.17559/tv-20230323000469

引用次数: 0

Fuzzy Multi-Objectives Topology Optimization of Slider Pallet in the Picking Machine of Camellia Fruit 油茶采摘机滑块托盘模糊多目标拓扑优化

IF 0.9 4区工程技术

Tehnicki Vjesnik-Technical Gazette Pub Date : 2023-10-15 DOI: 10.17559/tv-20230111000218

Chengji Mi, Yang Hai, Fazhan Wu, Liang Luo, Zejun Chen, Youhua Fan, Di Kang

{"title":"Fuzzy Multi-Objectives Topology Optimization of Slider Pallet in the Picking Machine of Camellia Fruit","authors":"Chengji Mi, Yang Hai, Fazhan Wu, Liang Luo, Zejun Chen, Youhua Fan, Di Kang","doi":"10.17559/tv-20230111000218","DOIUrl":"https://doi.org/10.17559/tv-20230111000218","url":null,"abstract":". In order to improve the dynamic characteristics of the slider pallet in the camellia fruit picking machine under the traditional empirical design and to lighten the weight, a fuzzy multi-objective topology optimization design method was proposed. In this paper, a static and dynamic topology optimization mathematical model was constructed by the compromise programming method, and the weight coefficients of each sub-objective were dynamically assigned by the fuzzy satisfaction variable weight coefficient method, and then the fuzzy multi-objective topology optimization design of the slider pallet for bending condition, bending-torsional complex condition, inertia condition and the first three orders of dynamic frequency was performed. The optimization results showed that the weight of the optimized slider pallet was reduced by 19.4%, and the first-order modal frequency was increased by 5.0%, second order modal frequency increased by 6.6%, third order modal frequency increased by 8.2%; the maximum deformation and maximum stress were increased, but still met the design requirements.","PeriodicalId":49443,"journal":{"name":"Tehnicki Vjesnik-Technical Gazette","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85758282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of Dynamic Icons on the Perceived Usability in the Travel App 动态图标对旅游应用可用性感知的影响

IF 0.9 4区工程技术

Tehnicki Vjesnik-Technical Gazette Pub Date : 2023-08-15 DOI: 10.17559/tv-20221128070431

引用次数: 0

Research on Safety Investment Decision Evaluation and Optimization of Network Booking Taxi Platform Enterprise based on Subjective-Objective Assessment Method 基于主客观评价法的网约车平台企业安全投资决策评价与优化研究

IF 0.9 4区工程技术

Tehnicki Vjesnik-Technical Gazette Pub Date : 2023-08-15 DOI: 10.17559/tv-20221218093637

引用次数: 0