On the pressure drop across Venturi scrubbers in high temperature region, few reports are available. Precooler is sometimes used to cool hot gases, but in order to pass hot gases of over 700•Ž directly into Venturi scrubbers, it is necessary to know about this pressure drop.

Recently, it has become increasingly important to instigate more widespread seismic retrofitting for seismically weak structures in Japan, which is frequently subject to massive earthquakes. Generally, post-installed anchors are used to connect the seismic retrofitting members to existing members. However, no computational models of post-installed anchors have yet been proposed in previous studies to evaluate stress-displacement relationships. Accordingly, we developed a new mechanical model for postinstalled anchors. In this model, the kinking behavior of anchor bolts, bearing behavior of concrete, and tensile behavior of anchor bolts are considered. The proposed model can reasonably simulate the mechanical behaviors of the previous test results.

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Experimental results of new precast concrete beam-column connections constructed by post-tensioning precast beams to precast columns using unbonded tendons are presented. The connections consist of precast beams which has steel cap at its ends and precast columns which has steel band at the connection region. The steel cap and steel band are used to reduce damage in the plastic hinge region of precast beams. Four test specimens were subjected to reversed cyclic loading and comparisons were made between the behavior of presented precast concrete specimens and conventional precast concrete specimen.