## 1 Introduction  
Korean legislation has stipulations on risk evaluation of earthquake-damaged buildings. The intention is to minimize casualties from secondary disasters and economic losses from delayed recovery by enabling emergency measures to be taken on buildings damaged by earthquakes, but there are no specific standards yet for risk evaluation of damaged buildings [1]. Risk evaluation standards for damaged buildings are urgently needed to reduce secondary damage to the level equivalent to that in developed countries. In consideration of the architectural structures in Korea, it is necessary to develop and evaluate a reinforced concrete structure with reinforced seismic resistance and a pre-casting concrete panel applied with carbon fiber hybrid. Additionally, there is a need to implement a technology for evaluating residual seismic performance. Carbon fiber sheets suppress cracking activities by reinforcing cracks formed on the surface of reinforced concrete structures due to impact, excessive load, and fatigue load [2; 3; 4]. They can also recover the strength of concrete structures, provide excellent wear resistance by reinforcing the surface of existing concrete structures, and increase the flexural strength by reinforcing concrete structures on the tensile side [5; 6; 7]. The quantity of reinforcement work has increased in Korea, with an emphasis on the importance of maintenance. From 1 December 2017, owners of a new building construction are required to receive from the designer and submit documents confirming structural safety and seismic design. Korean construction companies should increase investment in seismic technologies and strengthen their capacity in advanced seismic technologies to secure technological competitiveness and enter the global construction market. The Ministry of Public Safety and Security established the 2017 Seismic Reinforcement Measure for Public Facilities, which covers various public facilities such as structures, roads, and schools. According to phase 2 of the Master Plan for Seismic Reinforcementof Public Facilities, 28 government ministries and 17 local governments will spend KRW 839.3 billion to conduct seismic reinforcement of 2542 places out of 105,448 places subject to seismic reinforcement from 2016 to 2020. The demand will increase with the application of seismic response standards to asphalt works. Institutional standards for seismic design in Korea were prepared based on the design standards of the United States. The Seismic Design Regulation was enacted in 1988 and has been reinforced consistently ever since with the expansion of application areas. Seismic engineering technologies were mainly developed by countries experiencing frequent earthquakes, such as the United States and Japan. Other countries engaging in active research on seismic design include France, New Zealand, and Canada. The Korean government is constantly strengthening seismic design regulations, and national interest in earthquakes increased after the Gyeongju Earthquake in September 2016. Japanese construction companies have developed independent reinforcement methods such as the AF method, the SR-CF method, the CRS-CL method, and the WARS method, which are centered on the composite fiber attachment method. Such methods are being actively applied at construction sites. Accordingly, Japan engages in vigorous R&D and the history of reinforcement methods can be seen as well as the history of composite fiber reinforcement methods. In particular, the Japanese Ministry of Construction started a five-year research project called the \"Development of New Technologies to Improve Seismic Performance of Existing Structures\" in 1996. During this project, the Building Research Institute and CF Construction Association created a nationwide research system and set up a continuous fiber sheet method review committee to develop technologies for improving the seismic performance of existing buildings using continuous fibers such as carbon fiber and aramid fiber.