Mechanical Properties of HPC and Numerical Simulation of Mine Shaft under 3D Load

Abstract:

The mechanical properties of high-strength concrete was studied in the laboratory, and obtained a high strength concrete uniaxial compressive strength changes with curing period, found that low temperature curing C100 Poisson's ratio of concrete is 0.24, and elastic modulus reached about 52.5GPa. The test results are applied to the numerical calculation, established a separate type reinforced concrete wall, and the multiaxial loading the stress state is simulated, the research shows that it is applied to C100 reinforced concrete shaft lining under its own gravity and the surrounding soil earth pressure, the maximum effective stress are respectively 25MPa , and effective strain is 4E-4mm, structure of shaft wall failure caused by shear wall structure. Under the three state of compression, the strength of concrete is improved.

• Periodical: Applied Mechanics and Materials (Volume 777)
• Pages: 48-51
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.777.48
• Online since: July 2015
• Authors: Hui Cao*, Lin Lin Jiang
• Keywords: HPC, Mine Shaft, Numerical Simulation, Separate Reinforced Concrete Model, Stress Distribution

References

[1] Feng Naiqian: High Performance Concrete, edtied by Architecture & Building Press, Beijing, P.R. C(1996).

[2] Wang Haide: High Performance Concrete Design and Quality Control Computerized. Tsinghua University, Beijing(1996).

[3] Regourd M M: Microstructure of High Performance Concrete, E & FN SPON(1992).

[4] Soutsos M N，Domone P L J: Design of High Strength Concrete Mixes with Normal Weight Aggregates. Proc. of the 3rd International Symposium on Utilization of High Strength Concrete, Lillehammer, Norway.

[5] Carbonari B T et al: A Synthetic Approach for the Experimental Optimization of High Strength Concrete. 4th International Symposium on Utilization of HSC/HPC, Paris(1996).