Assembled integral shield tunnel structure and its construction method
A technology for shield tunnels and tunnel structures, which is applied in tunnels, tunnel linings, shaft equipment, etc., can solve the problems of weak structural deformation resistance and low joint stiffness, and achieve improved bending and shear resistance, good waterproof performance, The effect of convenient construction
Active Publication Date: 2022-02-22
BEIJING URBAN CONSTR DESIGN & DEV GRP CO
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Problems solved by technology
[0004] For this reason, in view of the above-mentioned defects, the designer of the present invention, through painstaking research and design, and comprehensive experience and achievements in related industries for many years, researched and designed an assembled integral shield tunnel structure and its construction method, by setting two The one-time pouring composite component overcomes the shortcomings of the existing shield tunnel structure, such as low joint stiffness, insufficient transverse and longitudinal overall stiffness of the structure, and weak structural deformation resistance.
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[0034] see Figure 1 to Figure 8 , shows the assembled monolithic shield tunnel structure and its construction method of the present invention.
[0035] The assembled integral shield tunnel structure includes multiple prefabricated shield segments, multiple secondary pouring composite components and waterproof elements, see figure 1 with figure 2 , the multi-piece prefabricated shield segment 10 is a concrete member with a T-shaped longitudinal section, which includes a segment flange 11 with a larger width at the outer edge and a segment web 12 with a smaller width at the inner edge , wherein, in prefabrication, each shield segment 10 is a curved member with the same diameter and a certain curvature.
[0036] Such as image 3 with Figure 4 As shown, along the longitudinal direction of the shield tunnel structure, a plurality of T-shaped prefabricated shield segments 10 are connected end to end to form a plurality of shield segment rings 20, and the segment longitudinal ...
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An assembled integral shield tunnel structure and its construction method. The tunnel structure includes a plurality of prefabricated shield segments and a plurality of secondary pouring composite components, and the shield segment is T-shaped concrete in a longitudinal section. Components, which include a upstream part with a larger width on the outer edge and a backwater part with a smaller width on the inner edge. Each shield segment is a curved member with the same diameter and a certain curvature, and multiple shield segments are connected end to end Multiple shield segment rings are formed, and the multiple shield segment rings are closely connected to form the upstream surface of the circular shield tunnel structure, and the tunnel structure is formed between the backwater parts of the shield segments of adjacent shield segment rings The secondary pouring concrete superimposition area, in which the secondary pouring concrete component is formed, the inner surface of the secondary pouring concrete component and the backwater part of the shield segment of the shield segment ring The inner surfaces together form the backwater surface of the annular tunnel structure; thus, the present invention can effectively solve the defects of the prior art, and has reasonable force, convenient construction, strong deformation resistance and good waterproof performance.
Description
technical field [0001] The invention relates to the technical field of underground tunnel structure engineering, in particular to an assembled integral shield tunnel structure and a construction method thereof. Background technique [0002] Prefabricated assembly technology has been widely used in my country's above-ground building structures because of its environmental protection, energy-saving, green, and high degree of mechanization. In underground structures, prefabricated assembly technology has been excellently applied in shield tunnel structures. However, under the dual effects of the long-term natural environment and the use environment, the built shield tunnels have problems such as uneven settlement, excessive deformation, wrong platform, water leakage, and excessive diameter convergence to varying degrees. The tunnel is located in the ground, and the ground conditions are complex, and the segments of the shield tunnel are only connected by bolts, the stiffness o...
Claims
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IPC IPC(8): E21D11/08E21D11/10E21D11/38
CPCE21D11/08E21D11/10E21D11/385
Inventor 贾永刚李霞程雯
Owner BEIJING URBAN CONSTR DESIGN & DEV GRP CO