Semesta Teknika最新文献_第9页

Perkuatan Struktur Jembatan Kereta Api Rangka Baja Tipe Warren bentang 42 Meter 沃伦型铁路桥梁结构42米的强度

Semesta Teknika Pub Date : 2019-07-22 DOI: 10.18196/ST.222244

Bagus Soebandono, Bintang Noorrohmad Wahyu Nugroho, Ariq Naufal Anam, Raka Putra Ismayana, T. Maulana

{"title":"Perkuatan Struktur Jembatan Kereta Api Rangka Baja Tipe Warren bentang 42 Meter","authors":"Bagus Soebandono, Bintang Noorrohmad Wahyu Nugroho, Ariq Naufal Anam, Raka Putra Ismayana, T. Maulana","doi":"10.18196/ST.222244","DOIUrl":"https://doi.org/10.18196/ST.222244","url":null,"abstract":"Jembatan kereta api merupakan salah satu prasarana transportasi penting \u0000dalam memenuhi kebutuhan manusia. Seiring dengan bertambahnya usia suatu \u0000struktur, maka jembatan kereta api juga akan mengalami penurunan kapasitas yang \u0000disebabkan oleh faktor internal maupun faktor eksternal. Melihat dari kegunaan \u0000jembatan kereta api yang sangat penting, maka dibutuhkan struktur yang kuat serta \u0000mampu menjamin keamanan dan keselamatan. Perkuatan merupakan salah satu \u0000usaha untuk mengembalikan kapasitas muat suatu struktur sehingga mampu \u0000menahan beban yang terjadi. Dalam penelitian ini jembatan kereta api rangka baja \u0000tipe warren mengalami penurunan mutu baja sebesar 30%. Analisis dan pemodelan \u0000struktur rangka baja menggunakan software SAP2000 V.20 yang kemudian \u0000dilakukan perkuatan dengan mengganti elemen-elemen lemah pada struktur rangka \u0000baja. Hasil penelitian menunjukan bahwa, nilai mode shapes maksimum setelah \u0000dilakukan perkuatan pada arah perpindahan UX memiliki nilai yang lebih besar \u00000,072% dari sebelum dilakukan perkuatan yaitu dari 0,825365 menjadi 0,825962 \u0000serta nilai periode (T) juga mengalami peningkatan sebesar 1,603% dari 0,370023 \u0000detik menjadi 0,375957 detik. Lendutan maksimum yang terjadi ditunjukan pada \u0000displacement arah U3 joint 18 setelah dilakukan perkuatan mengalami penurunan \u0000sebesar 32,85% dari 36,437377 mm menjadi 24,467447 mm. Pada evaluasi \u0000tegangan, terdapat 25 batang yang mengalami field capacity yang kemudian \u0000dilakukan perkuatan dengan mengganti 17 batang dengan memperbesar dimensi \u0000profil sehingga seluruh batang tidak mengalami field capacity. Nilai tahanan \u0000maksimum pada batang yang tidak aman setelah dilakukan perkuatan menjadi lebih \u0000kecil dari 25,324 ton menjadi 23,861 ton dengan kapasitas yang meningkat dari \u000012,612 ton menjadi 34,824 ton.","PeriodicalId":33667,"journal":{"name":"Semesta Teknika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47105924","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: 0

Analisis Pengaruh Metode Taman Hujan dalam Menurunkan Debit dan Kekeruhan Air Limpasan Permukaan 彩虹公园法缓蚀剂在减少欠费和洪水凹陷中的应用分析

Semesta Teknika Pub Date : 2018-08-28 DOI: 10.18196/st.v16i2.4898

Irfan Jufianto, J. Ikhsan, Burhan Barid

{"title":"Analisis Pengaruh Metode Taman Hujan dalam Menurunkan Debit dan Kekeruhan Air Limpasan Permukaan","authors":"Irfan Jufianto, J. Ikhsan, Burhan Barid","doi":"10.18196/st.v16i2.4898","DOIUrl":"https://doi.org/10.18196/st.v16i2.4898","url":null,"abstract":"The alteration in land use causes the loss of infiltration areas replaced by rigid pavement yet demand for groundwater is increasing thus unbalance in hydrology cycle occurred and water became the problem for human as the problem for this country nowadays. One of the solutions to keep the storage of groundwater is to make the rain garden in the area near the run-off sources. Nonetheless studied about rain garden only focus on the effect of pollution in the river and study about the impact of reducing run-off debit and turbidity has not been explored yet. Three infiltration models that had been used for this research were infiltration model with soil-only, rain garden, and the rain garden with infiltration hole. The results presented by the study were compared to get the efficient value from each infiltration model in reducing debit and turbidity in the unsaturated and saturated soil. The result of this study showed that the rain garden model with infiltration hole performed better result with unit time reliability for 3 minutes and higher efficiency value of 54.17% on unsaturated soil and 53.81% on saturated soil. It can also reduce the suspension in the surface run-off until 0 mg/l.","PeriodicalId":33667,"journal":{"name":"Semesta Teknika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43193376","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

Kajian Kadar Lumpur pada Model Infiltrasi Buatan dengan Variasi Kemiringan Tanah dan Tanaman 考虑土地和植物配置变化的性能入渗模型的流量试验

Semesta Teknika Pub Date : 2018-08-28 DOI: 10.18196/st.v16i2.4897

Usep Supriatna

{"title":"Kajian Kadar Lumpur pada Model Infiltrasi Buatan dengan Variasi Kemiringan Tanah dan Tanaman","authors":"Usep Supriatna","doi":"10.18196/st.v16i2.4897","DOIUrl":"https://doi.org/10.18196/st.v16i2.4897","url":null,"abstract":"From various soil conditions, there are need some efforts to restore soil functions as a water absorbent that is expected to reduce the excessive surface runoff indirectly and to increase infiltration. The purpose of this study was to calculate Total Suspended Solid (TSS) level on artificial infiltration model using the three media (grassland, krokot land, and vacant land) with the variation slope of 5°, 10°, 15° and 20°. This research also to understand the influence of soil media variety and land slope on TSS of artificial infiltration model. This research was carried out by preparing an artificial wood model with size 200 cm x 150 cm x 100 cm, which was then divided into three parts with each of them is 200 cm x 50 cm x 100 cm and used for soil media placement. The discharged water used in all three media was the same that is equal to 0.237ℓ/sec. For the results representative in each study, 100 mℓ of water samples can be taken in the runoff on the model for each soil media and then immediately examined the levels of TSS in the laboratory. According to the variation slope, the results of the research showed that the TSS on the grass soil media was 4700 mg/ℓ, 9200 mg/ℓ, 9500 mg/ℓ and 10 000 mg/ℓ. For krokot soil, the TSS was 6500 mg/ℓ, 66000 mg/ℓ, 126000 mg/ℓ and 273 900 mg/ℓ, while for vacant land was 5100 mg/ℓ, 101500 mg/ℓ, 109500 mg/ℓ and 243600 mg/ℓ. Furthermore, the steeper the lands slope, the higher TSS.","PeriodicalId":33667,"journal":{"name":"Semesta Teknika","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42302433","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: 0

Pemanfaatan Fly Ash dan Alkali Resistant Glass Fibre (ARG) dalam Pembuatan Paving Block 粉煤灰和耐碱玻璃纤维在铺路砖中的应用

Semesta Teknika Pub Date : 2018-08-28 DOI: 10.18196/st.v16i2.4919

Bagus Soebandono

引用次数: 0

Aplikasi Sistem Manajemen Mutu ISO 9001:2008 untuk Menganalisis Kinerja Pabrik Readymix Concrete ISO 9001:2008预拌混凝土工厂工程师分析相互管理体系应用

Semesta Teknika Pub Date : 2018-08-28 DOI: 10.18196/st.v16i2.4901

Sholaekhah Ambar Utami, Mandiyo Priyo

{"title":"Aplikasi Sistem Manajemen Mutu ISO 9001:2008 untuk Menganalisis Kinerja Pabrik Readymix Concrete","authors":"Sholaekhah Ambar Utami, Mandiyo Priyo","doi":"10.18196/st.v16i2.4901","DOIUrl":"https://doi.org/10.18196/st.v16i2.4901","url":null,"abstract":"ISO 9001:2008 define the requirements and recommendation for design and valuation of the quality management system to ensure that the corporation provides the products (goods/services) that meet the needs and also to increase the productivity efficiently. This study aimed to analyse the corporation performance in quantitative and qualitative, to discover the impact and the application of quality management system based on ISO 9001:2008 in PT. Jaya Ready Mix. The method used in this research was descriptive method and data were collected by field observation, interview with staff in technical and quality department. The secondary data also obtained from the record of the corporation. The results show that qualitative and quantitative measurement presented improved performance. It means that both show the parallel trend. Thus it can be concluded that application of quality management system ISO-9001-2008 by PT Jaya Readymix are already in the right condition. The impact of this application was the increasing of quality continuously such as the procedure for saving records, work instruction and controlling in fabrication for ready-mix concrete and also the documents for quality manual, business practices, operating procedures, standards, descriptive information and quality record.","PeriodicalId":33667,"journal":{"name":"Semesta Teknika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47844748","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: 0

Pengaruh Faktor Air Semen terhadap Kuat Tekan Beton dengan Agregat Batu Apung 精液水分因子调节剂与Apung石骨料Beton压力的关系

Semesta Teknika Pub Date : 2018-08-28 DOI: 10.18196/st.v16i2.4921

A. Pujiono, D. Riyanto, As’at Pujianto, Bagus Soebandono

{"title":"Pengaruh Faktor Air Semen terhadap Kuat Tekan Beton dengan Agregat Batu Apung","authors":"A. Pujiono, D. Riyanto, As’at Pujianto, Bagus Soebandono","doi":"10.18196/st.v16i2.4921","DOIUrl":"https://doi.org/10.18196/st.v16i2.4921","url":null,"abstract":"Lightweight concrete is concrete that has a unit weight less than 1800 kg/m3. Pumice can be used to make lightweight concrete as the replacement of coarse aggregate in concrete mixtures. This research aimed to discover the compressive strength of lightweight concrete with water-cement ratio and the impact of the unit weight of the concrete. This research was divided into two types of method. Firstly, the concrete was produced with the water-cement ratio of 0.30, 0.32, 0.34, and 0.36 and additional superplasticiser 2% for each variation. Secondly, the concrete was created with water-cement ratio 0.36, 0.38, 0.40 and 0.42 without admixture. Samples were tested for compressive strength after 28 days and calculated the unit weight of the concrete with pumice as the replacement of coarse aggregate. The results of this study indicated that for the first method, the maximum compressive strength value of lightweight concrete with pumice and additional superplasticiser was 11.2880 MPa with water-cement factor 0.30 and unit weight 1691.59 kg/m3. While for the second experiment, results show that the maximum compressive strength of lightweight concrete with pumice without admixture reached at 10.4620 MPa with a water-cement ratio at 0.38 and unit weight 1692.74 kg/m3.","PeriodicalId":33667,"journal":{"name":"Semesta Teknika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44178948","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: 0

