Shield segment type selection method

Abstract

The invention discloses a shield segment type selection method, which adopts a multifunctional turntable to perform shield segment type selection. The multifunctional turntable comprises a left rotating ring turntable, a standard ring turntable and a right rotating ring turntable, wherein each turntable comprises a stator and a rotor which are connected through a rotating shaft, and a circle is drawn on a surface of each stator; 16 point positions are uniformly arranged on the circle of the stator along the circumferential direction; a surface of each rotor is provided with a circular ring, the circular ring is formed by connecting six areas, a surface of the circular ring of each rotor is uniformly provided with 16 point positions along the circumferential direction, the 16 point positions respectively correspond to longitudinal bolts on each duct piece after the whole-ring duct pieces are assembled, and each point position of each rotor is marked with a duct piece wedge-shaped amount; the segment assembling process is simulated by rotating the rotor of each rotating disc, the point position on the top sealing block F on the rotor corresponds to a certain point position on the stator, namely the point position for segment assembling of the ring, and the wedge amount corresponding to each point position on the rotor is the wedge amount required for segment assembling at the position.

Description

technical field [0001] The invention relates to a method for selecting shield tunnel segments, in particular to a method for selecting shield tunnel segments by using a multifunctional turntable, which is mainly used for type selection and accurate assembly of shield tunnel segments for subways. Background technique [0002] At present, segment selection is an important construction step in the subway shield construction process. At present, in the process of shield tunneling construction, construction personnel mostly rely on segment assembly design theory and spatial imagination ability to complete segment selection and assembly. In the process of segment selection, it is often impossible to quickly and correctly select the position of the capping block, resulting in wrong segment selection and point assembly errors, which seriously affect the quality of tunnel construction. [0003] At present, there is also a method of segment selection turntable to simulate the process...

AI Technical Summary

Problems solved by technology

However, this technical solution has the following problems: Although it can be seen from the turntable that each ring segment is assembled from 6 pieces, the construction personnel still cannot accurately select the segment, and the construction personnel still cannot accurately understand which point of the segment Which point is the widest and which point is the narrowest? Because the wedge shape of the segment is very small, these features cannot be seen with the naked eye alone. For beginners, it is still impossible to have an intuitive understanding of the segment, and the practicability is poor.

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