scholarly journals Behaviour of a prestressed concrete interior beam-column assembly under cyclic loading

1973 ◽  
Vol 6 (4) ◽  
pp. 158-169
Author(s):  
R. Park ◽  
K. J. Thompson
Keyword(s):  
Prestressed Concrete ◽  
Concrete Beam ◽  
Seismic Load ◽  
Research Association ◽  
Concrete Frames ◽  
Building Frames ◽  
Framed Structures ◽  
Prestressing Steel ◽  
Concrete Building ◽  
The University

The University of Canterbury is at present conducting an experimental investigation into the seismic resistance of concrete building frames. This research project is sponsored by the N.Z. Prestressed Concrete Institute, the Building Research Association (N.Z.) and the University. The test frames will include a range of proportions of prestressing steel
and ordinary reinforcing steel to allow a comparison of prestressed and reinforced concrete frames and to establish the possible advantages of combining both systems. The tests are aimed at determining the deformation capacity and degree of damage of such frames when responding to severe seismic load
reversals and will establish further basic information for the evaluation and design of framed structures for earthquake resistance. Testing of the first test specimen has been completed. The specimen (Unit 1) consisted of
a beam-column assembly with a prestressed concrete beam. After testing under very severe seismic type loading the damaged concrete was repaired and the assembly retested. This
 report summarizes the results obtained from
the tests on that specimen.

scholarly journals Progress report on cyclic load tests on prestressed partially prestressed and reinforced concrete interior beam-column assemblies

1975 ◽  
Vol 8 (1) ◽  
pp. 12-37
Author(s):  
R. Park ◽  
K. J. Thompson
Keyword(s):  
Reinforced Concrete ◽  
Prestressed Concrete ◽  
Reinforced Concrete Beam ◽  
Seismic Load ◽  
Research Association ◽  
Concrete Frames ◽  
Building Frames ◽  
Prestressing Steel ◽  
Load Tests ◽  
The University

The University of Canterbury is at present conducting an experimental investigation into the seismic resistance of concrete building frames. This research project is sponsored by the N.Z. Prestressed Concrete Institute, the Building Research Association (NZ) and the University. The test frames include a range of proportions of prestressing steel and ordinary reinforcing steel to allow a comparison of prestressed and reinforced concrete frames and to establish the possible advantages
of combining both systems. The tests are aimed at determining the deformation capacity and degree of damage of such frames when responding to severe seismic load reversals and will establish further basic information for the evaluation and design
of framed structures for earthquake resistance. The specimens consist of beam-column assemblies with either a prestressed, partially prestressed or reinforced concrete beam. This paper summarizes the results obtained from the first eight test units. The results from the first seven units may be seen reported in more detail elsewhere.

scholarly journals Behaviour of cast in situ reinforced concrete frames incorporating precast prestressed concrete beam shells subjected to seismic loading

1984 ◽  
Vol 17 (4) ◽  
pp. 223-250
Author(s):  
R. Park ◽  
D. K. Bull
Keyword(s):  
Reinforced Concrete ◽  
Prestressed Concrete ◽  
Concrete Beam ◽  
Plastic Hinge ◽  
Seismic Loading ◽  
Hinge Region ◽  
Design Code ◽  
Concrete Frames ◽  
Precast Prestressed Concrete

The performance of cast in situ reinforced concrete frames incorporating precast prestressed concrete U-beam shells, subjected to seismic loading, is investigated. The precast U-beams act as permanent formwork and are not connected by steel to the cast in situ concrete of the beam or column. A review of the design provisions of the New Zealand concrete design code NZS 3101 relevant to the design of such composite structures is made and supplementary design recommendations are proposed where necessary. Three full scale reinforced concrete beam-exterior column subassemblies with precast prestressed concrete U-beam shells were constructed and tested to determine their seismic performance characteristics. Two of the subassemblies were designed for
seismic loading with potential plastic hinge regions in the beams. One of these subassemblies had the bond between the precast and
the cast in situ concrete in the beam deliberately broken in the potential plastic hinge region, while the other was bonded. The third subassembly was not designed for seismic loading. The test results for the two subassemblies designed for seismic loading demonstrated that the seismic provisions of the New Zealand concrete design code, in conjunction with the supplementary design recommendations, resulted in adequately ductile behaviour with satisfactory energy dissipating characteristics. It was observed that the U-beam was less damaged during seismic loading when the bond between the precast and the cast in situ concrete in the potential plastic hinge region was deliberately broken. The performance of the other composite beam-column subassembly, which was not designed for seismic loading, was unsatisfactory, since the energy dissipating characteristics were poor and excessive sliding shear displacements occurred in the plastic hinge region.

scholarly journals Ductility of prestressed concrete members

1971 ◽  
Vol 4 (1) ◽  
pp. 145-170 ◽  
Author(s):  
R. W. G. Blakeley ◽  
R. Park
Keyword(s):  
Prestressed Concrete ◽  
High Intensity ◽  
Concrete Beam ◽  
Analytical Determination ◽  
Prestressing Steel ◽  
Concrete Members ◽  
Load Factors ◽  
The Moment ◽  
Reinforcement Distribution

An analytical determination of the moment-curvature relationships of prestressed concrete members under high intensity monotonic loading is presented, and compared with experimental results. The effects on ductility of such variables as transverse reinforcement, distribution of the prestressing steel within the section, steel area ratio, and axial load are described. A comparison is made of the ductility available in comparable prestressed and reinforced concrete members. The results of tests on prestressed concrete beam-column assemblies under high intensity cyclic loading are referred to and conclusions are drawn on the seismic resistance of prestressed concrete members. Load factors for seismic design are discussed.

Prestressed Concrete Building Production in Sweden

PCI Journal ◽  
1959 ◽  
Vol 4 (3) ◽  
pp. 18-32
Author(s):  
HENNING COLLBORG
Keyword(s):  
Prestressed Concrete ◽  
Concrete Building
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