Connecting structure of externally-embedded groove of subway shield segment and construction method
A technology of shield segment and connecting structure, applied in tunnels, tunnel linings, underground chambers, etc., can solve the problems of vacant waste of pre-embedded channels, large one-time investment in projects, etc., and achieve difficult and beautiful appearance. Effect
Inactive Publication Date: 2018-11-06
靳世鹤
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The invention aims at the non-replaceable pre-buried channel of the existing shield segment, which makes the fatigue, anti-corrosion and other technical indicators require a long service life of one hundred years, which brings a large one-time investment in the project, and about 50% of the pre-buried channel during the installation of electromechanical equipment In order to solve the problem of waste of vacant tunnels, we provide a subway shield segment embedded channel connection structure that can not only meet the requirements of electromechanical equipment installation, but also can be replaced and installed in sections in the tunnel. A Safe, Reliable, Simple and Easy Construction Method for Subway Shield Segment Embedded Channel Connection Structure
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0027] The first phase of the Lanzhou Metro Line 1 project adopted the shield segment pre-embedded channel technology on the whole line in 2014. About 30,000 rings of shield segment pre-embedded channels were used, and the channels were pre-embedded in the entire ring of the shield segment. The quantity is about 5.1 million meters, and the total cost is nearly 80 million. The inner diameter of the shield segment of Lanzhou Metro is 5.5m, and the full ring length of the pre-buried channel is 17.3m. When installing electromechanical equipment in the tunnel, only half of the pre-buried channel (about 9m) is used, and the rest is completely wasted. Due to the uncertainty of the assembly point of the segments in the construction of the structure, it is difficult to make the channel pre-embedded in sections according to the requirements of the installation of electromechanical equipment. A large number of pre-buried channels are idle and wasted.
[0028] In the first phase project ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a connecting structure of an externally-embedded groove of a subway shield segment and a construction method, and belongs to the field of subway tunnel construction. The connecting structure comprises the shield segment, an embedded anchor rod, the externally-embedded groove and a special nut. The externally-embedded groove is embedded into a reserved groove of an inner arcsurface of the shield segment, a reserved hole is formed in the middle of an arch back of the externally-embedded groove, the embedded anchor rod is independently pre-embedded into the shield segment, the tail end of a rod body of the embedded anchor rod is a screw part with an external thread, and the screw part penetrates out of the reserved hole of the arch back of the externally-embedded groove and is tightened with the special nut so as to fix the externally-embedded groove and the embedded anchor rod. The head diameter of the special nut is greater than the spacing of an groove openingof the externally-embedded groove, an internal thread is arranged at the tail portion of the special nut, and the special nut can extend into the externally-embedded groove and can be in tightened connection with the screw part of the pre-embedded anchor rod. The externally-embedded groove is attractive in whole structure, and can be accurately segmented and installed according to the requirementsof mechanical and electrical equipment, and meanwhile, the externally-embedded groove can be replaced.
Description
technical field [0001] The invention belongs to the field of subway tunnel construction, and in particular relates to a connecting structure and a construction method of an externally embedded channel of a subway shield segment. Background technique [0002] After the construction of the subway tunnel is completed, in the stage of mechanical and electrical installation, the traditional method is to drill holes in the shield segment or the second lining wall of the underground excavation tunnel, and implant chemical anchor bolts to provide fulcrums. For reasons such as difficult construction work, short service life of chemical anchors, and high maintenance costs, pre-embedded channels were used to replace chemical anchors in foreign countries in the 1930s. However, due to technical blockade and other reasons, the core technology of foreign pre-embedded channels is difficult In recent years, domestic subway shield tunnels have begun to adopt pre-buried channel technology. Th...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/08E21D9/06E21D21/00
CPCE21D9/06E21D11/08E21D21/008
Inventor 靳世鹤
Owner 靳世鹤