The plastic blind ditch manufacturers, abutment foundation are generally made by reinforcement (such as the foundation, pile foundation settlement is small, etc.). Need to be opened for a longer period of time in order to stabilize. After the completion of the abutment settlement can be regarded as zero. But due to the compression creep of embankment fill their inherent nature, even after full compaction is difficult to avoid the settlement caused by factors such as soil consolidation, settlement of embankment station is mainly composed of natural foundation settlement and the settlement of two parts. In the embankment weight and vehicle vertical load and shock load, subgrade filling is gradually compressed, the porosity, density increases, resulting in a certain period of embankment settlement.
The connection part of bridge and embankment, due to the existence of gap, rain along the cracks, seepage under the right abutment is generally not destructive effect, but easy to soften the soil erosion and packing, especially for Embankment Compaction is not enough, prone to erosion and softening, reduce the strength, caused the embankment deformation. In the external load of vehicle impact, will inevitably cause bridgehead roadbed subsidence. But under embankment site slab is not processed, make a plate is placed directly in the common soil, resulting in the formation of depression in there, so that the slab. Furthermore, the design of bridge abutment and embankment settlement of adjacent difference to consider more, and longitudinal slope caused by the change of the bridge after completion of settlement caused by insufficient attention, bridge section of longitudinal slope is not smooth, the mutation point often form table drop, resulting in the bump phenomenon.