A second lining trolley for tunnel transition section
A technology for the transition section and tunnel, which is applied in the field of the second lining trolley in the tunnel transition section, which can solve problems such as troublesome disassembly, and achieve the effects of reduced replacement, stable support, and shortened construction period
Active Publication Date: 2021-05-14
GUIZHOU UNIV
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Problems solved by technology
However, this method is more troublesome to disassemble, and is not suitable for the situation where the tunnel construction size is constantly changing.
Method used
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[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but not as a basis for limiting the present invention.
[0021] Embodiment of the present invention: a second lining trolley in the transition section of the tunnel, as attached Figure 1-5 As shown, a gantry body 1 is included, and the gantry body 1 is the same as the gantry body of the second lining trolley of the standard section. Connection, since the size of the left side of the gradual tunnel section remains unchanged, and the size of the right side is gradually changed, so the left support of the original standard section second lining trolley is maintained, and the right and upper devices are designed and replaced. The specific design and replacement include: the top of the gantry body 1 is connected to the top formwork 5 through the transverse support 4, the transverse support 4 includes a cross bar, both ends of which are connected to the two en...
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The invention discloses a two-lining trolley for a tunnel gradient section, which comprises a gantry frame body, the left side of the gantry frame body is connected with a left side template through an adjustable fixed support, the top of the gantry frame body is connected with the top template through a lateral support, and the gantry frame body is connected with the top template through a horizontal support. The right side of the body is sequentially provided with a plurality of retractable hydraulic supports from top to bottom, the other end of the retractable hydraulic support is connected with the retractable diagonal brace, and the head end of the retractable diagonal brace is movably connected with the top right side of the gantry body , the retractable diagonal strut is connected with the right template through a plurality of detachable struts. For the right side and the upper part of the trolley corresponding to the position of the gradual change section, the present invention adopts the installation of retractable hydraulic support, retractable diagonal strut and horizontal and vertical movable lateral support, which can effectively reduce the The lining steel formwork caused by the change of the tunnel size is not easy to support and the support costs the construction cost. At the same time, it also improves the construction efficiency and ensures the stability of the entire support system and the safety of the construction.
Description
technical field [0001] The invention relates to a second lining trolley for a tunnel transition section, belonging to the technical field of tunnel construction equipment. Background technique [0002] In one of the tunnel projects we participated in, the excavation size of the tunnel gradually changed from 13.5m to 14.5m in the 100m section. The ordinary second-lining trolley is only suitable for the lining of the standard section of the tunnel. In the gradual section, the existing second-lining platform Cars are not applicable. If a support is erected on the basis of the original second lining trolley, it will consume manpower and time and affect the construction progress. At present, the second-lining trolley in the gradual tunnel section is rarely involved. The second-lining trolley for the widened tunnel is similar to that, and the widening formwork is provided on the outer formwork of the standard cross-section tunnel through a widening support frame. . However, thi...
Claims
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IPC IPC(8): E21D11/10
CPCE21D11/102
Inventor 刘宁宋强吴志刚蔡炜谢焱周晶韩战洋陈凯江飘
Owner GUIZHOU UNIV