Perbandingan Daya Dukung Fondasi Bore Pile Berdasarkan Metode Empiris dan Loading Test Pada Proyek MTH 27 Office Suites

GHEANIFA IRMA Y, Dr. Eng. Iman Haryanto, S.T., M.T.

2019 | Tugas Akhir | D3 TEKNIK SIPIL

Fondasi merupakan struktur terpenting dalam bangunan yang berfungsi untuk meneruskan beban struktur atas ke lapisan tanah. Nilai daya dukung fondasi diperoleh dengan cara empiris dan uji lapangan. Penelitian ini bertujuan untuk mendapatkan nilai daya dukung fondasi secara empiris dan berdasarkan data lapangan loading test, serta membandingkan nilai daya dukung fondasi dengan metode empiris dan lapangan. Penelitian ini menggunakan metode Meyerhof untuk menghitung nilai daya dukung fondasi empiris berdasarkan data Standard Penetration Test (SPT) dan metode Bagemann untuk menghitung nilai daya dukung fondasi empiris berdasarkan data sondir. Sedangkan nilai daya dukung fondasi berdasarkan data lapangan dianalisis menggunakan metode Chin (1971) dan metode Mazurkiewicz (1972). Hasil yang didapatkan dari analisis yang telah dilakukan adalah nilai daya dukung fondasi kelompok tiang (Qall) berdasarkan data sondir sebesar 5110,74 ton. Sedangkan nilai daya dukung fondasi kelompok tiang (Qall) berdasarkan data Standard Penetration Test (SPT) sebesar 235,89 ton. Nilai daya dukung fondasi kelompok tiang (Qall) hasil loading test menurut metode Chin (1971) sebesar 277,78 ton, sedangkan menurut metode Mazurkiewicz (1972) nilai Qall tidak dapat diperoleh. Nilai daya dukung fondasi berdasarkan data loading test jauh lebih kecil daripada nilai daya dukung fondasi berdasarkan metode empiris.

Foundation is the most important structure in the building which has funtion to continue the upper structural load to the ground floor. The value of foundation bearing capacity obtained by empiric method and field test. The purposes of this research are to get the value of fouundation bearing capacity based on empiric method and to get the value of foundation bearing capacity based on loading test data and also comparing the value of foundation bearing capacity based on empiric method with the field test data. This research was using Meyerhof method to get the empirical value of foundation bearing capacity based on Standard Penetration Test (SPT) data and using Bagemann method to get the empirical value of foundation bearing capacity based on sondir data. While the value of foundation bearing capacity based on field test data was analyzed using Chin method (1971) and Mazurkiewicz method (1972). The result obtained from the analysis that has been done is the value of foundation bearing capacity of a group pile (Qall) based on sondir data is 5110,74 ton. While the value of foundation bearing capacity of a group pile (Qall) based on Standard Penetraion Test (SPT) is 2335,89 ton. The value of foundation bearing capacity of a group pile (Qall) based on loading test data using Chin method (1971) is 277,78 ton, while the analysis that using Mazukiewicz method (1972) couldn’t be obtained. The value of foundation bearing capacity based on loading test data is smaller than the value of foundation bearing capacity based on empiric method.

Kata Kunci : daya dukung fondasi, metode Meyerhof, metode Bagemann, sondir, Standard Penetration Test (SPT), loading test