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Relay unearthing method and structure for deep foundation pit platform under reverse construction condition

A technology of deep foundation pit and reverse method, which is applied in the direction of infrastructure engineering, excavation, construction, etc., can solve the problems of low work efficiency, high cost, unstable excavation, etc., and achieve simple construction technology, low excavation cost, and little impact on construction Effect

Inactive Publication Date: 2012-10-31
CHINA CONSTR FOURTH ENG DIV
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Problems solved by technology

However, the key to the construction of the reverse method lies in the underground excavation and excavation technology. At present, the underground excavation mostly uses crawler grabs to excavate the soil, and the excavation equipment is used to excavate the soil or use the original driveway to the soil extraction surface. These excavation methods mainly have disadvantages. Structural construction has a great impact, and there are problems such as unstable unearthed, low work efficiency and high cost
Therefore, the excavation method of deep foundation pits under the existing reverse operation conditions is still not ideal.

Method used

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  • Relay unearthing method and structure for deep foundation pit platform under reverse construction condition

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Embodiment Construction

[0012] Hereinafter, the present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0013] Embodiment of the present invention: carry out construction first according to the deep foundation pit platform relay excavation structure under a kind of reverse working condition of the present invention, this structure comprises the deep foundation pit made by reverse working method, when implementing, different height positions in the deep foundation pit There are 2 to 8 soil transfer platforms 1 on it, and the number of soil transfer platforms 1 can be set according to the actual needs of use. The soil transfer platform 1 can be made into a reinforced concrete slab structure or a platform with a steel plate structure; then a stop platform 3 is arranged between every two soil transfer platforms 1, and the stop platform 3 can be made into a mound type according to the site conditions If the strength of the mound-type platform st...

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Abstract

The invention discloses a relay unearthing method and structure for a deep foundation pit platform under a reverse construction condition. The relay unearthing method comprises the following steps of: beginning with an unearthing surface of a deep foundation pit, transferring earth-stone work of the unearthing surface to a first previous earth transferring platform through an excavator on the unearthing surface, then transferring the earth-stone work on the first previous earth transferring platform to a second previous earth transferring platform previous to the first previous earth transferring platform through the excavator on a shutdown platform above the first previous earth transferring platform; afterwards, transferring the earth-stone work on the second previous earth transferring platform to a third earth transferring platform previous to the second previous earth transferring platform through the excavator on the second previous earth transferring platform, and so on till the excavator arranged on the top surface of the deep foundation pit transfers the earth-stone work on the uppermost earth transferring platform to an earth-stone work transfer vehicle on the top surface of the deep foundation pit; and finally transporting the earth-stone work to an appointed soil dumping place through the earth-stone work transfer vehicle. The relay unearthing method and structure have the advantages of construction simplicity, low earthing cost, safety in use, high efficiency, rapidness and the like.

Description

technical field [0001] The invention relates to a relay excavation method and structure of a deep foundation pit platform under reverse working conditions, and belongs to the technical field of building foundation construction. Background technique [0002] Nowadays, the construction speed of urban construction and old city renovation projects is getting faster and faster, but the construction site is getting smaller and smaller, and the reverse method construction technology has gradually become an option for the construction of ultra-deep foundation pits. However, the key to the reverse method construction is the earthwork excavation and excavation technology. At this stage, the crawler grab bucket is mostly used for excavation, and the excavation equipment is used for excavation or the use of the original driveway to the excavation surface. These excavation methods mainly exist. Structural construction has a large impact, and there are problems such as unstable excavation...

Claims

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Application Information

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IPC IPC(8): E02D17/02
Inventor 张明兰永基张家国
Owner CHINA CONSTR FOURTH ENG DIV
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