Model Korelasi Empiris antara Paramater Evd, CBR dan Kepadatan Tanah untuk Estimasi Kuat Dukung Tanah Dasar
DOI:
https://doi.org/10.23960/rekrjits.v30i2.152Kata Kunci:
LWD, CBR, Kepadatan Tanah Subgrade, korelasi empiris, kuat dukung tanahAbstrak
Evaluasi kuat dukung tanah dasar (subgrade) merupakan aspek krusial dalam perencanaan dan konstruksi infrastruktur jalan. Metode konvensional seperti California Bearing Ratio (CBR) dan pengujian kepadatan tanah seringkali memerlukan waktu yang relatif lama dan bersifat destruktif. Penggunaan Light Weight Deflectometer (LWD) menawarkan alternatif pengujian non-destruktif yang cepat dan efisien. Namun, korelasi antara nilai modulus elastisitas dari LWD (Evd), nilai CBR lapangan, dan kepadatan tanah masih memerlukan pengembangan lebih lanjut untuk kondisi tanah lokal.
Penelitian ini bertujuan untuk mengembangkan model korelasi empiris antara Evd (LWD), CBR lapagan, dan kepadatan tanah untuk estimasi kuat dukung tanah dasar. Pengujian dilakukan pada beberapa lokasi proyek jalan dengan variasi jenis tanah dan tingkat kepadatan. Analisis regresi linier dan nonlinier digunakan untuk memperoleh model korelasi terbaik.
Hasil penelitian menunjukkan bahwa terdapat hubungan kuat antara Evd dan CBR dengan koefisien determinasi (R²) mencapai >0.85 pada model terbaik. Kepadatan tanah juga menunjukkan kontribusi signifikan terhadap peningkatan nilai Evd dan CBR. Model empiris yang dihasilkan dapat digunakan sebagai pendekatan praktis dalam evaluasi cepat kuat dukung tanah dasar.
Unduhan
Referensi
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