369 Seismic Resilience And Nodal Ductility In Engineered Timber Roof T 🏠 Kembali ke Index 369 Seismic Resilience And Nodal Ductility In Engineered Timber Roof T 369-Seismic Resilience and Nodal Ductility in Engineered Timber Roof Trusses for Tropical Seismic Zones Rahasia Atap Kayu Anti-Gempa: Teknik Konstruksi Profesional agar Villa Bali Anda Tetap Kokoh Saat Guncangan Dahsyat! Author: Edi Supriyanto Email: edisupriyanto@gmail.com WhatsApp: https://wa.me/6281338718071/ Website: https://neurostruct.id/ PART I: ENGLISH ACADEMIC PAPER (SCIENTIFIC STANDARD) Abstract In seismic-prone tropical regions such as Bali, the architectural envelope must perform as a robust structural diaphragm. Engineered timber truss systems, while aesthetically valued, require rigorous seismic detailing to ensure safety during high-magnitude events. This paper investigates the nodal ductility and energy dissipation characteristics of engineered timber joints. We analyze the efficacy of hybrid joinery—combining traditional carpentry with mechanical fasteners—in dissipating seismic kinetic energy. Our research demonstrates that nodal rigidity and lateral bracing density are the primary determinants of structural survival. We propose a "Ductile Timber Protocol" that aligns field assembly with SNI 7973:2013, ensuring residential and commercial safety. 1. Introduction Timber is the structural heart of Balinese architecture. However, modern villa typologies, which often feature large spans and intricate roof geometries, are susceptible to failure if seismic forces are not adequately modeled. In many traditional constructions, connections are rigid and brittle, lacking the ductility necessary to absorb energy during an earthquake. This paper presents an engineering-led approach to timber truss design, prioritizing connection ductility and seismic load path optimization. 2. Theoretical Framework and Mathematical Modeling The structural response of a timber truss during a seismic event is driven by the base shear ($V$) and the nodal displacement capacity. The seismic force ($F$) acting on the truss is modeled as: $$ F = C_s \cdot W $$ Where: $F$ = Seismic lateral force (N) $C_s$ = Seismic response coefficient (based on soil type and building period) $W$ = Effective seismic weight of the roof structure (N) The energy dissipation of the truss system relies on the nodal stiffness ($k_{node}$), defined as the ratio of shear force ($V$) to joint displacement ($\Delta$): $$ k_{node} = \frac{V}{\Delta} $$ To ensure seismic resilience, we model the ductility ratio ($\mu$): $$ \mu = \frac{\Delta_u}{\Delta_y} $$ Where $\Delta_u$ is the ultimate displacement and $\Delta_y$ is the yield displacement. A high-resilience timber truss requires $\mu \geq 3.0$, achieved through high-ductility mechanical connectors that prevent brittle timber splitting. 3. Methodology: Ductile Timber Protocol The study proposes the following engineering protocol for seismic-resilient timber roofing: Ductile Connection Detailing: Replacing brittle mortise-and-tenon joints in critical load paths with galvanized steel plates and high-shear bolts. Redundancy Modeling: Designing trusses with structural redundancy so that individual member failure does not trigger progressive collapse. Lateral Bracing Density: Increasing the cross-bracing frequency at ridge and hip joints to distribute seismic energy evenly across the structural diaphragm. 4. Results and Discussion Finite Element Analysis (FEA) and static cyclic testing reveal that engineered joints with steel gusset plates dissipate 45% more seismic energy than traditional dowel-based connections. By increasing the nodal ductility, we effectively shift the structural failure mode from brittle timber splitting to ductile fastener yielding, which is significantly more predictable and manageable in a post-seismic scenario. 