Studi Komparatif Daya Dukung Pondasi Tiang Dengan Teori Meyerhoff Terhadap Teori L’Decourt Berdasar Hasil Uji N-SPT Di Surabaya Timur

Abstract

The condition of the land near the shore caused the land on this project site to be a soil of silt sand. With these conditions it is necessary to evaluate the bearing capacity because the bearing capacity is an absolute requirement that must be considered in the planning of a secure foundation. By knowing the bearing capacity we can plan the load that is given so that the ultimate bearing capacity is not exceeded because if the load that works beyond the ultimate supporting capacity will result in structural failure. The number of power support theorists forced planners to be able to compare the theory where the optimal bearing capacity is used for foundation planning. Calculation of bearing capacity of pile is done by using two theories of Mayerhoof and L 'Decourt theory. Two data points of drill NSPT were used on the land of At-tauhid UM-Surabaya building located in East Surabaya. By providing variations the pole depth (20, 22 and 24 m) and selected square sectional shape (s = 0.5m) with safety factor 3 it can be calculated the bearing capacity of the end (Qp), the bearing capacity of the blanket (Qs), the bearing capacity utimate (Qult) as well as the bearing capacity of the permit (Qall) in order to compare the bearing capacity of the most effective of both theories. From the research results obtained the value of the average bearing capacity based on the value of comparison between L'Decourt to Mayerhof in DB-1 is Qp = 0.96, Qs = 2, Qult = 1.28, Qall = 1.28 and at DB-2 is Qp = 0.96, Qs = 1.99, Qult = 1.21, Qall = 1.21.