The bearing capacity of joints between walls and floor slabs in multistorey buildings

1975 ◽  
Vol 10 (4) ◽  
pp. 271-276 ◽  
Author(s):  
F. Bljuger
Keyword(s):  
Bearing Capacity ◽  
Floor Slabs

Experimental Investigation on Flexure Performance of New Steeldeck-Concrete Thermal Insulation Composite Floor Slabs

2014 ◽  
Vol 584-586 ◽  
pp. 993-996
Author(s):  
Ping Zhou Cao ◽  
De Li ◽  
Rong Zhuo Lin
Keyword(s):  
Experimental Investigation ◽  
Bearing Capacity ◽  
Thermal Insulation ◽  
Calculation Method ◽  
Experimental Results ◽  
Floor Slabs ◽  
Flexural Bearing Capacity ◽  
New Formula ◽  
Steel Deck

A new Steel deck-concrete composite floor slabs was proposed that with the effect of het preservation and insulation, and the flexure performance of the slabs has been studied. Calculation method of flexural bearing capacity was put forward. Based on comparative and analysis experimental results, it has been verified that the applicability of new formula of flexural bearing capacity of the new slabs.

BEARING CAPACITY OF RECONDITIONED ARMORED CONCRETE FLOOR SLABS

2020 ◽  
Vol 91 (5) ◽  
pp. 77-86
Author(s):  
Yu.M. BAZHENOV ◽  
◽  
G.V. NALBANDYAN ◽  
V.A. USHKOV ◽  
◽  
...  
Keyword(s):  
Bearing Capacity ◽  
High Efficiency ◽  
Epoxy Composite ◽  
Experimental Studies ◽  
Physical And Mechanical Properties ◽  
Plasma Modification ◽  
Floor Slabs ◽  
Cementitious Binder ◽  
External Reinforcement ◽  
Functional Purpose

It has been substantiated that plasma treatment of raw components is expedient to enhance the physical and mechanical properties of building mortars based on cementitious binder. The developed method of plasma modification of raw components is notable for high efficiency and usability. It has been considered how repair compositions based on cementitious binder have influence on the mechanical strength of the reconditioned and armored floor slabs simulating flat floor slabs of communication conduits. It is shown that the repair compositions based on cementitious binder restore the bearing capacity of the floor slabs by 72.1–96.5%, and when tested for breakdown the reconditioned slabs fail within the repair composition. It has been found that after external reinforcement of the reconditioned armored floor slabs with CarbonWrap Tape 230/150 their bearing capacity increases by 1.7–3.8 times. The effectiveness of epoxy composite materials for strengthening of the building constructions of various functional purpose is proved with the results of experimental studies and checking calculations of the armored floor slabs.

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.

THE CHANGE IN THE BEARING CAPACITY IS CORROSIVE-DAMAGED FLOOR SLABS DEPENDING ON THTHE CHANGE IN THE BEARING CAPACITY IS CORROSIVE-DAMAGED FLOOR SLABS DEPENDING ON THE DEPTH OF DAMAGE TO THE STRETCHED ZONE CONCRETEE DEPTH OF DAMAGE TO THE STRETCHED ZONE CONCRETE

2021 ◽  
Vol 295 (2) ◽  
pp. 27-31
Author(s):  
A.A. Minasyan ◽  
Keyword(s):  
Bearing Capacity ◽  
Bending Moment ◽  
Concrete Slabs ◽  
Sectional Area ◽  
Load Bearing ◽  
Bearing Strength ◽  
Concrete Deterioration ◽  
Reinforced Concrete Slabs ◽  
Floor Slabs ◽  
Stress Diagram

In this work, the influence of the depth of tensile concrete deterioration on the load-bearing strength and deflections of precast reinforced concrete slabs were determined experimentally. The momenta determination and measurement of deflections was carried out by loading the structure stepwise. Analysis of the results of the study indicated the following: as the plates are damaged, with the increase in the height of tensile concrete deterioration, the stress diagram gets gradually filled in the compressive sectional area and its height decreases, which can lead to the destruction of the structure. At the same time, the shear and bending moment diagram of sectional deformation gets curved. As the slab deflections increase, its load-bearing strength decreases.

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

Vestnik MGSU ◽  
2020 ◽  
pp. 31-42
Author(s):  
Alsou I. Fattakhova
Keyword(s):  
Bearing Capacity ◽  
Shear Rigidity ◽  
Horizontal Load ◽  
Design Practice ◽  
Design Standards ◽  
Existing Building ◽  
Normative Documents ◽  
Floor Slabs ◽  
Domestic Design ◽  
Load Impact

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.

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.

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