Experimental and numerical investigation on mechanical properties of grouted-sleeve splices

被引：43

作者：

Liu, Chao ^{[1
]}

Pan, Liufeng ^{[1
]}

Liu, Hai ^{[1
]}

Tong, Huawei ^{[1
]}

Yang, Yubing ^{[2
]}

Chen, Wei ^{[3
]}

机构：

[1] Guangzhou Univ, Sch Civil Engn, Guangzhou 510006, Peoples R China

[2] South China Agr Univ, Coll Water Conservancy & Civil Engn, Guangzhou 510642, Peoples R China

[3] Cent South Univ, Sch Civil Engn, Changsha 410075, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2020年 / 260卷

基金：

美国国家科学基金会;

关键词：

Grouted-splice sleeve; Uniaxial tension test; FEM; Failure mode; STRENGTH; BEHAVIOR;

D O I：

10.1016/j.conbuildmat.2020.120441

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Sleeve grouting technology is widely employed in prefabricated building structures. However, the influence of multiple factors on the mechanical properties of grouted-sleeve splices have not been sufficiently investigated. This study attempts to investigate the failure process of the grouted-sleeve splice while loaded in uniaxial tension. A series of tensile loading tests were conducted on a group of grouted-sleeve splices. The failure mode of rebar fracture was observed in the test, and the result reveals that the grouted-sleeve was in elastic stage during the test. Three-dimension finite element analyses are carried out on the tensile loading test, considering grout plasticity and damage as well as the influence of rebar thread on interaction property of material interface. The influence of the clearance between sleeve and rebar, as well as the anchorage-diameter ratio, is investigated by finite element parametric study. The numerical results reveal that an anchorage-to-diameter ratio greater than 7 is sufficient for preventing the slippage failure at the interface between the grout and rebar. In addition, an exponential relationship exists between the anchorage length and the ultimate bearing capacity. The damage zone always initiates from the sleeve port in spite of different failure modes. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：12

共 14 条

[1]

Abaqus, 2014, AB US MAN VERS 6 14

[2]

[Anonymous], 1973, J PRESTR CONCRETE I, V18, P10

[3]

D.S.S. Corp, 2014, ABAQUS US MAN

[4]

Einea A., 1995, PCI J, V40, P82, DOI [10.15554/pcij.01011995.82.93, DOI 10.15554/PCIJ.01011995.82.93]

[5] Shear strength of beams with corrugated webs [J].