Research on construction engineering safety Risk Control based on IAHP-TOPSIS

Based on the improved analytic hierarchy process (IAHP) and TOPSIS method to build the construction project safety evaluation index system used to evaluate the safety management of construction projects in the construction stage, so as to control the safety risk of the project, prevent the occurrence of safety accidents, and improve the level of safety management. Through make a statistical analysis of the recent safety accidents in construction projects in China, comprehensively consider the four aspects of human, object, environment and management, establish 12 evaluation indexes of construction project safety management. Through improved analytic hierarchy process (AHP) to determine evaluation index weights vector, combined with the ideal solutions for sorting method, put forward a IAHP method and TOPSIS method based on the safety evaluation model.The research results show that the model can accurately show the deficiencies of the safety management of the evaluation object, and directly reflect the safety management level of the evaluation object. The research conclusion is consistent with the actual situation of the project, which can provide guidance for the improvement of safety redundancy and safety risk control of construction engineering.

Evaluation and analysis of comprehensive performance of a brake pedal based on an improved analytic hierarchy process

Due to the considerable increase in car parc and the remarkable improvement in vehicle properties and cost performance, higher requirements are being placed on driving comfort. With regard to the braking system, the enhancement of the brake pedal feel is one of the ways to improve the comfort, and affecting factors include spatial layout, dynamic characteristics, and the characteristics matching with the vehicle motion, so a comprehensive evaluation of a brake pedal is highly essential. This paper, by taking passenger cars in China as the research object, established a comprehensive evaluation system for pedals based on the improved analytic hierarchy process. The index weight in each index level was determined through the G1 method, and an experimental design was conducted on individual indices on the lowest level. The relationship parameters between the indices were measured through the test and comprehensive scores of each automobile pedal were obtained in combination with the evaluation method designed. Based on comprehensive scores, a typical analysis on 16 test vehicles was carried out, followed by a comparison of different index levels. Through result analysis, the direction for pedal improvement was proposed, and the feasibility of the method with the case is verified, which provides a scientific basis and a reference for vehicle pedal development, the calibration in position layout, and the pedal design.