Experimental Study Of FRP Anti-collision Device In Pier Anticollision Aspects

In recent years, vessel-bridge collisions occur frequently due to the increasingnumber of bridges crossing rivers and straits and the rapid development of vesseltransportation, which cause huge losts to social economics, casualties and environmentpollution, therefore the safety of bridge structures under vessel collision has attractedgreat attentions from both stuctural engineers and common citizens. In order to reducethe loss brought by ship-bridge collision, bridge design engineers consider to usingpassive protection device (buffer device) and protection system to the has been builtbridge. By preventing or change the direction of ship impact load to reduce the shipimpact on pier load, make the bridge pier to minimize the extent of damage, but also toreduce the loss of the destruction of the ship and anti-collision facilities. In the world, awide variety of Anti-collision devices has been put into use, each with distinctcharacteristics. On the background of FRP anti-collision pontoon engineering ofChongqing Jialing River Huanghuayuan Bridge piers, we make a research on theprotective performance of a new flexible FRP anti-collision device by using the mothedof numerical simulation and model test.First, progress in numerical simulation of ship-bridge collision test and the homeand abroad typical structure impact test are introduced in this thesis. Then use forreference of the common way of the home and abroad typical structure impact test.Design the test impact of FRP anti-collision pontoon engineering structure modelimpact test, including pontoon model structure design, pier model structure design,impact loading device design and the impact test system design. We carried on thematerials and components which used for FRP anti-collision pontoon engineering ofChongqing Jialing River Huanghuayuan Bridge piers basic mechanics performance test,and won the Jialing River Huang Huayuan bridge piers FRP anti-collision pontoonengineering structure model of the impact test and finite element simulation of therequired material performance parameters. The impact test at the same time, using thenonlinear dynamic finite element analyse software ANSYS/LS-DYNA to carry on thenumerical simulation of the impact test. The impact test data and numerical simulationof the calculated results were compared and analyzed, to understand the local force，deformation, failure and consume energy characteristics of the FRP anti-collision devicestructure, to verify the reliability of the calculation method and The credibility of thecalculation results of model structure crash simulation computation,and for the jialingriver Huang Huayuan bridge piers FRP anti-collision pontoon engineeringconstruction drawing design provide a reliable calculation method.Finally, adopts the finite element numerical simulation method that has beenverified by FRP anti-collision pontoon model structure impact test, to simulate andanalysis the jialing river Huang Huayuan bridge Maximum security impact force of thehighest standard No.2pier and its FRP anti-collision pontoon structure under themaximum navigable water level and different directions ship collision. The numericalresults show that: FRP anti-collision pontoon can achieve the "not hurt the pier, ship,and less structure self-injury" design purpose.