interlock(ing) bored pile retaining wall

2014 ◽  
pp. 740-740
Keyword(s):  
Retaining Wall ◽  
Bored Pile

scholarly journals Load transfer on instrumented prestressed ground anchors in sandy soil

2021 ◽  
Vol 14 (6) ◽  
Author(s):  
Alex Micael Dantas de Sousa ◽  
Yuri Daniel Jatobá Costa ◽  
Luiz Augusto da Silva Florêncio ◽  
Carina Maria Lins Costa
Keyword(s):  
Skin Friction ◽  
Sandy Soil ◽  
Load Transfer ◽  
Retaining Wall ◽  
Load Variations ◽  
Bored Pile ◽  
Ground Anchors ◽  
Anchor Testing ◽  
Wall System ◽  
Unbonded Length

abstract: This study evaluates load variations in instrumented prestressed ground anchors installed in a bored pile retaining wall system in sandy soil. Data were collected from instrumentation assembled in the bonded length of three anchors, which were monitored during pullout tests and during different construction phases of the retaining wall system. Instrumentation consisted of electrical resistance strain gauges positioned in five different sections along the bonded length. Skin friction distributions were obtained from the field load measurements. Results showed that the skin friction followed a non-uniform distribution along the anchor bonded length. The mobilized skin friction concentrated more intensely on the bonded length half closest to the unbonded length, while the other half of the bonded length developed very small skin friction. The contribution of the unbonded length skin friction to the overall anchor capacity was significant and this should be accounted for in the interpretation of routine anchor testing results. Displacements applied to the anchor head were sufficient to mobilize the ultimate skin friction on the unbonded length, but not on the bonded length. Performance of loading-unloading stages on the ground anchor intensified the transfer of load from the unbonded length to the bonded length. Long-term monitoring of the anchor after lock-off revealed that the load at the anchor bonded length followed a tendency to reduce with time and was not significantly influenced by the retaining wall construction phases.

The Application Research and Discussion on a Viaduct Artificial Excavated Pile Technology

2012 ◽  
Vol 446-449 ◽  
pp. 2449-2452
Author(s):  
Dong Guo Li ◽  
Gui Mei Shi
Keyword(s):  
Bearing Capacity ◽  
Pile Foundation ◽  
Retaining Wall ◽  
Wall Effect ◽  
Construction Technology ◽  
Application Research ◽  
Technical Work ◽  
Bored Pile

A viaduct of the Qinglai expressway fourth contract was artificial excavated piles. The construction technical work was regarded as an example. The technical comparison were done between the artificial excavated pile and the bored pile on the pile foundation bearing capacity and the retaining wall effect . The artificial excavated pile replacing the bored pile was feasible, and the construction technology and the key problems of the artificial excavated piles were confirmed. The references were provided to the similar projects.

scholarly journals Desain Dinding Penahan Tanah sebagai Perkuatan Pada Kelongsoran Villa di Hambalang

2020 ◽  
Vol 1 (2) ◽  
pp. 54
Author(s):  
Abi Maulana Hakim
Keyword(s):  
Safety Factor ◽  
Rainy Season ◽  
Retaining Wall ◽  
Preventive Measure ◽  
Soil Movement ◽  
Bored Pile ◽  
Structural Capacity ◽  
Safety Precaution ◽  
Land Sliding

Landslide is one of major issue that occurred during rainy season. This problem is straightforward and able to be prevented with installing reinforcement into the designated landslide location prior to sliding failure. It is effective due to the reinforcement cutting through failure plane, hence strengthen the soil body.  By and large, prior to land sliding, several indications are taken into place, such as soil cracking, structural cracking, vegetation movement, etc. By observing this event, one should be aware that further soil movement are very likely to follow afterwards. Consequently, safety precaution shall be taken. This paper presents one case study in Hambalang, Bogor, West Java, Indonesia. In this case, structural crackings are found in several places, especially at the poolside. These are appeared earlier this year, concurrently with very high intensity rainy season which is predicted to be the cause. Analysis is performed to check the current stability of the slope. The result is showing that the Safety Factor value is 1.181, below the allowable value of 1.5. Then, reinforcement is designed as a preventive measure. It is using retaining wall by employing bored pile coupled with sufficiently thick capping beam. From analysis, the safety factor is increased to 1.553 during critical condition. This value is above the criteria of 1.5 and concluded as a safe design. Structural capacity of bored pile is also designed. Accordingly, the retaining wall is constructed on site in final stage

scholarly journals Study on Deep and Large Foundation Pit of a National First-Class Key Tomb Protection Project

