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Study on the Performance of RPC Two-way Ribbed Slab

Author: MaZuoChao
Tutor: HuangZhengYu
School: Hunan University
Course: Structural Engineering
Keywords: Reactive Powder Concrete Two-way slabs Bearing capacity Deformation properties Finite Element
CLC: TU375
Type: Master's thesis
Year: 2009
Downloads: 24
Quote: 1
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Abstract


With the development of contemporary architecture, it is the height of the building, span and durability requirements and continuously improve ordinary concrete structure has become increasingly incapable of such a request. The new ultra-high performance concrete RPC (Reactive Powder Concrete) has the characteristics of high strength, high toughness, high durability, can effectively improve the the member bearing capacity, reduce the cross-sectional size and improve the durability of the components has broad application prospects. RPC concrete and high-strength steel components member can give full play to the advantages of both, and can save steel to reduce weight. For RPC mainly concentrated in the materials section, little mechanical properties of the RPC component, although the RPC concrete with superior performance, but in the actual project is seldom used. Therefore, the RPC materials and components is necessary experimental and theoretical studies. Board is one of the basic building blocks of the structure, RPC SLABS Experimental study few and far between, we completed force Experimental study of six RPC two-way ribbed panels and a concrete ribbed plate, The contents and conclusions are as follows: (1) observation of the whole process of loading the RPC way slabs and concrete board can be seen that the RPC way slabs with high cracking load cracking stage small crack width and stiffness, RPC bidirectional durability and resistance to deformation of the plate better than ordinary concrete slab. Bidirectional board failure process observed, we can see that the RPC bidirectional plate punching shear capacity higher than ordinary concrete slab. (2) load - deflection and load - strain curve measured by the RPC way slabs and concrete board can be seen RPC concrete can work in conjunction with high-strength reinforced the RPC board before the destruction of obvious signs of deformation and failure of . The compression zone RPC concrete large plastic deformation before failure. (3) using existing two-way flexural bearing capacity calculation method of flexural capacities for RPC way slabs, calculation results show that the elastic coefficient method and limit equilibrium method can calculate the the RPC way slabs bearing capacity, elasticity coefficient method bearing capacity safety factor, the limit equilibrium method better results close to the experimental results. (4) In this paper, the United States, Europe and China's specification is calculated on the the RPC test plate punching shear carrying capacity are analyzed and compared, the results show that mixed with an appropriate amount of steel fiber RPC board anti-punching capacity has improved significantly. (5) with the help of the finite element software RPC way slabs numerical analysis results show that within a certain range, ANSYS to simulate the cracking process of the RPC way slabs, deflection change and stress development and distribution. This study show that the The RPC board has high carrying capacity, deformation characteristics, suitable for large cross-thin structure, with broad application prospects.

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CLC: > Industrial Technology > Building Science > Building structure > Concrete structure,reinforced concrete structure > Reinforced concrete structures
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