Bridge quality inspection meets the requirements. 20 12 At about 5: 30 on August 24th, the first ramp of the relief project of Yangmingtan Bridge in Harbin collapsed, and four trucks on the bridge rolled over onto the bridge, resulting in three deaths and five injuries. At 3 pm yesterday, the Harbin Municipal Government held a press conference to inform that a 7-member expert group was set up immediately after the accident to identify the collapsed ramp. At the same time, the National Construction Engineering Quality Supervision and Inspection Center was entrusted to inspect and identify the steel and concrete samples of the accident ramp, and to investigate and collect evidence on vehicle loading, modification, driving route, engineering design, quality and daily management. During this period, a total of 105 person-times were investigated and collected, and 297 relevant materials were obtained. Liu Xingming, executive deputy director of Harbin Safety Supervision Bureau, said that the accident investigation team entrusted Harbin Development Zone Mingjue Engineering Quality Inspection Co., Ltd. to test the geometric dimensions of the accident bridge pier, the thickness of the protective layer of the pier and the spacing of steel bars, the concrete strength of the pier and capping beam, the strength of the cushion concrete and the diameter of steel bars, and found that all the indicators met the design requirements. After that, the National Construction Engineering Quality Supervision and Inspection Center tested the strength, steel bar diameter and tensile properties of the concrete core sample, and concluded that the concrete strength, main bar diameter, yield strength, tensile strength, elongation and yield ratio of the capping beam all met the requirements. According to the circular, after investigation, Fujian Jiao Jian Group Engineering Co., Ltd., the construction unit, has established a quality responsibility system according to relevant regulations, with a sound construction quality inspection system, standardized process management and complete quality inspection and records of concealed works. Every working procedure has been self-inspected, and the quality industry information is complete.