Pengaruh Campuran Abu Sekam Padi terhadap Kuat Tekan Paving Block

Semesta Teknika Pub Date : 2018-08-28 DOI: 10.18196/st.v16i2.4899

Budi Waluyo, As’at Pujianto, Bagus Soebandono

{"title":"Pengaruh Campuran Abu Sekam Padi terhadap Kuat Tekan Paving Block","authors":"Budi Waluyo, As’at Pujianto, Bagus Soebandono","doi":"10.18196/st.v16i2.4899","DOIUrl":"https://doi.org/10.18196/st.v16i2.4899","url":null,"abstract":"Rice husk is an abundant by-product of rice milling results, and so far only used as a fuel for combustion red stones, burning for cooking or thrown away. Rice husk ash (RHA) is a waste material of rice that has special properties. This material also contains chemical compounds that can be pozzolan, which contains silica (SiO2), a compound which, when mixed with cement and water can be used to enhance the compressive strength and tensile strength of concrete while silica is a chemical compound that is dominant in the rice husk ash. This study aimed to compare the results of the average compressive strength of the normal paving block with the added ingredient of rice husk ash, assess the effect of the addition of rice husk ash to the compressive strength and prices comparison between the paving block and normal paving block with the added ingredient of rice husk ash. In this study, rice husk ash serves as a replacement for cement additives with a variation of 0%, 30%, 35% and 40% by weight of cement in comparison 1pc: 10ps, 1pc: 13ps and 1pc: 15ps. The results showed that the paving blocks with a mixture of rice husk ash in comparison 1pc: 10ps produce optimum compressive strength with a mixture of rice husk ash 16.6% in the amount of 32.709 MPa. Furthermore in comparison 1pc: 13ps, paving block compressive strength values obtained with the optimal mix of rice husk ash rice 13.0% amounting to 23.709 MPa. Finally, in comparison 1pc: 15ps, paving block compressive strength values obtained with the optimal mix of rice husk ash 15.0% amounting to 17.260 MPa.","PeriodicalId":33667,"journal":{"name":"Semesta Teknika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43670314","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

Aplikasi Value Engineering dengan Metode“Paired Comparison” pada Struktur Pelat Beton 配对比较法在混凝土板结构中的价值工程应用

Semesta Teknika Pub Date : 2018-08-28 DOI: 10.18196/st.v16i2.4910

Budi Sutrisno, Mandiyo Priyo

{"title":"Aplikasi Value Engineering dengan Metode“Paired Comparison” pada Struktur Pelat Beton","authors":"Budi Sutrisno, Mandiyo Priyo","doi":"10.18196/st.v16i2.4910","DOIUrl":"https://doi.org/10.18196/st.v16i2.4910","url":null,"abstract":"This research studied the application of value engineering with a paired comparison method with the case study in Tourism Building of Sleman Regency, Special Region of Yogyakarta. Several steps need to be carried out which consisted of information, creativity, a paired comparison method analysis, development and recommendation for the new design of a concrete plate. The concrete plate was redesigned using 2 alternatives. The first alternative was reducing the thickness of the plate from 12 cm to 10 cm without changing the concrete quality. The second alternative was using precast concrete. The result shows that the first alternative will save project budget to Rp. 10,569,562.-. Moreover, by using precast, the budget for the project will be increased by Rp.4,208,058.-. According to the paired comparison method and alternative comparison evaluation matrix, the second alternative has the highest percentage (59%), while first alternative and current condition only have 25% and 16% respectively. The second alternative was chosen to be applied to replace the existing design since it will gain more profit than any other which were included concrete quality, time, controlling, weather and human resources.","PeriodicalId":33667,"journal":{"name":"Semesta Teknika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44698123","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

Evaluasi Tebal Lapis Tambah Perkerasan Lentur Menggunakan Metode Bina Marga (Pd T-05-2005-B) dan Asphalt Institute (MS-17) (Studi Kasus Jalan Yogyakarta- Bantul) 使用Marga施工方法（Pd T-05-2005-B）和沥青研究所（MS-17）（日惹道路案例研究-帮助）对层脂肪评估额外的大斋节暴力

