Numerical modelling of in-plane restrained concrete two-way slabs subjected to fire

Wang, Yong; Wang, Gongchen; Huang, Zhaohui; Li, Lingzhi; Bu, Yixiang; Zhong, Bo; Zhang, Yajun; Ma, Shangjun

doi:10.1016/j.firesaf.2021.103307

Cited by 7 publications

(7 citation statements)

References 18 publications

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Section: Methodsmentioning

confidence: 99%

Computer Programming for Analysis and Design of Edge Supported Rectangular Two-Way Solid Slab by Es En 1992-1-1:2015

Basha¹

2022

Preprint

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This study's main target was to analyze and design rectangular edges supported two ways solid slabs by using ES EN 1992-1-1:2015. Slab design is often carried out either manually or with the use of design and analytic software. The researcher sees that some software cannot accept some countries' standard codes. For example, currently in Ethiopia analysis and design of two-way solid slab is done using readily available Excel sheet template. But working with this might have many problems, firstly the structure that is already analyzed by SAP or SAFE or any other international software application that uses international codes but which cannot design structure using ES EN 1992; for instant euro codes and designed by excel sheet can create failure and uneconomical analysis and design result. In this paper, the slab is designed and analyzed based on the chosen concrete grade, chosen reinforcement bar diameter, chosen steel grade for design and analysis of slabs calculations like load, moment, shear, and deflection checking using the moment coefficient method for analysis and design and Microsoft Visual Basic 2010 for coding. All input values are given by the International Standard units and are also used to represent output values. Using manual calculations delays time and mostly the result is not correct. But using this Computer program can increase computation accuracy and save time. The procedure the researcher followed is, first the manual calculation has been done and then SADSE2021 has been done. The result is that both are 99.9% identical, and the disadvantage of this method is that it cannot be used to determine the detailed drawing.

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Section: Methodsmentioning

confidence: 99%

Computer Programming for Analysis and Design of Edge Supported Rectangular Two-Way Solid Slab by Es En 1992-1-1:2015

Basha¹

2022

Preprint

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“…At present, many scholars have deduced some calculation methods according to their proposed film effect generation mechanism, but there are some problems such as complex calculation process and too many assumptions [4][5][6][7]16,17]. The author's research group has also conducted in-depth research in this regard: Dong Yuli [18,19] solved the tensile membrane effect of concrete slab by using the deformation and decomposition principle and gave the calculation formula of the ultimate bearing capacity of rectangular and square two-way slabs without horizontal constraints.…”

Section: Introductionmentioning

confidence: 99%

Limit Carrying Capacity Calculation of Two-Way Slabs with Three Simply Supported Edges and One Clamped Edge under Fire

Zhu

Dong

et al. 2022

Applied Sciences

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Fire-resistance experiments were conducted on two full-scale two-way reinforced concrete slabs with three simply supported edges and one clamped edge. This paper presents the design of the furnace, specimens and clamped-end device, the test plan, and the measuring contents and methods. The cracking and failure characteristics of the tested two-way reinforced concrete slabs were introduced. The temperature field distribution of the concrete and steel in the direction of the section thickness, out-of-plane deflections, in-plane deflections, and angle of the slab edges of the two-way concrete slab under fire conditions were analyzed. Cracks form on the slab surface, which is shaped similar to the bottom of a shallow bowl, with two transverse cracks in the mid-area of the medially clamped side and intensively annular diagonal cracks on the corner side. There were several main transverse cracks in the central area of the slab surface. The results indicate that there was a significant decrease in frequency under fire conditions. Relations between the frequency and the central vertical deflection of the two slabs were analyzed by the regression method. This research generates valuable test data that can be used to validate the numerical models developed by fellow researchers in the field of structural fire engineering. Based on the plate balance method and energy method, calculation formula of the limit carrying capacity calculation formula of reinforced concrete two-way slabs with four different boundaries under fire are given, which are simply supported on three sides and clamped on one side. The influence of membrane effect under large deflection is considered in the formula, and the calculated results are in good agreement with the experimental results.

