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A combined structure with hollow piles on the periphery of existing piles and its construction method

A combined structure and hollow pile technology, applied in the direction of foundation structure engineering, foundation structure repair, building construction, etc., can solve the problems that are difficult to apply to the urban center with dense buildings, and achieve the effect of consolidating stability and improving bearing capacity

Active Publication Date: 2020-09-08
HEBEI UNIV OF TECH
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Problems solved by technology

[0006] The patent "A Method and Building Applicable to Underground Addition of Frame Structure Buildings" (CN201610629939.3) introduces the process of using underpinning piles to increase underground floors. Because the newly added pile foundation is outside the original independent foundation, it needs It is difficult to apply to the urban center with dense buildings due to the additional expansion of the basic site

Method used

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  • A combined structure with hollow piles on the periphery of existing piles and its construction method
  • A combined structure with hollow piles on the periphery of existing piles and its construction method
  • A combined structure with hollow piles on the periphery of existing piles and its construction method

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Embodiment Construction

[0042] Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the present invention is further described in detail, it should be noted that the present invention is not limited to the following specific embodiment, and all equivalent transformations done on the basis of the technical scheme of the present application all fall into into the protection scope of the present invention.

[0043] Such as figure 1As shown, the invention discloses an inventive design of a composite structure and a construction method of a hollow pile on the periphery of an existing pile. The combined structure of the hollow piles on the periphery of the existing piles is divided into upper and lower parts, the lower part is the prefabricated hollow pile 2 coaxially arranged on the periphery of the existing pile body 1 of the building, and the upper part is poured outside the existing pile foundation. A solid reinforced concrete pile body 4 with the same diameter as ...

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Abstract

The invention relates to a combined structure of aperipheral sleeve hollow pile of an existing pile and a construction method of the combined structure, and relates to the technical field of reinforcing a pile foundation under an existing building. Thecombined structure is designed for underground space development andexistingpilefoundationreinforcementunder the existing pile foundation building in the soft soil area. The combined structure of theperipheral sleeve hollow pile ofthe existing pile includes anexisting pile bodyand the hollow pile forperipheral sleeving, wherein the hollow pile comprises a plurality of pile sections, each pile section isformed by assembling prefabricated arc-shaped pile pieces with one-third circumference, andthe annular pile sections are spliced into a fabricated combined hollow pile in the central axis direction and are gradually pressed into a soil body by static pressure. After pressing-in process is all completed, grouting is carried out to strengthen the inner part of the hollow pile and the soil body between the hollow pile and the existing pile. The combined structure enablesthe existing pile body, the peripheral hollow pile and an upper bearing platform to form an integral structure, the joint bearing capacity isgood, the bearing capacity of an existing pile foundation isimproved, and technical support isprovided for the space development of the existing building.

Description

technical field [0001] The invention relates to the relevant technical field of pile foundation structure and construction technology, in particular to a combined structure and construction method of hollow piles on the periphery of existing piles. Background technique [0002] Improving the utilization rate of urban land, solving urban traffic congestion and improving the underground activity space of urban people (such as underground shopping malls), orderly, safe, reasonable and efficient development of potential underground space resources in modern cities has always been an urgent need for the development of modern cities where. [0003] Nowadays, there are still a large number of unused underground spaces under existing buildings in Chinese cities, especially some relatively old buildings, and many of these old buildings are located in the city center or are historical and cultural relics, resulting in the existence of central business circles in many cities. Problems...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04G23/02E02D37/00
CPCE02D37/00E04G23/0266
Inventor 黄达柯晨阳宋宜祥岑夺丰
Owner HEBEI UNIV OF TECH
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