Research On The Application Of The Motar Composite Materials Of MPFS In Steel Arch Bridge Seismic Reinforcement Engineering

Bridge seismic level and how the standard seismic design of theimplementation of the bridge is closely related to the earthquake disaster at homeand abroad, the survey as transportation network bridge the key structure, and itsdamage not only endanger people life and property security, but also affects thepost-disaster reconstruction work smoothly. So countries attach great importance tobridge seismic code of modifications. Long-term since, our country has been thehighway bridge seismic design according to the "89" standard, it failed to absorbbridge seismic field on the latest research results, cannot adapt to the currentChina’s transportation infrastructure needs. Therefore, the relevant management,scientific research departments devoted to revise new seismic design of thehighway bridge standard, and in2008, issued the highway engineering anti-earthquake design detailed rules. But new rules for active duty highway bridge theseismic performance of seismic safety evaluation and how the seismicstrengthening technology problem is useless well documented. On the other hand, alot of pile up industrial waste-fly ash has seriously endanger people’s livingenvironment, go against the construction of the sustainable development of society.Therefore, the comprehensive utilization of coal fly ash is placed in front ofscientific workers in need of solution and a difficult problem.To sum up all the above, in order to solve the highway bridge seismicstrengthening technology which of technical problems and governance fly ash onthe environmental pollution, solve the difficult problems of fly ash pile up. Thispaper first through the material experiment and statistics theory establishedpolyurethane fly ash of the composite material mixing mortar best, second establishpolyurethane composite material all kinds of fly ash mortar mechanical relations,and finally through the finite element theory and nonlinear dynamic time historymethod is analyzed using polyurethane composite material for fly ash mortar activesteel arch bridge seismic strengthening case the practical effect and its seismicassessment. Test the results of the study show that it is not only a new type ofenvironmental protection composite material, has the advantages of high strength,toughness, good and cement concrete structure with good bonding between characteristics, but also has the anti-permeability, frost resistance and corrosiongood physical and chemical characteristics, is the highway bridge structure seismicstrengthening reinforcing materials ideal. The main research contents of this paperare as follows: Get the polyurethane composite materials of fly ash mortar mixproportion design best technical plan; Established a polyurethane compositematerials of fly ash mortar strength and density of the relationship between thestress and the strain and the constitutive relationship; Clear of polyurethane fly ashcomposite material anti-permeability of cement mortar level and technical indexfreezing-thawing resisting; Get the polyurethane composite material and fly ashmortar cement concrete interface drawing, direct shear and all kinds of mechanicalcharacteristics; Confirm the fly ash mortar using polyurethane composite materialfor active service outsourcing steel arch bridge of the actual effect of aseismaticreinforcement.