Affiliation:
1. Building Engineering Test Center, China Academy of Building Research Co., Ltd., Beijing 100013, China
2. CABR Testing Center Co., Ltd., Beijing 100013, China
Abstract
The testing of the foundation pile is an important means to ensure the quality of the foundation pile in the construction process, and the low-strain pile test is one of the most commonly used testing technologies. However, in order to ensure that the testing signal is effective and reliable, it is necessary to provide the preliminary judgment results when acquiring the testing signal in the field. In this paper, we propose a data classification method for low-strain pile testing data using a recurrent neural network as the core. In this method, after identification, tailoring, and normalization, the input feature vector with a sequential structure is sent into this model. The model ensures the efficient use of data values while considering the sequential relationship among the data. At last, we designed and produced one complete model pile and six asymmetric model piles, which can form thirteen kinds of testing signals. The optimal application model was selected by the 10-fold cross verification method, and the influence of increasing the input feature dimension on the accuracy was discussed. Finally, compared with the other two methods, this model has the highest accuracy, at 98.46%, but it requires more training parameters and a longer training time.
Funder
China Academy of Building Research Co., Ltd
Subject
Building and Construction,Civil and Structural Engineering,Architecture
Reference66 articles.
1. Huang, Z.F., Bai, X.H., Yin, C., and Liu, Y.Q. (2021). Numerical analysis for the vertical bearing capacity of composite pile foundation system in liquefiable soil under sine wave vibration. PLoS ONE, 16.
2. An experimental study on the phase lags in response of pile base pressure to waves at different horizons with silty soil;Wang;Coastal Eng.,2012
3. Causes of pile foundation failure in permafrost regions: The case study of a dry bridge of the Qinghai-Tibet Railway;You;Eng. Geol.,2017
4. Probabilistic analysis and reliability assessment for acceptance rate of foundation pile testing;Zheng;Chin. J. Geotech. Eng.,2009
5. Real-time monitoring of construction quality for gravel piles based on Internet of Things;Chen;Automat. Constr.,2020