Analisis potensi likuifaksi menggunakan data CPT dan SPT

DETAIL KOLEKSI

Analisis potensi likuifaksi menggunakan data CPT dan SPT

Oleh : Muchammad Fikri Alfaqikh

Info Katalog

Penerbit : FTSP - Usakti

Kota Terbit : Jakarta

Tahun Terbit : 2022

Pembimbing 1 : Ruwaida Zayadi

Subyek : Earthquakes;Soil liquefaction

Kata Kunci : liquefaction potential analysis, CPT, SPT

Status Posting : Published

Status : Lengkap

File Repositori

No.	Nama File	Hal.
1.	2022_TA_STS_051001800136_Halaman-Judul.pdf	14
2.	2022_TA_STS_051001800136_Lembar-Pengesahan.pdf
3.	2022_TA_STS_051001800136_Bab-1_Pendahuluan.pdf	3
4.	2022_TA_STS_051001800136_Bab-2_Tinjauan-Pustaka.pdf
5.	2022_TA_STS_051001800136_Bab-3-Metodologi-Penelitian.pdf
6.	2022_TA_STS_051001800136_Bab-4_Analisis-dan-Pembahasan.pdf
7.	2022_TA_STS_051001800136_Bab-5_Kesimpulan.pdf
8.	2022_TA_STS_051001800136_Daftar-Pustaka.pdf
9.	2022_TA_STS_051001800136_Lampiran.pdf

Abstrak
Abstract

I ndonesia merupakan daerah yang rawan gempa bumi, hal itu dikarenakan lokasi Indonesia yang dilalui 3 lempeng tektonik. Dari banyaknya akibat yang disebabkan oleh gempa, salah satunya yaitu likuifaksi. Likuifaksi merupakan hilangnya kekuatan lapisan tanah akibat getaran. Dalam hal ini, Binjeita menjadi lokasi tinjauan mengenai analisis potensi likuifaksi, dengan menggunakan data Cone Penetration Test (CPT) dan Standard Penetration Test (SPT). Untuk mengetahui potensi likuifaksi diperlukan nilai acuan yaitu FS (safety factor). Nilai FS ini didapatkan dengan cara membagi antara nilai Cyclic Resistance Rasio (CRR) dengan nilai Cyclic Stress Ratio (CSR). Suatu titik akan berpotensi terjadi likuifaksi jika memiliki nilai FS kurang dari 1 (satu). Hasil potensi likuifaksi berdasarkan data CPT dan SPT menunjukkan semakin besar nilai percepatan gempa (amax) dan nilai magnitude gempa (Mw) maka nilai FSnya semakin kecil. Sedangkan jika letak muka air tanahnya semakin dangkal maka nilai FSnya semakin kecil. Berdasarkan hasil perhitungan potensi likuifaksi yang sudah dilakukan dapat disimpulkan bawah daerah tinjauan berpotensi terjadi likuifaksi

I ndonesia is an area that is prone to earthquakes, this is due to the location of Indonesia which is traversed by 3 tectonic plates. From many effects caused by earthquakes, one of them is liquefaction. Liquefaction is the loss of strength of the soil layer due to vibration. In this case, Binjeita has been chosen as one of the sites for the analysis-related review liquefaction potential, using Cone Penetration Test (CPT) and Standard Penetration Test (SPT) data. To determine the potential of liquefaction, a reference is needed, as know as Safety Factor (FS). This FS value is obtained by dividing the value of the Cyclic Resistance Ratio (CRR) by the value of the Cyclic Stress Ratio (CSR). A point will potentially liquefy if it has an FS value of less than 1 (one). The results of potential liquefaction based on CPT and SPT data show that the greater earthquake value (amax) and the earthquake magnitude value (Mw), the smaller FS value obtained. Meanwhile, if the location of the groundwater table is getting shallower, the FS value is getting smaller. Based on the results of the calculation of the liquefaction potential, it can be concluded that the area under review has the potential for liquefaction to occur.