Structural Performance and Stress Contour Analysis of Multi Utility Tunnels Using LISA V.8 Finite Element Analysis
https://doi.org/10.58466/rigid.v3i2.1589
Kata Kunci:
deformation, FEM, LISA, MUT, stressAbstrak
Infrastruktur perkotaan yang semakin kompleks membutuhkan pengelolaan utilitas yang efisien seperti listrik, air, dan telekomunikasi. Terowongan Multi Utilitas (MUT) menyediakan pendekatan terkonsolidasi untuk menampung utilitas ini, mengurangi gangguan permukaan dan meningkatkan efisiensi pemeliharaan. Studi ini menilai kinerja struktur dan distribusi tegangan dalam MUT menggunakan Finite Element Analysis (FEA) melalui perangkat lunak LISA FEA V.8. Analisis ini melibatkan pemodelan geometris MUT secara rinci, dengan mempertimbangkan kondisi awal dan potensi penurunan tanah. Sifat-sifat material untuk baja, beton, kayu, tanah timbunan, dan lapisan permukaan atas ditentukan, dengan fokus pada modulus Young, kepadatan, dan rasio Poisson. MUT diberi tekanan garis seragam sebesar 86,49 kN/m, yang mewakili lalu lintas kendaraan dan beban pejalan kaki. Hasil penelitian menunjukkan bahwa tekanan yang diberikan dan lendutan yang diamati berada dalam batas aman, dengan kekuatan tarik 3,4 MPa dan tekanan saat ini sebesar 3046 kN/m², yang mengindikasikan tidak adanya risiko retak. Lendutan yang teramati sebesar 3,9 mm jauh di bawah batas yang diijinkan yaitu 10 mm, yang menegaskan stabilitas struktural. Baja tulangan juga menunjukkan tingkat tegangan yang berada di dalam batas yang diijinkan, yang menunjukkan kecukupan desain dan memastikan keamanan dan efisiensi struktur dalam kondisi beban yang ditentukan.
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