1) The initial elevation error of the bolt is caused by the sagging of the rope used during construction and the measurement. 2) Because the main ribs connected are subjected to impact loads when pouring concrete, the main ribs sink and drive the bolts to sink. The construction measures to be taken shall be strictly in accordance with the basic principles of the first control, and the error adjustment of the control measurement results shall be made carefully.
The accuracy of the bolt position is guaranteed by the various processes of the construction.
When laying the line, the principle of ensuring the accuracy of each process should be taken. The baselines required to ensure the accuracy are given in time. In addition, in order to ensure the accuracy of measuring the pay-off line, the construction site surveying personnel must be trained to correctly use the instrument and the steel ruler in the line-off work, verify the instrument according to the regulations, verify the steel ruler, and ensure the measurement of the pay-off line. The results are accurate.
The steel bar project strictly controls the size of the steel bar, in order to make the steel bar binding form accurate, it is necessary to strictly control the processing, send experienced personnel to be responsible, carry out regular or irregular sampling, implement reward and punishment measures, and ensure the quality of steel works. In order to prevent the displacement of the base of the independent equipment, it is necessary to take corresponding preventive measures and the ability to crack steel. In the cast-in-place concrete structure, a “post-casting belt†section is set for pouring to reduce the temperature stress and shrinkage deformation of the concrete during construction.
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