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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Showing 1-5 of 22 Abstracts search results
Document:
SP176-15
Date:
October 1, 1998
Author(s):
H. Noguchi, S. Fujii and M. Teraoka
Publication:
Symposium Papers
Volume:
176
Abstract:
The state-of-the-art on recent experimental research in Japan on beam-column joints with high-strength materials subjected to seismic loads is introduced. Previous experimental studies on beam-column joints in reinforced concrete frames for seismic resistance is outlined for the shear strength of beam-column joints and the deformation characteristics of subassemblages including beam-column joints. Analytical research using FEM microscopic models and macroscopic models have been done in order to deepen the understanding of the experimental results and to investigate the shear resisting mechanisms of the joints with high-strength materials. Recent analytical research on joints using high-strength materials is introduced.
DOI:
10.14359/5906
SP176-16
R. Park, H. Tanaka and X.2. Xin
The changes to the seismic design provisions of the revised New Zealand concrete design standard, NZS 3101:1995, for beam-column joints to allow for high strength concrete are outlined. The changes include bond equations for bars passing through beam-column joints to take into account concrete strength and other factors, and new shear equations for the design of horizontal and vertical shear reinforcement. The results of simulated seismic load tests conducted on one-way interior beam-column joints constructed of normal and high strength concrete with concrete compressive cylinder strengths ranging between 31 and 61 MPa are also briefly described. The changes to the revised standard and the tests indicate that there are advantages in using high strength concrete in moment resisting frames.
10.14359/5907
SP176-17
F. Watanabe and T. Kabeyasawa
The use of high strength concrete has been increasing in the construction of high-rise earthquake resistant buildings in Japan. However, design guidelines have not been fully developed for reinforced concrete buildings with concrete compressive strengths higher than 35.3 MPa. Therefore the Japanese Building Research Institute initiated “New RC Project” aimed at establishing design guidelines for buildings constructed using high strength concrete. The project started in 1988 and extensive research has been conducted at several research institutes and universities. Shear tests on beams and columns with high strength concrete were also conducted as part of program to establish the shear design method for them. This paper summarizes findings from the New RC tests and others on shear strength of reinforced concrete beams and columns with high strength concrete and high strength shear reinforcement. The accuracy of currently available shear strength equations are then examined. The shear design method proposed by the Shear Working Group of the New RC project is also introduced in this paper.
10.14359/5908
SP176-18
LA. Wyllie, Jr.
Possible applications of the use of high strength concrete in structures designed to respond to the strong ground shaking of earthquakes is discussed. The basis of the building code requirements is discussed and various limitations are explored. The need for detailing of members to ensure ductility is discussed and how the high stresses that can be present in high strength concrete members will require more stringent confinement reinforcement as well as other detailing procedures. The paper urges caution when designing with high strength concrete in seismic regions.
10.14359/5909
SP176-19
S. Otani, M. Teshigawara, M. Murakami and T. Okada
The increase in the number of high-rise reinforced concrete buildings has accelerated the research on the manufacturing and development of high strength materials. Ministry of Construction, Japanese Government, organized a national research project from 1988 to 1993 for “the Development of Advanced Reinforced Concrete Buildings using High-strength Concrete and Reinforcement.” This paper introduces the earthquake resistant design guidelines developed as a part of this technical project. The scope is limited to the building height of 200 m, the concrete strength of 60 MPa, and the steel strength of 700 MPa.
10.14359/5910
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