Shield tunnel segment joint intelligent anti-seepage structure and using method thereof
A technology for shield tunnel segments and tunnels, applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve problems such as performance degradation of anti-seepage structures, and achieve the effects of improving long-term effectiveness, improving safe use performance, and simple facilities
Pending Publication Date: 2021-12-28
HOHAI UNIV
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Problems solved by technology
In the design of the anti-seepage structure of the tunnel, it is necessary to consider the acquisition of the surface contact stress of the elastic sealing structure of the tunnel, but the anti-seepage structure of the commonly used gaskets based on EPDM or neoprene has significant deficiencies; In the design of the anti-seepage structure of the tunnel, the long-term durability of the elastic sealing structure material of the tunnel needs to be considered, but the method currently used to deduce the deterioration of the performance of the anti-seepage structure based on the deterioration of the bulk properties of the polymer material has significant shortcomings; at the same time , the change in the performance of the anti-seepage structure is also a concern of the owners and engineers
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[0021] like Figure 1~3 As shown, an intelligent anti-seepage structure of shield tunnel segment joints, including: concrete segment 1, connecting optical fiber 3, rubber gasket 4, intelligent polymer composite flexible rod 5, adhesive material 7, rubber isolation tube 8, The optical fiber sensor 9 and the anchoring section 10; the shield segment is connected to each other through the connecting optical fiber 3, the rubber gasket 4 is arranged in the circumferential direction in the groove around the precast concrete segment 1, and the intelligent polymer composite flexible rod 5 is built in the rubber seal The hole reserved by the pad 4 is arranged in the ring direction of the precast concrete segment 1 along with the rubber gasket 4, and the bonding material 7 is laid in the hole reserved by the rubber gasket 4 and covers the intelligent polymer composite flexible rod 5, and the intelligent polymer composite The flexible rod 5 is embedded in distributed long-gauge optical fi...
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The invention discloses a shield tunnel segment joint intelligent anti-seepage structure and a use method thereof. A rubber water stop structure system with a built-in intelligent polymer composite flexible rod is adopted, long-term effectiveness of reinforcing performance is greatly improved, the structure adapts to the use characteristics of tunnel engineering, and the service life of a tunnel is prolonged; the intelligent polymer composite flexible rod based on distributed optical fiber sensing is adopted, long-term health monitoring can be implemented after the intelligent polymer composite flexible rod is arranged in the anti-seepage structure, the safe use performance of the structure is improved, engineering accidents are reduced, and personal and property safety of people is guaranteed; and equipment and facilities are simple, the market competitiveness is high, and technical reserve is provided for reinforcing and monitoring integration of a tunnel structure in the future.
Description
technical field [0001] The invention relates to the technical field of intelligent reinforcement of shield tunnels, in particular to an intelligent anti-seepage structure of segment joints of shield tunnels and a method for using the same. Background technique [0002] In recent years, with the continuous development of shield tunneling technology in my country, the shield tunneling method has gradually become the main construction method for urban subway tunnels, traffic tunnels, and water tunnels in my country. The shield tunnel structure is assembled by prefabricated segments, and each segment is equipped with a waterproof system, which is then combined into an overall waterproof system. However, the underground conditions are complex, and changes in the groundwater level not only have a great influence on the external load of the structure, but also have an impact on the sealing performance of the tunnel segment. Since the tunnel is assembled from prefabricated segments...
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IPC IPC(8): E21D11/08E21D11/38
CPCE21D11/083E21D11/385Y02E10/20
Inventor 王媛陈龙任杰冯迪方腾卫徐文秀郭圣洁
Owner HOHAI UNIV