Experimental Study on Connections of Superimposed Slabs

2014 ◽  
Vol 908 ◽  
pp. 3-7
Author(s):  
Ke Wei Ding ◽  
Fei Wu ◽  
Yun Lin Liu
Keyword(s):  
Experimental Study ◽  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Static Loading ◽  
Scientific Basis ◽  
Bending Performance ◽  
Concrete Floor ◽  
Floor Slabs ◽  
Practical Engineering ◽  
New Type

Based on the static loading experiment of four reinforced concrete floor slabs, the paper studied their loading mechanism and bending performance, such as deformation, bearing capacity and fail modes,there is much significance to provide a scientific basis for application in the field of practical engineering of the reinforced concrete floor slabs and to popular this new type of reinforced concrete floor slab.

Experimental Study on Reinforced Concrete Superposed Slabs

2012 ◽  
Vol 256-259 ◽  
pp. 684-688
Author(s):  
Yun Lin Liu ◽  
Wan Yun Yin ◽  
Gang Wang ◽  
Ke Wei Ding ◽  
Ren Cai Jin ◽  
...  
Keyword(s):  
Experimental Study ◽  
Reinforced Concrete ◽  
Environmental Protection ◽  
Static Loading ◽  
Building Materials ◽  
Bending Performance ◽  
Concrete Floor ◽  
Modern Development ◽  
Floor Slabs ◽  
Composite Wall

With the improvement of the level of architectural science and technology and the modern development of the residential industry higher requirement on building materials and environmental protection was brought forward．Based on the static loading experiment of four reinforced concrete floor slabs, two ordinary and two superimposed with connections, the paper studied their loading mechanism and bending performance, such as deformation, cracks, bearing limit and fail characteristics. Finally, proposals for superimposed slabs' design were put forward, popularization and application of new composite wall plate provides realistic basis.

scholarly journals THE SUGGESTIONS AS TO THE CALCULATION BEARING CAPACITY OF SANDWICH REINFORCED CONCRETE — FOAMED CONCRETE FLOOR SLABS

2019 ◽  
Vol 59 (1) ◽  
pp. 59-66 ◽  
Author(s):  
Oksana Lytvyniak ◽  
Myroslava Tashak
Keyword(s):  
Experimental Study ◽  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Experimental Models ◽  
Normal Concrete ◽  
Concrete Floor ◽  
Floor Slabs ◽  
Foamed Concrete ◽  
Concentrated Forces ◽  
House Building

This article presents the results of an experimental research of sandwich reinforced concrete-foamed concrete floor slabs. These floor slabs combine three different materials — normal concrete, foamed concrete and a steel reinforcement. As experimental models six beams with dimensions L × b × h = 4200 × 500 × 200mm were made. Experimental beams were established on two supports (hinged fixed support and hinged movable support). The experimental study of these beams was executed by two concentrated forces in thirds of beam’s span. Received results allowed to describe a behaviour of sandwich reinforced concrete-foamed concrete floor slabs under loading. Moreover, these researches allowed to present suggestions regarding calculations of bearing capacity of sandwich reinforced concrete-foamed concrete floor slabs. These suggestions will give an opportunity to use sandwich reinforced concrete-foamed concrete floor slabs in civil engineering and house building.

Experimental and numerical investigation on the vertical bearing behavior of discrete connected new-type precast reinforced concrete floor system

2020 ◽  
Vol 23 (11) ◽  
pp. 2276-2291
Author(s):  
Rui Pang ◽  
Yibo Zhang ◽  
Longji Dang ◽  
Lanbo Zhang ◽  
Shuting Liang
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Cover Plate ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Concrete Floor ◽  
New Type ◽  
Vertical Bearing ◽  
Floor System ◽  
Bearing Behavior

This article proposes a new type of discrete connected precast reinforced concrete diaphragm floor system that consists of precast flat slabs and slab joint connectors. An experimental investigation of discrete connected new-type precast reinforced concrete diaphragm under a vertical distributed static load was conducted, and the effect of slab joint connectors on the load-bearing capacity was evaluated. Then, a finite element analysis of discrete connected new-type precast reinforced concrete diaphragm, precast reinforced concrete floors without slab connectors, and cast-in-situ reinforced concrete floor were performed to understand their working mechanism and determine the differences in load-bearing behavior. The results indicate that the load-bearing capacity and stiffness of discrete connected new-type precast reinforced concrete diaphragm increase considerably as the hairpin and cover plate hybrid slab joint connectors can efficiently connect adjacent precast slabs and enable them to work together under a vertical load by transmitting the shear and moment forces in the orthogonal slab laying direction. The deflection of discrete connected new-type precast reinforced concrete diaphragm in orthogonal slab laying direction is mainly caused by the opening deformation of the slab joint and the rotational deformation of the precast slabs. This flexural deformation feature can provide reference for establishing the bending stiffness analytical model of discrete connected new-type precast reinforced concrete diaphragm in orthogonal slab laying direction, which is vitally important for foundation of the vertical bearing capacity and deformation calculation method. The deflection and crack distribution patterns infer that the discrete connected new-type precast reinforced concrete diaphragm processes the deformation characteristic of two-way slab floor, which can provide a basis for the theoretical analysis of discrete connected new-type precast reinforced concrete diaphragm.

