A segment assembly support structure and construction method for building tunnels with three-circle shields
A shield segment and segment assembling technology, which is applied in tunnels, tunnel linings, shaft equipment, etc., can solve problems such as inability to carry out good traffic and inability to form a complete circle, so as to improve space utilization and increase smoothness Effect
Active Publication Date: 2021-07-30
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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Problems solved by technology
When the conventional circular shield machine assembles the segments, the segments form a complete circle, which has better stability; while the three-circle shield machine cannot form a complete circle when the segments are assembled, in order to maintain stability, When assembling each ring segment, internal support is required. For example, the application number is 201910099028.8, and the patent name is a support method for building a large underground complex with three circular shields. However, after the segment support is carried out, the three tunnels will It is blocked by the support and cannot carry out good traffic. It cannot be applied to occasions such as subway stations that require relatively high smoothness.
Method used
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Embodiment 4
[0044] Embodiment 4: The construction method of the segment assembly support structure of the three-circle shield building tunnel, taking the length of the I-beam member and the front and rear lengths of the four-ring segment as an example: the steps are as follows:
[0045] S1: The assembly machine on the three-circle shield machine assembles the central shield segment 1 and the side shield segment 2 at the corresponding tunnel positions, such as Figure 8 shown.
[0046] S2: The assembly machine assembles the box frame 101 at the intersection of the central shield segment 1 and the side shield segment 2, and uses five columns 303 to connect the upper box frame and the lower box on the same side Form frame to complete the assembly of one ring and three circular segments.
[0047] S3: Repeat steps S1~S2, after completing the assembly of the four-ring segment in a tunnel section, assemble the I-beam member 102 on both sides of the box frame 101 in step S2, and use the fixing p...
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The invention discloses a segment assembly support structure and a construction method for building a tunnel with a three-circle shield. The segment assembly support structure of the present invention includes a central shield segment and a side shield segment, and a side shield segment A segment support frame is provided at the intersection of the construction segment and the central shield segment, and the segment support frame is matched with the side shield segment and the central shield segment respectively. Adopting the support structure and method of the present invention can greatly increase the smoothness between the central tunnel and the side tunnel while ensuring the stability of the three-circle tunnel segment, and improve the space utilization rate of the tunnel. It is a three-circle shield construction tunnel Supported innovation.
Description
technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a segment assembly supporting structure and a construction method for building a tunnel with a three-circle shield. Background technique [0002] In tunnel construction, the lining structure is a permanent support structure to prevent deformation or collapse of surrounding rock. When the conventional circular shield machine assembles the segments, the segments form a complete circle, which has better stability; while the three-circle shield machine cannot form a complete circle when the segments are assembled, in order to maintain stability, When assembling each ring segment, internal support is required. For example, the application number is 201910099028.8, and the patent name is a support method for building a large underground complex with three circular shields. However, after the segment support is carried out, the three tunnels will Blocked by the support, it ...
Claims
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IPC IPC(8): E21D11/08E21D11/10E21D11/40
CPCE21D11/083E21D11/105E21D11/40
Inventor 薛广记贾连辉李治龚廷民贺飞范磊李洋程鹏冯猛冯琳袁征
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD