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INDONESIA
Jurnal Jalan Jembatan
Published by Pusat Penelitian dan Pengembangan Jalan dan Jembatan
ISSN : 19070284     EISSN : 25278681     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Engineering Transportation
Jurnal Jalan-Jembatan adalah wadah informasi bidang Jalan dan Jembatan berupa hasil penelitian, studi kepustakaan maupun tulisan ilmiah terkait yang meliputi Bidang Bahan dan Perkerasan Jalan, Geoteknik Jalan, Transportasi dan Teknik Lalu-Lintas serta Lingkungan Jalan, Jembatan dan Bangunan Pelengkap Jalan. Terbit pertama kali tahun 1984, dengan frekuensi terbit tiga kali setahun pada bulan April, Agustus, dan Desember. Mulai tahun 2016 terbit dengan frekuensi dua kali setahun, edisi Januari - Juni dan edisi Juli - Desember, dalam versi cetak dan versi elektronik.
Arjuna Subject : -
Articles 6 Documents
 1 
Search results for , issue "Vol 39 No 1 (2022)" : 6 Documents clear
ALTERNATIF PERENCANAAN KOMPOSISI CAMPURAN BETON DENGAN GABUNGAN BAHAN TAMBAH KIMIA TIPE F DAN D AGAR WAKTU BUKA ACUAN DIPERCEPAT
Jurnal Jalan-Jembatan Vol 39 No 1 (2022)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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Abstract

The demand for an acceleration of project completion time is often an obstacle, especially in structural work which is a critical path. The length of time for concrete curing and formwork dismantling sometimes obstructs the progress of the project. The time required for casting, concrete curing and unloading of formwork in a long span bridge construction project is ± 14 days with a record that there are no obstacles in the field. Based on these problems, researchers are trying to provide an alternative solution through a compressive strength test with a variant of the concrete quality and the curing time using chemical additives type F and type D. The study aims to find the minimum concrete compressive strength, the curing time, and the effects of adding a chemical additive that refers to General Specifications Standard 2018 (70% of the designed concrete compressive strength). The variant of the concrete quality is 40 MPa, 50 Mpa, and 60 Mpa while the variant of the curing time is 1,2,3,7, and 28 days. Based on the study, the minimum concrete compressive strength for each concrete quality is 28,58 MPa, 36,85 MPa, and 46,25 MPa. The curing time needed for fc’ 40 MPa and fc’ 50 Mpa is 2 days while for fc’ 60 MPa is 3 days. The use of chemical additives also has an impact on increasing compressive strength. The maximum compressive strength value of 28 days is found in the variation of f'c 60 Mpa of 62.20 Mpa with additive content of type F dan D of 0.6% and 0,15% of the cement weight. Optimum compressive strength is achieved when the curing process is done using the soaking method. Key words: critical path, formwork, chemical additives, compressive strength, soaking method.
ANALISIS DESAIN PENINGKATAN JALAN DI ATAS TANAH LUNAK MENGGUNAKAN CERUCUK KAYU GALAM DAN MINIPILE
Jurnal Jalan-Jembatan Vol 39 No 1 (2022)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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Abstract

The road improvement of Sp.3 Janas (National Road) to STI along 2.5 km (Sta. 0+000 – Sta. 2+450) is carried out to support the development of the Belanti Food Estate area. The road has been built with a width of 3.5 m with single layer asphalt pavement and will be increased to 6.0 m wide and 3.8 m wide road shoulders (right-left). In the existing plan, the soil layer under the widening of the road will be installed with galam woodpiles as subgrade reinforcement. The need for large quantities of galam wood as subgrade reinforcement for road improvement is feared to have a negative impact on the environment, especially illegal logging. Therefore, minipile concrete pillars are an alternative for subgrade reinforcement used to prevent environmental damage due to the use of large amounts of galam wood. An analysis of the stability of the embankment and subgrade settlement was carried out by using the two subgrade reinforcements which were then compared in terms of strength to withstand loads and their cost requirements. The improvement of the Sp.3 Janas road (National Road) to STI along 2.5 km (Sta. 0+000 – Sta. 2+450) will cost Rp. 1,078,000,000,- for the use of galam wood and Rp. 31,752,000,000,- for the use of minipile concrete pillars. The total subsidence of 11.0 m of soil (depth -1.0 to -12.0 m) was 17.3 cm with a difference of 6.6 cm on the side of the road widening using galam woodpiles. If using minipile concrete piles, the total subsidence of the soil layer will be 13.3 cm with the difference in settlement on the widening side of the road using minipile concrete poles of 7.0 cm. Keywords: soft soil, galam wood, woodpile, minipile, road widening
PENGARUH UMUR BETON PADA PENGUJIAN INTEGRITAS FONDASI TIANG BOR
Jurnal Jalan-Jembatan Vol 39 No 1 (2022)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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Abstract