Semesta Teknika Pub Date : 2018-08-28 DOI: 10.18196/st.v16i2.4909

I. Haris, Anita Rahmawati

{"title":"Evaluasi Tebal Lapis Tambah Perkerasan Lentur Menggunakan Metode Bina Marga (Pd T-05-2005-B) dan Asphalt Institute (MS-17) (Studi Kasus Jalan Yogyakarta- Bantul)","authors":"I. Haris, Anita Rahmawati","doi":"10.18196/st.v16i2.4909","DOIUrl":"https://doi.org/10.18196/st.v16i2.4909","url":null,"abstract":"The overlay is the addition of pavement layer thickness which is placed on the existing pavement construction to increase the strength and to serve the planned traffic during the specified period. This research is a case study conducted in Yogyakarta-Batas Kota Bantul road using Bina Marga and Asphalt Institute method. Although a new highway is upgraded, it is possible that the road construction will be damaged in a relatively short time. With this consideration, it is necessary to evaluate the thickness of pavement overlay. The length of the evaluated road segment was divided into three (3) sections, namely Segment I (Sta 4+000 - Sta 5+800), Segment II (Sta 6+000 - Sta 7+800) and Segment III (Sta 8+000 - Sta 10+320) to get the pavement thickness uniformity level. Based on the results of the analysis with the Bina Marga method (Pd T-05-2005-B), the thickness of the layers was added for segment I (6.942 cm), segment II (6.618 cm), and segment III (6.055 cm). While in the calculation using Asphalt Institute (MS-17) method, it was obtained that there was additional layer thickness 3.556 cm in segment I, 3.048 cm in segment II, and 2.790 cm segment III. The result of overlay thickness correction of Bina Marga method using AASHTO equivalent shows the number of 2.794 cm segment I, 2.470 cm in segment II, and 1.907 cm in segment III.","PeriodicalId":33667,"journal":{"name":"Semesta Teknika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42989918","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: 0

Analisis Kelayakan Aspek Ekonomi dan Kapasitas Biodigester Model Fix Dome Plant (Studi Kasus Biodigester di Botokenceng, Yogyakarta) 经济方面的分析和生物消化器容量模型固定圆顶工厂（博托肯森生物消化器案例研究，日惹）

Semesta Teknika Pub Date : 2018-08-28 DOI: 10.18196/st.v16i2.4894

F. Monica

{"title":"Analisis Kelayakan Aspek Ekonomi dan Kapasitas Biodigester Model Fix Dome Plant (Studi Kasus Biodigester di Botokenceng, Yogyakarta)","authors":"F. Monica","doi":"10.18196/st.v16i2.4894","DOIUrl":"https://doi.org/10.18196/st.v16i2.4894","url":null,"abstract":"Beside faeces and urine from cattle’s digestion, ruminants produce highly enough methane gas (CH4). This Methane Gas is one of the gases that influence the global warming and ozone decay, with rate 1% per year and still increasing. Biogas reactor is one of the solutions to solve those problems. This research aims to find out the capacity and economic feasibility of biodigester model Fix Dome Plant located in Botokenceng, Banguntapan, Yogyakarta. Primary data which are measurements and documentation, as well as the sketch (AutoCAD) and budget plan as secondary data, were analysed in this study. The formulas to obtain the capacity of biodigester are the equation of cow’s faeces volume and faeces' solvent volume. Meanwhile, Benefit Cost Ratio (B/C) and Break Even Point (BEP) were used for economic analysis. The results of this study show that the average debit was 140.7 litres/day, with average speed for different height of flume was 4.0225 m/day. Furthermore, the operational debit was 84.4 litres/minute, with average speed for varying height of flume was 2.36 m/minute. Biodigester capacity based on digester size was 4.22 m3 which can contain faeces from 2.67 cows so that the volume needed for the biodigester was 6.33 m3 since there are four cows. According to the budget plan, the investment to build the biodigester was Rp 12,821,354.50.-. The budget earned from 4 cows was Rp 6,532,165.-/year, while the expenses were Rp 1,466,160.-/year. The result of B/C analysis was 4.45 (B/C 1), and BEP analysis occurred at the 7th year with total income was Rp 37,925,750.-.","PeriodicalId":33667,"journal":{"name":"Semesta Teknika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46842029","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: 0