Article Per Year (5 Year)
p-Index From 2021 - 2026
0.408
P-Index
This Author published in this journals
All Journal CRANE: Civil Engineering Research Journal Jurnal Teknik Sipil
Naomi Pratiwi
Teknik Sipil, Universitas Katolik Parahyangan, Bandung, 40141, Indonesia
Civil Engineering, Building, Construction & Architecture

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
KAJIAN EKSPERIMENTAL STRESSED SKIN PANEL MENGGUNAKAN CROSS-LAMINATED TIMBER DAN GLULAM Naomi Pratiwi; Johannes Adhijoso Tjondro; Alexander Mario Kwa
CRANE: Civil Engineering Research Journal Vol 7 No 2 (2026): CRANE - OKTOBER
Publisher : Program Studi Teknik Sipil, Fakultas Teknik dan Ilmu Komputer, Universitas Komputer Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34010/crane.v7i2.19820

Abstract

Engineered wood products such as glulam and Cross-Laminated Timber (CLT) offer sustainable alternatives to large-dimension structural timber. This study investigates the flexural behavior of Stress Skin Panels (SSP) composed of CLT skins and glulam stringers, comparing single-skin (SSP-T) and double-skin (SSP-G) configurations using Sengon wood. Static bending tests were conducted on two specimens per configuration to evaluate strength, stiffness, ductility, and failure modes. Results show that the double-skin configuration yields limited increases in ultimate capacity by 7.8% and stiffness by 8.2%, indicating partial composite action. However, deformation capacity increases significantly by 71.2%, with a 38% improvement in ductility ratio and a 61.5% reduction in bending stress, reflecting more uniform stress distribution. Single-skin panels exhibit brittle stringer failure, whereas double-skin panels demonstrate progressive failure governed by interfacial slip and delamination. These findings highlight the effectiveness of double-skin SSP in enhancing ductility and post-elastic performance.
Analisis Numerik Tekuk Torsi-Lateral Balok Baja I Web Tapered Naomi Pratiwi; Paulus Karta Wijaya; Lintang Ayu Dewintasari Hardianto
Jurnal Teknik Sipil Vol 22 No 1 (2026): Jurnal Teknik Sipil
Publisher : Universitas Kristen Maranatha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28932/jts.v22i1.13490

Abstract

The phenomenon of lateral–torsional buckling (LTB) in nonprismatic web-tapered steel beams is not yet explicitly covered in SNI 1729:2020, which was developed based on prismatic sections. This regulatory gap creates uncertainties in determining the capacity of beams with varying cross-sections. This study investigates the LTB behavior of web-tapered beams through nonlinear finite element analysis, accounting for geometric imperfections and residual stresses. A parametric analysis was conducted by varying the taper ratio, unbraced length, and load application points (at the shear center and top flange) for both uniformly distributed and concentrated loads. The results indicate that the combined effects of geometric imperfections and residual stresses reduce the critical moment by approximately 23% on average relative to the critical moment formulation. Furthermore, increasing taper ratio, unbraced length, and the destabilizing load configurations further decrease the critical moment capacity. Based on calibration against the numerical dataset, a set of geometric and loading correction factors is proposed to modify the critical moment formulation in SNI 1729:2020. The proposed model demonstrates good agreement with the numerical results, with an average prediction error of 3.99%, a maximum deviation of 13.96%, and a coefficient of determination (R²) of 0.92. The resulting equation provides a practical and rational design-oriented approach for secondary steel beam applications without requiring full nonlinear finite element analysis.
Co-Authors Alexander Mario Kwa Johannes Adhijoso Tjondro Lintang Ayu Dewintasari Hardianto Paulus Karta Wijaya