GABLE FRAME STRUCTURE PLANNING USING LRFD METHOD IN PAMEKASAN FACTORY WAREHOUSE PROJECT

Currently, the use of steel as a building construction has been widely used as the main material for building structures. Steel frames come in a variety of profiles and sizes. The use of steel frames can be adjusted to the type of construction to be built. From the results of the planning of the WF steel roof structure on the factory warehouse construction project in Pamekasan, it was obtained planning data: Gording using Profile C 125x50x40x4,5. Trekstang uses 8 mm diameter, Wind ties use 10mm diameter steel, Rafter uses WF 350x350x19x19 profile, column uses WF 350x350x19x19 profile, 8 pieces A325 bolts with 22 mm diameter, Hoist Crane Beam uses IWF Bulit-Up beam with 600x1144x18x22 profile, Base Plate uses a size of 500x500x8mm with a column of 600x600.

Optimization of steel roof trusses using machine learning-assisted differential evolution

A steel truss is a preferred solution in large-span roof structures due to its good attributes such as lightweight, durability. However, designing steel trusses is a challenging task for engineers due to a large number of design variables. Recently, optimization-based design approaches have demonstrated the great potential to effectively support structural engineers in finding the optimal designs of truss structures. This paper aims to use the AdaBoost-DE algorithm for optimizing steel roof trusses. The AdaBoost-DE employed in this study is a hybrid algorithm in which the AdaBoost classification technique is used to enhance the performance of the Differential Evolution algorithm by skipping unnecessary fitness evaluations during the optimization process. An example of a duo-pitch steel roof truss with a span of 24 meters is carried out. The result shows that the AdaBoost-DE achieves the same optimal design as the original DE algorithm, but reduces the computational cost by approximately 36%.

Analysis on accumulated deformation and stress of the steel roof of Beijing Opera House during construction

This paper aims to study the stress and deformation of large steel structure buildings in the actual construction process. Midas Gen finite element software is used to simulate and analyze the whole construction process of the curved reticulated shell roof, the peripheral steel columns and the permanent support. The stress and deformation results of the structure in the final construction state are compared with those in the design state under one-time loading. The results show that, in the final construction state, the maximum tensile stress and the maximum compressive stress are 1.9 times and 2.0 times of that in the design state under one-time loading respectively, which is very significant. When the design model is loaded with weight at one time, the maximum tensile stress and the maximum compressive stress of the structure both appear near the opening of the steel roof, while in the final construction state, the maximum tensile stress of the structure appears near the boundary frame beam, and the maximum compressive stress appears on the main ridge beam. The maximum vertical displacement of the structure in the final construction state is 2.0 times of that when the design model is loaded at one time. The maximum vertical displacement of the design state appears near the opening of the steel roof, while the maximum vertical displacement of the structure in the final construction state appears on the main ridge beam. In view of the above, the effective guidance for the construction of steel roof structure is provided in this paper to ensure the safety of the structure.

Information System in Booking Weight Steam Based on Web

The development of information technology today requires all activities to run well. Almost all agencies or companies already use a variety of applications to support their work, for easy in performing daily operational activities. Similarly, PT. XYZ whose company is engaged in lightweight steel roof distributor region of west Jakarta, also want to provide the best ordering services for customers and business partners. As one of the emerging distributors of course in terms of service lightweight steel roofing, PT. XYZ make use of web-based application system to serve as a means in conducting service ordering lightweight steel roof. In this case the research is done to design an application on web-based software that is application service in ordering lightweight web-based steel roof by using OOAD (Object Oriented Analysis Design) method with modelling using object-oriented approach that is UML (Unified Modelling Language). The results to be achieved is a service application in ordering lightweight web-based steel roof that can provide convenience services for customers who want to order lightweight steel roof and as well as a marketing tool for lightweight steel roof in PT. XYZ.