详情

Enhanced Hydraulics Design for Highway Bridges and Culverts

项目名称：	Enhanced Hydraulics Design for Highway Bridges and Culverts
摘要：	The major damage to bridges occurs during floods. Damage is caused for various reasons. The main reason being scour at bridge foundations, namely piers and abutments. Because of this, accurate prediction of scour depth is extremely important in the hydraulic design of bridges. Empirical equations for estimating the contraction and local scours have been developed by different research groups. These equations are described in detail in the FHWA scour design manual HEC-18 "Evaluating Scour at Bridges" (Richardson and Davis), which are based largely on laboratory experiments and very limited field observations. This study will validate and modify existing scour equations to be specifically applicable to bridges in Hawaii's coastal zone. The culverts along coastal highways in Hawaii are often plugged by sand, which reduces the culverts' drainage capacity and may cause runoff to back up and flood the roadway during heavy rainfalls. A survey that was recently conducted on existing culverts on Oahu found that about 80% of the coastal culverts are plugged by sand, which means that the sand inside the culvert covers more than 50% of the culvert cross-sectional area. This study will assess the flood risk and maintenance need for the existing culverts and the installation of new culverts.
状态：	Completed
资金：	253532.00
资助组织：	Federal Highway Administration<==>Hawaii Department of Transportation
项目负责人：	Matsuda, Curtis
执行机构：	University of Hawaii, Manoa
开始时间：	20061009
实际结束时间：	20081008
主题领域：	Bridges and other structures；Highways；Hydraulics and Hydrology；Research