Journal of Structural and Construction Engineering (transactions of Aij) 

About: Journal of Structural and Construction Engineering (transactions of Aij) is an academic journal published by Architectural Institute of Japan. The journal publishes majorly in the area(s): Beam (structure) & Buckling. It has an ISSN identifier of 1340-4202. Over the lifetime, 5786 publications have been published receiving 13440 citations. The journal is also known as: Journal of structural and construction engineering & Journal of structural and construction engineering : transactions of AIJ.

Classifications of structural types and damage patterns of buildings for earthquake field investigation

Abstract: A lot of field investigations for damage to buildings are carried out after large earthquakes. In concordance with the variety of investigations, the building damage descriptions are really incoherent because a well-coordinated damage scale has not been prepared yet. This paper proposed a new chart for describing the building damage patterns by seismic vulnerability so as to help investigators to classify building damaged without a gross error. Furthermore, various damage scales defined by the organizations concerned can be compared with each other by using this chart as a common scale. Moreover, we proposed new damage vulnerability functions of various kinds of structure, the functions which can depict the relation between ground motion severity and damage degree of building.

Mechanical properties of high strength concrete at high temperatures

Abstract: The effects of high temperature on the mechanical properties of high strength concrete (HSC) have been studied experimentally at various temperatures that covered the 20°C and the 100 to 800°C temperature range at 100°C increments. Concrete specimens of HSC were tested under compression at ages about 3, 6 and 12 months. The stress-strain curve of HSC under compression test exhibits brittle properties below 500°C, and ductile properties above 500°C. The compressive strength decreases to about 60-70% of the strength of room temperature at 100°C, increases up to about 80-90% of the strength of the room temperature at 200°C and gradually decreases with further increase of temperature. From these test results (including Ref.9 test results), mathematical expressions of the compressive strength, the strain at compressive strength, the stress-strain relationship and the modulus of elasticity were proposed. The comparatively good correlation between predicted and experimental results indicates the adequacy of the expression of stress-strain relationship.

Relationship between compressive strength and modulus of elasticity of high strength concrete

Abstract: Modulus of elasticity of concrete is frequently expressed in terms of compressive strength. While many empirical equations for predicting modulus of elasticity have been proposed by many investigators, few equations are considered to cover the whole data. The reason is considered to be that the mechanical properties of concrete are highly dependent on the properties and proportions of binders and aggregates. This investigation was carried out as a part of the work of the Research Committee on High-strength Concrete of the Architectural Institute of Japan (AlJ) and National Research and Development Project, called New RC Project, sponsored by the Ministry of Construction. More than 3,000 data, obtained by many investigators using various materials, on the relationship between compressive strengths and modulus of elasticity were collected and analyzed statistically. The compressive strength of investigated concretes ranged from 20 to 160 MPa. As a result, a practical and universal equation is proposed, which takes into consideration types of coarse aggregates and types of mineral additions.