Long Term Effects of Reduced Track Tamping Works

Tamping needs to guarantee safety in limiting geometric failures in isolated points, reduce dynamic forces by a smooth through-going longitudinal level, and provide a certain riding comfort for passengers. Although different methods are applied to describe geometry deterioration, the amount of tamping needed is seldomly addressed. In this work, we evaluated and compared different tamping regimes and their long-term consequences by extrapolating the longitudinal level of track. Forecasting beyond one tamping action needs a precise positioning of measurement data and a solid methodology. We found that tracks can be operated by repairing isolated defects for more than ten years without running into technical and operational trouble, and even reducing budgets in this period. However, the long-term perspective financially shows the contrary: continuous through-going maintenance keeps track quality at a high level and provides the basis for a long service life.

Analysis Effect Of Thick Ballast On Track Quality Index (TQI) Value Route Wonokromo – Mojokerto

In Operational Area 8 Surabaya there are several railway lines, one of which is the Wonokromo - Mojokerto line. This lane has a fairly heavy train traffic frequency including the connecting lane south. This will affect the quality of roads on the Wonokromo - Mojokerto line. To assess damage to a railroad seen from several aspects in the structure of the railroad. These aspects are the structure of the railroad, the structure of the railroad and the geometrical structure of the railroad. In Indonesian railways, the railroad uses railroad geometry consisting of several parameters (track gauge, cant, longitudinal level, and lateral level.) as a basis for assessing railroad quality. In this study will analyze the structure of the railroad under the thickness of the ballast to the Track Quality Index (TQI). In this study using a simple linear regression analysis to determine the variation of the thickness of the ballast to TQI. From the results of the analysis conducted, obtained thickness changes that occur in ballast that affect the value of the Track Quality Index (TQI). Where the greater ballast, the greater the value of TQI.

Study of Concrete Bearing Behavior for 1067 mm Track Width with Variation in Track Quality Index (TQI) Values

Penelitian ini di lakukan untuk mengetahui pengaruh ketidakstabilan geometri terhadap ketahanan struktur jalan rel yang difokuskan pada struktur atas jalan rel. Dalam mengkaji nilai penyimpangan geometri lintasan menggunakan perhitungan standar deviasi pada setiap parameter pengukuran, yang selanjutnya diolah menjadi nilai track kualitas indeks (TQI). Data parameter pengukuran di dapatkan dari kereta ukur Galunggung untuk tahun 2018 dan kereta ukur EM-120 untuk tahun 2019. Perbedaan hasil perhitungan nilai kualitas jalan rel (TQI) dengan tahun yang berbeda, dijadikan patokan untuk penentuan lokasi survey manual dengan menggunakan alat ukur matisa dan meter listring. Hasil pengukuran geometri dilapangan dimodelkan dengan program bantu perhitungan kekuatan struktural. Simulasi model dengan melakukan analisis menggunakan Finite Elemen Method (FEM) terhadap beberapa kondisi sesuai dengan kategori penyimpangan geometri (TQI). Hasil penelitian ini didapatkan bahwa, propertis material bantalan, dengan kaut tekan beton (Fc’) 54 MPa dan kuat tarik wire prestressed (Fy) 1400 MPa, tipe rel adalah R.54, serta properti balas sesuai PM.60 tahun 2012. Beban aksial yang bekerja sebesar 16.241 Kg, Dari hasil analisa pada nilai penyimpangan geometri kategori 3 (25<TQI<40), didapatkan spesimen bantalan (B4) mengalami tegangan tekan 15.566 MPa dan tegangan tarik sebesar 5.178 MPa. Analisa kondisi tersebut, material beton tidak dapat menumpu gaya tarik yang dipersyaratkan yaitu, 4.632 MPa (0.32 Fc0.67). Demikian terjadi juga, pada kondisi penyimpangan geometri kategori 4 (TQI > 40).

Improving Ballastless Track Quality Using Project Quality Management and SmartPLS

Transportation is still a significant problem in Indonesia. Indonesians prefer to use private vehicles for daily mobility purposes because public transportation lacks safety and comfort and has a longer trip duration. This issue causes congestion and air pollution problems. Hence, sustainable railbased public transportation is recommended. Light Rail Transit (LRT) tends to be congestion-free and has a relatively shorter travel time with a large passenger capacity. Most LRT track constructions use the ballastless track. However, this track construction is still new in Indonesia. The research aimed to determine the most important factors in improving ballastless track construction performance on LRT. The research referred to the existing LRT construction in Indonesia using Lean Construction (LC) and Project Quality Management (PQM) approaches. Statistical science approach with SmartPLS software was also used in data processing and modeling the relationship between variables. The research was conducted by distributing questionnaires to determine the most important factors in improving the quality of ballastless tracks with variables and indicators extracted from LC and PQM methods. From five tested hypotheses, only one hypothesis is accepted. Quality control has a positive effect on track quality. It is also found that quality control becomes the most important variable in improving ballastless track quality.

Analisis Kondisi Jalan Rel Kereta Api Pada Lintas Sragen-Solo Berdasarkan Nilai Track Quality Indeks (TQI)

One way to keep the train service flow runs safely, maintenance of railroad geometry is required. Maintenance of railroad tracks uses the Track Quality Index assessment to determine which railroad compartments or corridors are prioritized for repair. The research method used is a quantitative research method. The calculation of the TQI of railroad tracks includes force, height, spoor width and lining. The results of the calculation of the TQI value (manual) give the cumulative total number of standard deviation index is 21.6. While the TQI calculation (mechanical) total cumulative number index standard deviation is 21.2. Based on the results of the TQI calculation, the condition of the railroad tracks can be classified into the criteria for the TQI level II (standard deviation of 20 - 35), namely that the railroad can be passed by trains at speeds of 80-100 km/hour. The railroad maintenance based on the TQI is the repairs to rail compartments or corridors that experience leveling damage in segment 9, lining damage in segment 7, wide damage spoor (gauge) in segments 5,7 and 10 and elevation damage (cant) in segment 3.