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Underground engineering one-pile multi-use semi reverse construction method

A technology of underground engineering and inverse method, applied in water conservancy engineering, infrastructure engineering, artificial island and other directions, can solve the problems of high cost and complicated construction, and achieve the effect of convenient construction, simple construction equipment and saving project cost.

Inactive Publication Date: 2008-02-06
ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At home and abroad, there is also a full-reverse method of construction technology using underground diaphragm walls, that is, after the surrounding enclosure diaphragm walls, middle engineering piles and support piles are installed, the underground engineering is excavated downwards, and the simultaneous ground engineering is also constructed upwards. Construction progress, but the construction is complicated, special machinery is required, and the cost is high

Method used

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  • Underground engineering one-pile multi-use semi reverse construction method
  • Underground engineering one-pile multi-use semi reverse construction method
  • Underground engineering one-pile multi-use semi reverse construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: This method first builds surrounding protective piles and the water-stop soil retaining cement pile curtain along the periphery of the underground project. These surrounding protective piles can be constructed by "one pile with three uses" or by conventional temporary surrounding protective piles; Middle construction piles, some or all of these piles can be selected according to the structural design and constructed according to the requirements of one pile for four purposes. Then, according to the elevation of the floor beams of each floor of the underground project, the vertical and horizontal main beams of each floor are constructed layer by layer from top to bottom, and these beams should meet the requirements of supporting force. After excavating to the bottom, construct the foundation floor from bottom to top, and construct the underground engineering columns, walls and floors to the ground layer by layer.

[0029] In this kind of underground enginee...

Embodiment 2

[0036] Embodiment 2: As shown in Figures 7 to 12, the feature is that the top beam of the retaining pile is moved down, so that one support can be reduced, which saves the cost and facilitates the construction. The specific implementation depends on the upper soil quality and the surrounding environment: if the soil quality is good and the surrounding environment permits, the upper part shall be excavated directly by sloping (if the soil quality or the surrounding environment does not allow direct sloping, the soil nail wall enclosure method can be used for excavation) until the top is pressed At the bottom of the beam 5, construct the top beam 5 of the enclosure pile 2; excavate to the bottom of the support 4, and pour the entire construction enclosure beam 12 and support 4; the same as 1.4, 1.5 and 1.6. If it is necessary to use the retaining pile as an engineering pile, construct the force transmission pad beam 13 and the force transmission corbel 14 at the same time in 1.6,...

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Abstract

The present invention relates to a method for one pile for a plurality of applications for semi-reversal construction for the underground engineering. A traditional temporary enclosure support system of the underground engineering can be taken as a main beam system of floors; in addition to traditional load bearing and floating resistance function, an internal engineering pile can be taken as an enclosure support pile and a reinforcement structure of columns for the future underground engineering; the surrounding enclosure employs tradition methods, in addition to the enclosure, the surrounding enclosure protection pile is taken as a surrounding engineering pile and the external wall of the future underground engineering; the support system concurrently the floor beam system are excavated from top to bottom, and an underground engineering bottom plate and floors is worked and bearing column and a wall body is loaded to the ground from bottom to top. The present invention has the beneficial effects that the present invention combines the support system and the basement main beam system: the middle engineering pile is taken as pressure bearing, floating resistance and supporting pile and bearing load column for the future basement. Compared with the full-reversal method for the underground continuous wall, the present invention has the advantages of saving project cost, convenient construction, simple construction equipment, etc.

Description

technical field [0001] The invention relates to a method and a construction method for a complete set of structural systems used in underground engineering construction, and is a multi-purpose half-upside down method for one pile in underground engineering. Background technique [0002] Underground engineering construction is generally to excavate downwards and construct the support system of each layer after setting the surrounding retaining piles and central support piles. After the foundation floor is excavated to the bottom, the support is removed layer by layer from the bottom to the top. Slow, high cost, difficult to control peripheral displacement, and high risk. At home and abroad, there is also a full-reverse method of construction technology using underground diaphragm walls, that is, after the surrounding enclosure diaphragm walls, middle engineering piles and support piles are installed, the underground engineering is excavated downwards, and the simultaneous gro...

Claims

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Application Information

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IPC IPC(8): E02D29/045E02D5/22E02D5/00
Inventor 严平
Owner ZHEJIANG UNIV
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