scholarly journals Determination of Young Elasticity Modulus in Bored Piles Through the Global Strain Extensometer Sensors and Real-Time Monitoring Data

2019 ◽  
Vol 9 (15) ◽  
pp. 3060 ◽  
Author(s):  
Hossein Moayedi ◽  
Bahareh Kalantar ◽  
Mu’azu Mohammed Abdullahi ◽  
Ahmad Safuan A. Rashid ◽  
Ramli Nazir ◽  
...  
Keyword(s):  
Skin Friction ◽  
Real Time ◽  
Soil Layer ◽  
Monitoring Data ◽  
Real Time Monitoring ◽  
Stress Strain ◽  
Friction Resistance ◽  
Bored Pile ◽  
Global Strain ◽  
Bored Piles

For friction piles depending on the friction resistance, accurate prediction of unit skin friction around the pile shaft is the dominant resistance to measure the final bearing capacity of a bored-pile. The present study measures the stress–strain transferring in two instrumented bored-piles (BP #1 & BP# 2) embedded within the soil layer in Kuala Lumpur by real-time monitoring global strain extensometer (GSE) sensors. Two bored-piles (i.e., having 1.80 m and 1.0 m diameters, as well as 36 m and 32 m lengths) have been loaded with two times to their design working loads. Extensive data are analyzed to measure the changes in stress–strain in the bored-pile. The effect of loading and unloading stages on the pile’s head and base settlement has been monitored, indicating that Young modulus of elasticity in concrete bored-pile ( E c ), average strain, and unit skin friction changed along the bored-pile based on the ground site conditions and stress registered. One example of two case studies with great real-time monitoring data has been provided to further design.

Moving Boundary Simulation of Iron-Zinc Sacrificial Corrosion under Dynamic Electrolyte Thickness Based on Real-Time Monitoring Data

2020 ◽  
Vol 167 (4) ◽  
pp. 041503 ◽  
Author(s):  
Mohsen Saeedikhani ◽  
Nils Van den Steen ◽  
Sudesh Wijesinghe ◽  
Sareh Vafakhah ◽  
Herman Terryn ◽  
...  
Keyword(s):  
Real Time ◽  
Moving Boundary ◽  
Monitoring Data ◽  
Real Time Monitoring

scholarly journals Construction and application of the 3D geo-hazard monitoring and early warning platform

2021 ◽  
Vol 13 (1) ◽  
pp. 1040-1052
Author(s):  
Dunlong Liu ◽  
Lei He ◽  
Qian Wu ◽  
Yan Gao ◽  
Bin Liu ◽  
...  
Keyword(s):  
Real Time ◽  
Information Management ◽  
Early Warning ◽  
Relevant Information ◽  
Geographical Information ◽  
Monitoring Data ◽  
Real Time Monitoring ◽  
Uniform Resource Identifier ◽  
Service Architecture ◽  
Monitoring And Early Warning

Abstract As geo-hazard monitoring data increases in category and size, conventional geo-hazard information management systems, without a unified integration framework and visualized data display, are unable to satisfy the urgent needs of geo-hazard information management. Representational State Transfer (REST), a resource-centered service architecture, abstracts data and services into resources for unified Uniform Resource Identifier access, enabling it to take full advantage of HTTP with great flexibility and scalability. Based on the REST service architecture, this paper constructs a 3D geo-hazard monitoring and early warning platform with sound service compatibility and scalability by integrating geographical information, real-time monitoring data, and early warning models into the 3D Digital Earth framework. The platform displays topography, stratum lithology, and relevant information, as well as real-time monitoring data in a 3D visual, and provides early warning services for geo-hazards through access to real-time early warning models. As a result, it is capable of providing comprehensive information management, monitoring, and early warning of multiple geo-hazards, aiding decision-making in disaster prevention and mitigation, and enhancing the information level of geo-hazard prevention and mitigation work.

scholarly journals Settlement and bearing capacity of the circular foundation

2018 ◽  
Vol 196 ◽  
pp. 03019 ◽  
Author(s):  
Zaven Ter-Martirosyan ◽  
Vitalii Sidorov
Keyword(s):  
Critical Load ◽  
Bearing Capacity ◽  
Cross Section ◽  
Strain State ◽  
Circular Cross Section ◽  
Stress Strain ◽  
Bored Pile ◽  
Bored Piles ◽  
Design Case ◽  
Base Soil

In process of designing foundations of circular form in plane, as well as bored piles of circular cross section, there is important to quantify the stress-strain state and the bearing capacity of the soils interacted with the foundations, as well as under the toe of piles. The article presents the formulation and solution of the problem of determining the initial critical load at the base of the circular foundation, which is also relevant for the design case of the soil under the toe of a circular bored pile. It is shown that the condition of limiting equilibrium arises both under the center of the loaded area and on the contour of the circular loading area, and primarily on the contour. A comparative estimate showed that the ratio of the initial critical load to the base soil of the circular foundation under the center of the site is 2 times greater than the corresponding load for the point at the edge of the site.

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