A Bearing Capacity of Bamboo Cluster Pile on Saturated Soft Soil Based on the Direct load Test and CPT’S Data

Abstract

One of the constructions that can be used to overcome the problem of soft soil is through pile mattress bamboo construction. This construction consists of bamboo arranged as mattresses and bamboo arranged as cluster of piles. The cluster pile consists of several bamboo culms tied together (cluster pile). Cluster pile capabilities that are not analysedfor strength can result in wastage or construction failure. Hence, this study was intended to analysethe ability of clusters pile through recorded direct observation and compare them based on sonder (CPT) data. The method is carried out by direct observation of the model at the research site. The model observed are clusters with a length of 8 m, inserted into soft soil and then vertical loading is carried out until the soil that supports it collapses. There are 3 types of clusters pile, namely cluster piles C3, C4, and C7. The results showed that the ultimate bearing capacity of the cluster based on the direct load test was relatively the same as the calculated with sonder data. Thus, this study established the ultimate bearing capacity (Pult) which can be determined using the equation, Pult= 7.4056Ac, where Pultin (kg), and Ac is cluster area in (cm2).