详情

Geosynthetic Reinforcement to Protect Underground Pipes against Damage from Construction and Traffic

项目名称：	Geosynthetic Reinforcement to Protect Underground Pipes against Damage from Construction and Traffic
摘要：	More than 5,000 significant pipe incidents happened in the United States from 1999 to 2009 that resulted in fatalities, injuries, and significant property damage and loss. Of those serious incidents 25 percent were caused by excavation damage. Therefore, protection of underground pipes against damage from construction and traffic are important and necessary. Unfortunately, no effective method is available so far. This research project will develop a technology using geosynthetic reinforcement to protect underground pipes (either existing or new pipes) against damage from construction or traffic. The geosynthetic reinforcement is laid across the trench between the surface and the top of the pipe. The objective of this research is to determine the level of protection provided to a flexible pipe by a geosynthetic layer. The hypotheses are: the geosynthetic reinforcement over a buried pipe will reduce the stresses and strains in a flexible pipe, caused by a penetrating (simulating excavation during construction) or dynamic surface load (simulating traffic). This research objective will be pursued at the CEAE Department at the University of Kansas using the large-scale geotechnical test box (3 m long x 2 m wide x 2 m high). In this research, the following factors will be investigated: (1) type of backfill in trench (sand and gravel), (2) type of surface cover (sand and gravel); (3) mechanical properties of geosynthetic, (4) depth of geosynthetic, and (5) type of loading (penetrating and cyclic loading). Earth pressure cells, displacement transducers, and strain gauges will be installed around or on the pipe and the geosynthetic to investigate the effects of the above influence factors. The successful completion of this research can advance the technology of using geosynthetic reinforcement to protect underground pipes, and potentially help engineers develop a system that can avoid catastrophes.
状态：	Completed
资金：	72404.00
资助组织：	Research and Innovative Technology Administration
执行机构：	University of Kansas, Lawrence
开始时间：	20120601
实际结束时间：	20131231
主题领域：	Construction；Geotechnology；Highways；Pipelines；I30: Materials