Building hardware joints are welded in most cases, which have risks of fire and explosion. Besides, the secondary damage of the destruction of the welded parts can be caused by the horizontal displacement of the structure due to earthquake or wind load. This paper compared the horizontal displacement following abilities of welded building hardware and non-welded building hardware. To do this, We conducted actual formation shake table test, and checked on the horizontal displacement following ability of structure by comparing their responses to earthquake load. We made the 2m-high framework to examine the responses of the actually constructed building hardwares, and analyzed the displacement responses of the welded-typed, non-welded-typed, and cruciform bracket building hardwares. We conducted the test by increasing acceleration rate until displacement reached 40mm corresponding to allowable relative story displacement II. The result of the test showed that the building hardware using welding work made cracking and breakage on welded connections of welded building hardware, but non-welded building hardware with no use of welding work and cruciform bracket building hardware make no problem, and that non-welded building hardware is superior to that of the welded building hardware in the horizontal displacement following ability due to earthquake or wind load.

When attaching the building exterior, builder used welded-building hardware in general. But it caused variety accidents like fires and explosions. Thus in this study, we developed the building hardware that not use welding and can follow the structures horizontal displacement when an earthquake occurs in the load building. And shaking table test was conducted.

This case study is evaluation of pier safety for horizontal displacement come from a pile of rock muck under construction, restoration measure and application of repair and reinforcement.

In this paper, structural analysis and causual analysis of superstructure horizontal displacement by retaining wall displacement is realized, as a result, it is considered that retaining wall displacement by soft soil and lateral flow pressure occurred in the soft soil affect superstructure horizontal displacement. Although resistance force is slightly larger than the action force when reviewing superstructure safety, it is considered that repair and reinforce are necessary when considering safety factor with respect to the difficulty of estimating accurate load, and the uncertainty of soil condition.