大桥施工(国外英文资料).doc

大桥施工(国外英文资料) Bridge construction There are 1 bridges in this section, that is, the rock bridge, the center post No. K110+268, is a span of 30 meters of T beam structure, the bridge length of 156 meters. The upper bridge is simply supported to continuous prestressed T beam, the lower beam, column, beam, floor, bored pile foundation. Project number: T beam 60, pile 32, 12 beam, 16 columns. Drilling data show that the soil under the riverbed is sandy soil and gravel soil, and the bedrock is weakly weathered shale. Set the bridge in the left of the line. The main construction schedule is from January 1, 2003 to April 1, 2004. (1) construction of bored piles; The contract section has 32 bored piles, and the diameter is 180cm and 120cm, all of them are rock socketed piles. It is scheduled for completion in March 2003 10. According to the geological condition at the bridge site of the bid section, the drilling equipment for the bored pile construction adopts impact drilling, and the individual short bored pile can be used as a rotary drilling rig (with a roller bit). The use of a crane reinforcement cage, concrete concrete mix automatic metering and mixing station, concrete transporting trucks concrete chute with tremie concrete. In order to avoid the pollution of the river, set the mud pool, the mud into the mud pool, after precipitation by pile completion, digging mud, stone for fill river flow. The construction procedure of bored concrete for embedment of steel casing, driller, rushed (drilling), the first clear hole, reinforcement cage, concrete pipe under second, clear the pile to pile head and pile foundation inspection chiseling concrete into the hole, pouring underwater. Construction process see Figure 5-3 bored pile construction process flow chart 1, pile location, drill in place The site of the bridge site is leveled, the sundries are removed, the soft soil is replaced, and the compaction is compacted. The total station instrument is used to accurately measure th