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All Journal Jurnal HPJI (Himpunan Pengembangan Jalan Indonesia) Jurnal Jalan Jembatan
N. Retno Setiati
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Civil Engineering, Building, Construction & Architecture

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KEKUATAN STRUKTUR JEMBATAN GANTUNG SEDERHANA UNTUK PEJALAN KAKI N. Retno Setiati; Panji Krisna Wardhana; Almuhitsyah .; Halisa .
Jurnal HPJI (Himpunan Pengembangan Jalan Indonesia) Vol. 1 No. 2 (2015)
Publisher : Himpunan Pengembangan Jalan Indonesia (HPJI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26593/jh.v1i2.1470.%p

Abstract

Abstract The bridge is one of the transport infrastructure needed to support social and economic activities. The bridge is really needed in some parts of rural communities. One phenomenon that often happens in the community is the unavailability of the bridge that can connect one village to another so that economic activity becomes inhibited. This condition required a simple bridge which can be utilized by people. This study deals with the design process of a simple suspension bridge reserved for pedestrians. Loading used refers to the guideline standards, taking into account the wind load and the vibration frequency. The results obtained show that the design can be used by pedestrians and two-wheeled vehicles, although it required review of the effect of vibration due to two-wheeled vehicles on the bridge. Keywords: suspension bridge, pedestrians, wind force, vibration frequency  Abstrak Jembatan merupakan salah satu prasarana transportasi yang dibutuhkan dalam menunjang kegiatan sosial ekonomi. Jembatan sangat dibutuhkan masyarakat di beberapa pelosok perdesaan. Salah satu fenomena yang sering terjadi di masyarakat adalah tidak tersedianya jembatan yang dapat menghubungkan antara suatu desa dengan desa lainnya sehingga kegiatan perekonomian menjadi terhambat. Untuk itu diperlukan suatu jembatan sederhana yang dapat dimanfaatkan masyarakat. Pada studi ini dirancang suatu jembatan gantung sederhana yang diperuntukkan bagi pejalan kaki. Pembebanan yang digunakan mengacu kepada standar pedoman yang baku, dengan memperhatikan beban angin dan frekuensi getar beban yang bekerja. Hasil yang didapat menunjukkan bahwa rancangan yang diperoleh dapat digunakan oleh pejalan kaki dan kendaraan beroda dua, walaupun diperlukan kajian terhadap pengaruh getaran akibat kendaraan beroda dua terhadap jembatan. Kata-kata kunci: jembatan gantung, pejalan kaki, beban angin, frekuensi getar
PENGARUH PENAMBAHAN NANO MATERIAL TERHADAP SIFAT MEKANIK DAN DURABILITAS BETON (THE EFFECT OF NANO MATERIAL ADDITION ON MECHANICAL PROPERTIES AND DURABILITY OF CONCRETE) N. Retno Setiati
Jurnal Jalan-Jembatan Vol 33 No 2 (2016)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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Abstract

