scholarly journals Research on Prediction Model of Prestress Loss of Anchor Cable in Soil-Rock Dual-Structure Slope

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Xuhe Gao ◽  
Weiping Tian ◽  
Jiachun Li ◽  
Hongliang Qi ◽  
Zhipei Zhang
Keyword(s):  
Prediction Model ◽  
Difficult Problem ◽  
Prestress Loss ◽  
New Approach ◽  
Dual Structure ◽  
Anchor Cable ◽  
Loss Prediction ◽  
Slope Treatment ◽  
Improved Model ◽  
Prestressed Anchor

The establishment of the prestressed cable loss prediction model is a difficult problem faced by the popularization and use. This article aims at the problem of the loss of anchor cable prestress over time in the soil-rock dual-structure slope. We relied on the soil-rock dual-structure slope treatment project of section K5 + 220-K5 + 770 of Jiangwen Expressway and monitored the prestress loss of the anchor cable in the slope through the anchor cable meter with built-in vibrating wire sensor. Using regression analysis and segmented modelling methods, we established a comprehensive mathematical improvement model, analyzed the applicability of the improved model, and obtained the error range, 0.04%–8.9%. This work offers a new approach for predicting anchor cable prestress loss, which has certain practical value for the use of prestressed anchor cables.

scholarly journals Path loss prediction model development in a mountainous forest environment

2021 ◽  
pp. 1-1
Author(s):  
Bilguunmaa Myagmardulam ◽  
Tadachika Nakayama ◽  
Kazuyoshi Takahashi ◽  
Ryu Miura ◽  
Fumie Ono ◽  
...  
Keyword(s):  
Prediction Model ◽  
Model Development ◽  
Path Loss ◽  
Forest Environment ◽  
Loss Prediction ◽  
Path Loss Prediction

GENE LOSS PREDICTION BASED ON GENOMIC STRUCTURE

2020 ◽  
pp. 258-260
Author(s):  
L. Rubanov ◽  
G. Shilovsky ◽  
A. Seliverstov ◽  
O. Zverkov
Keyword(s):  
Efficient Algorithm ◽  
Gene Loss ◽  
Genomic Structure ◽  
Computing System ◽  
Mutual Arrangement ◽  
New Approach ◽  
Russian Academy Of Sciences ◽  
Loss Prediction ◽  
Academy Of Sciences ◽  
Multiprocessor Computing System

We have developed an efficient algorithm implemented in a program for a multiprocessor computing system, which makes it possible to discover genes lost or acquired during the evolution of most species from a given set. The new approach takes into account the mutual arrangement of genes on a chromosome and allows us to simultaneously consider hundreds of species. The research was carried out using supercomputers at the Joint Supercomputer Center of the Russian Academy of Sciences (JSCC RAS).

scholarly journals Video loss prediction model in wireless networks

PLoS ONE ◽  
2019 ◽  
Vol 14 (3) ◽  
pp. e0212407 ◽  
Author(s):  
João Victor Costa Carmona ◽  
Edemir Marcus Carvalho de Matos ◽  
Bruno Souza Lyra Castro ◽  
Fabrício José Brito Barros ◽  
Miércio Cardoso de Alcântara Neto ◽  
...  
Keyword(s):  
Wireless Networks ◽  
Prediction Model ◽  
Loss Prediction

Feasibility Study of Prestress Force Prediction for Concrete Beams Using Second-Order Deflections

2018 ◽  
Vol 18 (10) ◽  
pp. 1850124 ◽  
Author(s):  
Marco Bonopera ◽  
Kuo-Chun Chang ◽  
Chun-Chung Chen ◽  
Yu-Chi Sung ◽  
Nerio Tullini
Keyword(s):  
Prestressed Concrete ◽  
Concrete Beams ◽  
Flexural Rigidity ◽  
Beam Theory ◽  
Concrete Bridges ◽  
Prestress Loss ◽  
Prestressed Concrete Bridges ◽  
Loss Prediction ◽  
Euler Bernoulli Beam ◽  
Post Tensioned

The safety and sustainability of prestressed concrete bridges can be improved with accurate prestress loss prediction. Considerable loss of the prestress force may imply damages hidden in the bridge. In this study, a prestress force identification method was implemented for concrete beams. Based on the Euler–Bernoulli beam theory, the procedure estimates the prestress force by using one or a set of static displacements measured along the member axis. The implementation of this procedure requires information regarding the flexural rigidity of the beam. The deflected shape of a post-tensioned concrete beam, subjected to an additional vertical load, was measured in a short term in several laboratory experiments. The accuracy of the deflection measurements provided favorable prestress force estimates. In particular, the “compression-softening” theory was validated for uncracked post-tensioned concrete beams.

scholarly journals An Improved Prediction Model Combining Inverse Exponential Smoothing and Markov Chain

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Tong Niu ◽  
Lin Zhang ◽  
Bo Zhang ◽  
Bofan Yang ◽  
Shengjun Wei ◽  
...  
Keyword(s):  
Markov Chain ◽  
Prediction Model ◽  
Threshold Value ◽  
Exponential Smoothing ◽  
Initial Value ◽  
Trend Prediction ◽  
Index Model ◽  
Model Combining ◽  
Improved Model ◽  
Setting Parameters

On the basis of the triple exponential smoothing prediction model, this paper introduces the reverse prediction idea and establishes the reverse triple exponential smoothing model by setting parameters such as threshold value and iteration times and reasonably correcting its initial value. This method can effectively reduce the error of early prediction value. At the same time, aiming at the problem that the predicting advantage of the reverse triple exponential smoothing model weakens in the later period, Markov theory is introduced to correct its error value, and an improved prediction model combining inverse exponential smoothing and Markov chain is further established. The improved model combines the advantages of index model trend prediction and Markov fluctuation prediction, and the prediction accuracy and stability of the model are significantly improved through case tests.

scholarly journals Experimental Study on Load-Displacement Relationship of Prestressed Cable in Red Clay Stratum

2018 ◽  
Vol 38 ◽  
pp. 03007
Author(s):  
Yong Xing Ji ◽  
Yuan Jie Xiang ◽  
Xiao Yong Zhao
Keyword(s):  
Damage Index ◽  
Theoretical Models ◽  
Exponential Model ◽  
Red Clay ◽  
Anchor Cable ◽  
Pull Out ◽  
S Curve ◽  
Plastic Displacement ◽  
Relationship Of ◽  
Prestressed Anchor

The P-S curves of prestressed anchor cable are obtained by field pull-out tests in the red-clay stratum in Guiyang area. The P-S curves of different theoretical models are discussed base on the theoretical analysis. The elastic and plastic displacement of prestressed anchor cable are analyzed. The results shows that, the anchoring effect are mainly effected by the red-clay mechanic properties in the red-clay stratum; the P-S curve of anchor bolt can be fitted well by the exponential model and conformed to the actual; the plastic displacement is used to anchor’s damage index are more truthfulness in the red-clay stratum.

Sign in / Sign up

Export Citation Format

Share Document