The Research of Concrete Durability Design

Abstract

Durability design of the concrete structure directly concerns structural durability, the current system of the structural durability design has not formed, merely limited to theoretical analysis condition of the environmental zoning, material preparation and structure life. This article has carried on the durability design factor analysis ,including the environment function, the durable condition monitoring design, the life design, the state control, the material design, repairable design and the mechanical design, based on this the establishment durability design method system is proposed, and the research method of establishing this system is discussed.

Effect of Attribute Reduction on Rough-Probabilistic Neural Network for Structural Damage Detection

“…Damage Detection using Attribute Importance-based Reduction Rule. On the basis of the rough set software [7], abundant attributes are shown in Table 1. K-means and SOM clusterings were also used to discretize the attributes.…”

“…The attribute importance can be represented by degree of dependencies in rough set. The degree of dependencies, γ(R,D), between decision attribute D and attribute R(R belongs to C) is described as [7]:…”

“…Discretized feature parameters were used to construct the decision table for damage identification, and decision attributes consist of the damage pattern that can be represented by a number ranging from 1 to 6. The rough set-based attribute reduction program [7] was run to reduce the decision table; hence the NDSI 1 was ascertained to be redundant and could be eliminated.…”