Abstrak Perkembangan teknologi beton di bidang konstruksi jembatan mengalami peningkatan yang cukup pesat. Salah satu upaya untuk membuat beton dengan kekuatan dan durabilitas tinggi adalah dengan penambahan material berukuran nanometer.  Tujuan dari tulisan ini ialah untuk mendapatkan sifat mekanik dan durabilitas beton yang ditambah dengan nanomaterial.  Material untuk beton yang digunakan terdiri dari pasir silika, semen, nanosilika, superplasticizer, dan air.  Benda uji beton berupa silinder dengan diameter 100mm dan tinggi 200mm.  Metodologi yang digunakan ialah experimental di laborataorium dengan membandingkan sifat mekanik dan durabilitas beton yang tanpa dan ditambah nano material.  Dari hasil analisis dan pembahasan diperoleh bahwa komposisi optimum dari nanosilika yang dapat ditambahkan ke dalam campuran beton adalah 5% dari berat binder, sehingga mengurangi penggunaan semen 30 kg.  Komposisi optimum beton dengan penambahan nanosilika (beton nano) meningkatkan kuat tekan 16,70 %. Berdasarkan hasil uji durabilitasbeton nano memiliki tingkat permeabilitas sangat baik dibandingkan beton konvensional dengan nilai rata rata kurang dari 0,01x10-16, sedangkan beton konvensional nilai rata-rata nya  adalah 0,023x10-16, dan termasuk dalam kelas kualitas baik.  Hasil uji RCPT memberikan nilai charge passed (Q) untuk beton nano 49,47 % lebih kecil dibandingkan beton konvensional, yang berarti ketahanan terhadap klorida beton nano lebih baik dari beton konvensional.   Harga beton nano ini 5 sampai 7 kali lebih mahal dari beton konvensional, akan tetapi dengan durabilitas yang sangat baik beton nano tersebut dapat mengurangi biaya perawatan dan perbaikan selama umur layan.   Kata kunci:  beton, nanosilika, kuat tekan, durabilitas, permeabilitas, ketahanan klorida.  ABSTRACTDevelopment of concrete technology in bridge construction is rapidly increasing.  The  addition of material in nanometer size is an effort to make high strength and durability concrete.  This study aims to obtain the mechanical properties and durability of concrete added by nanomaterial. The materials used for concrete consisted of  silica sand, cement, nanosilica, superplasticizer, and water.  The test specimens of concrete are  in the form of  cylinders with a diameter of 100 mm and a height of 200 mm. The methodology used for testing is laboratory experiment by comparing concrete mechanical properties and durability with and without nano materials. Based on the analysis and discussion indicated   that the optimum composition of nanosilica that can be added into concrete mix is 5% of binder weight so that it can reduce the use of cement to 30 kg.  The optimum composition of concrete added by nonsilica (nano concrete) increases the  compressive strength  by 16,70%. based on concrete  durability test showed that nano concrete has excellent permeability rate compared to  conventional concrete with the average value of less than 0,01x10-16, while  the average value of conventional concrete is 0,023x10-16  and classified as good quality.  Based on RCPT tests give value passed charge (Q) of 49,47%  for nano concrete  smaller than the conventional one,   it means   that the resistance to chloride attack is better than conventional concrete. The price of nano concrete is 5-7 times more expensive than conventional concrete, however, with high excellent  durability  of nano concrete can reduce the cost of  maintenance and repair over the service life. Keywords:  concrete, nanosilica, compressive strength, durability, permeability, chloride resistance
KAJIAN PERENCANAAN JEMBATAN INTEGRAL N. Retno Setiati
Jurnal Jalan-Jembatan Vol 27 No 2 (2010)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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Abstract

Integral bridge is made without existence of movement between spans or between spans with abutment. The road surface is continuously made by the approach embankment. The integral bridge type avoids the problem of maintenance for joins and bearings, in particular if water and dust penetrates through the joints and also effect the bearings, can made safe for road users and simple applicative method. Bridge integral system consist of full integral and semi integral. Integral bridge with spans less than 20 metre to the condition in Indonesia most aptimum use reinforced concrete type with system of full integral, while if more than 20 metre more suggested to user type of prestress with semi integral system. This study explaining about development of integral bridge technology for the type of concrete structure. like calculation method, encumbering paramter and also of desain with simulation model bridge user program analyse structure. For example made integral bridge model for the type of reinforced concrete with single span. Result of study of full integral most is optimum made to spans until 20 m. Keywords : full integral, semi integral, reinforced concrete, maintenance, expansion joint
PENGARUH PENAMBAHAN SERAT SINTETIK PLASTIK TERHADAP KEKUATAN TEKAN DAN LENTUR BETON N. Retno Setiati
Jurnal Jalan-Jembatan Vol 27 No 3 (2010)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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Abstract

