EVALUASI KEKUATAN TANAH DASAR BERDASARKAN UJI CALIFORNIA BEARING RATIO PADA SUATU RENCANA KAWASAN WISATA
Bilah Samping Artikel
Read Counter : 59
Download : 78
Isi Artikel Utama
Abstrak
Subgrade strength is a crucial factor in pavement design for areas subjected to static and dynamic traffic loads. This research aims to evaluate the subgrade's bearing capacity at a planned tourism area in Lembang, West Java. The evaluation was conducted using the field CBR test method in accordance with ASTM D 4429 and SNI 1738:2011. Data collection was carried out at 12 scattered areas, covering a total of 89 representative test points. The results show that the actual CBR values varied significantly with average values at each test area ranging from 4.35% to 6.45%. Although all values met the minimum design requirement (>2%), most of the subgrade conditions were classified as "Very Poor" to "Poor-Fair" and remained below the 6% threshold. This condition indicates low subgrade bearing capacity, high deformation potential, and non-uniform subgrade properties, so it is recommended to carry out soil improvement before the pavement construction stage is carried out in the planned tourism area.
Abstrak
Kekuatan tanah dasar (subgrade) merupakan faktor krusial dalam perencanaan perkerasan yang akan menanggung beban lalu lintas statis dan dinamis. Penelitian ini bertujuan untuk mengevaluasi daya dukung tanah dasar di suatu rencana kawasan wisata di Lembang, Jawa Barat. Evaluasi dilakukan menggunakan metode uji California Bearing Ratio (CBR) lapangan sesuai standar ASTM D 4429 dan SNI 1738:2011. Pengambilan data dilakukan pada 12 area yang tersebar dan mencakup total 89 titik uji representatif. Hasil penelitian menunjukkan bahwa nilai CBR lapangan tanah dasar rata-rata pada setiap area pengujian berkisar antara 4,35% hingga 6,45%. Meskipun seluruh nilai tersebut telah memenuhi syarat minimum perencanaan (>2%), mayoritas kondisi tanah dasar tergolong dalam kategori “Very Poor” hingga “Poor-Fair” dan berada di bawah ambang batas 6%. Kondisi ini mengindikasikan daya dukung tanah dasar yang rendah, potensi deformasi yang tinggi, dan sifat subgrade yang tidak seragam, sehingga direkomendasikan untuk melakukan perbaikan tanah (soil improvement) sebelum tahap konstruksi perkerasan dilakukan pada rencana kawasan wisata tersebut.
Rincian Artikel
Artikel ini berlisensiCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
This work is licensed under Jurnal Mitra Teknik Sipil (JMTS) Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Referensi
American Association of State Highway and Transportation Officials. (2004). AASHTO mechanistic-empirical pavement design guide: A manual of practice (NCHRP Report 1-37A). Transportation Research Board. https://doi.org/10.17226/22244
ASTM International. (2009). ASTM D4429 09: Standard test method for CBR (California Bearing Ratio) of soils in place. ASTM International. https://www.astm.org/d4429-09.html
Badan Standardisasi Nasional. (2011). SNI 1738:2011 – Cara uji CBR (California Bearing Ratio) lapangan. https://binamarga.pu.go.id/uploads/files/586/sni-1738-2011-cara-uji-cbr-california-bearing-ratio-lapangan.pdf
Boston, K., Patterson, J., & Inman, A. (2024). Subgrade strength recovery of fine grained soil containing roads in Western Oregon forest. Forests, 15(4), 671. https://doi.org/10.3390/f15040671
Cahyono, A. D., Mahardana, Z. B., Dewanta, R. K., Hidiyati, E. F., & Rivianto, A. (2024). Subgrade feasibility analysis for tourist access roads in Senggani Gorge, Tulungagung using laboratory CBR testing. CIVED, 11(2), 645–653. https://doi.org/10.24036/cived.v11i2.587
