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Foundation ditch construction method in water for supporting circuit purlin

A construction method and technology for foundation pits, which are used in infrastructure engineering, excavation, ships, etc., can solve the problems of slow time for building earth embankments, unfavorable stability of dock cofferdams, and large erosion of earth embankments.

Active Publication Date: 2008-10-22
NO 2 ENG CO LTD OF CCCC THIRD HARBOR ENG CO LTD +1
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AI Technical Summary

Problems solved by technology

The above-water foundation pit is a water area independent of the temporary embankment. For the construction of various procedures in the foundation pit, the construction channel was originally considered to build an earth embankment from the temporary embankment to the dock mouth, but the construction time of the earth embankment is relatively slow, and this place is in the water level fluctuation zone , the water flow has a great impact on the earth embankment. Although there are measures such as slope protection, cumbersome maintenance work is still unavoidable, which is not good for the stability of the earth embankment; after the earth embankment is completed, a relatively closed water area is formed between the earth embankments. The stability of the dock cofferdam is also unfavorable

Method used

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  • Foundation ditch construction method in water for supporting circuit purlin
  • Foundation ditch construction method in water for supporting circuit purlin
  • Foundation ditch construction method in water for supporting circuit purlin

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Embodiment Construction

[0049] According to the present invention, the 1# and 2# docks of the No. 1 shipbuilding base of China Shipbuilding Base are two large-scale dock projects. The construction of the pit support enclosing sandalwood includes the plane layout of the foundation pit construction on the water, the concrete ring beam, the support construction and the steel support construction technology. As well as the use of the trestle bridge, the height of the temporary trestle bridge is set at +4.5m, the width of the 1# and 3# trestle bridges is 1.3m, and the width of the 2# trestle bridge is 2.6m. A horizontal passage is set in the first support plane inside the foundation pit. Safety railings are arranged on both sides, and safety nets are laid under the passage; vertical escalators are installed between the two adjacent layers of support upstream and downstream of the dock mouth to form a construction passage through the entire dock mouth.

[0050] Two fixed tower cranes are arranged in each o...

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Abstract

The invention discloses a construction method for supporting enclosing purlins of foundation pits in water area, which relates to a supporting structure for building the foundation pits. The method mainly comprises plane arrangement of foundation pit construction in water area, concrete girt and supporting construction, and a steel supporting construction process. Finished partial hoist runway pile foundations are utilized to serve as the basis, a foundation pit is connected with land area by adopting a method of building a temporary trestle according to the local water level and the service conditions of the trestle, a combination mode that a tower crane is arranged at the upper part of the foundation pit and a crane ship is arranged outside the foundation pit, is used to hoist a large quantity of materials, a moving platform is placed on a first concrete brace by channel steel, a wood board is paved on the channel steel, an operating platform is used for segmented pavement, and is moved to the next section for repeated use when the construction at one section is finished, thereby finishing the construction method for the supporting enclosing purlin of the foundation pit in water area through the steps of concrete girt and concrete supporting construction and steel supporting construction.

Description

Technical field: [0001] The invention relates to a support structure for a building foundation pit, in particular to a construction method for supporting and enclosing a foundation pit above water. Background technique: [0002] At present, the construction of the support enclosure of the foundation pit above water usually includes the construction plane layout of the foundation pit above water, the processes such as concrete ring beam, support construction and steel support construction. The above-water foundation pit is a water area independent of the temporary embankment. For the construction of various procedures in the foundation pit, the construction channel was originally considered to build an earth embankment from the temporary embankment to the dock mouth, but the construction time of the earth embankment is relatively slow, and this place is in the water level fluctuation zone , the water flow has a great impact on the earth embankment. Although there are measures...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04B63C1/08
Inventor 钟梅华汤涛孙伟明朱九仪张文渊徐桂强黎亚舟张敏赢章剑果施军刘明权姚娟强包益平杨东金卫林朱立新陈月娇
Owner NO 2 ENG CO LTD OF CCCC THIRD HARBOR ENG CO LTD
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