Estimate And Numerical Analysis With Effective Reinforced Depth Of Dynamic Compaction For Backfilled Soil

More lands are required for constructing in mountainous towns during the processof urbanization, the numbers of the projects constructed on the soils that are got fromthe way of "exploded hill and filled valley" are continually increased. It is one of theproblems in soil treatment that how to make these soils to satisfy the project requestssuch as deformation, intensity and stability, which are need to be solved urgently.Comparison with the other soil improvement methods, dynamic compaction has muchtechnical superiority to deal with such non-uniform backfilled soils, but the correlativeresearches are relative fewer, therefore this is an important research subject. Thisarticle system analysis dynamic compaction reinforcement backfill land basemechanism as well as the effective reinforcement depth influence factor, and carried onthe value to the related construction parameter to simulate and to optimize. The maincontents are as follow:1. By deeply analyzing soil's consolidation theory and shock wave theory, itdiscusses dynamic consolidation mechanism of filling-up soil and putting forwardsome opinions of reinforcing filling-up soil.2. By summarizing and analyzing the impact of factors of dynamic compaction,establishing two dynamic consolidation effective depth prediction model—ANNmodel and the dynamic gray model, and the actual project were predicted for errormeet engineering requirements. Note that the model can be used to predict dynamiccompaction effective reinforcement depth.3. Locations for dynamic consolidation works of the new campus for the detectionand laboratory experiments, focus on dynamic consolidation purple weatheredsandstone and red-clay netted a standard penetration test and static load test, and thedensity of soil experiments. Some dynamic consolidation fill such an effectivereinforcement depth of up to 6m around, affect up to about 7m. Similar to the dynamiccompaction will be of great reference value.4. Backfilling against land-based, for ANSYS-DYNA software, using dynamicfinite element theory for the deep of dynamic compaction effective reinforcement forthe numerical simulation, Dynamic Compaction of the effective consolidation depthnumerical simulation of Criterion. Simulation of the process of using plastic strainthan 1% of the region that is dynamic compaction effective reinforcement of regional depth. On this basis, the impact of dynamic compaction effective reinforcement depthof factors numerical simulation and analysis, By pounder drop from the impact of thesetwo factors, both established and effective reinforcement depth of relationship; Also,the same tamping energy, the radius pounder, Pounder momentum of a different study,reached mallets superior low light hammer high-reinforcing effect. Finally, thedouble-layered ground, analysising and summarying soft soils under and hard soilsunder of dynamic consolidation effect.