Chokkerd, J., Udomchai, A., Sultornsanee, S., Angkawisittpan, N., Jantosut, P., Sangiamsak, N., & Kaewhanam, N. (2024). On the prediction of the California Bearing Ratio (CBR) from the Dynamic Cone Penetrometer (DCP) for subgrade soil. Preprints.org. https://doi.org/10.20944/preprints202405.1459.v1
Febrian, An, Anisarida, A. A., & Janizar, S. (2024). Komposisi perkerasan jalan di kawasan wisata Kabupaten Cianjur. CRANE: Civil Engineering Research Journal, 5(1), 1–12. https://ojs.unikom.ac.id/index.php/crane/article/download/12708/4306
Irdhiani, & Martini. (2020). The subgrade improvement of the road construction with geotextile reinforcement on Kolaka clay. MATEC Web of Conferences, 276, 02006. https://doi.org/10.1051/matecconf/202033102006
Iowa State University. (2013). Geotechnical materials in construction. Center for Transportation Research and Education. https://www.intrans.iastate.edu/wp-content/uploads/sites/15/2020/03/6E-1.pdf
Kementerian Pekerjaan Umum dan Perumahan Rakyat. (2017). Manual Desain Perkerasan Jalan (MDP). Direktorat Jenderal Bina Marga. https://binamarga.pu.go.id/uploads/files/1475/manual-desain-perkerasan-jalan-no-04sedb2017.pdf
Laili, A. P., Hasanuddin, A., & Wicaksono, L. A. (2022). Perbandingan tebal perkerasan menggunakan nilai CBR laboratorium dan CBR lapangan (DCP) (JLS Jarit Puger). BENTANG: Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil, 10(1), 11–28. https://doi.org/10.33558/bentang.v10i1.2891
Murtedza, M. F., & Nugraha, A. S. (2024). Pengaruh fly ash dan kadar air terhadap nilai California Bearing Ratio suatu fill material. Jurnal Kacapuri: Jurnal Keilmuan Teknik Sipil, 7(2), 168. https://doi.org/10.31602/jk.v7i2.14121
Nugraha, A. S., Fahlevi, J. D., & Soentpiet, W. H. (2019). Studi pengaruh ukuran butir terhadap parameter kompaksi dan nilai CBR material crushed limestone Padalarang. Jurnal Teknik Sipil, 13(2), 160–179. https://doi.org/10.28932/jts.v13i2.1442
Sarkar, S., Biswas, S. K., & Chakraborty, S. (2023). In situ CBR enhancement with tyre scrap in subgrade. Journal of Harbin Engineering University. https://harbinengineeringjournal.com/index.php/journal/article/download/2121/1412/3499
Sarsam, S. I. (2021). Comparative assessment of deformation under plate bearing test and CBR test for subgrade soil. International Research Journal of Multidisciplinary Technovation, 3(6), 173–181. https://doi.org/10.54392/irjmt2161
Sasi, A. J., & Sai, A. J. (2017). Subgrade soil improvement using coir geotextiles and geocells. IJERT. https://www.ijert.org/research/subgrade-soil-improvement-using-coir-geotextiles-and-geocells-IJERTCONV5IS08021.pdf
Shukla, R. P., Rahim, D., Basudhar, P. K., Akhter, M. N., & Gurjar, J. (2024). Stabilization of subgrade soil using geotextiles. IGC 2024 Conference Abstracts. https://igc2024mit.com/uploads/abstract/25_StabilizationofSubgradeSoilUsingGeotextiles.pdf
Situngkir, H. P., Nugraha, A. S., & Riyadi, S. (2025). Effect of fly ash percentage on compaction parameters of a fill material. Jurnal Teknik Sipil, 21(1), 80–92. https://doi.org/10.28932/jts.v21i1.9694
Sufarman, S. I., & Sulfanita, A. (2023). Stabilisasi tanah menggunakan kapur dan abu batu pada subgrade Tugu Tunas Kelapa Parepare. Jurnal Karajata Engineering, 3(2), 96–101. https://doi.org/10.31850/karajata.v3i2.2308
Thakur, J. K., Han, J., Pokharel, S. K., & Parsons, R. L. (2012). Performance of geocell reinforced recycled asphalt pavement (RAP) bases over weak subgrade under cyclic plate loading. Geotextiles and Geomembranes, 35, 14–24. https://doi.org/10.1016/j.geotexmem.2012.06.004
Wang, Q., Zhang, J., Liu, K., Xu, A., Xu, H., Yang, M., Li, W. (2021). Study on performance tests and the application of construction waste as subgrade backfill. Materials, 14(9), 2381. https://doi.org/10.3390/ma14092381