Analysis of Risk in Collapse of Deep Foundation Pit in Dry Construction of Wharf
The risk in collapse of deep foundation pit in dry construction of wharf is studied qualitatively and quantitatively based on the combination of FTA and AHP.The reference value is proposed according to the probability ratio between i and j.Construction cases are combined with accident statistics to find the advantages and disadvantages of evaluation methods,analyze the causes for deviation,determine critical risk factors,and classify the risks,which assist risk prevention and control,and provide a reference for similar projects.The research results show that any risk evaluation may be affected by some judgemental points,thus a large amount of real-measured statistics are requested to correct errors;The greater the difference between the importance of factors,the wider the deviation produced by calculating probabilities based on the decision matrix;AHP applies to the establishment of decision matrix and solution,the calculation results of probabilities highly consist with general trend;Based on engineering practice,the risk in collapse deep foundation pit is evaluated to be level Ⅱ.
risk analysisrisk evaluationcollapse of foundation pitAHPFTAwharf
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