Tensile capacity of grouted splice sleeves

Ling, Jen Hua; Rahman, Atiqur; Ibrahim, Izni Syahrizal; Hamid, Zuhairi Abdul

doi:10.1016/j.engstruct.2015.12.023

Cited by 118 publications

(59 citation statements)

References 19 publications

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“…For example, Einea et al [26] utilized the plain round bars to design four types of grouted sleeves with different parameters and geometries, and based on the axial tension test of these specimens, they found that it is practicable to employ the grouted splice sleeve to connect prefabricated members. Ling et al [27] conducted the tensile tests of two kinds of grouted splice sleeves, namely welded bar sleeve (WBS) and tapered head sleeve (THS), to study the effect of steel bar embedment lengths and sleeve diameters on the tension capacity of sleeves. Sayadi et al [28] investigated the relationship between the interlocking mechanism and bond strength in both the elastic and inelastic regions of the grouted splice sleeve by experiments, and drew a conclusion that the bond strength will be increased if the interlocking mechanism is arranged at the elastic region.…”

Section: Introductionmentioning

confidence: 99%

Studies on Seismic Performance of Precast Concrete Columns with Grouted Splice Sleeve

Wang

et al. 2017

Applied Sciences

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Abstract:In order to validate the seismic performance of precast concrete members with steel sleeve connections, pseudo-static tests on four prefabricated columns with vertical grouted splice sleeve connections and on a control group of two cast-in-situ columns have been conducted. The test results indicated that the failure modes of the prefabricated columns and of the cast-in-situ columns are basically identical but differences exist in their crack distribution. The cast-in-situ columns mainly crack horizontally at the bottom of the column, whereas the prefabricated columns have horizontal cracks above the sleeves, and then form diagonal cracks downwards and develop many wider cracks within the range of height of 300 mm at the bottom of the column. The hysteresis curves of the prefabricated columns are plump, which demonstrates that prefabricated columns have satisfactory energy-dissipating capacity. Moreover, the stiffness degradation of the prefabricated specimens is slower than that of the cast-in-situ specimens. The ultimate displacement angle of the prefabricated columns is up to 1/104-1/54, which satisfies the requirements of the inter-story drift ratio during major earthquakes. Finally, some recommendations on practical seismic design pertinent to the precast concrete members with grouted splice sleeves are proposed.

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Section: Introductionmentioning

confidence: 99%

Studies on Seismic Performance of Precast Concrete Columns with Grouted Splice Sleeve

Wang

et al. 2017

Applied Sciences

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“…proprietary grouted sleeves) such as Lenton Interlok, NMB Splice Sleeve and TTK Tops-joint are expensive due to complex manufacturing processes and the use of high-strength materials [14]. In order to reduce the cost of the grouted sleeves, using ordinary seamless steel pipes to make grouted sleeves is considered as a solution to replace the commercial grouted sleeves [15].…”

Section: Introductionmentioning

confidence: 99%

“…However, the performance of these sleeves is not good enough for structural application. Two types of grouted sleeves, i.e., welded bar sleeve (WBS) and tapered head sleeve (THS), were proposed by Ling et al [15,17], who observed that the tensile capacity of THS is 30% higher than that of WBS due to more effective confinement provided by the tapered sleeve wall, which improves the bond strength between the spliced bar and the grout. The required embedded length of the spliced bar was found to be 8 times the rebar diameter.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical behaviour of grouted sleeve splice under uniaxial tensile loading

