地震区预制混凝土剪力墙连接(8页).pdf下载

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PRECAST CONCRETE SHEAR WALL CONNECTIONS
FOR SEISMIC ZONES
K.A. Soudki(l) and S.H. Rizkalla(2)
ABSTRACT
The precast concrete shear wall system is becoming very popular in North America for low,
medium, and highrise construction due to the economical advantages possible with the ease and
speed of assembly, and the high quality of the precast panels. The connections between panels
are extremely important since they affect both the speed of erection and the overall integrity of
the structure. This paper presents the results of the last two phases of a six-year research program
conducted to investigate the behaviour and the capacity of fIfteen connection configurations used
for precast load-bearing shear wall panels subjected to monotonic shear loading and large reversed
cyclic loading conditions.
Connection configurations include dry-packed plain surface, dry-packed plain surface with
continuity reinforcement, dry-packed with two types of mechanical shear connectors in addition
to the continuity bars, dry-packed with post-tensioning, and two types of dry-packed multiple shear
keys. The research also include connections which support hollow-core slab with and without
post-tensioning. The performance of new innovative connections, such as partial or complete
debonding of the reinforcement continuity and the use of energy dissipating mechanical
connections for the continuity reinforcement, were also examined. Three different levels of load
normal to the connection to simulate the effects of gravity load were used.
The research fmdings of this investigation were implemented in the design and construction
of three 32-stories apartment buildings in Winnipeg, Manitoba. The connections considered in this
study provided significant savings in construction time and cost.
1 Doctoral Candidate, Civil Engineering Departmeht, University of Manitoba
2 Associate Dean of Engineering and Professor, University of Manitoba