Construction method of steel pipe concrete column
A technology for concrete-filled steel tubular columns and construction methods, which is applied to columns, piers, pillars, etc., can solve the problems of high pressure requirements of conveying pumps, large one-time pouring height, affecting concrete quality, etc., and achieves small shrinkage gap and quality assurance. , the effect of easy material processing
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[0015] Example 1
[0016] Press as figure 1 The process flow shown is used for the construction of concrete-filled steel tube columns, using 35-meter-high limb concrete-filled steel tubes to be poured diagonally. After the steel tube piles are installed and the strength of the foundation concrete reaches 75%, water pumps are used to fill the steel tubes with water . use The steel pipe is 2 meters as a section, threaded connection, the middle is slip knot, the pipe is made, and the made pipe is inserted into the steel pipe, 600mm from the bottom of the pipe, and after the concrete strength of the filling cup reaches 75%, the hopper is used for concrete pouring, and water is used. The pressure reduces the falling speed of the concrete, and the pipe is poured 3 meters above the pipe at a time, and the pipe is lifted, and the pipe is buried in the concrete not less than 2 meters, and the second concrete pouring is performed. Start the bottom pipe external vibrator, the working range ...
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[0018] Example 2
[0019] After the steel pipe pile is installed, use a water pump to fill the steel pipe with water. The pipe connected to the bottom of the hopper is inserted into the steel pipe, 600mm away from the bottom of the steel pipe. After the concrete strength of the filling cup reaches 75%, the hopper is used for concrete pouring. The pipe lifting should be slowly increased according to the falling speed of the concrete, and the lifting of the pipe should be controlled by the amount of concrete. Speed, concrete vibrating: After the first pouring, the concrete is buried 2 meters into the pipe, and the attached vibrator is activated. The vibrating time should be controlled within 1 minute to prevent excessive vibrating from causing segregation of the concrete. The main function of vibrating is to compact the concrete and reduce air bubbles in the concrete. Repeated in sequence, without stopping during the pouring process, the concrete was poured to the top of the column,...
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