Grating device for underground excavation engineering and manufacture method
A production method and engineering technology, applied in the field of grille, can solve problems such as difficulty in connecting the two ends of the grille, affecting the safety of the grille structure, etc., and achieve the effect of being easy to operate under harsh conditions
Active Publication Date: 2012-06-27
CHINA RAILWAY ENG CONSULTING GRP CO LTD +1
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is: serious misalignment of both sides of the grid in the later stage of the underground excavation project is inevitable, which often leads to difficulties in connecting the two ends of the grid in the later stage, affecting the safety of the grid structure
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[0022] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0023] Such as figure 1 As shown, it is a structural schematic diagram of a grille device according to an embodiment of the present invention. The device includes a first preliminary grille steel frame 1 and a second preliminary grille steel frame 2, and the outer sides of the two preliminary grille steel frames are respectively There are reserved steel plates 4, and there may be multiple steel plates, which are arranged at intervals on the preliminary grid steel frames. holes or other cavities. When it is necessary to weld the post-stage grille steel frame 3 between the first early-stage grille steel frame 1 and the second early-stage grille steel frame 2, the two ends ...
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The invention discloses a grating device for underground excavation engineering and a manufacture method. The device comprises a plurality of advance grating steel frames and later-stage grating steel frames. The later-stage grating steel frames are arranged between two adjacent advance grating steel frames, the outer sides of the advance grating steel frames are provided with preservations steel plates, two ends of the later-stage grating steel frames are provided with preservation adjusting steel ribs, and the later-stage grating steel frames are respectively welded to the preservation steel plates of two adjacent advance grating steel frames through the adjusting steel ribs on the later stage grating steel frames so that the later-stage grating steel frames are welded to the two adjacent advance grating steel frames. Later-stage gratings are respectively welded to the preservation steel plates of the two adjacent advance grating steel frames through the adjusting steel ribs so that later excavation step grating can be completely connected with advance construction gratings on two sides under the condition that dislocation exists on two sides in the shallow buried excavation engineering, and a connector has high strength, so that the grating device for the underground excavation engineering is suitable for supporting arch connection in a public buildings administration (PBA) construction method.
Description
technical field [0001] The invention relates to the technical field of grids, in particular to a grid device and a manufacturing method for underground excavation projects. Background technique [0002] At present, grids are used as supporting devices in shallow buried underground excavation projects of urban subways. The grids are set up according to the pre-procedure and post-procedure respectively. There are connections between the grille and steel frames, but due to the existence of reasonable errors in the actual construction process and local accumulation, serious misalignment on both sides of the post-connection grille is inevitable. Due to the existence of misalignment, several traditional connection methods are adopted. It often leads to more difficult connection at the two ends of the rear connection grid under harsh operating conditions. In the end, it can only be twisted and barely connected, and the joint part becomes a weak link, which seriously affects the str...
Claims
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Inventor 谭富圣陈学峰石山李汶京刘国生文罕
Owner CHINA RAILWAY ENG CONSULTING GRP CO LTD