The Analysis And Research On The Major Transportation Of Highway Bridge Of The North-south In Shanxi Province

Major transportation is regarded as a special field of transportation, and also animportant task. Major transportation in high precision, large size, weight of single fromdozens of tons to hundreds of tons，but these far more than the standards of highway, andthese raise higher standard of the wide of highway, the overload of bridge,turning radius andthe techonology of clearance of impending object. In order to meet the great piece goodstransportation, we must improve some highways and bridges traffic conditions in certain areas,which can adapt to the development of national economy. Therefore, the construction of largetransportation highway bridge in our country has become a very important part of highwayconstructions.This thesis first to analyze major transportation and to know the crossing factors ofhighway bridge, which to guide the big transportation highway bridge investigation in ShanxiProvince. Second it bases on the north and south of Shanxi Province, the big transportationline G210in shaanxi have kingdom to xi ’an or cross (K198+900~K915+625) section forhighway bridge, tunnel, the present situation and the toll detailed investigation, judge line isable to adapt to the big transportation. Also, Based on the calculation of highway technicalrequirements,proposed to the transport of more than three highway,reach the need oftechnical standards:pavement,traffic facilities,roadbed width of7.5m,the effective road with6.0m,the line longitudinal slope is less than6%,the turning radius is greater than60m..Theindividual does not meet the large transport sections of the highway based on technicalstandards.And put forward the corresponding modification suggestions. Again, according tothe points span fitting moment and live load effect of shear ratio curve and live load effect ofthe increase sin the formula to calculate the ratio, it is concluded that the existing bridgeload level from the original design load to increase the level of highway I, shouldsatisfy M<6%and Q<8%of the conditions,"to guarantee the safety of the structure. For byincreasing load level live load effect caused by the ratio of more than established range bridge,put forward the corresponding different reinforcement method. Finally, on large transportencountered in other obstacles,processing methods such as tunnels,flyover,toll stations,andoverhead power equipment,traffic signs.