**3. Building a system for a server**

#### **3.1 System overview**

The server constantly evaluates the resonance by tremors and analyzes by PML (Probable Maximum Loss) value, and makes a prediction judgment of the damage degree classification judgment standard of the damaged building. In the evaluation of resonance by constant tremor, ground analysis by Shake is performed, seismic motion in the surface layer ground is created, transfer function and H/V spectrum are obtained, and resonance is evaluated from the ground predominant period and the natural period of the building. In addition, noise removal such as smoothing and low-pass filter is also processed on the server side for the measured value data. On the other hand, in PML, the damage rate of the building is calculated by obtaining the inter-story deformation angle from the bilinear model of the building consisting of the stochastic seismic velocity and the base shear coefficient of the building.

The operation is to receive the measurement result of constant tremor from the terminal, execute the analysis, and then save the data in SQL. In addition, considering the changes in the analysis method in the future, it is a prerequisite that the input data is appropriately stored in the server and that the data stored in SQL is specified or provided in a form that is easy to see for the majority. The hardware or software environment of the server is selected in all aspects such as capacity, speed, stability, etc., to meet these assumptions, but by consolidating analysis or data storage, etc., in one place, data falsification can be done. There is no room stable results can be provided, and there is the merit that the burden of analysis on the terminal can be removed. To execute these tasks, the server development environment utilizes **Table 2**.


#### **Table 2.**

*Server development environment.*

**Figure 4.** *Overall analysis flow (1) and judgment flow (2).*
