TIMBER-CONCRETE COMPOSITE-A HIGH-EFFICIENT AND SUSTAINABLE CONSTRUCTION METHOD

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Klaus Holschemacher
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
High Efficiency ◽  
Concrete Slab ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Shear Connectors ◽  
Reinforced Concrete Slabs ◽  
High Efficient ◽  
Timber Beams

Timber-concrete composite (TCC) is a well-tried building method for construction of sustainable and robust floor systems with high load-bearing capacity. TCC sections consist of timber beams linked by shear connectors with a plain or reinforced concrete slab. Usually, by the shear connectors only flexible bond between the timber beams and the concrete slab may be provided. Nevertheless, TCC slabs have high flexural stiffness and appropriate load-bearing capacity enabling their application in residential and office buildings, and even in bridge construction. The paper reports state-of-the-art and recent developments in design and construction of TCC slabs. Especially, in the context of revaluation and strengthening of existing timber-beam ceilings it is a widely accepted technique today. But also, in design of new buildings, TCC slabs are an advantageous solution because of their reduced environmental impact in contrast to traditional reinforced concrete slabs. By many examples in recent design practice the high efficiency of TCC systems was proved.

scholarly journals An Analysis of the Load-Bearing Capacity of Timber-Concrete Composite Beams with Profiled Sheeting

2017 ◽  
Vol 27 (4) ◽  
pp. 143-156 ◽  
Author(s):  
Maciej Szumigała ◽  
Ewa Szumigała ◽  
Łukasz Polus
Keyword(s):  
Numerical Analysis ◽  
Bearing Capacity ◽  
Concrete Slab ◽  
Composite Beams ◽  
Concrete Slabs ◽  
Timber Beam ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Shear Connectors ◽  
Timber Beams

Abstract This paper presents an analysis of timber-concrete composite beams. Said composite beams consist of rectangular timber beams and concrete slabs poured into the steel sheeting. The concrete slab is connected with the timber beam using special shear connectors. The authors of this article are trying to patent these connectors. The article contains results from a numerical analysis. It is demonstrated that the type of steel sheeting used as a lost formwork has an influence on the load-bearing capacity and stiffness of the timber-concrete composite beams.

Narrow Reinforced Concrete Slabs after their Flexural Destruction

2014 ◽  
Vol 969 ◽  
pp. 271-275 ◽  
Author(s):  
Mirosław Wieczorek
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
The Self ◽  
Concrete Slabs ◽  
Building Structures ◽  
Reinforcing Steel ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Horizontal Shift ◽  
Reinforced Concrete Slabs

In the course of the exploitation of building structures frequently situations turn up, in which the structure is not adequately used (it may, for instance, be exposed to considerably greater loads than previously been intended). In the state of an unforeseen overload of the structure, essential reserves of their load-bearing capacity may be disclosed in the case of the self-acting work as a flexible strand. The paper presents the results of investigations concerning the influence of the parameters of reinforcing steel on the mechanism of the destruction of six single-span models of narrow reinforced concrete slabs, in which a horizontal shift of the supports was not possible. The tests were carried out on narrow slabs with the dimensions 3860×480×100 mm. The results of the tests were compared with analytical calculations.

Automated assessment of reinforced concrete slabs using a pseudo-lower bound method: Case studies

2019 ◽  
Vol 26 (4) ◽  
pp. 146-156
Author(s):  
Michele De Filippo ◽  
J S Kuang
Keyword(s):  
Reinforced Concrete ◽  
Lower Bound ◽  
Bearing Capacity ◽  
Case Studies ◽  
Great Accuracy ◽  
Concrete Slabs ◽  
Collapse Mechanism ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Reinforced Concrete Slabs

Despite the widespread usage of reinforced concrete slabs in construction industry, nowadays disasters due to sudden failure of such structures still occur. Assessment analyses of reinforced concrete slabs can nowadays be performed with a multitude of techniques, but many such methods are computationally too onerous, non-automated or overconservative. This paper proposes applications of a novel pseudo-lower bound method for evaluating the load-bearing capacity of slabs and estimating the most critical collapse mechanism. Such applications compare the results of analytical solutions, experiments and other bound methods with those obtained with the proposed pseudo-lower bound method. The case studies show evidence that great accuracy is achieved in terms of both estimation of load-bearing capacity and detection of collapse mechanism. The analysed case studies include different geometries, boundary conditions, loads and reinforcement layouts. Such numerical applications are presented in order to benchmark the accuracy and usefulness of the method.

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.

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