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Changes in our social situation and economic environment
have created new needs or requirements for
highway bridges. The new needs include : economical
bridge designs to reduce construction cost, maintenance
technologies to effectively utilize the existing
infrastructures, and bridges for easing traffic congestion
with the aim of redeveloping urban areas. To support
the aforementioned needs, the development of
new technologies is also required such as compound
structure technology, fatigue-resistant technology,
wind- and quake-resistant engineering. Road Structure
Ordinance and Specifications for Highway Bridges have
also been revised to meet the recent social needs. This
report outlines our activities for these new tasks. |
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