Seismic Performance Assessment and Improvement of Prestressed Concrete Buildings Based on E-Defense Shaking Table Test

Abstract

A four-story prestressed concrete building is tested by using the E-Defense shake-table facility. The test building with a rectangular plan utilizes the moment frame system in the longitudinal direction and the multi-story wall frame system in the transverse direction. For a series of tests, the intensity of input ground motions is gradually increased. Finally, the moment frame system sustains the maximum story drifts more than 0.05 rad exhibiting a partial mechanism, while the multi-story wall frame system remains the story drifts less than 0.02 rad.

Computational modelling of a four storey post-tensioned concrete building subjected to shake table testing

“…al. [12], the test building exhibited a significant torsional response during all the imposed earthquake motions. The modal properties of the test building before being subjected to earthquake motions were investigated during this study to find a possible explanation for the observed torsional behaviour.…”

“…To properly investigate the effects of wall-to-floor interaction large-scale building tests are required. Notable tests of buildings that utilised unbonded post-tensioned precast concrete walls include the PRESSS five storey building [2], the three-storey precast building tested on the UCSD shake table [11], and the four-storey precast post-tensioned building tested on the E-Defence shake table [12]. The PRESSS and UCSD building used specially designed wall-to-floor connectors that isolated the floor from the uplift of the wall to provide more dependable wall behaviour.…”

“…A brief description of the test building is provided to enable understanding of the computational model and full details of the building and test program were published by the joint Japanese and United States research team [12,15,16]. The building was designed to a mixture of Japanese and United States standards and it should be noted that some details such as the grouted post-tensioned columns are unlikely to be utilised in New Zealand.…”

A Demountable Connection for Low-Rise Precast Concrete Structures with DfD for Construction Sustainability-A Preliminary Test under Cyclic Loads

“…[30]. Takagi et al and Nagae et al [31][32][33] proposed a steel rebar-steel plate welding method for According to the literature, dry connection and wet connection including seaming of fabricated members such as shear walls have been researched well in the past 50 years. In the 1980s and 1990s, Wan et al [5][6][7][8] studied the performance of the wet joints of prefabricated slab structures, including the influence of shear span ratio, axial pressure, reinforced concrete and joint types on the joints of large-slab structures was considered.…”

“…[30]. Takagi et al and Nagae et al [31][32][33] proposed a steel rebar-steel plate welding method for prefabricated shear walls. In this joint, the floor slab is placed on the lower shear wall, the root of the upper shear wall is designed with an open connected by a wielded steel plate, and then the steel bars of the upper and lower shear walls are welded on the steel plates.…”