A self-resetting prestressed segment structure and its assembly method
A technology of prestressed pipe and assembly method, which is applied to shaft equipment, bolt installation, earthwork drilling, etc., can solve the problems of poor seismic toughness of shield tunnel structure and easy tension deformation at joints of segments, etc. The effect of improving the toughness between rings
Active Publication Date: 2021-12-07
SHENZHEN UNIV
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a self-resetting prestressed segment structure and its assembly method in view of the above-mentioned defects of the prior art, aiming at solving the Segment joints are prone to tensile deformation, resulting in poor seismic toughness of the shield tunnel structure
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[0028] In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0029] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.
[0030] The prefabricated concrete segment used as the tunnel lining is the main supporting structure of the tunnel, and its quality directly affects the stability and waterproof performance of the entire subway tunnel...
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The invention discloses a self-resetting prestressed segment structure and an assembly method thereof, comprising: a self-resetting prestressed segment, a plurality of first reserved pipes, a plurality of second reserved pipes and a prestressed connection assembly, a plurality of first prestressed The reserved pipes and several second reserved pipes are arranged in the self-resetting prestressed segment, and the prestressed connection assembly passes through the plurality of first reserved pipes and several second reserved pipes during the assembly process of the self-resetting prestressed segment, The anchoring and prestressing tensioning are carried out through the prestressing anchoring component and the prestressing tensioning component. The segment structure of the application is simple, easy to manufacture, and convenient to use. By anchoring and prestressing the prestressed connection components interspersed in the first reserved pipeline and the second reserved pipeline, the prestressed segment structure is subjected to external force loads. Before the action, the prestress is artificially generated. Under the action of an earthquake or a huge external force, it can offset the tension deformation at the joints of the segments and improve the inter-ring toughness of the shield tunnel structure.
Description
technical field [0001] The invention relates to the technical field of urban subway shield tunnels, in particular to a self-resetting prestressed segment structure and an assembly method thereof. Background technique [0002] With the continuous development of urban subway tunnel construction, more and more cities have opened urban subway lines. The shield method is currently a more advanced construction method for subway tunnels. The precast concrete segment used as the tunnel lining is the main support of the tunnel. The quality of the structure directly affects the stability and waterproof performance of the entire subway tunnel. Under the action of earthquake or huge external force, the existing shield segments are prone to tensile deformation at the segment joints, resulting in poor seismic toughness of the shield tunnel structure. [0003] Therefore, the prior art still needs to be improved and developed. Contents of the invention [0004] The technical problem to ...
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IPC IPC(8): E21D11/08E21D11/40E21D21/00
CPCE21D11/08E21D11/40E21D21/008
Inventor 沈俊包小华杨小荣罗磊崔宏志陈湘生
Owner SHENZHEN UNIV