03.18: Anchor bolt tensile load distribution: Effects of the column base-plate design: Wide flange column bases - loading on additional line of bolts

ce/papers ◽  
2017 ◽  
Vol 1 (2-3) ◽  
pp. 649-658
Author(s):  
Rafael Scudelari de Macedo ◽  
Luiz Francisco Scudelari de Macedo
Keyword(s):  
Load Distribution ◽  
Tensile Load ◽  
Base Plate ◽  
Additional Line ◽  
Anchor Bolt ◽  
Plate Design ◽  
Column Bases ◽  
Column Base

scholarly journals MODELLING COLUMN BASES OF SEMI-RIGID STEEL FRAMES: STIFFNESS AND STRENGTH CALCULATION / PUSIAU STANDŽIŲ PLIENINIŲ RĖMŲ PĖDŲ MODELIAVIMAS, STANDŽIO IR STIPRIO NUSTATYMAS

2012 ◽  
Vol 4 (4) ◽  
pp. 300-305
Author(s):  
Žilvinas Bučmys ◽  
Rimtautas Dališanskis
Keyword(s):  
Finite Element ◽  
Nonlinear Analysis ◽  
Steel Frames ◽  
Base Plate ◽  
Linear Analysis ◽  
Calculation Methods ◽  
Anchor Bolt ◽  
Solid Works ◽  
Column Bases ◽  
Column Base

The paper examines the models and stiffness efficiency of the column base of semi-rigid steel frames, reviews stiffness calculation methods and calculates the rotation of column base connection in two ways: analytical, according to LST EN 1993-1-8, and finite element, applying nonlinear analysis. Two groups of modelling have been made: the first group deals with changes in the thickness of the base plate; the second one shows a different diameter of the anchor bolt. The obtained results reveal the influence of the base plate and anchor bolt on the stiffness of column base connection. The article discusses differences in the euro code and linear analysis: minimum difference makes 61,6% and maximum – 73,7%. For calculating the strength of the column base, a conservative model has been employed, i.e. according to the Eurocode, the received values are smaller compared to nonlinear analysis: minimum difference makes 37,0% and maximum – 49,0%. Santrauka Nagrinėjamas pusiau standžių plieninių rėmų pėdų modeliavimas ir standumo nustatymo efektyvumas. Apžvelgti kolonos pėdų standumo nustatymo metodai. Apskaičiuotas kolonos pėdos pasisukimas dviem būdais: pagal analitines išraiškas, kurios pateiktos LST EN 1993-1-8 dalyje, ir baigtinių elementų programą „Solid Works“ taikant netiesinę analizę. Sumodeliuotos dvi grupės: pirmojoje keičiamas pėdos pamatinės plokštės storis, o kitoje – inkarinio varžto skersmuo. Rezultatai rodo kolonos pėdos komponentų inkarinio varžto ir pamatinės plokštės įtaką bazės kampiniam posūkiui. Iš gautų rezultatų matyti, kad pagal Eurokodą ir netiesinę analizę kampiniai posūkiai skiriasi. Mažiausias skirtumas yra 61,6 %, o didžiausias – 73,7 %. Atliekant pėdos stiprumo skaičiavimus taikomas konservatyvus modelis – skaičiuojant pagal Eurokodą 3 gautos mažesnės reikšmės negu taikant netiesinę analizę. Mažiausias skirtumas yra 37,0 %, o didžiausias – 49,0 %.

scholarly journals Anchor Bolt Position in Base Plate In Terms Of T and J Anchor Bolt

2017 ◽  
Vol 97 ◽  
pp. 01110 ◽  
Author(s):  
Mohamad Hairi b Osman ◽  
Luqmanalhakim bin Imran ◽  
Hannifah binti Tami ◽  
Nor Azira bt Abdul Rahman ◽  
Salman bin Salim
Keyword(s):  
Base Plate ◽  
Anchor Bolt

scholarly journals Comparison of Pigtail with J Anchor Bolt in Normal Concrete

2018 ◽  
Vol 150 ◽  
pp. 03001
Author(s):  
Mohamad Hairi Osman ◽  
Mohamad Nur Mustaqim Abd Shukor ◽  
Suraya Hani Adnan ◽  
Mohamad Luthfi Ahmad Jeni ◽  
Mohd Sufyan Abdullah ◽  
...  
Keyword(s):  
Load Capacity ◽  
Testing Machine ◽  
Tensile Load ◽  
Steel Structure ◽  
Maximum Load ◽  
Anchor Bolt ◽  
Average Value ◽  
Two Samples ◽  
Bending Radius ◽  
Anchor Bolts

