ABSTRACT:
The growing demand for precast constructions, especially in the development of skyscrapers, metro rail bridges, and similar large-scale infrastructure, presents significant challenges in seismic design. To efficiently manage design costs and enhance structural performance, engineers employ 3D modeling techniques during the planning phase, allowing for a comprehensive analysis of how the structure will behave under seismic forces before manufacturing begins. This approach utilizes concrete damage plasticity features within Finite Element Analysis (FEA) software to simulate the nonlinear behavior of concrete under stress. By adjusting the joint contact forms, engineers can pinpoint the precise cracking load, which is crucial for optimizing the structure’s resilience. Specifically, in residential construction, the study investigates two different types of connections made from M25 and M30 grade concrete, exploring various geometric cross-sectional sizes to determine the most effective joint design that balances both performance and cost-efficiency for seismic safety.
Aim:
The aim of this project is to optimize the design of seismically resilient precast concrete structures by analyzing their behavior using 3D modeling and Finite Element Analysis (FEA). The primary goal is to identify the optimal joint design for precast constructions, considering factors such as concrete grade (M25 and M30) and geometric cross-sectional sizes. Through the use of concrete damage plasticity nonlinear features in FEA software, the project seeks to determine the cracking load and evaluate the performance of various joint configurations under seismic conditions. Ultimately, the aim is to enhance the structural integrity and cost-effectiveness of precast constructions, particularly for large-scale infrastructure projects like skyscrapers and metro rail bridges.
Objective:
The primary goal of this study is to develop and analyze a precast building using advanced simulation tools to ensure its seismic resilience and overall structural integrity. The process begins with a comprehensive literature review on precast buildings, which has been completed, providing a foundation for understanding current practices and challenges in the field. The next step involves gaining proficiency in the use of Abaqus, a leading Finite Element Analysis (FEA) software, which is crucial for simulating the behavior of precast concrete structures under various loads, including seismic forces. The study specifically employs Abaqus with a concrete damage plasticity model to simulate the material’s nonlinear behavior, a task that has been partially completed. Once the simulations are conducted, the results will be analyzed and compared to determine the optimal design parameters, providing valuable insights into the performance of precast buildings and contributing to more efficient and resilient building designs.
