Shear performance of the interfaces for precast concrete shear wall components by novel preparation method

Zhu, Zhangfeng; Zhang, Guo; Lu, Hongbin

doi:10.1002/suco.202100504

Cited by 3 publications

(1 citation statement)

References 22 publications

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“…The prefabricated concrete structure has been one of the essential structure types in building industrialization, [1][2][3] owing to its major advantages: high quality of precast concrete members, fast construction speed, low labor cost, and energy consumption, [4][5][6][7][8] so it has been widely used in various countries and regions in the world. 9,10 Generally, the connections are the most paramount part in the design of precast concrete structures.…”

Section: Introductionmentioning

confidence: 99%

Mechanical behavior of semi‐grouting sleeve and steel bar connection

Bai

Liang

et al. 2023

Structural Concrete

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A series of pull‐out tests were conducted on semi‐grouting sleeve and steel bar connections to investigate the mechanical behavior of the connectors. Taking the steel bar diameter, anchorage length, and grouting material strength as the parameters. The test results showed that when the anchorage length was small and the grouting material strength was low, sufficient anchorage strength cannot be provided, specimens were subjected to bond slip failure, which belongs to the brittle failure. When the anchorage strength between the steel bar and the grouting material was sufficient, the steel bar breaking occurred on the specimens, which belongs to the ductile failure. Then, the semi‐grouting sleeve and steel bar connection was modeled by finite element software, and the bond slip between the steel bar and grouting material was simulated by COMBIN39 element. The results indicated that the failure mode of the specimen obtained by finite element simulation was the same as the test result. The ultimate bearing capacity of the specimen was highly similar to the test result, which verified the feasibility of the modeling method in this paper. Next, the number of specimens and parameter levels were increased through finite element modeling, and the influences of steel bar diameter, anchorage strength, and grouting material strength on the ultimate bearing capacity of semi‐grouting sleeve and steel bar connections were analyzed. The results testified that the ultimate bearing capacity of the specimen increased with the increase of steel bar diameter. In a certain range, the ultimate bearing capacity of the specimen increased with the raising of anchorage length and grouting material strength. While the anchorage length increased, the ultimate bearing capacity of the specimen did not necessarily increase because of the uneven distribution of stress. The steel bar diameter had the most significant influence on the ultimate bearing capacity of the specimen, while the grouting material strength had the most negligible impact, that was, increasing the steel bar diameter is the most effective method to improve the ultimate bearing capacity of the specimen. Finally, according to the results of finite element analysis, the calculation method of ultimate bearing capacity with different failure modes was obtained, and it has been proved to be effective and accurate by the comparison of calculated results and test results. The results of this paper have great significance for improving the calculation theory and design method of relevant engineering.

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Section: Introductionmentioning

confidence: 99%

Mechanical behavior of semi‐grouting sleeve and steel bar connection

Bai

Liang

et al. 2023

Structural Concrete

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An analytical solution for shear bearing capacity of circumferential joints of precast concrete segmental tunnel linings considering dowel action

Amjad,

Zhang,

Liu

2024

Structural Concrete

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The capacity of the circumferential joint of the precast concrete segmental tunnel lining (PCTL) structure in terms of shear performance principally includes the dowel action by connector/bolt as well as friction force, and it is a vital parameter to assess the mechanical response of the circumferential joint. Further, as there was no analytical model available for precise estimation of a circumferential joint in terms of the shear‐bearing capacity considering the dowel action of the bolt in the presence of axial/normal force, therefore in this investigation, an analytical model has been proposed to estimate the shear‐bearing capacity of the circumferential joint. Furthermore, the analytical model's precision and accuracy were validated via large‐scale experimental investigation on a circumferential joint of PCTL. Upon comparing analytical model outcomes with experimental results, absolute error varied between +5% and −9%, with an average value of the coefficient of friction at the yield point of the bolt. Moreover, the formation of hinges on the side of the bolt within the segment was considered a failure of the circumferential joint. Additionally, the parametric investigation revealed that with just a 1% change in axial force, the diameter, pre‐tightening, and yield strength of the bolt and concrete strength improved by 2.85%, 1%, 0.27%, 0.26% and 0.17% shear‐bearing capacity of the circumferential joint respectively. Axial force variation greatly influences the shear‐bearing capacity of circumferential joint followed by diameter, pre‐tightening, yield strength of the bolt, and concrete strength. Conclusively, with analysis of axial force distribution around the ring for the tunnel, the proposed model has been applied to a full ring to estimate shear bearing capacity.

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Shear performance of steel plug-in joints for the precast concrete sidewalls of subway entrance/exit structures

Zhu

Zhang

2022

Case Studies in Construction Materials

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Shear performance of the interfaces for precast concrete shear wall components by novel preparation method

Cited by 3 publications

References 22 publications

Mechanical behavior of semi‐grouting sleeve and steel bar connection

Mechanical behavior of semi‐grouting sleeve and steel bar connection

An analytical solution for shear bearing capacity of circumferential joints of precast concrete segmental tunnel linings considering dowel action

Shear performance of steel plug-in joints for the precast concrete sidewalls of subway entrance/exit structures

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