Shear behavior of shear stud groups in precast concrete decks

Wang, Yu Hang; Yu, Jie; Liu, Jie Peng; Chen, Y. Frank

doi:10.1016/j.engstruct.2019.02.002

Cited by 42 publications

(19 citation statements)

References 11 publications

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“…Жесткости рамки и плиты значительно больше жесткости гибких упоров. Пренебрегая этими деформациями, получаем выражение (6). В исследовании [10] был проведен подобный эксперимент в программном комплексе Ansys, позволяющем моделировать реальную работу соединения.…”

Section: рис 1 расчетная схема рамкиunclassified

“…В зарубежной литературе имеется раздел расчетов гибких упоров комбинированных перекрытий с учетом действия горизонтальных нагрузок [4]. Как правило, это технические условия производителей, основанные на исследова-ниях местных ученых [5][6][7]. Однако нормативные документы, применяемые за рубежом, отличаются от отечественных, поэтому отечественным производителям приходится доказывать допустимость применения тех или иных конструктивных решений.…”

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Determination of the Movements of the Combined Flooring Using Profiled Flooring From Horizontal Loads

Efimov¹,

Gimranov²,

Fattahova

et al. 2021

Bulletin of Belgorod State Technological University Named After. V. G. Shukhov

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Combined steel-reinforced concrete floors using profiled flooring are the most common solution in buildings with a steel frame. Flexible stops ensure the joint work of the frame and the flooring disks. Deformations of the combined flooring, and therefore of the frame in the horizontal plane, can occur due to the possible appearance of uneven force effects that cause a shift. At the same time, the magnitude of these deformations is influenced by both the level of force influences and the shear stiffness of the flooring disk, as well as the malleability of the flexible stops connecting the latter to the supporting frame. The paper proposes a method for determining the deformations of the flooring disk and the supporting frame from a horizontal load. The problem is considered in which a square floor slab is based on a contour on the crossbars of the frame, but its fixing with flexible stops is provided on two parallel sides. A formula for determining the movements of the frame from the horizontal load is proposed. The displacement of the flooring disk is analytically determined, it is noted how the malleability of flexible stops affects the determination of the final result. Using the example of a numerical experiment, the possibility of using the proposed method is demonstrated. The movement in the flooring disks will allow to assess the rigidity of the frame from horizontal loads without focusing on the deformation of each component of the steel-reinforced concrete slab. In addition, it will help to use materials and resources more efficiently by optimizing design solutions.

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Section: рис 1 расчетная схема рамкиunclassified

unclassified

Determination of the Movements of the Combined Flooring Using Profiled Flooring From Horizontal Loads

Efimov¹,

Gimranov²,

Fattahova

et al. 2021

Bulletin of Belgorod State Technological University Named After. V. G. Shukhov

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“…В данной работе описаны характеристики, которые влияют на степень податливости перекрытия. Учитывая интерес к работе именно гибких анкеров и их податливости, были изучены статьи [4][5][6], посвященные работе одиночных стад-болтов и их групп при различных условиях закрепления и самой геометрии болтов. Однако в вышеупомянутых статьях не было четких указаний по поведению болтов при динамических и циклических нагрузках, которые ужесточают требования к надежности соединений в перекрытиях.…”

Section: материалы и методыunclassified

Impact of horizontal loads on the work of stud bolts in combined floor slabs

Fattakhova

2020

Vestnik MGSU

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Introduction. Combined slabs are often applied in civil buildings. Such methods of slab calculation are described in detail in internal and international normative documents. The work of the slabs under vertical loads is studied minutely. However, additional shear forces in stud bolts from horizontal load are not considered in domestic design practice. The usage of profiled sheeting as the main reinforcement limits the application of international foreign methods is limited by. Besides that, the profiled sheeting types used abroad differ from domestic ones. Materials and methods. The paper studies the horizontal load impact on the flexible anchors in combined slabs using profiled sheeting. The article considered an example of an existing building structure modelled using a LIRA-SAPR software system. Results. The results of numerical experiments were described in terms of wind load and temperature effect on the structure. The values of stud bolt forces from the applied loads were obtained for various working conditions. Further, these forces were compared with the ones from the vertical loads and bearing capacity of a single stud bolt. The bearing capacity determining issue was separately considered according to domestic and foreign design standards as well as stud manufacturers’ regulatory documents. As a result, different bearing capacity values were obtained. Possible reasons for the large discrepancy of the values are given based on calculation formulae taken from documents for determining a load that a single bolt is capable of bearing. Conclusions. A necessity of further studying the issue of providing shear rigidity of stud bolts under horizontal loads was revealed. The distribution of forces in the flexible anchors is affected by the arrangement of floor beams and ties.

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“…After placing the pockets around shear connectors on the steel girders and grouting the shear pockets, the connection between steel girders and concrete decks is completed. The usual approach is to use non-shrinkable mortar and stud shear connectors, as shown in Figure 1 [4].…”

Section: Introductionmentioning

confidence: 99%

Static and Fatigue Behavior of Rubber-Sleeved Stud Shear Connectors as Part of Field-Cast Ultra-High Performance Concrete Connections

Zhang

2020

Materials

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Field-cast ultra-high performance concrete (UHPC) connections are an innovative and prospective solution for combining full-depth precast concrete decks and steel girders. However, previous studies show that the slip capacity of stud shear connectors embedded in UHPC cannot meet the requirements for ductile connectors by Eurocode 4, which can reduce the resistance of steel and concrete composite members. In this study, the rubber-sleeved stud shear connector, which is a composite of ordinary stud and rubber sleeve, was adopted for the field-cast UHPC connections. Push-out tests were conducted to investigate the static and fatigue behavior of the rubber-sleeved stud shear connector as part of field-cast UHPC connections. Results of static tests showed that the rubber-sleeved stud shear connector has sufficient deformation capacity and its slip capacity is 1.5 times that of the ordinary stud shear connector. Compared to ordinary stud shear connectors, UHPC with high strength and stiffness has a relatively small effect on improving the shear strength and stiffness of rubber-sleeve stud shear connectors. Results of fatigue tests showed that the rubber-sleeved stud shear connector in UHPC has similar fatigue behavior to that in normal strength concrete. Though UHPC improves the restraint to the stud deformation, the influence of rubber sleeves is still decisive in determining the fatigue behavior of rubber-sleeve stud shear connectors. In addition, based on the results of strain gauges at stud roots, it was found that the crack initiation process consumes a small proportion of the fatigue life of rubber-sleeved stud shear connectors, which is about 5%.

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Shear behavior of shear stud groups in precast concrete decks

Cited by 42 publications

References 11 publications

Determination of the Movements of the Combined Flooring Using Profiled Flooring From Horizontal Loads

Determination of the Movements of the Combined Flooring Using Profiled Flooring From Horizontal Loads

Impact of horizontal loads on the work of stud bolts in combined floor slabs

Static and Fatigue Behavior of Rubber-Sleeved Stud Shear Connectors as Part of Field-Cast Ultra-High Performance Concrete Connections

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