Bolt structure for improving toughness performance of shield tunnel and bolt
A shield tunnel and bolt structure technology, applied in bolts, tunnels, tunnel linings, etc., can solve the problems of lack of seismic design, easy damage, structural discontinuity at the connection of segments, etc., to facilitate maintenance and ensure integrity. Sexual, structural integrity effects
Pending Publication Date: 2020-08-14
TIANJIN UNIV
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- Application Information
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Problems solved by technology
Although the design and construction of tunnel segment bolts has been guided by mature theories, it lacks anti-seismic design. Due to the discontinuity of the structure, the segment joints are prone to damage when subjected to earthquake loads.
Method used
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[0021] In order to further understand the invention content, characteristics and effects of the present invention, the following embodiments are enumerated hereby, and detailed descriptions are as follows in conjunction with the accompanying drawings:
[0022] See Figure 1 to Figure 3 , a bolt structure for improving the toughness of a shield tunnel, comprising a screw 1, the screw 1 comprising a polished rod portion and a threaded portion 103, the threaded portion 103 is connected with a nut 3, and the threaded portion 103 is located at the polished rod portion At both ends, the polished rod part includes a first polished rod part 101 and a second polished rod part 102 located at both ends of the first polished rod part 101; the outer diameter of the first polished rod part 101 is larger than the outer diameter of the second polished rod part 102; The thread major diameter of the threaded part 103 is equal to the outer diameter of the second polished rod part 102; a spring 4...
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Abstract
The invention discloses a bolt structure for improving the toughness performance of a shield tunnel. The bolt structure comprises a screw rod; the screw rod comprises a polished rod part and threadedparts, the threaded parts are connected with nuts, the threaded parts are positioned at two ends of the polished rod part, and the polished rod part comprises a first polished rod part and second polished rod parts positioned at two ends of the first polished rod part; the outer diameter of the first polished rod part is larger than that of the second polished rod parts; the thread major diameterof the thread parts is equal to the outer diameter of the second polished rod parts; a spring and an elastic washer sequentially sleeve the screw rod between the first polished rod part and the nuts;and the inner diameter of the spring is smaller than the outer diameter of the first polished rod part. The invention further discloses a bolt. The bolt comprises the bolt structure. The bolt structure can be used for connecting shield tunnel segments and the like, the toughness of the segments under earthquake loads is improved through the absorption effect of the high-strength springs on earthquake kinetic energy, large displacement of the segments is avoided, and the integrity of a tunnel is guaranteed.
Description
technical field [0001] The invention relates to a bolt, in particular to a bolt structure and a bolt for improving the toughness performance of a shield tunnel. Background technique [0002] At present, with the rapid development of my country's economy, the demand for underground tunnel construction is increasing day by day. The expansion of the tunnel construction area puts forward higher requirements for tunnel construction, especially in areas with high seismic fortification intensity. Improving the seismic performance of tunnels is a major issue facing tunnel construction. Since the 20th century, several strong earthquakes in the world have posed a huge threat to the safety of human life and property. Earthquake damage data show that when the seismic intensity reaches 7 degrees, the tunnel is prone to damage to varying degrees, and the repair of the structure is extremely difficult. During the 7.2 magnitude earthquake in Hanshin, Japan in 1995, the damage rate of tunn...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F16B33/00F16B35/00F16F15/067E21D11/08
CPCF16B33/00F16B35/00F16F15/067E21D11/083
Inventor 郑刚陈斯周海祚张文彬杨鹏博郭知一
Owner TIANJIN UNIV