Miku Kurosawa

Tokyo Institute of Technology | TITech ·  Department of Architecture and Building Engineering

A new full-scale seismic isolation test facility named “E-Isolation” has been developed and adopted as a new system that can directly measure the reaction force of the device, excluding the friction force generated in the bearing under the moving platen and the inertial force due to the weight of the platen. In this paper, several experiments were...

Metal panels formed by bending metal plates are widely used as non-structural exterior walls. They must be able to follow the story drift during earthquakes without losing important functions and falling out. This paper describes two in -plane cyclic loading tests: one-unit of metal exterior wall with one metal panel and multiple-unit of metal exte...

In recent earthquakes, it has been reported that members supporting air-conditioners (suspension support members) have been cyclically deformed and fractures at the suspension source or equipment support. The fall of the equipment due to the fracture of suspension support members is a serious damage that directly leads to the loss of building funct...

For steel framed buildings with an eave height of 9m or less and beam span of 13m or less, bolt joints are permitted to connect the main structural members. This paper describes the effect of slip in bolt joint on the story drift angle of the frame, based on static loading tests and seismic response analysis of full-scale braced frames. Experimenta...

The Authors are grateful for the suggestion that Prof. Hitoshi Kuwamura has graciously shared regarding the paper. In conducting research on the seismic performance of non-structural exterior walls, it is important to clarify the structural behavior of exterior walls in complicated compositions in order to ensure the safety against fall out. This p...

In Japan, non-structural exterior walls consisted of metal panels are widely used for low- and medium-rise buildings. It is important to experimentally verify that the exterior walls can follow the story drift of the structural frame during a major earthquake without damage or falling off. In this paper, in-plane loading tests were conducted on one...

This study discusses connection strength of braces with various cross-sectional shapes. The monotonic tensile tests were carried out to investigate effects of connection detail on the connection strength. As a result, the ultimate strength basically increases in proportion to the number of bolts at the connection, regardless of the cross-sectional...

A reconnaissance of steel school gymnasium damaged by the earthquake off the coast of Fukushima Prefecture on February 13, 2021 has been conducted. These gymnasiums were also damaged in the 2011 Tohoku earthquake, and have been repaired or strengthened. In the two gymnasiums, severe damage to non-structural components occurred again. It means that...

Metal work refers to a series of processes that manufactures and constructs various metal finishing materials. In this paper, three steps of fundamental experiments of bolted joints in metal work were conducted. The test results show that the slotted hole reduces slip coefficient by about 30% and the slip coefficient of the surface treatments for r...

In Japan, metal panels made from aluminum or steel are widely used as the exterior finishing for medium and low-rise buildings such as offices and commercial facilities. It is important to control the damage to the metal exterior wall in order to realize the continuous use of buildings after an earthquake.In this study, a cyclic loading test of met...

In the 2011 Great East Japan Earthquake, it has been reported that hanging bolts of building equipment are fractured around the connection and cause damage to equipment to lose its function. The low-cyclic fatigue characteristics of hanging bolts caused by cyclic deformation has been investigated in previous studies. However, effects of relatively...

In the bolted connections of the non‐structural exterior wall to structural frames, slotted holes are often used to improve the workability. In Japan, in case the slotted holes are used in the bolted connections of structural frame, a reduction factors according to European Recommendations for bolted connections in structural steel work⁽¹⁾ have to...