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Segment structure with longitudinal strands and transverse shear keys and method of using same for constructing shield tunnel

A shear key and segment technology, applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve problems such as vertical displacement

Inactive Publication Date: 2016-06-29
KOREA INST OF CIVIL ENG & BUILDING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, cross-sectional joints are susceptible to vertical displacement due to differential pressure induced by the ground

Method used

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  • Segment structure with longitudinal strands and transverse shear keys and method of using same for constructing shield tunnel
  • Segment structure with longitudinal strands and transverse shear keys and method of using same for constructing shield tunnel
  • Segment structure with longitudinal strands and transverse shear keys and method of using same for constructing shield tunnel

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Embodiment Construction

[0069] A method of constructing a shield tunnel using the segment structure having longitudinal strands and transverse shear keys of the present invention will be described in detail with reference to the drawings.

[0070] First, the basic concept of the invention for inserting and anchoring longitudinal strands in segments assembled in a z-shape is as follows.

[0071] The length of the longitudinal strand is almost the same as the length of the arrangement of the four longitudinal segments. This is because the longitudinal strands are connected and anchored in units of four longitudinal segments. A unit of longitudinal stranded wire is four segment columns, such as Figure 10 explained. Figure 10 its about Figure 9 The base segment A1 in the fourth row of segments in the segment assembly is used to schematically illustrate the diagram of four longitudinal strands.

[0072] For example, from Figure 10 The longitudinal strands from the strand insertion and fixation sp...

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Abstract

The present invention enables each segment forming two central passages and two end passages to be arranged vertically sequentially and adjacently in each column, wherein: the horizontal segments at four columns are set determined as a unit so that the strands are inserted, tensioned and placed therein; only one strand is placed in each segment so that only the corresponding segment is placed and fixed; with the remaining three segments, Via the passing path, the segments at the other columns are sequentially placed and fixed in the same manner as above, thereby forming a basic reaction wall through which all the four twisted wires pass, and at the same time, passing through all The remaining three stranded wires sequentially and easily place and fix the segments at the other rows with respect to the structurally stable base reaction walls; and form the base reaction walls of the segments, and by repeating the above Steps to sequentially place and fix the other columns according to the base reaction wall together with the drilling operation. Thus, by means of said features, the invention allows assembling said segments in an efficient and economical manner.

Description

technical field [0001] The present invention relates to segmental structures having longitudinal strands and transverse shear keys and methods of using said structures to construct shield tunnels, and more particularly to forming two central penetration paths and two end penetration paths The segments are sequentially arranged in columns so as to be adjacent in the longitudinal direction, the longitudinal strands are inserted, prestressed, and anchored in four columns in units of longitudinal segments, and only a single longitudinal strand is anchored at each Of the segments, so that only said segment is anchored and fixed, the three remaining longitudinal strands pass through the penetration path and allow the above method to be used to sequentially anchor and fix segments located in other columns, forming The segment foundation through which all four longitudinal strands penetrate adjoins the test wall and at the same time the three remaining longitudinal strands adjoin the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/06
CPCE21D11/083E21D9/06E21D11/08
Inventor 马相准
Owner KOREA INST OF CIVIL ENG & BUILDING TECH
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