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Bridge well digging foundation capable of enlarging soil participation degree

A foundation and soil technology, applied in the direction of basic structure engineering, construction, etc., can solve problems such as damage, achieve the effects of expanding the application range, improving seismic performance, and reducing strength

Inactive Publication Date: 2021-11-02
LANZHOU JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the well-dug foundation has won the favor of bridge designers for its good static performance, however, the foundation will still be damaged under the action of earthquakes

Method used

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  • Bridge well digging foundation capable of enlarging soil participation degree
  • Bridge well digging foundation capable of enlarging soil participation degree
  • Bridge well digging foundation capable of enlarging soil participation degree

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings. Such as figure 1 As shown, a bridge well-digging foundation that can expand soil participation is composed of a foundation body (1), a prefabricated reinforced concrete root key (2) and a bridge pier (3). The excavation process of bridge well foundation that can expand the participation of soil is as follows: figure 2 shown. Firstly, excavate the foundation pit (5) in the soil (4) manually or mechanically, and pour the retaining wall concrete (6) while excavating in the process of excavating the foundation pit (5), and pour the retaining wall concrete (6) at the same time When the foundation pit (5) is excavated to the bottom of the foundation pit (8), the bottom of the foundation pit (8) is leveled; after the excavation of the foundation pit (5) is completed, the Place the precast concrete block (9) at the bottom of the foundation pit (8) and set up the scaffolding ...

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Abstract

The invention relates to a bridge well digging foundation capable of enlarging the soil participation degree, in particular to a root key type well digging foundation. According to the novel foundation, root keys (a prefabricated reinforced concrete rod piece) are jacked into soil bodies around the foundation to drive more soil bodies around the foundation to participate in stress, then the mechanical property and anti-seismic safety of the well digging foundation under the action of an earthquake are improved, and the novel foundation has the advantages of being low in economic cost, convenient to construct and high in adaptability. The novel foundation can effectively improve the bearing capacity and the energy dissipation capacity of piers, relieve rigidity degradation of the piers, remarkably improve the anti-seismic property of the well digging foundation and expand the application range of the well digging foundation on the premise of not increasing the foundation digging work amount, and has important significance on further popularization and application of the well digging foundation.

Description

technical field [0001] The invention relates to a bridge well-digging foundation capable of enlarging soil participation, in particular to a root-key type well-digging foundation. The foundation can significantly improve the seismic performance of ordinary dug well foundations, expand the application range of dug well foundations, and has the characteristics of low economic cost, convenient construction, and strong adaptability. Basic seismic performance. Background technique [0002] As an important part of the road, bridges play an irreplaceable role. Once a bridge is damaged, it often causes huge economic losses and casualties. Therefore, how to ensure the safety of bridges in earthquakes has become a widely concerned issue in engineering circles. As an important part of the bridge structure, the bridge foundation bears all the loads of the bridge, which is very important to the use and safety of the entire structure. A large number of earthquake damage data show that t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/42E02D27/34
CPCE02D27/42E02D27/34E02D2250/0023
Inventor 王义陈兴冲张熙胤鲁锦华刘正楠
Owner LANZHOU JIAOTONG UNIV
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