Marlon Victor Narwadan, Marwanto Marwanto, Retnowati Setioningsih

Analisis Daya Dukung dan Penurunan Fondasi Gedung Rawat Inap Rumah Sakit Condong Catur dengan Software Plaxis

Introduction

Analisis daya dukung dan penurunan fondasi gedung rawat inap rumah sakit condong catur dengan software plaxis. Kaji daya dukung & penurunan fondasi gedung rawat inap RS Condong Catur menggunakan Plaxis. Analisis data penyelidikan tanah menunjukkan daya dukung Terzaghi/Meyerhoff & penurunan total fondasi telapak.

Abstract

Gedung rawat inap Rumah Sakit Condong Catur memiliki luas bangunan 620 m2 terdiri dari 3 lantai dan menggunakan fondasi telapak dengan perkuatan siklop batu kali. Daya dukung tanah adalah kemampuan tanah menahan tekanan/beban bangunan tanpa menimbulkan keruntuhan dan penurunan yang berlebihan. Tujuan penelitian ini adalah menganalisis daya dukung dan penurunan fondasi gedung rawat inap Rumah Sakit Condong Catur dengan software Plaxis. Analisis yang dilakukan dalam penelitian ini adalah analisis data penyelidikan tanah dan data struktur atas untuk digunakan dalam menganalisis daya dukung dan penurunan pada fondasi eksisting gedung rawat inap Rumah Sakit Condong Catur. Hasil analisis diperoleh daya dukung ijin netto tanah untuk fondasi tipe 1 (FT1) metode Terzaghi sebesar 868,062 kN/m2 dan metode Meyerhoff sebesar 1227,116 kN/m2, untuk fondasi tipe 2 (FT2) metode Terzaghi sebesar 767,092 kN/m2 dan metode Meyerhoff sebesar 1206,106 kN/m2. Penurunan terbesar untuk fondasi tipe 1 (FT1), metode penurunan segera (Si) ada pada fondasi node 17 sebesar 4,376 mm, penurunan total (UZ) software Plaxis 3D ada pada fondasi node 17 sebesar 7,743 mm. Penurunan terbesar untuk fondasi tipe 2 (FT2) metode penurunan segera (Si) ada pada fondasi node 3 sebesar 3,523 mm, penurunan total (UZ) software Plaxis 3D ada pada fondasi node 2 sebesar 7,159 mm.

Review

This paper presents an analysis of the bearing capacity and settlement of the mat foundation for the 3-story Condong Catur Hospital inpatient building, a critical infrastructure project. The objective to utilize Plaxis software, alongside conventional methods, to evaluate the existing foundation's performance is highly relevant, as it directly addresses the structural integrity and long-term serviceability of a public health facility. The study's focus on a real-world structure, leveraging existing soil investigation and superstructure data, provides a practical and valuable contribution to geotechnical engineering practice, particularly in Indonesia where such analyses are crucial for safe and economical design. The methodology employed combines numerical modeling with Plaxis 3D for settlement analysis and traditional analytical methods (Terzaghi and Meyerhoff) for bearing capacity, offering a robust approach to cross-validate results. The abstract clearly articulates the key findings, reporting specific net allowable bearing capacities for foundation types 1 (FT1) and 2 (FT2) from both Terzaghi (868.062 kN/m² and 767.092 kN/m² respectively) and Meyerhoff (1227.116 kN/m² and 1206.106 kN/m² respectively) methods. Furthermore, the maximum immediate settlements (Si) and total settlements (UZ) derived from Plaxis 3D are precisely detailed for both foundation types, ranging from 3.523 mm to 7.743 mm. This comprehensive presentation of results allows for a clear understanding of the foundation's behavior under the building's load. Overall, the paper provides a sound and practical analysis of the foundation's performance. A significant strength lies in the application of an advanced numerical tool like Plaxis to a real-world case, complemented by classical hand calculations, which adds confidence to the findings. To further enhance the paper's impact, the authors could consider including a discussion on whether the calculated settlements and bearing capacities fall within acceptable limits or design codes for hospital buildings, and what safety factors were considered. Additionally, elaborating on the specific soil constitutive models used in Plaxis and the rationale behind their selection would strengthen the methodological description. Despite these minor suggestions, the research offers valuable insights into the foundation's behavior and is a commendable effort in applied geotechnical engineering.

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