The use of additional materials to improve concrete performance has rapidly developed, such as synthentic fiber of plastic which commonly used for concrete structure. The use of such material in concrete is expected to be able to increase concrete strength. The purpose of the research is to find out the optimum composition and the effectiveness of plastic fiber in concrete performance. Laboratory tests has been conducted. Based on analysis result showed that at the age of 28 days, the compressive strength with composition of 4 kg/m3 (39,228 N/m3) is 2,6% greater than normal concrete and flexural strength increased 1,6% to normal concrete. Key words : synthetic fibre, composition, compressive strength, flexural strength, fibre concrete
EVALUASI PENILAIAN KAPASITAS SISA JEMBATAN LAWANG TADJI N. Retno Setiati; Setyo Hardono
Jurnal Jalan-Jembatan Vol 23 No 2 (2006)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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Abstract

Bridge is transportation infrastructure and connection of some areas, either in land, sea, river, or mountain have to fulfill planning criteria. Among bridge planning criteria a i.e. standard of strength, inertia, stability, security, and ride ability. Assessment of bridge residual value or capacities are very important in a scheme of repair and bridge rehabilitation, or whether a bridge is properly used or not. The girder of bridge in general one with slab of bridge. Therefore, the approach used to calculate capacities of cross section is T girder. Capacity of T girder is evaluated with ultimate strength concept. This theory has proven through experiment by many experts, and close to actual condition.
ESTIMASI KETIDAKPASTIAN PENGUKURAN DALAM PENGUJIAN KUAT TEKAN BETON N. Retno Setiati
Jurnal Jalan-Jembatan Vol 23 No 3 (2006)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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Abstract

Compliance testing sometimes involves measured values, which lie close to the zone of uncertainty. A different method of uncertainty evaluation by foreign authority could mean rejection of a container of goods destined for import because of expansion of the recalculated zone of uncertainty. In the era of global marketplace it is imperative that the method for evaluating and expressing uncertainty be uniform throughout the world so that measurements performed in different countries can be easily compared. This study gives the recommended method for evaluating me asurement uncertainty that is applicable for calibration and testing laboratories which based on SNI-19-17025-2000. The method of evaluating measurement uncertainty described in this studies in accordance with ISO “Guide to the Expression of Uncertainty in Measurement”.
Kajian Perbandingan Bantalan Elastomer Sebagai Perletakan Jembatan dengan Menggunakan 4 Lapisan dan 3 Lapisan Pelat Baja N. Retno Setiati; Rully Ranastra Irawan
Jurnal Jalan-Jembatan Vol 22 No 2 (2005)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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Abstract

In generally bridge bearing in Indonesia is made from metal, in the case of quality of materials and also installation method often generate problems. This metal bearing pad relatively more expensive and its wight enough heavily in the case of transportation. In Indonesia, the elastomeric bridge bearing have been used. The experiments which have been done to the Experi mental Stationer of Bridge and Road Furniture, Research Technology of Rubber in Bogor, and Produser of Rubber have earned to make laminated elastomeric bridge bearings which made from natural rubber and synthetic rubber according to spesification which have been determined by Standard – Spesification like AASHTO. This spesification required to be taken care of elastomeric bridge bearings which produced do not become problems in periode to come.
Kajian Perbandingan Bantalan Elastomer Sebagai Perletakan Jembatan dengan Menggunakan 4 Lapisan dan 3 Lapisan Pelat Baja N. Retno Setiati; Rully Ranastra Irawan
Jurnal Jalan-Jembatan Vol 22 No 4 (2005)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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Abstract

