Research on whole process cost control of highway engineering based on improved AHP
The problem of high construction cost of highway engineering needs to be solved urgently.AHP(Analytic Hierarchy Process)evaluates risk factors based on expert experience,which can simplify complex prob-lems and structuring multi-standard problems.However,according to the statistical results of all experts'scores,this method calculates the geometric average score of each factor,and then constructs a judgment matrix after calcu-lating the weight value of each index.During the process,due to factors such as experts'professionalism and sub-jective judgment,the judgment error is large,which may cause inaccurate evaluation results.Based on this,the a-nalysis model of the whole process cost control of a highway construction project is established,and the improved AHP method is used to evaluate the factors of the whole process cost control of the project.The improved AHP method establishes the comprehensive judgment matrix of the target layer according to the scores of influencing fac-tors given by each expert.The maximum eigenvalue of the judgment matrix is calculated,when the consistency of the judgment matrix is within the acceptable range,and then the value of the consistency index function is calculat-ed.The value of the consistency index function represents the closeness between the expert's evaluation results and the actual situation on site.After ignoring the scores of experts with large errors by combining the weight of judg-ments,the scores of the remaining experts are weighted and averaged,by combining the judgment weights a com-prehensive judgment matrix is obtained.Finally,the weight values of influencing factors are obtained according to the obtained comprehensive judgment matrix,and the weights of influencing factors are sorted.The results show that the type and scale of civil engineering in a highway construction project,the requirements of the construction u-nit,the actual situation of the construction site,materials and machinery,and overall design factors have a signifi-cant impact on the whole process cost control.This result is basically consistent with the actual situation of the pro-ject.In the construction of this highway project,attention should be paid to these factors and the engineering cost should be controlled scientifically and reasonably.
highway engineeringcost controlAHPwhole process cost control
万方数据
维普
