Finite Element Analysis of Mass Concrete Temperature Crack Mechanism

2012 ◽  
Vol 594-597 ◽  
pp. 713-716
Author(s):  
Zhi Hua Xu ◽  
Da Wei Sun ◽  
Hai Xiao
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Temperature Stress ◽  
Concrete Structure ◽  
Large Scale ◽  
Mass Concrete ◽  
Continuous Development ◽  
Element Analysis ◽  
Concrete Temperature ◽  
Temperature Crack

With the large-scale continuous development of economic, mass concrete structure plays an important role in the architecture construction field. This paper simulates the mechanism of temperature crack which is caused by temperature stress due to the change of temperature, introduces the generative principle of temperature crack simply and could provide references for control the temperature crack effectively.

Numerical Simulation Analysis on Mass Concrete Thermal Stress

2012 ◽  
Vol 204-208 ◽  
pp. 4396-4399 ◽  
Author(s):  
Guo Liang Tian ◽  
Yin Wang
Keyword(s):  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Thermal Stress ◽  
Large Scale ◽  
Simulation Analysis ◽  
Hydration Heat ◽  
Mass Concrete ◽  
Concrete Construction ◽  
Element Analysis

Cement hydration heat temperature of the concrete could result thermal stress. Which is an important reason for the concrete structure’ cracks. The cracks could reduce the structure’ durability and structural stability. A spatial finite element model analysis on a mass concrete foundation board of a project was established using large-scale finite element analysis software. Temperature stress finite element analysis was carried on model. Numerical simulation analyzed the hydration heat of mass concrete construction phase and calculated the mass concrete’ temperature and stress distribution. Results of numerical simulation of crack control had certain guiding significance to mass concrete construction.

scholarly journals Experimental Study on Mechanical Property of Stiffening-ribbed-hollowpipe Reinforced Concrete Girderless Floor with Four Clamped Edges Supported

2013 ◽  
Vol 7 (1) ◽  
pp. 170-178 ◽  
Author(s):  
Weijun Yang ◽  
Yongda Yang ◽  
Jihua Yin ◽  
Yushuang Ni
Keyword(s):  
Mechanical Property ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Reinforced Concrete ◽  
Large Scale ◽  
Load Test ◽  
Static Load Test ◽  
Loading Test ◽  
Element Analysis ◽  
Clamped Edges

In order to study the basic mechanical property of cast-in-place stiffening-ribbed-hollow-pipe reinforced concrete girderless floor, and similarities and differences of the structural performance compared with traditional floor, we carried out the destructive stage loading test on the short-term load test of floor model with four clamped edges supported in large scale, and conducted the long-term static load test. Also, the thesis conducted finite element analysis in virtue of ANSYS software for solid slab floor, stiffening-ribbed-hollow-pipe floor and tubular floor. The experiment indicates that the developing process of cracks, distribution and failure mode in stiffening-ribbed-hollow-pipe floor are similar to that of solid girderless floor, and that this kind of floor has higher bearing capacity and better plastic deformation capacity. The finite element analysis manifests that, compared with solid slab floor, the deadweight of stiffening-ribbed-hollow-pipe floor decreases on greater level while deformation increases little, and that compared with tubular floor, this floor has higher rigidity. So stiffening-ribbed-hollow-pipe reinforced concrete girderless floor is particularly suitable for long-span and large-bay building structure.

scholarly journals PREDICTION OF HORIZONTAL DEFORMATION OF LARGE SCALE SEAWALL BY ELASTO-VISCOPLASTIC FINITE ELEMENT ANALYSIS

2012 ◽  
Vol 68 (2) ◽  
pp. 224-238
Author(s):  
Takeshi MURAKAMI ◽  
Yuji NIIHARA ◽  
Takemine YAMADA ◽  
Shintaro OHNO ◽  
Takatoshi NOGUCHI ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Large Scale ◽  
Horizontal Deformation ◽  
Element Analysis

Thermal compensation using the hybrid metrology approach compared to traditional scaling

2017 ◽  
Vol 232 (13) ◽  
pp. 2364-2374
Author(s):  
David Ross-Pinnock ◽  
Glen Mullineux
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Thermal Expansion ◽  
Temperature Measurement ◽  
Large Scale ◽  
Element Analysis ◽  
Linear Temperature ◽  
Temperature Distributions ◽  
Finite Element Analysis Simulation ◽  
Uniform Scaling

Control of temperature in large-scale manufacturing environments is not always practical or economical, introducing thermal effects including variation in ambient refractive index and thermal expansion. Thermal expansion is one of the largest contributors to measurement uncertainty; however, temperature distributions are not widely measured. Uncertainties can also be introduced in scaling to standard temperature. For more complex temperature distributions with non-linear temperature gradients, uniform scaling is unrealistic. Deformations have been measured photogrammetrically in two thermally challenging scenarios with localised heating. Extended temperature measurement has been tested with finite element analysis to assess a compensation methodology for coordinate measurement. This has been compared to commonly used uniform scaling and has outperformed this with a highly simplified finite element analysis simulation in scaling a number of coordinates at once. This work highlighted the need for focus on reproducible temperature measurement for dimensional measurement in non-standard environments.

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