In generally bridge bearing in Indonesia is made from metal, in the case of quality of materials and also installation method often generate problems. This metal bearing pad relatively more expensive and its wight enough heavily in the case of transportation. In Indonesia, the elastomeric bridge bearing have been used. The experiments which have been done to the Experi mental Stationer of Bridge and Road Furniture, Research Technology of Rubber in Bogor, and Produser of Rubber have earned to make laminated elastomeric bridge bearings which made from natural rubber and synthetic rubber according to spesification which have been determined by Standard – Spesification like AASHTO. This spesification required to be taken care of elastomeric bridge bearings which produced do not become problems in periode to come.
PERBANDINGAN SIFAT DAN KARAKTERISTIK BETON GEOPOLIMER TERHADAP BETON SEMEN PORTLAND UNTUK KEKUATAN STRUKTUR BALOK (COMPARISON OF THE PROPERTIES AND CHARACTERISTICS OF GEOPOLYMER CONCRETE AND PORTLAND CEMENT CONCRETE FOR STRUCTURAL BEAM STRENGTH) N. Retno Setiati; Rulli Ranastra Irawan
Jurnal Jalan-Jembatan Vol 35 No 2 (2018)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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Abstract

Fly ash is a coal combustion product from several power plants. Currently, F type fly ash is commonly used for concrete mixes. This study discusses the effect of 100% addition of fly ash on concrete mixes. In this study cement is substituted with fly ash. Laboratory testing is performed by making a physical model in the form of reinforced concrete beams. Test results were compared between geopolymer concrete and conventional concrete. To determine the mechanical properties of concrete, the specimen was made in a cylindrical shape measuring 150 mm x 300 mm and a beam measuring 150 mm x 150 mm x 600 mm. To determine the structural capacity of geopolymer and conventional concrete, two structural beams measuring 150 mm x 350 mm with a length of 4000 mm were made. The testing of structural beams was undertaken according to the ACI 437.1R-07. Then, the laboratory test results are compared to the theoretical analysis. Based on the results it was found that beams strength made of geopolymer concrete is almost equivalent to the conventional concrete. Based on the test results, the load capacity of the geopolymer concrete beam structure of 87.5 kN with a deviation of 38% for theoretical analysis. For conventional concrete, the load capacity is 109.2 kN with a deviation of 25% compared to theoretical analysis. In addition, the structural capacity value of geopolymer and conventional concrete beams based on the results of laboratory tests is smaller than the results of theoretical analysis. Keywords: Portland cement, fly ash, conventional concrete, geopolymer concrete, reinforced concrete beam
ANALISIS PENANGANAN DAMPAK BAHAYA GERUSAN ALIRAN SUNGAI PADA STRUKTUR PILAR JEMBATAN N. Retno Setiati; Ireng Guntorojati; Elis Kurniawati
Jurnal Jalan-Jembatan Vol 36 No 1 (2019)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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Abstract

Pier is part of the bridge structure which is vulnerable to the scouring hazard. The scour process on the pier can cause bridge failure and thus disturb its surrounding accessibility. This study aim to determine the potential hazard of river flow scour that occur in the Cipamingkis bridge in Bogor regency for several return periods. Cipamingkis bridge already been strenghthen by the replacement of two span of girder with one span of truss system with addition of pier dimension. Analysis to determine the potential of scouring was carried out using the HEC-RAS program. Modeling was made for two conditions, river flow condition before the bridge collapsed and after the bridge was repaired. Several parameters used in the analysis of scour potential consist of pier shape, water flow, water velocity, riverbed conditions, and riverbed material are take into account. The analysis results obtained from the HEC-RAS program are then compared with some empirical methods such as Lauren and Toch, Froehlich, and CSU. Scour depth based on the CSU method gives the greatest results compared to other methods. The results of empirical calculations using the CSU method give a scour depth of 5,64 m for a 100 year return period. This value can be used in the preliminary design of bridge pier as it gives the most conservative results. Nevertheless to obtain the more accurate results, this value need to be compared with the field measurement results. Keywords: scour, pier, HEC-RAS, bridge, river flow
Co-Authors Almuhitsyah . Elis Kurniawati Halisa . Ireng Guntorojati Joko Purnomo Panji Krisna Wardhana Rulli Ranastra Irawan Rully Ranastra Irawan Setyo Hardono