http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Behaviour of axially loaded RC columns strengthened by steel angles and strips
J. M. Adam,S. Ivorra,E. Giménez,J. J. Moragues,P. Miguel,C. Miragall,P. A. Calderón 국제구조공학회 2007 Steel and Composite Structures, An International J Vol.7 No.5
This paper presents the development of some numerical models based on the results of laboratory tests performed on axially loaded RC columns strengthened with steel angles and strips. These numerical models consider the nonlinearity of the building materials and the effects of the contact interfaces between different materials. The results of the finite element models accurately describe the general behaviour of the strengthened columns. This study allows engineers to assess the relative importance of the mechanisms acting on the strengthened RC columns. Constructive recommendations are also provided in this paper.
Variables affecting strain sensing function in cementitious composites with carbon fibers
F.J. Baeza,E. Zornoza,L.G. Andión,S. Ivorra,P. Garcés 사단법인 한국계산역학회 2011 Computers and Concrete, An International Journal Vol.8 No.2
In this work, cement paste samples with 1% (by cement mass) of a conductive carbon fiber admixture have been studied under uniaxial compression. Three different arrangements were used to measure the resistivity of the samples. According to the results obtained, the resistance should be measured using the four wire method in order to obtain good sensitivity and repeatability. The effect of the load value and the load rate on the fractional change of the volume resistivity has been determined. It has been observed that the gage factor (fractional change in resistance respect to strain) increases when the maximum load is increased, and the loading rate does not affect significantly this parameter. The effect of the sample ambient humidity on the material piezoresistivity has also been studied, showing that the response of the composite is highly affected by this parameter.