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Jiagang Zhang ◽  
Zhimin Chen ◽  
Mingzhu Hu ◽  
Zhaoguo Wu
Keyword(s):  
Numerical Analysis ◽  
Large Range ◽  
Retaining Wall ◽  
Bending Moment ◽  
Foundation Pit ◽  
Reinforcement Scheme ◽  
Bored Pile ◽  
Maximum Value ◽  
The Stability ◽  
Support Engineering

For the support engineering of the deep and large foundation pit (DLFP) due to tomb protection, there are still no clear standards. The construction of DLFP will introduce large-range transverse and longitudinal disturbance on the stratum; therefore, it should be reinforced. In this paper, the reinforcement of the deep and large foundation pit of a national first-class key tomb protection project is studied. By comparing the existing supporting scheme and the stress conditions of the reinforced tomb, the combination reinforcement scheme by bored pile and pile slab retaining wall is found to be safe and feasible. Furthermore, according to the simulated bending moment, displacement, and axial force of the tomb by numerical analysis, an economic and reasonable mixed anchor support scheme is selected. In order to ensure the stability of the tomb during the supporting process of the foundation pit, a maximum value of 10 mm for the overall settlement of the tomb can be treated as the control benchmark based on the support and anchorage schemes in each specification and the in-site measured settlement values of the tomb. The determined support, anchorage schemes, and the control benchmark can provide certain technique guidance and research significance for the protection of similar ancient buildings in the future.

scholarly journals Probabilistic Assessment of Bored Pile Wall: A Slope Stabilisation Technique

2018 ◽  
Vol 203 ◽  
pp. 04006
Author(s):  
Sadaf Qasim ◽  
Danish Kazmi ◽  
Indra S.H. Harahap ◽  
Muhammad Imran ◽  
Abdul Razzaque Sandhu
Keyword(s):  
Failure Modes ◽  
Retaining Wall ◽  
Soil Parameters ◽  
Retaining Structure ◽  
Slope Stabilisation ◽  
Reliability Based Design ◽  
Flexural Failure ◽  
Bored Pile ◽  
Load And Resistance Factors ◽  
Bored Piles

One of the potential applications of bored piles is the construction of a retaining wall where the piles are closely installed and the spacing between them is often grouted to build a waterproof retaining wall. Based on previous experience, it is observed that the selection of an appropriate retaining structure is crucial to the strength and stability of a structure, provided that the design of retaining structure is adequate and it satisfies the structural requirements. This study considers a Malaysian slope, Bukit Antarabangsa, to perform the probabilistic stability analysis of bored piles. Statistical tools of FORM and Monte Carlo are used to demonstrate the influence of soil parameters on the reliability levels of structure. This paper also presents the load and resistance factors which are developed to counter the rotational and flexural failure modes of a bored pile wall. It is expected that this study will provide a support to the Malaysian geotechnical industry to integrate a reliability-based design for slope construction.

COMPARISON OF THE MEASURED AND COMPUTED PERFORMANCE OF A PROPPED BORED PILE RETAINING WALL AT WALTHAMSTOW. DISCUSSION.

1995 ◽  
Vol 113 (1) ◽  
pp. 58-59
Author(s):  
G V R WATSON ◽  
D R CARDER ◽  
K G HIGGINS ◽  
R FERNIE ◽  
D M POTTS ◽  
...  
Keyword(s):  
Retaining Wall ◽  
Bored Pile

The Safety Assessment of Bored Pile Retaining Wall Based on Back Analysis for Bending Moment

2013 ◽  
Vol 353-356 ◽  
pp. 1015-1023
Author(s):  
Tao Liu ◽  
Yun Bin Chen
Keyword(s):  
Safety Assessment ◽  
Retaining Wall ◽  
Engineering Application ◽  
Back Analysis ◽  
Cost Savings ◽  
Bending Moment ◽  
Internal Force ◽  
Deep Foundation ◽  
Bored Pile ◽  
Foundation Pile

Dynamic safety assessment of internal force of retaining wall is of great significance to ensure the safety construction of deep foundation pile, and the key is to get the actual bending moment. The curvature is acquired by curve fitting of retaining wall reformation with the least squared method, and the actual bending moment can be obtained by multiplying the curvature and retaining wall bending stiffness. This method overcomes the difficult that the actual bending moment cannot be directly measured, at the same time, the cost savings would be of great advantage. As the monitoring item of foundation pile which must be implemented, retaining wall deformation has sufficient data, which provide a solid foundation for the engineering application of back analysis of bending moment. This studied the safety assessment of bored pile retaining wall based on back analysis for bending moment and obtained some beneficial conclusions.

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