Lü

Huang

et al. 2019

Engineering Structures

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This paper presents an experimental and analytical study on mechanical behaviour of two kinds of new low-cost grouted sleeves processed by seamless steel pipe, i.e., grouted sleeve with wedge and grouted sleeve with wedge and thread, under uniaxial tension. In total, twenty-two rebar splice specimens with various embedded lengths, spliced bar diameters and wedge lengths are prepared and tested. The test results indicate that the performance of both grouted splices meets the requirements of ACI318 and JGJ107. The required embedded length of rebar in the splice is found to be around 6-6.4 times the spliced bar diameter due to confinement effect. The tensile capacity of the splice increases with increasing diameter of the anchorage segment of the spliced bar, and length and slope of the wedge at both ends of the sleeve. Because of the good performance of wedges threads do not significantly improve the tensile capacity of the sleeve but improve the bond strength and bearing capacity in non-wedge segment of the sleeve. The tensile capacity of the specimen is slightly lower than that of steel bar and the reduction coefficient of bearing capacity is estimated. An analytical model is proposed to predict the tensile capacity of grouted sleeves considering the effects of confinement and reduction of tensile capacity of the splices, the predictions of which are in good agreement with experimental data.

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“…The horizontal connection between adjacent precast shear wall panels may also be achieved using “wet” methods; for instance, by inserting the extended rebar at the top face of the below panel into the preformed hole at the bottom of the above panel and filling the preformed hole with fresh cementitious grout, or by sleeve‐mortar splicing together with cast‐in‐situ concrete . However, these types of assembling procedures all require some cast‐in‐situ work, which reduces the construction efficiency to some extent.…”

Section: Introductionmentioning

confidence: 99%

Experimental study and associated mechanism analysis of horizontal bolted connections involved in a precast concrete shear wall system

Sun

Qiu

Jiang

2018

Structural Concrete

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This paper is concerned about the lateral load response and associated working mechanism of a precast reinforced concrete shear wall involving horizontal connections. An assembling method is proposed using dry connection through a horizontal steel connector (H-connector) and high strength bolts. To investigate the effectiveness of such an assembling method, two identical wall-connector assembly specimens have been constructed and tested under monotonic loading and cyclic loading, respectively, while subjected to a constant vertical compression. The test results showed that the performance of the shear wall assembly was generally satisfactory in terms of ensuring the full development of the shear wall strength and ductility. To assist in the interpretation of the experimental results and enable further study on the design approach, a detailed mechanism analysis has been subsequently conducted. The stress in H-connector flange and shear force transferred through each high strength bolt has been deduced on the basis of mechanism analysis. The further sliding analysis within the bolted connections agrees well with the experimental results and therefore confirms the derived formulae for H-connector and high strength bolt.high-strength bolt, horizontal steel connector, precast shear wall, relative sliding, working mechanism 1 | INTRODUCTION Precast reinforced concrete (RC) construction is common in many parts of the world. Typically, it involves the mass production of repetitive and often standardized units, namely columns, beams, floor, and roof elements, and wall panels. Advantages of precast construction include less labor cost and shorter construction time, as well as better quality control. Precast RC structures with special detailing and treatment at the connections are also popular in seismic regions, and lessons are continuously being learned. 1 However, comparing with other precast components, precast RC shear wall is relatively under-developed, and this has become a bottleneck problem in the precast construction of medium to high rise buildings in seismic regions.As it is well known, shear wall is an essential structural member to resist lateral seismic loading in high rise buildings. 2 Due to the need of maintaining high lateral stiffness and resistance, precast RC shear wall poses particular challenges to the assembling techniques. Although there has not been a well-established approach, researchers worldwide have carried out investigations on various kinds of prefabricated RC shear walls. In general, the assembling approaches adopted in these RC shear walls can be classified broadly into two main categories, namely "dry" and "wet" methods.A series of experimental and analytical studies were performed on the unbonded posttensioned (UPT) precast concrete wall system. 3-6 The UPT system is normally Discussion on this paper must be submitted within two months of the print publication. The discussion will then be published in print, along with the authors' closure, if any, approximately nine months after the pr...

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Tensile capacity of grouted splice sleeves

Cited by 118 publications

References 19 publications

Studies on Seismic Performance of Precast Concrete Columns with Grouted Splice Sleeve

Studies on Seismic Performance of Precast Concrete Columns with Grouted Splice Sleeve

Mechanical behaviour of grouted sleeve splice under uniaxial tensile loading

Experimental study and associated mechanism analysis of horizontal bolted connections involved in a precast concrete shear wall system

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