A construction method and its structure for accurate centering control of bridge swivel construction

Abstract

The invention belongs to a bridge turning construction accurate centering control construction method and a structure thereof. According to the method, vertical visible laser rays emitted by a laser demarcation device are used for finishing accurate centering of a turned bridge piece in the bridge piece turning construction process. The adopted structure comprises the laser demarcation device, the turned bridge piece, a support on a side span cast-in-place section and a temporary buttress, wherein the laser demarcation device is used for finishing the accurate centering control over the turned bridge piece in the bridge piece turning construction process, the laser demarcation device is located on the support on the side span cast-in-place section outside the rotating circumference of the turned bridge piece in a centering manner, and the horizontal rays emitted by the laser demarcation device and the center line of a bottom board of a cross section at the side span beam end of the turned bridge piece are located at the same elevation. By the adoption of the method and the structure of the method, in the bridge body turning construction process, the method and the structure have the beneficial effects that a bridge body is adjusted and measured rapidly, accuracy is high, the construction speed is high, the workload and labor are saved, the construction cost is low, safety is high, and the method and the structure are simple and easy to learn and high in popularization.

Description

technical field [0001] The invention belongs to a precise centering control construction method and structure of bridge swivel construction. Background technique [0002] At present, most of the bridge parts swivel construction technology is used to cross the existing railway line. The construction safety management requirements for the existing line are strict, and the approval process is complicated. It is required that the construction must be completed within a given time, otherwise the transportation safety of the existing railway line will be affected. . [0003] The traditional swivel construction accuracy control requires technicians to measure and calculate the swiveled bridge parts with a total station and a level, and then notify the site personnel to make point-controlled adjustments to the beam body. Because the measurement and calculation require a lot of At the same time, technicians are required to take measuring instruments to the bridge to enter the existi...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the bridge parts swivel construction technology is used to cross the existing railway line. The construction safety management requirements for the existing line are strict, and the approval process is complicated. It is required that the construction must be completed within a given time, otherwise the transportation safety of the existing railway line will be affected.

[0003] The traditional swivel construction accuracy control requires technicians to measure and calculate the swiveled bridge parts with a total station and a level, and then notify the site personnel to make point-controlled adjustments to the beam body. Because the measurement and calculation require a lot of At the same time, technicians are required to hold the measuring instruments on the bridge to enter the existing line, which has certain potential safety hazards; there are deficiencies in the adjustment and measurement of the beam body, poor precision, slow construction speed, laborious and laborious, high construction cost and poor safety.

Images