Bearing Capacity of Restored and Strengthened Reinforced Concrete Floor Slabs

2020 ◽  
pp. 21-27
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
High Efficiency ◽  
Raw Materials ◽  
Experimental Studies ◽  
Building Structures ◽  
Concrete Floor ◽  
Reinforced Concrete Slabs ◽  
Floor Slabs ◽  
External Reinforcement

The influence of various repair compositions on the bearing capacity of restored and strengthened floor slabs modeling flat reinforced concrete floor slabs of communication collectors is considered. Industrial brands of repair compositions based on cement binder, repair compositions containing quartz sand and mixing water after treatment with low-temperature non-equilibrium plasma, and materials for external reinforcement of building structures were used. It is shown that industrial repair compositions based on cement and repair compositions based on modified raw materials restore the bearing capacity of model floor slabs in almost the same way. In this case, the destruction of floor slabs occurs on the repair composition. It was established that the external reinforcement of reinforced concrete slabs restored with repair compositions using carbon mesh or tape significantly increases their bearing capacity. The high efficiency of the use of epoxy polymer composite materials for the repair and strengthening of reinforced concrete structures of various functional purposes is confirmed by the results of verification calculations of the initial and model floor slabs, as well as conducted experimental studies.

About the reasons of formation of cracks in monolithic reinforced concrete floor slabs

2020 ◽  
pp. 70-77
Author(s):  
Lidiya Kosheleva ◽  
◽  
Sergey Mijusov ◽  
Sergey Kletenkov ◽  
Daniil Ryazantsev ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Concrete Floor ◽  
Floor Slabs ◽  
Formation Of Cracks

Experimental Study about Bearing Capacity and Deformation on Concrete Composite Slabs with Additional Bars

2013 ◽  
Vol 482 ◽  
pp. 7-10
Author(s):  
Jian Hua Cui ◽  
Chuan Yang Weng ◽  
Yun Lin Liu
Keyword(s):  
Experimental Study ◽  
Bearing Capacity ◽  
Failure Mode ◽  
Static Loading ◽  
Flexural Behavior ◽  
Flexural Properties ◽  
Effective Height ◽  
Composite Slabs

Through the experiments of four concrete composite slabs under static loading to compare their flexural properties (deflection, bearing capacity, failure mode), this paper discusses the influence of composite slabs flexural behavior on different length of additional bars and sectional effective height. The results showed that they will improve the bearing capacity effectively by reasonably increasing the sectional effective height and controlling the length of additional bars.

Timber steel-fibre-reinforced concrete floor slabs subjected to fire

2017 ◽  
Vol 76 (1) ◽  
pp. 201-212 ◽  
Author(s):  
Jan Ekr ◽  
Eva Caldova ◽  
Petr Vymlatil ◽  
Frantisek Wald ◽  
Anna Kuklikova
Keyword(s):  
Reinforced Concrete ◽  
Steel Fibre ◽  
Fibre Reinforced Concrete ◽  
Concrete Floor ◽  
Steel Fibre Reinforced Concrete ◽  
Floor Slabs

Experimental Study on Seismic Performance of the Reinforced Concrete Grid-Mesh Frame Wall

2013 ◽  
Vol 680 ◽  
pp. 234-238
Author(s):  
Jin Li Qiao ◽  
Wen Ling Tian ◽  
Ming Jie Zhou ◽  
Fang Lu Jiang ◽  
Kun Zhao
Keyword(s):  
Experimental Study ◽  
Reinforced Concrete ◽  
Energy Dissipation ◽  
Bearing Capacity ◽  
Seismic Performance ◽  
Seismic Energy ◽  
Width Ratio ◽  
Filling Material ◽  
Energy Dissipation Capacity ◽  
Grid Mesh

In order to validate the seismic performance of reinforced concrete grid-mesh frame wall , four grid frame walls in half size is made with different height-width ratios and different grid forms in the paper. Two of them are filling with cast-in-place plaster as filling material. According to the experimental results of these four walls subjected to horizontal reciprocating loads, we know that the grid-mesh frame wall's breaking form are in stages and multiple modes, and the main influencing factors are height-width ratio and grid form, what's more, with cast-in-place plaster as fill material, could not only improve the level of the wall bearing capacity and stiffness, but also improve the ductility and seismic energy dissipation capacity.

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