Pedestrian passage frame profile steel reinforcing device and construction method thereof

Abstract

The invention discloses a pedestrian path frame profile steel reinforcing device and a construction method thereof.The reinforcing device comprises a profile steel frame and a path reinforcing structure, and the path reinforcing structure is arranged on the outer side of the profile steel frame and interacts with the inner wall of a pedestrian path; the profile steel frame comprises side frame profile steel, top frame profile steel and bottom frame profile steel, and the side frame profile steel is arranged between the top frame profile steel and the bottom frame profile steel and connected with the top frame profile steel and the bottom frame profile steel through an adjusting mechanism; the channel reinforcing structure is a reinforcing steel plate, the reinforcing steel plate is connected with the profile steel frame through a hydraulic telescopic mechanism, and a grouting anchor rod and a buffering mechanism are further arranged on the reinforcing steel plate. The device is arranged in an operation railway pedestrian path above a tunnel, during use, the stability and safety of the pedestrian path can be improved through reinforcement of the profile steel frame and the path reinforcing structure, and stratum loss caused by shield construction can be reduced, so that stratum settlement and the influence on adjacent buildings are reduced; the device has the characteristics of safety and good supporting effect.

Description

technical field [0001] The invention relates to the technical field of section steel reinforcement, in particular to a pedestrian passage frame section steel reinforcement device and a construction method thereof. Background technique [0002] With the growth of the domestic economy and the improvement of scientific research strength, the shield tunnel construction technology has become a relatively mature construction technology in tunnel and subway construction; however, in urban subway planning, shield tunnels need to pass through urban downtown areas and large residential areas In order to relieve the traffic pressure, how to ensure that each shield tunnel crossing section does not affect other buildings is the top priority of the construction; in the railway section where the shield tunnel passes, there may be operating railways and existing underground pedestrian passages above the tunnel, and the shield tunnel passes through the railway section. The stratum loss of th...

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Problems solved by technology

[0002] With the growth of the domestic economy and the improvement of scientific research strength, in the construction of tunnels and subways, the shield tunneling method has become a relatively mature construction technology; however, in the planning of urban subways, it is necessary to pass shield tunnels through urban downtown areas and large residential areas In order to alleviate the traffic pressure, how to ensure that the shield crossing section does not affect other buildings is the top priority of the construction; when the shield tunnel passes through the railway section, there may be operating railways and existing underground pedestrian passages above the tunnel, and the shield tunnel crossing It is difficult to control the stratum loss of the pedestrian passageway, resulting in a greater risk of uplift and settlement of the upper pedestrian passageway, a long rectification period in the later stage, limited countermeasures, and once the uplift is caused, it cannot be recovered; therefore, the use of the pedestrian passageway must be ensured during the shield tunneling process;

[0003] In order to ensure the stability of the shield tunnel itself and the upper underground walkway during shield construction, ensure the smooth passage of the shield tunnel, and reduce the risk of settlement of the underground walkway caused by the construction of the shield tunnel under the underground walkway, it is necessary to construct the shield tunnel Before or during the construction of the shield tunnel, certain reinforcement measures are taken for the underground pedestrian passages around the shield tunnel, that is, the pedestrian passages are reinforced; but at present, there is no corresponding mature support structure and technology for the reinforcement of the pedestrian tunnels. As a result, the problems in the above-mentioned prior art cannot be effectively solved;

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