Base resistance of drilled shafts in soft rock using in situ load tests: A limit state approach

Asem, Pouyan

doi:10.1016/j.sandf.2019.04.007

Cited by 15 publications

(4 citation statements)

References 55 publications

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“…As a resource system, the management of resources is essential, which requires the resource allocation system to have certain fault tolerance, scalability and maintainability [9][10]. Lines of business access the resource allocation server and apply for resources to the system through the server [11][12].…”

Section: Ds Architecturementioning

confidence: 99%

Dynamic Distributed Based on PLC Software Redundancy

2022

DPS

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At present, with the development of technology, dynamic distributed system (DDS) have been widely developed in many fields, and the maintenance requirements of the system have also undergone great changes. There are still many places worth discussing about the redundant fault-tolerant mechanism for data loss., so this paper studies the DDS based on PCL soft redundancy. The research on DDS in this paper can be divided into three parts. First, it introduces the architecture of distributed system(DS), dynamic monitoring resources, and an overview of redundant fault-tolerant mechanisms, followed by the collection nodes and resource management of DS. Design, and finally analyze the node repair collection degree and download time.

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Section: Ds Architecturementioning

confidence: 99%

Dynamic Distributed Based on PLC Software Redundancy

2022

DPS

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“…The results show that the side resistance is mobilized prior to base resistance in the process of external load transmitting to the lower part, particularly for super-long piles [10,12,32,39]. The side resistance is mobilized by shear motion of the pile-rock interface, which could be equivalent to the interaction of the concrete-rock interface [1,20,24,25,36].…”

Section: Introductionmentioning

confidence: 99%

Modification of bearing capacity of rock-socketed pile: considering concrete-rock interface roughness and gravity stress of concrete

chen,

Yin,

2023

Preprint

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The mobilization of side resistance has a significant effect on load-transfer characteristics and the ultimate bearing capacity of rock-socketed piles. A better understanding of the shear mechanism of concrete-rock interface is of great significance to load transfer of rock-socketed piles. However, the calculation of the bearing capacity of rock-socketed pile in the current code does not consider the effects of the roughness of the concrete-rock interface and gravity stress of concrete. A series of direct shear tests of concrete–rock interface samples confirm that the shear strength of the concrete–rock interface is increase with interface roughness and concrete gravity stress. The numerical results show that roughness and concrete can significantly affect the friction resistance distribution of pile, especially for hard rock. A modified vertical bearing capacity formula of rock-socketed pile is presented based on numerical simulation. It is indicated that the modified formula can better describe the bearing characteristics of rock-socketed piles, and the calculated results are closer to the measured values than the specifications by two real experimental cases.

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“…erefore, dead weight or reaction frame is not required in the selfbalanced loading test. e bearing capacity can be obtained from two load-displacement curves of the upper and the lower segment of the pile [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Study on Behavior and Bearing Capacity Computation Method of Shallow Rock-Socketed Short Piles Based on the Self-Balanced Loading Test

Liu

Shao

Huang

et al. 2022

Computational Intelligence and Neuroscience

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The self-balanced loading test is a state-of-art pile testing method, but its suitability to pile bearing capacity determination in transformer substation engineering in mountainous and hilly areas is not yet clear. In this study, a two-dimensional axisymmetric numerical model is established by the PLAXIS software to simulate the behavior and bearing mechanism of shallow rock-socketed short piles based on the self-balanced loading test. The model is first validated by simulating the field tests of two adjacent piles under self-balanced loading. Then the influence factors of the load-displacement curves of piles are analyzed. Thereafter, the mechanical mechanism of the self-balanced loading tests is simulated and compared with the conventional static loading tests. It is observed that the rock modulus, rock-socketed depth of piles, and burial depth of the Osterberg Cell affect the load-displacement significantly, but the cohesion of the rocks affects little. Moreover, compared with the conventional static loading tests, the shear stress of the pile-soil interface distributes less uniformly under self-balanced loading conditions. On this basis, a bearing capacity computation method of shallow rock-socketed short piles based on the self-balanced loading test is proposed.

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Base resistance of drilled shafts in soft rock using in situ load tests: A limit state approach

Cited by 15 publications

References 55 publications

Dynamic Distributed Based on PLC Software Redundancy

Dynamic Distributed Based on PLC Software Redundancy

Modification of bearing capacity of rock-socketed pile: considering concrete-rock interface roughness and gravity stress of concrete

Study on Behavior and Bearing Capacity Computation Method of Shallow Rock-Socketed Short Piles Based on the Self-Balanced Loading Test

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