Settlement Of High Embankment Research Articles

Prediction of high-embankment settlement combining joint denoising technique and enhanced GWO-ν-SVR method

Reliable long-term settlement prediction of a high embankment relates to mountain infrastructure safety. This study developed a novel hybrid model (NHM) that combines a joint denoising technique with an enhanced gray wolf optimizer (EGWO)-ν-support vector regression (ν-SVR) method. High-embankment field measurements were preprocessed using the joint denoising technique, which includes complete ensemble empirical mode decomposition, singular value decomposition, and wavelet packet transform. Furthermore, high-embankment settlements were predicted using the EGWO-ν-SVR method. In this method, the standard gray wolf optimizer (GWO) was improved to obtain the EGWO to better tune the ν-SVR model hyperparameters. The proposed NHM was then tested in two case studies. Finally, the influences of the data division ratio and kernel function on the EGWO-ν-SVR forecasting performance and prediction efficiency were investigated. The results indicate that the NHM suppresses noise and restores details in high-embankment field measurements. Simultaneously, the NHM outperforms other alternative prediction methods in prediction accuracy and robustness. This demonstrates that the proposed NHM is effective in predicting high-embankment settlements with noisy field measurements. Moreover, the appropriate data division ratio and kernel function for EGWO-ν-SVR are 7:3 and radial basis function, respectively.

The Application of Gray Theory on Predicting the Settlement of High Embankment

Stability of the road embankment is the foundation of the highway normal operation and maintenance, so there is strict requirement of road subgrade settlement for the highway. This article uses the gray theory to predict Cheng Chi high embankment construction settlement and builds a predicted model and tests the model’s accuracy. The results of settlement prediction are under the limits, so the stability of the road subgrade is good. This dynamic prediction method can be used on prediction of the settlement of high embankment and it’ll direct the operation and ensure the maintenance safety.

Research on the Prediction of High Embankment Settlement Based on the Real-Time Monitoring On-Site

Based on the real-time settlement monitoring of embankment on-site, Hyperbola method and Index curve method are used in the prediction of embankment settlement and the prediction results were compared to verify the feasibility and the potential engineering value of the prediction of embankment settlement. The calculation results showed that the relative error of the results calculated by the above methods was controlled within 2%. The accuracy of early settlement prediction of Index curve method was lower than the accuracy of later settlement prediction, but the predicting result met the needs of the engineering accuracy. The accuracy of settlement prediction of Hyperbola method was significantly higher than Index curve method. Through the comparing and analyzing of the prediction results of embankment settlement, the final settlement value calculated by Hyperbola method was higher than the real-time monitoring on-site, and the final settlement value calculated by Index curve method was lower than the real-time monitoring on-site, Hyperbola method is more suitable for the estimation to the subsidence of actual embankment engineering construction.

Analysis of the Influence Factors of Differential Settlement of High Embankment in Mountain Area

This paper reveals and analyses various influence factors which cause differential settlement of high embankment in mountain area using indoor consolidation test and field loading test. In this research, the actual stress characteristics of high embankment are simplified, stability compression value of stuffing with loads under lateral restricted conditions can be measured, e-p curves and p-s curves are drawn, we can calculate compression modulus as computation criteria to estimate the settlement of high embankment. The results indicate that unconsolidated flow of high embankment is the main factor to cause differential settlement of high embankment in mountain area. As the soil consolidated, compressive deformation and the strength gradually increase, the bearing capacity of the foundation is enhanced to reduce differential settlement of the post-construction of high embankment.

Study on Settlement of High Fill Embankments on Rock Slope under Complicated Stress Conditions

Compared with general roadbed，high fill embankment has the characteristics such as higher height， larger cumulate settlement and it’s stability should be technical analyzed. High fill embankment is one of the most important projects in highway engineering. The settlement in highway construction, especially the differential settlements, may lead to the cleft and stagger of pavement，and largely affect the quality of driving as well as the operational life span. So how to reduce the settlement and get rid of the danger made by the settlement has been an important subject in highway construction field and the research has important reality significance. Therefore, in order to master the deformation law of high fill embankment on rock slope under complicated stress conditions, systems of monitoring network are established to monitor the settlement of high embankment with strong weathering filling, high embankment on rock slop and high rock fill abrupt slope embankment respectively. Through analysis of settlement of high fill embankment stability under complicated stress conditions, conclusions are made in details.