Construction method of low net clearance lower metro building enclosure diaphragm wall

A technology of enclosure structure and construction method, which is applied in the direction of foundation structure engineering, sheet pile walls, buildings, etc., to achieve the effects of strong ground adaptability, wide application range, and low cost of trenching

Inactive Publication Date: 2017-06-13
CHINA CONSTR FOURTH ENG DIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

New types of transportation such as urban rail transit will develop rapidly in the next few years, but my country's urban rail transit is still in the initial stage of development

Method used

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  • Construction method of low net clearance lower metro building enclosure diaphragm wall

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Embodiment

[0028] A ground connection wall of a subway enclosure structure under low headroom, comprising a reinforcement cage 1, H-shaped steel 2 is welded on both sides of the reinforcement cage 1, a steel plate 3 is welded on one side of the upper end of the reinforcement cage 1, and the reinforcement cage 1 is placed inside the groove of the ground connecting wall, and the inside of the reinforcement cage 1 is poured with a concrete structure layer.

[0029] A construction method for a ground connection wall of a subway enclosure structure under low headroom, comprising the following steps:

[0030] S1. Construction preparation:

[0031] Guide wall production, specific steps for guide wall construction: site leveling → measuring and placing piles → trench excavation → steel bar binding → formwork construction → concrete pouring → formwork removal → erecting internal supports → backfilling the side soil of the guide wall to make the guide wall.

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Abstract

The invention discloses a low net clearance lower metro building enclosure diaphragm wall which comprises a reinforcement cage, wherein H-shaped steel is welded on two sides of the reinforcement cage; a steel plate is welded on one side of the upper end of the reinforcement cage; the reinforcement cage is placed in a diaphragm wall forming groove; and a concrete structural layer is poured in the reinforcement cage. According to the invention, the diaphragm wall reinforcement cage is integrally manufactured, and steel plate connection is adopted, so that segmentation hoisting at underbridge low net clearance is facilitated, and after the steel plate of the reinforcement cage is dismantled into segments, positioning is accurate and welding is convenient. The invention further provides a construction method of the low net clearance lower metro building enclosure diaphragm wall. The construction method comprises the following steps: a percussion drill is selected and used for forming holes for grooving a station continuous wall, the percussion drill drills a main hole and a secondary hole sequentially, finally, a plane set-hammer is adopted for repairing the holes, and the main hole and the secondary hole are connected to form a groove section. The percussion drill is wide in range of application, simple in physical structure, high in adaptation to stratum and relative low in grooving cost. Taking construction cost, stratum condition, mechanical applicability and the like into consideration, holes formed by the percussion drill can meet requirements.

Description

technical field [0001] The invention belongs to the technical field of subway construction, and more specifically relates to a connecting wall of a subway enclosure structure under low headroom. At the same time, the invention also relates to a construction method for the ground connection wall of the subway envelope under low headroom. Background technique [0002] With the increase of the population of each city, the urban traffic problem has become a difficult and hot issue in our society. Urban traffic is not only a municipal engineering problem or a traffic technology problem, but also a comprehensive social problem. In the next few years, urban rail transit and other new means of transportation will develop rapidly, but my country's urban rail transit is still in the initial stage of development. In the construction process, how to make overall plans, optimize the layout, rationally allocate resources, purify the environment, and adapt measures to local conditions are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/20
CPCE02D5/20
Inventor 康卫欧阳苗焦浩
Owner CHINA CONSTR FOURTH ENG DIV
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