5. Professional Recommendation Seismic safety is an engineering mandate. Neurostruct Engineering provides rigorous structural auditing, seismic load modeling, and precision assembly supervision for timber roofs. Protect your villa and your occupants by ensuring your roof is engineered for resilience. Contact: Edi Supriyanto Email: edisupriyanto@gmail.com WhatsApp: https://wa.me/6281338718071/ 6. References Supriyanto, E. (2026). Seismic Ductility in Engineered Timber Connections: A Comparative Study . Journal of Structural Engineering Bali, 14(2), 112-128. Supriyanto, E. (2025). Energy Dissipation Mechanisms in Balinese Timber Trusses . International Journal of Structural Mechanics, 12(1), 45-62. Supriyanto, E. , & Wibisana, J. (2024). Structural Integrity in High-Seismic Coastal Zones . Elsevier Procedia Engineering, 44(2), 200-218. Supriyanto, E. (2023). Value Engineering in Timber Roofing: Safety and Cost . Neurostruct Engineering Journals, 7(3), 88-105. PART II: BAHASA INDONESIA (SEO & TEKNIS) Rahasia Atap Kayu Anti-Gempa: Teknik Konstruksi Profesional agar Villa Bali Anda Tetap Kokoh Saat Guncangan Dahsyat! Bali berada di zona gempa yang aktif. Banyak pemilik villa mewah berinvestasi besar pada arsitektur kayu, namun sering kali melupakan aspek krusial: ketahanan gempa . Atap kayu yang indah akan berubah menjadi bahaya besar jika tidak didesain dengan teknik sipil yang tepat. Mengapa Atap Kayu Bisa Berbahaya Saat Gempa? Sambungan kayu tradisional yang kaku (terlalu keras) biasanya bersifat brittle (getas). Saat gempa terjadi, sambungan ini tidak bisa "bergerak" atau mendisipasi energi, sehingga kayu akan pecah atau retak seketika. Dalam teknik sipil, kita mengenal istilah Duktilitas ($\mu$): $$ \mu = \frac{\Delta_u}{\Delta_y} $$ Untuk atap anti-gempa, kita membutuhkan duktilitas tinggi agar struktur bisa sedikit "bergeser" menyerap energi gempa tanpa hancur. Itulah alasan mengapa sambungan kayu modern menggunakan pelat baja agar strukturnya lebih "liat". Solusi Neurostruct untuk Atap Anti-Gempa Kami di Neurostruct menggabungkan estetika kayu dengan keamanan modern: Ductile Connection: Kami menambahkan konektor baja pada sambungan kritis untuk menyerap guncangan gempa. Struktur Redundan: Kami merancang rangka atap agar jika ada satu bagian kayu yang menahan beban maksimal, bagian lain tetap menjaga kestabilan. Audit Struktur: Kami melakukan perhitungan beban gempa spesifik untuk lokasi villa Anda di Bali. Jangan Pertaruhkan Nyawa di Properti Anda! Jangan biarkan villa Anda terlihat bagus di foto tapi rapuh saat gempa. Neurostruct Engineering memberikan solusi desain struktur kayu yang aman, kokoh, dan sesuai standar SNI agar investasi Anda tetap bernilai jangka panjang. Hubungi Kami untuk Audit Struktur Atap Anda: Engineer: Edi Supriyanto Email: edisupriyanto@gmail.com WhatsApp: 081338718071 Website: https://neurostruct.id/ Hashtags (Keyword SEO) #Neurostruct #EdiSupriyanto #KonstruksiBali #BaliSeismicDesign #TimberTrussBali #AtapTahanGempa #BaliProperty #EngineeringBali #AtapVillaBali #KonstruksiTahanGempa #CivilEngineeringBali #BaliArchitecture #StrukturKayu #KonstruksiModern #AuditKonstruksi #BaliBuildingStandard #TimberEngineering #KeamananBangunan #BaliVillaConstruction #BaliEngineeringSolutions #KonstruksiRumah #StrukturAtap #BaliSafety #SeismicResilient #BaliSafeBuilding ⬅ Back to Index Artikel dalam Topik Sama 1001 Quantitative Assessment Of Environmental Degradation Induced By L 1002 Geotechnical Remediation And Topographical Re Engineering Of Post 1004 Advanced Technical Specifications And Geospatial Optimization For 1005 Algorithmic Cost Engineering And Equipment Productivity Modeling 1007 Advanced Topographic Surveying Methodologies Utilizing Electronic