KAJIAN PENURUNAN TANAH TIMBUNAN PENYEBAB KERETAKAN STRUKTUR RIGID PAVEMENT DENGAN MENGGUNAKAN METODE ASAOKA (Studi Kasus Proyek Pembangunan Jalan XYZ)

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<p>Rigid pavement work on the XYZ Road Construction Project experienced a problem, <br />namely the occurrence of cracks in the rigid pavement structure above the box <br />culverts under which soil improvement was carried out using embankment soil. The <br />purpose of this study is to analyze the factors that cause settlement of the <br />embankment that causes the rift of the rigid pavement structure on box culverts built <br />on embankment soil so that the results can be used as a reference for handling or <br />repairing rigid pavement work on box culverts with a structure piled up soil in <br />subsequent segments. From the results of the analysis it can be seen that the process <br />of casting rigid pavement was carried out at two points, namely Point 1 and Point 2 <br />where after casting the rigid pavement, the subgrade beneath it still experienced a <br />decrease of 10 mm and 6 mm. This decline occurred for up to 3 months and caused <br />cracks in the rigid pavement structure above it. This is due to the difference in <br />settlement of the box culvert which was initially assumed not to have decreased <br />again with the surrounding embankment which was still experiencing settlement. In <br />addition, the results of the analysis show that the rigid pavement design uses a <br />single reinforcement so that the capacity of the concrete (Mu) is less than the weight <br />of the concrete itself which causes the concrete to crack.</p>