【文章內(nèi)容簡介】 ce of the invitation after the Commissioner of the next process. 3, steel processing and installation First test of reinforcing bars, meet the requirements for steel processing, welding the reinforced using doublesided welding, welding length of not less than 5d, smaller internal forces at the joint set, and staggered layout, welding joint area of not more than 50%.Based on the design drawings, will be reinforced in the next cutting plant material transported to the scene after the banding. Roof, floor, there are a large number of embedded web bellows, in order not to damage the bellows, welded bellows embedded all before, try not to weld pipe after installation, when the general location of steel bars and corrugated pipe into conflict whenMobile reinforcing bars, the appropriate and accurate positioning steel mesh installed to ensure accurate location of pipelines. Steel banding ago by surveyors retest the template location and elevation plane, which includes elevation calculated by the deflection of the hanger of the camber set, correct the rear of the steel banding. To enable accurate data protection layer, protective layer pads are not crushed, by setting plastic box pad pad construction. 4, bellows processing installation Position as shown in the drawings according to design layout bellows, and with the positioning ribs fixed, placed after the pipe must be smooth, nonchine. Length of all pipe joints 5d prevail, the use of corrugated pipe larger size socket to tighten the symmetry, and good joints wrapped with adhesive tape to prevent concrete slurry mixed with fine, when the pipeline location and conflict with nonprestressed reinforcement to takepipelinebased principles, the appropriate location of the mobile reinforcement to ensure that the correct pipe. Bellows the end of the embedded anchor plate should be perpendicular to the channel center line, and does not produce displacement during the concrete is installed, it will cover its end to prevent water or other debris to enter. Construction workers, mechanics, pipe vibrator can not crash. Before pouring concrete pipe carefully examined whether there are major holes in the pipe inspection, the joint is connected firmly, sealing, pipeline location is biased, strict check is correct, the method used air pressor ventilation pipe debris removal to ensure the smooth pipe. 5, Tongjiao Notes and health Used concrete pump concrete pumping, pouring time, first floor, after the web, and then the roof, symmetrical structure for each T, hierarchical placement, each 30cm, pouring from the front to the back end, the initial setting of the first layer of concretesublayer before the pletion of concrete placement, to ensure that no cold joints between layers, concrete vibrator vibrator in strict accordance with the role of scope, to prevent leakage pound, pound, and due to excessive vibration, when the prestressed pipeintensive, gap hours, with a smalldiameter of 30 types of plugin vibrators, vibrator in the steel must not drag on the flat, noncollision prestressed, template, reinforced。 concrete vibrator for the first time after wiping flat surface, concrete roof should be a second hand side,the second hand side should be conducted before the initial setting of concrete, causing surface water to prevent the early dry, concrete pouring has been pleted, covering wet sacks or straw bags for conservation. 6, tension and duct grouting La (1) Preparation of box pouring a sufficient quantity of test block with the conditions of health conditions must be in the same strength of test block after 100% of design strength. (2) has a qualified team of prestressing operations to tension, tension before the tension response and the hydraulic jack used in precision control of the check table, calibration, and stretching equipment to uniform done on the strand and anchorage test. (3) before the clear face tension, pressure plates and steel beams twisted around the mortar, sampling tests according to relevant regulatory requirement