as well as at present

Recently, this reporter constantly received masses of Zhengzhou city, Henan province, located in North-East of the city, known as "Asia's first overpass" Liu Jiang interchange grade separation bridge designed to last for 50 years, but has become a dangerous bridge opened just 6 years, was recently forced to conduct a massive bridge reinforcement. Expert: overhaul of such abnormal Liu Jiang interchange overpass in Beijing-Zhuhai high speed and continuousHuo Freeway Zhengzhou interchange, with a total investment of 300 million Yuan. 　 　　It is the largest Expressway overpass in Henan province and attractions, as well as at present, China's largest Freeway overpass, covers an area of 1539 acres, head of the Asia. Journalists on-site field survey found that almost all of the piers and the bridge connecting parts as well as the side of the bridge you have installed the large steelPlates, each plate width of about 20 cm. The bridge currently has more than been strengthening, 3-story bridge overpass lanes side include abdominal reinforcement, reinforcement of its scale, area of broad shocking. 　　From inference on the degree of the strengthening of new and old, construction for long. In June 2002, construction of the bridge, opened to traffic on October 1, 2004, was open to trafficMore than 6 years, why is "operation"? Built more than seven in bridge construction Enterprise expert told a press conference, in accordance with the provisions governing highway law, high speed road and bridge design life of between 50 to 100 years, within a short time this large patch is not very good. 　　Is more than likely bridge caused by cracks on box girder bottom side webs. Experts,Bridge cracks caused about three reasons: first, design is unreasonable, structural calculation inaccuracies, mechanical problem; the second is the quality of raw materials and construction techniques do not cross the border, concrete in construction is unreasonable, vibration is not in place; three is overloaded vehicles, box girder exceeded design loads. In response to: overloaded vehicles is the main reason on November 23, iron 20 construction Party Bureau groupDuring the second company chief engineer interviewed by reporter Sun Weiliang, bridge of cracks due to "traffic flow" and "overloading". 　　Sun Weiliang said overpass under 2015 plan traffic flow for reference, designed maximum carrying load of up to 55 tons load standard for traffic flow now is beyond the original design, and the phenomenon of overloading is very serious. Henan province Communications DepartmentThe situation described in the note from a reporter, "since the bridge opened, traffic volume increased year by year, large overloaded vehicles are more. "Information notes, in 2009, the Beijing-Hong Kong and Macao expressway from Xinxiang to Zhengzhou's Office in accordance with the relevant administrative measures, for General detected during an inspection of the bridge, part of the ramp beam disease occurs, mainly for local crack of box girders,Crack width of about 0.1 mm to 0.2 mm. Based on detailed analysis, crack was mainly due to overloaded, overloaded vehicles too many result in insufficient local shear strength. 　　Although the disease has not yet affect the safe operation of the bridge, but the durability of bridge or has a certain influence. It is reported that as a precautionary measure to ensure traffic safety, improving the bearing capacity of bridge diablo 3 gold, the Administrative Office at 20May 10, a preventive maintenance to Liu Jiang interchange construction. 　　Current operations are in good condition of the bridge diablo 3 power leveling, bridge bearing capacity to meet design requirements. 　　But there is still a driver questioned, overloading said obviously it was difficult to convince overpass has "bean curd residue project" smacks. Takayasu's Arteritis under threat, and truth verification was needed. We will present a further attention.