Suggestion on the Prototype of the Korean Barriers through the Investigation and Modeling of RC Protective Installments in Contact Areas

Abstract

The aim of this study is to suggest design requirements on the military barriers which are installed to reduce critical damage on protective facilities against sudden pin-point attacks caused by North Korean artilleries. For this purpose, site investigation and review of design drawings associated with barriers built in the contact areas are conducted. With identified data concerning barriers, the geometric modeling, which is used in the structural analysis, is performed. And then, the possible threat of North Korea is determined based on intelligence preparation of battlefields. Once the structural modeling and threat analysis are completed, structural damage on barriers and protective facilities are assessed in terms of impact, penetration, scabbing, and blast pressure effects. According to the analysis results, the thickness of barriers should be 450㎜ at least and current established barriers need to be structurally reinforced via sectional enlargement.

Automated Vision-Based Detection of Cracks on Concrete Surfaces Using a Deep Learning Technique

“…In the case of the United States, the condition of their infrastructure is graded as D+ on average, and the rehabilitation cost for bridges in the USA is expected to be $123 billion [ 1 ]. In Korea, due to a slightly later development from the 1970s, the percentage of structures older than 30 years was estimated as 3.8% in 2014, while it is expected to increase exponentially and reach 13.8% in 2024 and 33.7% in 2029 [ 2 ]. Similarly, most of the industrialized countries are paying attention to the development of cost-effective structural maintenance strategies using state-of-the-art information and communication technologies.…”