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“…This is called Reinforced Concrete. Reinforced concrete provides plenty of advantages to the users such as high compressive strength, high tensile strength, good fire and weather resistance, flexibility in molding them into countless shapes and sizes and low maintenance cost [12,19,22,23]. However, it is not without its disadvantages such as the requirement of mixing, casting and curing; all of which would affect the concrete strength, the high cost of the forms to mold the concrete and the its tensile strength is one-tenth of its compressive strength [12].…”

Section: Introductionmentioning

confidence: 99%

“…The slabs can be simply supported or even continuously span over more than one supports [6,9,21]. Rectangular slabs that are supported only on two sides opposite of each other by walls or beams where the loads are uniformly distributed along the direction that is parallel to the supports [22,14]. If the slab is square and is restrained similarly on all four sides, the load is distributed equally in both directions [6,14].…”

Section: Introductionmentioning

confidence: 99%

“…Supported ES EN 1992-1-1:2015: For Mild exposure = 20 mm, For Moderate exposure = 30 mm, Effective depth = depth of slab -clear cover -1/2 diameter of bar, The Effective span of the slab shall be lesser than the 2, L = clear span + d (effective depth). L = Centre to center distance between the support[22,14,15,21];(d)Calculate the factored loads and Determine moment coefficients;(e) Calculation of shear force and bending moments: the entire factored (design) loads are to be determined by adding the estimated loading of the slab, load of the ground finish, given or assumed live loads, etc. ES EN 1992-1-1:2015 after multiplying each of them with the respective partial safety factors.…”

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confidence: 99%

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Computer Programming for Analysis and Design of Edge Supported Rectangular Two-Way Solid Slab by Es En 1992-1-1:2015

Chawaka¹

2022

Preprint

View full text Add to dashboard Cite

This study’s main target was to analyze and design rectangular edges supported in two ways 1 solid slabs by using ES EN 1992-1-1:2015. Slab design is often carried out either manually or with 2 the use of design and analytic software. The researcher sees that some software cannot accept some 3 countries’ standard codes. For example, currently in Ethiopia analysis and design of two-way solid 4 the slab is done using a readily available Excel sheet template. But working with this might have many 5 problems, firstly the structure that is already analyzed by SAP or SAFE or any other international 6 a software application that uses international codes but which cannot design structure using ES EN 7 1992; for instant euro codes and designed by excel sheet can create failure and uneconomical analysis 8 and design result. In this paper, the slab is designed and analyzed based on the chosen concrete grade, 9 chosen reinforcement bar diameter, chosen steel grade for design and analysis of slabs calculations 10 like load, moment, shear, and deflection checking using the moment coefficient method for analysis 11 and design and Microsoft Visual Basic 2010 for coding. All input values are given by the International 12 Standard units are also used to represent output values. Using manual calculations delays time 13 and mostly the result is not correct. But using this Computer program can increase computation 14 accuracy and save time. The procedure the researcher followed is, first the manual calculation has 15 been done and then SADSE2021 has been done. The result is that both are 99.9 percent identical, and 16 the disadvantage of this method is that it cannot be used to determine the detailed drawing.

show abstract

Numerical modelling of in-plane restrained concrete two-way slabs subjected to fire

Cited by 7 publications

References 18 publications

Computer Programming for Analysis and Design of Edge Supported Rectangular Two-Way Solid Slab by Es En 1992-1-1:2015

Computer Programming for Analysis and Design of Edge Supported Rectangular Two-Way Solid Slab by Es En 1992-1-1:2015

Limit Carrying Capacity Calculation of Two-Way Slabs with Three Simply Supported Edges and One Clamped Edge under Fire

Computer Programming for Analysis and Design of Edge Supported Rectangular Two-Way Solid Slab by Es En 1992-1-1:2015

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