The Tackling Of Whole Weathered Granite Roadbed Of Highway And Research On Subsidability Regulation Of Subgrade

When the whole weathered granite is regarded as superhighway roadbed filler , it is suffered from the restriction in the application in the highway because its mica contain to measure high, the construction is lax, the water stability is bad, and the cohesion is small . Jingzhu superhighway in Hunan province from Linxiang to Changsha is 182.84 kilometers long , among them the main line is required passing 72 continuous mileage of kilometers of the whole weathered granite district , and the contact line should be acrossed 22 kilometers of whole weathered granite segment .If not adopt the filler of this kind material conduct and actions roadbed , whether is from leave the square or speak from the debit, its engineering measure is big , the price is high , and is uneconomical . If adopt this kind material , how to guarantee its engineering quality ? This lesson research is for resolving this problem but doing .This lesson should be discussed the subsidability regulation of whole weathered granite as it is for subgrade filler from a few aspects below : First engineering character . For completely and systematically control the engineering properties of Linchang superhighway whole line weathered granite , it is necessary to completely census the whole weathered granite road segment proceeds . Second ,ensuring the load-carrying ability of subgrade . Join togethering theories analyzing to study the whole weathered granite's the foundation supporting capacity and engineering certainly .Bring up a practical method to ensure the clearing-out mud's thickness of roadbed according to the supporting capacity ,and the suggestion that taking worth according to foundation extreme limit load-carrying ability or foundation extreme limit load to carry to .Giving out the calculation formula of foundation extreme strength that increased ,and it is meaningful for reasonably evaluating the supporting capacity of foundation and certaining the exposing mud thickness .Third ,roadbed construction technique and quantity control .On the roadbed the foundation for construction development ,pass to analyze the roadbed to move the dint's variety regulation ,strength index sign for roadbed of certain different road segment .The examination that pass the right experiment road bring ups the construction guidebook .Fourth ,the subsidbility regulation of subgrade of the whole rotten granite .Because of the whole morals and custom granite district geology the asymmetry that environment complicacy and soil ,influence the roadbed transform to exsits with stable factor misty of indetermination ,therefore it is necessary to analyze...