This is based on the evaluation of the management quality theory, by integrating the related theory; we present a comprehensive Six Sigma quality management theory for highway engineering quality supervision and management. This theory uses the total quality management theory to realize the full responsibility of the main participation, and it uses Six Sigma quality management theory to guide the various stages and key processes of quality management, and it uses fuzzy comprehensive evaluation method to achieve the evaluation of the entire project and the various processes. This essay provides the working program which uses this theory and the corresponding quality management content.
In this study, an experimental investigation program on a newly proposed seismic isolation technique, namely “Geotechnical Seismic Isolation (GSI) system”, is conducted with an aim of simulating its dynamic performance during earthquakes. The testing procedure is three-fold: (1) A series of cyclic simple shear tests is conducted on the key constituent material of the proposed GSI system, i.e., rubber-sand mixture (RSM) in order to understand its behavior under cyclic loadings. (2) The GSI system is then subjected to a series of shaking table tests with different levels of input ground shakings. (3) By varying the controlling parameters such as percentage of rubber in RSM, thickness of RSM layer, coupled with the weight of superstructure, a comprehensive parametric study is performed. This experimental survey demonstrates the excellent performance of the GSI system for potential seismic hazard mitigation.
In this paper, the combination of antenna array detection method of ground penetrating radar is put forward to solve the actual engineering problem that it is difficult to monitor the length of CFG pile. The experiments of length of six CFG piles find that the relative error of the length is 5.26%. The result indicates that it is enough reliable to determine the pile length by using the GPR method and can meet the engineering needs. Furthermore, the effect of the mix proportion, moisture content on the monitoring quality is obtained.
Because it is difficult to monitor the quality of gravel pile (the length, the diameter) in composite foundation, the method of radar is put forward. Numerical simulations of radar monitoring on flexural pile are processed. The results show that the method of radar monitoring can be used to check the quality of gravel piles (length, diameter) accurately. Then this technology is applied in some highway project. By comparing with the results of another company, the characteristics including high precision and speed are found. So the technology can be far and wide used.
In this paper, , the combination of antenna array detection method of ground penetrating radar is put forward to solve the actual engineering problem that is difficult to monitor the integrity of the flexural pile composite foundation. The experiments of defects of six tamping soil cement piles find that the relative error of the pile position of defects is 5.25%. The result indicates that it is enough reliability to determine the pile defects by using the GPR method and can meet the engineering needs. Furthermore, the effect of age of cement, the ration between soil and cement, depth and types of defects on the monitoring quality is obtained.
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