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Earthquake liquefaction and suspension resisting structure and method for metro station

A subway station, anti-earthquake technology, applied in basic structure engineering, soil protection, sheet pile wall and other directions, can solve the problems of bolt pullout resistance drop, strength loss, high cost, increase the pullout bearing capacity, Avoid structural damage and enhance the effect of pullout resistance

Pending Publication Date: 2018-09-14
JINAN RAILWAY TRANSPORT GRP CO LTD
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Problems solved by technology

[0005] (1) The mechanism of the anchor is that the friction between the anchor and the soil layer provides tension for the anchor. However, when the surrounding soil liquefies, the strength of the soil is lost, resulting in a decrease in the friction between the anchor and the liquefied soil. Then the pull-out force of the anchor decreases, and the anti-floating anchor loses its effect.
[0006] (2) Most of the existing anchors are continuous anchors, that is, they are designed consistently within the length of the anchor, which lacks adaptability to liquefied soil layers. At the same time, consistent anchors are used, and the cost is high

Method used

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  • Earthquake liquefaction and suspension resisting structure and method for metro station
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  • Earthquake liquefaction and suspension resisting structure and method for metro station

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Embodiment Construction

[0035] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0036] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0037] As introduced in the background technology, there are deficiencies in the prior art. In order to solve th...

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Abstract

The invention discloses an earthquake liquefaction and suspension resisting structure and an earthquake liquefaction and suspension resisting method for a metro station, solves the problem that in theprior art the metro station easily loses anti-pull force after a soil layer is liquefied, and achieves the beneficial effect of enhancing the anti-pull force of a bed rock section. The earthquake liquefaction and suspension resisting structure comprises a plurality of anti-suspension anchor rods; one end of each anti-suspension anchor rod is connected with the sidewall of the metro station or a base plate of the metro station; the other end of each anti-suspension anchor rod is arranged at a bed rock ground layer, wherein each anti-suspension anchor rod adopts a segmented type anchor rod; thecircumferential side of the second section, inserted into the bed rock ground layer, of each anti-suspension anchor rod is provided with high-strength mortar; and the circumferential side of the first section, inserted into a liquefiable ground layer, of each anti-suspension anchor rod is provided with common mortar.

Description

technical field [0001] The invention relates to the field of underground engineering, in particular to a structure and method for anti-earthquake liquefaction and floating of subway stations. Background technique [0002] The subway has become an indispensable means of transportation in large and medium-sized cities, and the construction of the subway is also the most effective and direct measure to solve urban congestion. According to the "2016 Statistics and Analysis Report on Urban Rail Transit" released by the China Urban Rail Transit Association, by the end of 2016, a total of 30 cities in mainland China had opened urban rail transit operations, with a total of 133 lines and a total length of 4152.8 kilometers. Among them, the subway is 3168.7 kilometers, accounting for 73.7%. At the same time, a total of 58 cities' urban rail network has been approved, the scale of urban rail under construction and planning has been further expanded, investment has continued to grow, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D31/12E02D5/74E02D15/02E02D3/10
CPCE02D3/10E02D5/74E02D15/02E02D31/12
Inventor 修春海张西文孙崇芳司炜
Owner JINAN RAILWAY TRANSPORT GRP CO LTD
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