Comparative Analysis of Pile Joints

Ptuhina, Irina; Alzhanova, Raushan; Akhatuly, Alisher; Maier, Valentina

doi:10.4028/www.scientific.net/amr.1082.270

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…It could be seen that full welding of end plates and long pins strengthened the continuity of pipe pile joints, which effectively transferred the joint forces to the pile concrete and made its bending strength close to that of the pile material. In particular, the pin type mechanical joint was also a proven efficient connection method [49]. It must be stated that although the above joint strengthening measures are difficult to fully achieve in engineering practice, the joint connection structure can be optimized to enhance the bending strength by using Rachel reinforcement connection implanted into concrete, filling highstrength structural bar glue between end plates, and adding ribs on the inner wall of the pile hoop.…”

Section: Joint Connection Modementioning

confidence: 99%

Bending Strength of Connection Joints of Prestressed Reinforced Concrete Pipe Piles

Tang

Ling

Qi³

2023

Buildings

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The connection joint of prestressed concrete pipe piles is a typical steel–concrete structure, and its bending strength has evolved into a critical factor affecting the safety of supporting structures in underground engineering. Based on full-scale bending tests of five specimens of large-diameter prestressed reinforced concrete (PRC) pipe piles and connection joints, as well as the corresponding finite element numerical simulation, the bending bearing and deformation characteristics of connection joints of PRC pipe piles were analyzed, together with the effects of concrete strength, precompression stress, and connection mode of joints. The results showed that the crack resistance of the welded joint of PRC pipe piles was equivalent to that of the pipe pile shaft, but the ultimate bending moment of the joint was about 58–87% of that of the pile shaft. The bending failure mode of the pipe pile joint was mainly manifested in the end plate yielding into a drum shape, with the tension side of the pile hoop and the end plate clearly separated from the pipe pile, and crushed concrete at the upper edge of the pile hoop. The bending strength of the joint can be improved by increasing the bonding strength between the end plates of the joint or embedding Rachel reinforcement in concrete. In addition, synchronously increasing the strength grade and reinforcement ratio of concrete or strengthening the precompression stress of concrete are favorable measures.

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Section: Joint Connection Modementioning

confidence: 99%

Bending Strength of Connection Joints of Prestressed Reinforced Concrete Pipe Piles

Tang

Ling

Qi³

2023

Buildings

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“…Te experimental results showed that the ultimate antibending capacity of connection joint was greater than that of pile shaft. Several widely used connection methods for precast concrete piles from economic beneft, service life, and feld workload were summarized and compared by Ptuhina et al [23]. Te infuence of topographic and geological conditions was considered by Song et al [24][25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Flexural Behavior of Connected Precast Concrete Square Piles

Dong¹,

Dang

Gao

2023

Advances in Civil Engineering

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Part of deep foundation pit support engineering needs to select connected precast concrete square piles (CPCSPs). Under the premise that the quality of precast concrete square piles (PCSPs) meets engineering requirements, the quality of CPCSPs becomes the key factor to ensure the safety of foundation pit support structures. This paper puts forward a new connection technology of CPCSPs and carries out the flexural behavior experiment of unconnected precast concrete square piles (UPCSPs) and CPCSPs. The distribution of crack and strain on different surfaces of UPCSPs and CPCSPs are measured by carbon fiber composite strain sense optical cables, glass fiber composite strain sense optical cables, and fixed-point polyurethane strain sense optical cables. The anti-crack load, ultimate load, bending moment, and flexural deformation of UPCSPs and CPCSPs are measured. The experimental results of UPCSPs and CPCSPs are compared. The results show that the anti-crack strength of CPCSPs is greatly increased while the flexural deformation of CPCSPs is decreased before the occurrence of crack. With the development of crack (failure stage), the outside areas of hoop steel plate exhibit cracks. At this moment, the strength of CPCSPs is no longer controlled by the strength of middle areas. The ultimate strength of CPCSPs is basically equivalent to that of UPCSPs. The ultimate bending moment of CPCSPs is higher than its design value (about 66%∼76%). The selection of CPCSPs in the design of foundation pit support has good reliability.

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Study on the Flexural Performance of Prestressed Concrete Solid Square Piles and Resilient Clamping Connections

Chen

Fan

et al. 2022

KSCE J Civ Eng

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Comparative Analysis of Pile Joints

Cited by 3 publications

References 5 publications

Bending Strength of Connection Joints of Prestressed Reinforced Concrete Pipe Piles

Bending Strength of Connection Joints of Prestressed Reinforced Concrete Pipe Piles

Experimental Study on the Flexural Behavior of Connected Precast Concrete Square Piles

Study on the Flexural Performance of Prestressed Concrete Solid Square Piles and Resilient Clamping Connections

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