MIDAS CIVIL NX | Features

Key Features

Through the dedicated seismic performance process menu, MIDAS CIVIL NX calculates both the holding and required performance of bridges and provides a detailed seismic performance assessment report that reflects the results of nonlinear section analysis and seismic analysis. Dynamic boundary nonlinear analysis enables precise analysis of bridge structures by considering the nonlinearity of foundation separation devices. Using MIDAS CIVIL NX's Pushover analysis feature, the software can compare the resistance capacity of structures after yield with the required seismic response by considering the nonlinear material properties of components. Additionally, the software provides an inelastic time history analysis, which predicts the inelastic behavior of components using a simplified hysteretic model and helps understand the seismic response characteristics of structures.

Seismic Wave Scaling Function
MIDAS CIVIL NX offers a feature for scaling actual seismic waves. Seismic wave scaling is a function that adjusts seismic waves based on the design response spectrum of a specific region before applying actual seismic waves for seismic assessment. It provides options for adjusting amplitude and frequency to match the Earthquake Scaling criteria.
Seismic Performance Evaluation and Design
MIDAS CIVIL NX provides a dedicated menu for seismic performance evaluation and design, allowing for the safety assessment of the seismic performance of existing structures according to the latest design criteria and evaluation standards (KSCE-USD/LSD, KISTEC 2015/2019). The process involves estimating holding performance, required performance, evaluation of bridge piers and support lengths, seismic performance evaluation, and generating Excel-format reports. It offers a fast and accurate environment for assessing seismic performance.
Dynamic Boundary Nonlinear Analysis
Dynamic boundary nonlinear analysis should be applied when considering the nonlinearity of foundation separation devices for precise analysis of bridge structures. With MIDAS CIVIL NX, various forms of nonlinear connection elements can be used for seismic and moment bearing device analysis. It allows for the use of nonlinear properties simultaneously with inelastic elements. The software provides analysis capabilities for structures with nonlinear connection elements (General Link), nonlinear properties of spring elements, various dampers and moment bearing devices (Gap, Hook, Viscoelastic Damper, Hysteretic System, Lead Rubber Bearing Isolator, Friction Pendulum System Isolator), and allows input of static loads as dynamic loads (Time Varying Static Loads).
Pushover Analysis
MIDAS CIVIL NX's Pushover analysis function is a nonlinear static analysis that considers the material's nonlinear properties to assess the resistance capacity of a structure after yielding in comparison to the required seismic response. Pushover analysis can control lateral loads using load control or displacement control methods, supports various load patterns such as Mode Shape, Static Load, and Uniform Acceleration, and allows for the assessment of seismic performance through the calculation of performance points and comparison of seismic responses.
Inelastic Time History Analysis
Inelastic time history analysis provided by MIDAS CIVIL NX is used to predict the inelastic behavior of components through a simplified hysteretic model and understand the seismic response characteristics of structures. The software offers options for examining nonlinear analysis results, such as hinge distribution, displacement/velocity/acceleration, and time history graphs on a timestep basis. It includes built-in databases for over 50 ground motion records, supports various inelastic history models, and allows for seismic analysis through the import of artificial seismic waves. This analysis type enables precise analyses, including variations in axial force, compression failure, tensile cracking, confinement effects on yield, compressive yield, buckling, and collapse of rebars.

Features

Seismic Analysis and Design

Convenient Analysis and Design through Specialized Seismic Performance Processes

Key Features