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Municipal bridge bearing platform structure for protecting existing subway tunnel and construction method thereof

An existing technology for subways and tunnels, applied in infrastructure engineering, bridges, bridge parts, etc., can solve problems such as influence, large deflection and deformation of caps, and failure to ensure normal operation of subway tunnels, etc., to reduce deflection changes and ensure normal operation Dimensional, suitable for promotional effect

Pending Publication Date: 2020-07-14
吉林建筑科技学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous increase of the upper load, the pressure on the bearing platform gradually increases, which makes the deflection and deformation of the bearing platform more and more large, which has a serious impact on the lower subway tunnel and cannot guarantee the normal operation of the subway tunnel.

Method used

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  • Municipal bridge bearing platform structure for protecting existing subway tunnel and construction method thereof
  • Municipal bridge bearing platform structure for protecting existing subway tunnel and construction method thereof
  • Municipal bridge bearing platform structure for protecting existing subway tunnel and construction method thereof

Examples

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Embodiment Construction

[0022] Such as figure 1 As shown, a kind of municipal bridge cap structure system for protecting existing subway tunnels of the present invention mainly includes: cap 1, pier and its superstructure 2 positioned at the top of cap 1, pile foundation 3 positioned at the bottom of cap 1, The cushion layer 4 is located between the cap 1 and the pile foundation, the single-hole clip anchor 5 at the tension end, the extrusion anchor 6 at the fixed end, and the tensioning device 7 located around the side of the cap 1 are used to measure the deflection and deformation of the cap Degree of deflection measuring instrument 8 and data acquisition and control system 9. Among them, such as figure 1 As shown, the bottom surface of cap 1 is required to be located below the ground 10, and the foundation pit 11 is excavated according to the construction requirements. The top of pile foundation 3 extends into the interior of cap 1 by about 10 cm and the pile foundation is driven into the solid s...

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PUM

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Abstract

The invention discloses a municipal bridge bearing platform structure for protecting an existing subway tunnel. The structure comprises a bearing platform and pile foundations, wherein tops of the pile foundations extend into the bearing platform, single-hole clamping piece anchors and fixed end extrusion anchors are arranged at tensioning ends on the periphery of a side surface of the bearing platform, positioning supports are arranged on reinforcement cage main reinforcements of the bearing platform, retard-bonded prestressed reinforcements penetrate through the positioning supports, and twoends of the retard-bonded prestressed reinforcements are anchored and formed through the single-hole clamping piece anchors and the fixed end extrusion anchors respectively. The novel bearing platform structure is simple in structure and convenient to operate, the novel bearing platform structure is provided for combination of municipal bridges and tunnels and subways, that under the same path, the two projects have feasibility is guaranteed, and tunnel operation cannot be limited by implementation of bridge projects.

Description

technical field [0001] The invention belongs to the field of construction, and in particular relates to a municipal bridge cap structure for protecting existing subway tunnels and a construction method thereof. Background technique [0002] With the continuous development of the national economy and the continuous acceleration of my country's urbanization process, the construction of municipal engineering and the development and utilization of urban rail transit have attracted the attention of relevant units. [0003] On the same path, municipal bridge projects and subway lines inevitably appear. Metro tunnels generally cross road intersections, while municipal bridges generally cross roads. Thus, there are metro tunnels and municipal bridges on the same path. [0004] Under the traditional craft, generally by adjusting the position of the subway station or the position of the municipal bridge, it is avoided to set up together on the same path. In this way, for municipal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/02E02D27/14E02D27/42
CPCE01D19/02E02D27/14E02D27/42E02D2250/0023E02D2250/0046
Inventor 张敏江袁其华常丽君张晶李强范雪单珂
Owner 吉林建筑科技学院
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