Hasan Dani, Suprapto, Arik Triarso, Puguh Novi Prasetyono, Feriza Nadiar, Anggi Rahmad Zulfikar
Analysis of the lateral bearing capacity of foundations is often carried out for high-rise buildings, while for medium- and low-rise buildings it is rarely carried out. However, the latest regulations require an analysis of the lateral bearing capacity of foundations for all types of buildings. The foundation must be designed to be able to accept lateral forces due to earthquakes and wind for all types of buildings. The 8-story Kidney Center Building in Malang is a medium-rise building planned for 2020. In the planning, an analysis of the lateral bearing capacity of the foundation has not yet been carried out, so with the confirmation of the new regulations, it is necessary to carry out a lateral bearing capacity analysis to find out whether the initial foundation design is still able to provide adequate lateral bearing capacity for the building. The lateral bearing capacity of deep foundations is limited by a lateral deflection of 2.5 cm and the nominal moment of the deep foundation material itself. For this reason, in this article, we will discuss a study of the lateral bearing capacity parameters of deep foundations in the planning of the Kidney Center Malang building to determine the influence of length, concrete quality, cohesion, and lateral force on the deflection and moment of foundation piles in very stiff clay layers with uniform conditions and not saturated. This research method starts from collecting project data, literature studies, manual calculations using the Broms and Daniel method, calculations using Allpile software, analyzing and concluding the influence of foundation parameters, and comparing the two calculations. The results of this research show that (1) when β · L > 5, it turns out that increasing the length of the foundation pile has no effect on the value of the lateral deflection and moment of the foundation pile. (2) When the concrete quality and cohesion increase, the lateral deflection and moment of the foundation pile will decrease. The results of the Broms and Daniel method are very similar to the Allpile results where the average difference is < 4%. (3) When the lateral force increases, the lateral deflection and moment of the foundation pile also increase. The results of the Broms and Daniel method are quite in accordance with the Allpile results where the average difference is ≤ 10% for the lateral deflection. Meanwhile, the moment gives very similar results overall between the Broms and Daniel methods and Allpile where the average difference is < 4%. (4) Foundation pillars for the Malang Kidney Center Building, where the planned foundation diameter is 60 cm, 22 m depth, including very stiff clay soil, capable of receiving lateral forces with a lateral force factor of 2.5 ≥ 2 with a lateral deflection value of 0.217 cm. Where this value in SNI 8460:2017 regulations concerning Geotechnical Design Requirements, where the lateral force factor requirement must be greater than > 1.5 and for maximum deflection it must not be greater than ≥ 2.5 cm. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.
Department of Civil Engineering, Vocational Faculty, State University of Surabaya, Surabaya, Indonesia