Integrity testing on deep foundations,better known as its trademark PIT, is one of the tests that aims to determine the integrity of the foundation. Integrity can be in the form of the length of the pile and the enlargement and/or downsizing of the pile foundation. There is no standard that regulates the minimum age of concrete when the integrity test is carried out, but it is often carried out after the age of 28 days of concrete with a wave propagation value of Ws=3,800 m/s and there is no correction value if the test is carried out at a concrete age fewer than 28 days. The research was conducted to test the integrity using PIT on the bored pile in the Bromo area, where the age of the concrete when tested was 1 and 11 days. Based on the results of the study, it was found that there was a difference in the displacement of the concrete enlargement of 11.5% on the tested bored pile. However, with reference to that the PIT integrity test is a quality test, not quantity test, so that the effect of concrete age on integrity testing, especially using PIT, can be ignored. Key words: integrity test, deep foundation, bored pile, concrate age, deep foundation, wave speed.
ANALISIS KESTABILAN LERENG PADA BATUAN LAPUK MENGGUNAKAN KRITERIA KERUNTUHAN GENERALIZED HOEK-BROWN DAN MOHR-COULOMB EKUIVALEN
Jurnal Jalan-Jembatan Vol 39 No 1 (2022)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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Abstract

In the soil failure model, the strength of soil masses is controlled by the friction of grains, as analogous to the strength of intact rock in the rock mass failure. Discontinuity strength is obviously not considered in the soil failure criterion. Slopes of weathered rock masses analyzed in this paper were located on the two cut slopes of highway construction on the southern coast of East Java, Serang Beach – Malang Regency Section. The rock mechanic approach was applied by using a non-linear failure criterion of generalized Hoek-Brown. This criterion was correlated to the linear failure criterion of Mohr-Coulomb which was common in a slope stability analysis practice. Analysis using generalized Hoek-Brown was always generating critical factor of safety (FS), compared to the Mohr-Coulomb equivalent with FS difference of 50.5% and 16.03% at the STA. 16+350 and STA. +14+125 respectively. Critical slip surfaces produced by generalized Hoek-Brown were always laying on the shallower area, compared to the Mohr-Coulomb critical slip surfaces. Keywords: weathered rock slope, generalized hoek-brown, equivalent mohr-coulomb, geological strength index, southern coast java road.
KINERJA DINAMIK JEMBATAN RANGKA BAJA YANG MENERAPKAN LEAD RUBBER BEARING (LRB)
Jurnal Jalan-Jembatan Vol 39 No 1 (2022)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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Abstract

The application of LRB technology on bridges in Indonesia is not as popular as in developed countries, even though Indonesia is one of the countries with the highest frequency of earthquake occurrences. LRB technology is more popular in its application to building structures. However, LRB technology has been widely applied to road and bridge infrastructure, especially on toll roads. Even Indonesia has been able to produce LRB with better quality and quantity compared to other countries. This study aims to determine the performance improvement of bridges using LRB in accommodating earthquake forces. This study examines the results of bridge monitoring by replacing the placement system in the form of bearing pads with LRB. Installation of LRB is carried out on a steel frame bridge with a length of 65 meters. This load test is carried out with 4 (four) methods of loading a 6 (six)-wheel truck load. Installation of 4 accelerometer sensors (two vertical bridge directions and two bridge transverse directions) installed in the middle of the span. In addition to the installation of the accelerometer, LVDT was installed in the longitudinal direction of the bridge. Based on the results of the analysis, it is found that the natural frequency value of the upper structure the bridge does not change (that is, 4.64 Hz). There was an increase in the performance of the bridge bearing system, especially the damping time from 7.36 seconds to 4.01 seconds with the same magnitude value. Keywords: steel truss bridge, LRB, cencor, frequency, damping.
ANALISIS ENERGI KINETIK MAKSIMUM JATUHAN BATUAN (ROCK FALL) DALAM PENERAPAN TEKNOLOGI ROCK FENCE
Jurnal Jalan-Jembatan Vol 39 No 1 (2022)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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Abstract

Rock fall is a very fast bedrock movement where material is released from a steep slope and moves by falling, bouncing, rolling or sliding. West Java Province has a frequency of 1129 landslides throughout 2020 which underlies the need for a study of locations that have the potential for rock fall and simulation calculations to determine the type of rock fall barrier that can be used at that location. Rock fence as a passive slope protection method as one of the rock fall countermeasures. The analysis is carried out using software to determine the most appropriate type of rock fence method. Based on the analysis, the maximum kinetic energy at Location 1, Location 2 and Location 3 was 1,630.68 kJ, 1,209.11 kJ and 397.82 kJ, respectively. Thus, the countermeasure for Location 1 can use a Category 4 rock fence with the maximum energy level value being in the range of 1500 kJ MEL < 2000 kJ, while countermeasures for Locations 2 and 3 can use Category 3 and Category 1 rock fences respectively. Further collection of slope geometry data and historical rock fall data is needed to be able to simulate various rock fall conditions, rock reflection heights and rock maximum kinetic energy so as to sharpen the analysis results. Keywords: rock fence, rock fall classification, kinetic energy, slope protection, simulation

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