Segment Pulling Device and Construction Method for Initial Construction of Shield Tunnel
A technology of shield tunneling and segments, which is applied in tunnels, tunnel linings, shaft equipment, etc., can solve the problems of unstable synchronous grouting grout settlement, broken segments, and broken screws, etc., to solve the problem of segment pull connection problem effect
Active Publication Date: 2018-05-04
SHANGHAI FOUND ENG GRP
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Problems solved by technology
[0004] In order to prevent the overall displacement of the formed segment to the position of the working well and cause problems such as tunnel axis deviation, segment fragmentation, water leakage, and screw being broken, the present invention provides a shield tunnel initial construction segment The pulling device and construction method are used to solve the problem of the initial construction of the shield tunnel due to the small friction between the segment and the soil, and the settlement of the synchronous grouting grout is not stable, and the back system of the shield tunnel. Technical problems such as uneven stiffness
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[0020] Below in conjunction with specific embodiment, further illustrate the present invention.
[0021] The invention relates to a segment pulling device and a construction method for initial construction of a shield tunneling method. During the initial construction of the shield tunnel, due to the small friction between the segment and the soil, the settlement of the synchronous grouting slurry is not stable, and the rigidity of the back system of the shield is not uniform, in order to prevent the formed segment This device is specially invented for the displacement of the whole to the position of the working well, which will cause the axis of the tunnel to deviate, the segment to be broken, water to leak, and the screw to be broken.
[0022] Such as Figure 1 to Figure 9 As shown, the initial construction segment pulling device of the shield tunneling method of the present invention includes the following parts: steel box 1, manual hydraulic through-hole jack 2, anchor pla...
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The invention relates to a shield tunnel initial-stage construction duct piece pulling connection device and a construction method. The construction method comprises the following steps of fixing a front box body and a rear box body by using a duct piece central screw; fixing a manual hydraulic center hole jack onto an arc-shaped steel plate in the front box body; penetrating a fining twisted steel bar in the center of the manual hydraulic center hole jack and the center of the duct piece central screw, and fixing the fining twisted steel bar and an anchor plate; extending the rest portion of the fining twisted steel bar by using a fining twisted steel bar connector until the length of the fining twisted steel bar reaches to the length required for construction; effectively connecting the fining twisted steel bar with the rear box body; stretching the fining twisted steel bar through oil pressure of the manual hydraulic center hole jack under the condition that pulling connection load is required to be checked and computed to determine length extension before stretching; fixing by using an anchor plate and a fixing anchor after construction requirements are met; and dismounting the jack. The construction method not only is suitable for the conventional earth pressure balance shield tunneling machine with the diameter of 6760 mm, but also is suitable for a slurry balance shield tunneling machine with a larger diameter; after pulling connection is finished, the jack can be dismounted, and the problem of duct piece pulling connection during shield tunnel initial-stage construction is solved effectively.
Description
technical field [0001] The invention relates to a tunnel shield construction equipment and method, in particular to a segment pulling device and construction method for initial construction of a shield tunnel tunnel. Background technique [0002] With the continuous development of shield technology, the application of shield tunnels is becoming more and more extensive, from the early road tunnels and railway tunnels to water intake and drainage tunnels, nuclear power tunnels and subway tunnels. In particular, subway tunnels are all century-old projects, and there is no room for mistakes. The normal operation of subway tunnels is related to the development process of the entire city. [0003] The main factor affecting the use of subway tunnels is the construction quality of the tunnel itself. For example, improper control of the attitude of the shield machine or measurement errors during the construction of the shield method will cause unreasonable clearance between the tunn...
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IPC IPC(8): E21D11/40
Inventor 康杰杨成龙朱文良
Owner SHANGHAI FOUND ENG GRP