Assembling type connecting aisle structure and construction method thereof
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A technology of connecting passages and construction methods, which is applied in the direction of tunnels, tunnel linings, shaft equipment, etc.
Active Publication Date: 2017-07-14
NINGBO UNIV +2
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[0003] The technical problem to be solved by the present invention is to provide an assembled communication channel structure and its construction method with controllable quality, strong integrity with the shield tunnel, and high joint waterproof
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Embodiment 1
[0091] The assembled communication channel structure of the present invention is as figure 1 , figure 2 with Figure 4 As shown, it is mainly composed of the following structures: shield tunnel concrete segment 1, shield tunnel composite segment 2, inter-segment connection system 3, connection channel steel pipe segment 4, and connection channel concrete segment 5;
[0092] The shield tunnel composite segment 2 includes a composite segment steel pipe segment 21, a composite segment concrete pipe segment 22 and a reserved solid box 23. The outer side of the composite segment steel pipe segment 21 is connected to the shield tunnel concrete segment 1 through a connecting bolt 17 Assembled and connected and its inner side is integrally connected with the composite segment concrete pipe segment 22, and the inner side of the composite segment concrete pipe segment 22 is connected to the connecting channel steel pipe segment 4 through the inter-segment connection system 3; the reserved s...
Embodiment 2
[0099] The construction method of an assembled connection channel structure of the present invention includes the following steps:
[0100] a , Step 1, positioning of the axis 6 of the communication channel;
[0101] b , Step two, the mobile prestressed support system 7 is erected;
[0102] c , Step three, the launching sealed cabin 9 and the shield main engine 8 are installed synchronously;
[0103] d , Step four, shield machine sealing receiving system 10 installation;
[0104] e , Step 5, the launching side push type reaction frame 11 is installed;
[0105] f , Step six, start tunneling with the shield pipe jacking method;
[0106] g Step 7: Grouting and plugging the gap between the steel pipe piece 4 of the originating side connecting channel and the composite pipe piece 2 of the shield tunnel;
[0107] h , Step eight, the shield tunneling construction of the connecting channel shield machine;
[0108] i , Step 9, the shield machine enters the tunnel to receive and grouting the gap betw...
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Abstract
The invention discloses an assembling type connecting aisle structure and a construction method thereof. The assembling type connecting aisle structure is characterized by comprising a shield tunnel concrete segment, a shield tunnel composite segment, an inter-segment connecting system, a connecting aisle steel segment and a connecting aisle concrete segment. The shield tunnel composite segment comprises a composite segment steel segment section, a composite segment concrete segment section and a reserved reinforcing body box, the outer side of the composite segment steel segment section is connected with the shield tunnel concrete segment through connecting bolts in an assembling mode, the inner side of the composite segment steel segment section is integrally connected with the composite segment concrete segment section, and the inner side of the composite segment concrete segment section is connected with the connecting aisle steel segment through the inter-segment connecting system. According to the construction method, the mode of starting with a pipe jacking method and advancing with a shield method is adopted. The assembling type connecting aisle structure and the construction method thereof have the advantages the quality is controllable, the integrality with a shield tunnel is high, and joint waterproofness is high; and the starting problem of narrow and small spaces is solved, and the construction axis of a connecting aisle can also be easily controlled.
Description
Technical field [0001] The invention relates to a connecting passage structure and a construction method thereof, in particular to an assembled connecting passage structure and a construction method thereof, belonging to the field of underground engineering. Background technique [0002] According to the provisions of 19.1.22 in the "Code for Metro Design" GB50157-2003: Between two single-track section tunnels, when the continuous length of the tunnel is greater than 600m, a connecting passage should be provided. Therefore, a large number of subway tunnels are equipped with connecting channels between the upper and lower lines. At present, the connecting channel is generally horseshoe-shaped and adopts the method of freezing and strengthening by the mining method. However, this method has the following shortcomings: (1) Due to structural constraints, it is difficult to perform mechanical excavation, manual excavation speed is slow and construction Quality is not easy to control;...
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