2011年高考理综谜底(全国卷)(国外英文资料).docVIP

2011年高考理综答案(全国卷)(国外英文资料) In the morning, we mainly watch jiangdu 237 national road box girder, the bridge length 415.634 m, located in a village in jiangdu city. The whole bridge is located in a curve, by 8 x 32 m prestressed concrete whole prestressed reinforced concrete box girder + 1 x 24 the whole box girder + 1 x 32 m cast-in-situ prestressed reinforced concrete whole + 1 x 80 m steel box girder truss of combination beam. And mainly responsible for the manual construction process and the process. A lot of knowledge and principle is often the key to solving the problem. Second, through this graduation internship, I was more aware of the importance of construction management. Whether engaged in design or construction or supervision, we should focus on improving the efficiency of construction management. The two engineering units of this graduation internship, their advanced management ideas and methods are worth studying. Especially in fujian shuangyong high speed project internship, give me the feeling the most profound. Box girder design for prestressed concrete simply supported box girder single box single room, 8 box girder is 13.4 m, 32.5 m long, liang across part of the beam is 2.8 m high, in the fulcrum section beam is 3.0 m high, cross the bridge to the bearing center distance 4.7 m; A total of 315.2 m3, box girder concrete cast-in-place beam using the anchor wire drawing system, the standard strength FPK = 1860 mpa, prestressed pipe using corrugated tube into the hole, anchor the OVM15-12, 13 OVM15 - two; Prestressing tensioning should be performed when the concrete strength reaches 100%. Tension according to the order of the steel beam number when tensioning, dual control, the tension stress and elongation stress is given priority to, after the completion of the tensioning with 40 cement grouting. Road bridge construction management should consider the content much, the scope is wide,Therefore, it is difficult to transfer the knowledge from the experie