Strengthened of Wooden Trusses Structure and Retrofitting Methods to Increase Load Capacity
Journal Title: Engineering and Technology Journal - Year 2025, Vol 10, Issue 02
Abstract
Assessing after the strong earthquake, several wooden truss structures were damaged. The damage varies from dislocation of the truss mounts with their supports, displacement between the curtain rods and truss frames as well as damage to the truss joints themselves. This research will study the types of damage, causes and methods of strengthening and repairing element of roof truss and frame that were damaged after a strong earthquake based on the level of damage, method and materials suitable for implementation. Data on the damage to the truss structure described were obtained from field assessments as well as secondary data from earthquake events from various regions in Indonesia and other parts of the world and segmental testing of truss. Failed in tension, compression, shear and support were found due to insufficiency of connecting devices and incomplete configuration of truss elements. The age factor and the wood material preservation system also cause the level of damage to the frames of these horses to be higher. Conventional strengthening methods using wood, iron, stainless steel, steel wire/cable, and the addition of connecting devices such as pegs, nail, screw, bolts, steel plates, tooth plate connects, and steel anchors are sufficient to increase the strength and rigidity of the wooden truss frame structure system. but not significantly increase the ductility. Alternative materials based on resins and polyurethane / polyether adhesives and healed wood have the potential to used. The results showed that the use of this type of material can increase the ductility and strength of 20-40% over conventional reinforcement systems such as nails and other connecting devices. Retrofitting L joint with strip plate, C70.35.0.45 stainless steel and L35.35.3 can increase maximum load capacity with ratio 1.25; 1.64 and 1.87 respectively.
Authors and Affiliations
Ketut Sulendra , Gidion Turu’allo , Atur Siregar,
Keywords
Related Articles
- EP ID EP758620
- DOI 10.47191/etj/v10i02.04
- Views 41
- Downloads 0
Determining Priorities for Handling Environmental Road Sections in Palu City (Case Study in West Palu District)
Palu City has numerous roads, including environmental road networks, where the function of many environmental roads has decreased due to heavy traffic and damaged road structures. The improvement of environmental road in...
Review on the Mechanical Properties of Pineapple Leaf Fiber (PALF) Reinforced Epoxy Resin Based Composites
Synthetic materials possess with several drawbacks as most of the cases they are not environmental friendly where the scientists and researchers are very much concern about the environmental issues. That’s why alternativ...
Comparative Corrosion Inhibition Test Study in Phosphate Buffer Saline for 316L Stainless Steel with Electrospun PCL Coating with Different Additives
In this study, ten different contents of PCL-based nanofibers containing ZnO, CuO, NiO, 2F TSC, 4F TSC and graphite additives (PCL+Graphite+CuO+NiO+ZnO, PCL+ZnO+Graphite, PCL+ZnO+NiO+CuO, PCL+ZnO, PCL+Graphite, PCL+ZnO+2...
Analysis of the Cost of Footplate Foundation Work in the Construction of the Exit Gate and Cafeteria of Delta Surya Hospital, Sidoarjo District, Sidoarjo Regency
Cost is the main factor in a stage of a construction project that concerns the provision of funds that must be prepared by the project owner. Cost budgets have a crucial role in project implementation so they need to be...
SUPERLUMINAL PROPAGATION OF PULSE AS ANOTHER ULTRA-FAST PHENOMENON, AND ITS APPLICATION
Another kind of ultra-fast phenomenon, superluminal transmission of light pulse，was proposed, its velocity can faster than the infinite that was proved in theory and experiment. Based on two kinds of epistemology and wo...