Anchor bolts have been used to attach the steel structure of concrete and transfer load into the concrete. Anchor bolts in concrete are to withstand the shear force as they connect steel beams to the reinforced concrete foundations. The research was carried out to increase the understanding and investigating the performance of anchor bolts Pigtail since there is a lack of research on the bolt and to compare it with anchor bolts J which have been widely used by the industry. According to the methodology, testing the tensile load was used in this research to get a maximum load capacity of the anchor bolt in concrete. The sample was embedded in concrete cylinders of 75mm radius and 300mm height. Depths of embedment were 200mm, 230mm, and 260mm. The Universal Testing Machine, UTM was used to test the strength of tensile. 12 samples were used, each type and depth used two samples to get the average value using concrete grade 30. The samples underwent the process of curing for 28 days. The anchor bolts J used a 40mm bending radius and the length of hook was 100mm. Anchor bolts pigtail also used the 10 bending radius with depth of 8mm that have been compressed using 16mm radius rigs with a load of 500kN. Results of the research showed the depth of 260mm for Pigtail almost the same with J 60.529kN and 53.628kN and anchor bolts J were 75.557kN and 76.332kN. Difference of the values was not too far vary when compared with the 200mm and 230mm depths. Each comparison showed the ability of each bolt and anchor bolt failure occurred. Performance of the anchor bolts pigtail can be used on a structure or a higher load at an embedment of 260mm. Embedment of 200mm and 230mm can be used on a lighter load if steel material saving is a priority in every usage.

scholarly journals Modifikasi Design Heatsink dan Dudukan Peltier pada Alat Transportasi Ikan Segar

2020 ◽  
Vol 15 (2) ◽  
pp. 151
Author(s):  
Tri Nugroho Widianto ◽  
Luthfi Assadad ◽  
Ahmat Fauzi
Keyword(s):  
Temperature Measurement ◽  
Lower Cost ◽  
Base Plate ◽  
Production Costs ◽  
Fresh Fish ◽  
Design Specifications ◽  
Plate Design ◽  
Material Price

Alat transportasi ikan segar (ALTIS) adalah sarana pendingin yang dapat mempertahankan mutu ikan segar. ALTIS umumnya digunakan oleh pedagang kelliling dalam transportasi dan distribusi produknya. Komponen yang menentukan kinerja pendingin adalah heatsink dan dudukan peltier. Kedua bagian ini berfungsi dalam transfer panas kotak penyimpanan ikan menuju udara. Namun, biaya produksi dan harga material kedua komponen tersebut cukup tinggi. Penelitian ini bertujuan untuk modifikasi spesifikasi heatsink dan dudukan peltier, agar mendapatkan efisiensi biaya pembuatannya. Heatsink dibuat dari 3 mm plat tembaga dengan 18 sirip aluminium yang memiliki ketinggian 10 mm dan ketebalan 1 mm. Sementara itu, dudukan peltier juga dibuat dari alumunium dengan ketebalan bervariasi (4, 5, 6, dan 10 mm). Performa kedua bagian ini diuji dengan variabel suhu heatsink dalam, heatsink luar, dan ruang penyimpanan ikan, setiap 5 menit selama 95 menit. Hasil pengujian menunjukkan bahwa suhu ruang penyimpanan ikan menggunakan heatsink baru (17,8°C) lebih rendah dari heatsink sebelumnya (18,3°C). Desain heatsink yang baru ini dapat mengurangi biaya pembuatan sebesar Rp. 807.000,00. Dudukan elemen peltier dengan alumunium setebal 4 mm dapat mempercepat proses perpindahan panas dari ruang penyimpanan ikan menuju peltier. Modifikasi ini dapat diaplikasikan untuk menurunkan biaya dan meningkatkan performa ALTIS.ABSTRACTRefrigerated Fresh Fish Container (ALTIS) is a cooler equipment to maintain the quality of fresh fish. ALTIS is usually used by the itinerant fish traders to preserve their products in transportation and distribution. The components that determine the cooler performance are the heatsinks and the Peltier base plate. These components are responsible for transferring the heat from the fish container to the air. However, the production costs and material price for both components are expensive. This study aimed to reduce production costs by modifying the heatsink and Peltier base plate design specifications. The heatsink was made from 3 mm thickness copper and aluminum fins. The aluminum fins were 18 pieces in total, with 1.6 mm thickness and 10 mm height. Meanwhile, the Peltier base plate was also made from aluminum with varied thicknesses (4, 5, 6, and 10 mm). The performance of both parts was evaluated by temperature measurement in the inner heatsink, outer heatsink, and box container for every 5 minutes in 95 minutes. The results showed that the refrigerated container box temperature with the new heatsink (17.8°C) was lower than the existing heatsink (18.3°C). Moreover, the new heatsink design may reduce the production costs by Rp. 807,000.00. Furthermore, the Peltier base plate with a 4 mm thickness could accelerate the heat-dissipating of Peltier. Thus, the modification can be applied for ALTIS production with lower cost and better performance.

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