This system is made up of two main elements, recovery scenarios and resource allocation. The recovery scenarios provides the system with an optimized restoration process through wide analysis based on various data related with six main infrastructure facilities(dam, slope, bank, and etc) damage around waterside. The best recovery resource could be inferred from the resource allocation module based on the result of recovery evaluation. So, this disaster recovery decision support system offers the appropriate information from both main factors to administrator handling or controlling emergency catastrophe situations.

It is important that structure's exact damage analysis and decision-making for recovery when natural disasters cause damage on SOC structure. There are many related studies using geo-spatial data like satellite and aerial images. Recently the interest has increasing about utilizing UAV(Unmanned aerial vehicle). But there are little studies related it. Therefore, we present the extraction method of the shape changes of structure damage using UAV images.

There are currently using widly and universally underwater inspection of based on SONAR around world. Understand the principles od SONAR’s ultrasonic for disaster prevention of underwater structures and though indoor test it could try consideration with respect to the characteristics of the ultrasonic frequency.

Climate change is one of the most essential factors that should be taken into account for dam safety assessment. In this study infiltration/slope stability analyses are performed based on various flood scenarios. Using the results of the numerical analyses, a safety assessment is performed on a fill dam in Nak-Dong River, South Korea.

In order to understand the seismic performance of weir structure under seismic events, concrete weir structure with infinite foundations was modeled in ABAQUS. Additionally, this study conducted the three different design response spectra based on KBC 2009, ASCE 7-05, and EuroCode 8. The results from numerical analyses showed that the seismic behavior of weir structure subjected to seismic ground motions was sensitive to natural frequency and mass participation factors.

This study proposes a flood fragility analysis of bridges for considering debris impacts. The reliability analysis is conducted using the first-order reliability method (FORM) with an finite element model of a bridge column built in ABAQUS. A fragility curve of the bridge column is obtained based on the procedure described in this study.

It is very difficult to predict the slope failure and to evaluate the slope stability, because the slope failure mechanism is complex and there is many influence factors. This paper was conducted to study slope stability analysis based on the measured data on the slope. The methods used in the study are the asymptotic, clustering characteristics, 3D spatial coordinates system. To analysis slope behavior, we studied the advantages, disadvantages and applicability of each method.

It's effective further to use an easy modeling to reduce an numerical analysis cost. There are three kinds for the way to model a RC(Reinforced Concrete) pier by a FE(Finite Element) modeling, using a Solid element, Plane stress element and Beam element. Pushover analysis was executed to three kinds of modeling and a model was improved to raise the validity to the modeling.

In this study, We developed the framework for the vehicle damage estimation according to flood disaster. Especially, we constructed the vehicle inventory DB using dasymetric mapping, and suggested methods for the vehicle classification, asset valuation, depth-damage curve.

In this study, Levee Visual Inspection and Water Level Detection System was developed to handle visual inspection information on the levee effectively by using mobile/intelligent CCTV system. This system will be used to manage levee reasonably, in order to prevent disaster in the riparian areas preemptively on the base of management task.

When flood disaster strikes, it is important for quick and efficient response of management organizations. So it is necessary to develop a specific EAP. FEMA and DHS present a wide range of EAP from Mitigation to recovery of disaster response in the United States. However, Republic of korea and Japan present a relatively narrow range of the EAP shortly after the disaster. Therefore, this study suggests the EAP Framework that includes a wide range consisted of Mitigation, Preparedness, Response, Recovery phases that based on the results of analyzing the United States, Japan, Republic of korea EAP.

The safety of SOC facilities is constantly under threat by the globally increasing abnormal climate. Responding to disasters requires prompt decision-making such as suggesting evacuation paths. For this, spatio-temporal information with convergence of disaster information and SOC facility information must be utilized. Such information is being collected separately by the government or related organizations, but not collectively. Through this study, the disaster and SOC facility-related data, which are being managed separately, can be collected and standardized. The integrated information required for the estimation of facility importance, risk, and damage can be provided. The suggested system is expected to be used as a decision-making tool for proactive disaster response.

The prompt provision of risk map information is defined as a dynamic expression technology in this study. Based on the module, effective disaster information compression plan will be prepared, and prompt information transmission system will be secured in the future.

