The Study On Risk Evaluation And Risk Management For Bridge Construction

In order to improve the level of risk management and prevent all kinds of risk in bridge construction effectively. Pointing at the property of risk in bridge construction, integrating the risk management theory from home and abroad, and the system study was caught out in terms of risk identification, risk assessment, risk management.1 The accident of bridge construction was analyzed based on structure and design factor, construction factor, hydro logic factor, geologic factor, meteorological factor. The main achievement of risk research for bridge construction was summed up, the risk analysis theory suiting for our country was also summed up.2 The risk identification study about possible dangers in bridge construction was studied. The character of risk in bridge construction was analyzed, the usual risk types in bridge construction was elaborated. The process, basis and method of risk identification in bridge construction were induced. The possible risk factors in bridge construction were acquired based on analogy, analysis and conclusion. The risk factors were analyzed in bridge with depth or feeble riverbed. The risk factors in bridge construction were sorted, such as structure factor, design factor, construction factor, hydro logic factor, geologic factor, meteorological factor.3 The risk assessment for a large-scale bridge construction project by AHP method. The hierarchical structure model was constructed firstly, and then the comparison matrix was constructed, and the consistency test was caught out, the whole priority sorting was put up at last. The correctness of the method was verified through actual research for risk accident of a bridge. The linear regression analysis was analyzed for 0, 1 random number using Monte-Carlo method, the result indicated that the method was an effective method for bridge construction. The consequence appraisal procedure for bridge construction was offered based on quantification thought combining risk identification study and basing on sorting for risk aftereffect. The risk analysis was analyzed fully through constructing risk assessment model.4 The comparation of the several risk evaluation method was carried out based on analyzing the risk factor in bridge construction, The good method that combined the AHP method with fuzzy general evaluation method.