Novel seismic-isolation composite foundation and construction method thereof

A composite foundation, a new type of technology, applied in the field of basic engineering

Active Publication Date: 2019-11-29
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Purpose of the invention: In view of the defects of the basic form of the existing research results and the needs of large-scale construction projects, taking into account the common functional requirements o

Method used

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  • Novel seismic-isolation composite foundation and construction method thereof
  • Novel seismic-isolation composite foundation and construction method thereof
  • Novel seismic-isolation composite foundation and construction method thereof

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Example Embodiment

[0027] The specific embodiments of the present invention will be described in detail below to facilitate further understanding of the present invention.

[0028] The new type of seismic isolation composite foundation of this embodiment is as follows from top to bottom: upper structure 8, raft 7, multi-layer seismic isolation reinforced cushion, and pile 1. The multilayer seismic isolation reinforced cushion is sequentially from top to bottom It is composed of fiber-solidified soil layer 6, double-layer wrapped geocomposite gravel layer 3-5, and solidified soil layer 2.

[0029] First, prefabricated steel pipe piles and rafts;

[0030] The prefabricated piles are subsequently driven. The piles are steel pipe piles and the piles are arranged in a square shape. The pile length is determined according to the specific soil conditions. The pile diameter is 1.5~2.5m, and the pile spacing is 2.5~5 times the pile diameter. A certain height is reserved for the top surface of the foundation an...

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Abstract

The invention provides a novel seismic-isolation composite foundation and a construction method thereof. The novel seismic-isolation composite foundation comprises an upper structure, a raft board, afiber solidified soil layer, a double-layer wrapping type geotechnical composite broken stone layer, a solidified soil layer and piles sequentially from top to bottom, a segment is reserved at the topof each pile for being buried into the solidified soil layer, the reserving height accounts for 30-60% of the height of the solidified soil layer, the raft board is placed at the center of the grouped piles and buried into the fiber solidified soil layer, and fiber solidified soil is laid at the top of the raft board. The bearing capacity of the novel seismic-isolation composite foundation can beimproved, uneven settlement of a whole system is relieved, horizontal displacement is effectively prevented and controlled, piercing damage of the pile tops is prevented, seismic energy is absorbed and dissipated, and a novel and efficient anti-seismic and high-strength seismic-isolation composite foundation is constituted.

Description

technical field [0001] The invention relates to a novel seismic-isolation composite foundation and a construction method thereof, belonging to the field of foundation engineering. Background technique [0002] At this stage, pile composite foundations have been widely used in architectural design, and the problem of vertical load has been effectively solved, but the problem of horizontal load under earthquake has become a key technical problem that plagues the construction industry and needs to be solved urgently. The common seismic isolation technology in building foundation engineering is mostly superstructure seismic isolation, and lead core rubber bearings are often used in the seismic isolation device, but it can only meet the basic seismic isolation requirements of the superstructure. Damage may occur. With the continuous development of large-scale and high-demand construction projects, in order to ensure that the entire building system has the ability to resist stron...

Claims

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Application Information

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IPC IPC(8): E02D27/12E02D31/08C04B28/26C04B40/02
CPCC04B28/26C04B40/0277E02D27/12E02D31/08C04B22/00C04B18/08C04B18/141C04B24/2641C04B24/281C04B24/04C04B24/00C04B24/42C04B24/383C04B24/122C04B22/16C04B18/146C04B22/143
Inventor 赵莹莹龚维明苏雷凌贤长杨阳栾阳李鹏
Owner SOUTHEAST UNIV
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