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A new type of seismic isolation composite foundation and its construction method

A composite foundation and seismic isolation technology, applied in the field of foundation engineering

Active Publication Date: 2021-08-06
SOUTHEAST UNIV
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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 of bearing capacity, settlement and earthquake resistance, and the entire system will not experience horizontal displacement and cushion material displacement and detachment under strong earthquakes And other issues

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  • A new type of seismic isolation composite foundation and its construction method
  • A new type of seismic isolation composite foundation and its construction method
  • A new type of seismic isolation composite foundation and its construction method

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Embodiment Construction

[0027] Specific embodiments of the present invention are described in detail below to facilitate a further understanding of the present invention.

[0028] The new seismic isolation composite foundation of this embodiment, from top to bottom, is: superstructure 8, raft 7, multi-layer seismic isolation strengthening cushion, pile 1; the multi-layer seismic isolation strengthening cushion is sequential from top to bottom It is composed of: fiber-solidified soil layer 6, double-layer wrapped geotechnical composite crushed stone layer 3-5, and solidified soil layer 2.

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

[0030] Then the prefabricated piles are driven in. The piles are made of steel pipe piles. The piles are arranged in a square shape. The pile length is determined according to the specific soil conditions. A certain height is reserved for the top surface of the foundation and buried in the solidified soil layer. The reserved height of the pile top accounts ...

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Abstract

The present invention provides a novel seismic-isolation composite foundation and its construction method. The novel seismic-isolation composite foundation of the present invention comprises, from top to bottom: an upper structure, a raft, a fiber-solidified soil layer, a double-layer wrapped geotechnical composite crushed stone layer, solidified soil layer, and piles, a section of the top is reserved for embedding in the solidified soil layer, and the reserved height accounts for 30% to 60% of the height of the solidified soil layer. The raft is placed in the center of the pile group and It is buried in the fiber-solidified soil layer, and the fiber-solidified soil is spread on the top of the raft. The seismic-isolation composite foundation of the present invention can increase the bearing capacity of the foundation, improve the uneven settlement of the entire system, effectively prevent and control horizontal displacement, prevent pile top penetration damage, absorb and dissipate seismic energy, and constitute a new type of high-efficiency seismic-proof high-strength seismic-isolation composite foundation. basic system.

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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Patent Type & Authority Patents(China)
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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