An innovative material using the thermal insulation concrete (TIC) mixed with a sufficient volume of glazed hollow beads (GHBs) is described and discussed. The effects of glazed hollow beads on the mechanical properties, thermal conductivity and, microstructure of the TIC were first investigated. The study results show that with the increase of the replacement ratio of GHBs, the density, compressive strength, elasticity modulus, and thermal conductivity coefficient of concrete decrease. The optimal mixing amount of glazed hollow beads in the concrete is 15-20%. Then, the properties related to the bonding between the TIC and rebars in freeze-thaw environment were investigated. A total of 132 pullout specimens and 216 cubic specimens made of the TIC were tested, which cover three concrete strength grades, three rebar diameters, and six anchorage lengths. The compressive strength, splitting tensile strength, bond strength, slip, and relative dynamic modulus of elasticity were studied. The research results indicate that the bond performance of the TIC is mainly affected by the rebar diameter and anchorage length, rather than the concrete strength. The TIC is found to be satisfactory in terms of frost resistance and may be utilized in engineered structures in cold regions. Lastly, the effects of recycled coarse aggregate (RCA) on the compressive strength, thermal conductivity, and microstructure of recycled aggregate thermal insulation concrete (RATIC) are presented. The pore fractal dimension was established by using the mercury-injection test data. The average fractal dimension was used to characterize the thermal conductivity of RATIC.

This study is focused on three-dimensional nonlinear finite element analysis of reinforced concrete (RC) beams strengthened with carbon fiber reinforced polymer (CFRP) strips under impact loading. The validity of the model was assessed through the comparison with experimental results obtained from drop-weight impact tests of the authors. The well agreement proves the feasibility of the proposed numerical analysis method.

Corrosion of reinforcing steel leading to structural deterioration and failure of reinforced concrete structures is a serious problem for port and highway agencies, and facility owners. Galvanic anodes have been used to extend the service lives of concrete structures since late 1990s. Embedded Zinc sacrificial anodes have been included in patch repairs of steel reinforced concrete structural elements suffering from corrosion since the mid-nineties. The anodes installed in a UK bridge in 1999 have been monitored, and 10-year data monitored data will be discussed. Galvanic anodes have been used widely in patch repair since then. Recognizing the inadequate monitoring of impressed current cathodic protection that will make it in-effective, distributed galvanic anodes were developed in early 2000s to address the global corrosion issues in concrete structures. Many departments of Transportation (DOTs) and Ministries of Transportation tried and monitored the anodes initially for a few years and considered the trials successes, and have widely used galvanic anodes in bridge decks, abutments, pile jackets and marine structures since then. This paper introduces different levels of corrosion protection offered by galvanic anodes and the various galvanic anode systems used in concrete structures. Various applications of the galvanic systems to extended service lives of concrete structures are presented.

This paper was written to introduce one of US inspection practice using mobile devices such as iPad or Android tablets and other wearable computing devices. Application of mobile device for bridge inspection is to collect all required asset information without filed notes and complete bridge inspection quickly. This provides time-saved input and customized input from the office and on the web. This paper talks about how much this technology is efficiency and useful to give benefit subsequent projects through several US bridge inspection projects performed by Burgess & Niple.

Construction projects of SOC(Social Overhead Capital) have been rapidly increased since 1970s in Korea. So, it is expected that the infrastructures which have been used for more than 30 years will be increased in a few years. The maintenance of infrastructures is essential because the deterioration of infrastructures can greatly influence the national economy and people by its failure. The existing evaluation method of tunnels in Korea is mainly focused on the structural safety such as appearance defects or safety factors. So it has many limitaions which do not consider the tunnels’ various performances, e.g. durability, serviceability and so on. Thus, the new concept of evaluation method is needed to deal with the structure aging issues and to keep the tunnels performances continuously. In this study, the new concept of evaluation method for existing tunnels will be presented. The performance requirements are derived from Delphi-survey which is a structured communication technique. And the weight factors of evaluation indices are derived from AHP(Anlaysis Hierarchy Process) analysis. Finally the total performance evaluation was conduted by field application of target tunnels in Korea to verify the proposed method.

It is important to doubt common knowledge established in the past when we face difficulty to seek further development based on them. In this presentation the importance of doubting common knowledge is pointed out for further endless development of the field of study by discussing stagnation of chloride ion ingress and liquid water penetration into concrete, stagnation of water pass through a crack in concrete and the inconsistency between Carbonation depth and cover concrete spalling risk.

In this research, the application of repair methods of water leakage cracks using self-healing technologies for subway tunnels is presented. In order to apply crack self-healing water stop agents and quick setting agents in subway tunnels, laboratory and field tests were performed based on various previous researches. Especially, this study focused on development of crack repair materials and their new repair methods. Therefore, various repair materials were examined for new repair materials with self-healing capability applied to crack sealing method and to patching repair method. The results show that the proposed water leak repair methods using water stop agent, quick setting agent and patching materials using self-healing ingredient were effective under the subway tunnel conditions. It is preferable in water leak repair to add self-healing components to sealers and water stop agents.