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Underground reverse storey-adding construction method for overpass column pier foundation

A construction method and technology for viaducts, which are applied in infrastructure engineering, erection/assembly of bridges, bridges, etc., can solve the problems of viaducts affecting the safe operation of viaducts, reduce pile foundations and caps, eliminate deformation and settlement, and save underpinnings. The effect of the pile foundation

Active Publication Date: 2018-07-10
SHANGHAI NO 4 CONSTR
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Problems solved by technology

[0005] The purpose of the present invention is to provide a construction method for underground reverse layer-addition of viaduct pier foundations, which solves the problem that the settlement deformation of viaducts affects the safe operation of viaducts during the process of underground reverse-layer addition of viaduct pier foundations, and solves the problem of viaducts in newly developed Settlement and Deformation of Reconstructed Permanent Viaduct Columns on Basement Roof

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  • Underground reverse storey-adding construction method for overpass column pier foundation
  • Underground reverse storey-adding construction method for overpass column pier foundation
  • Underground reverse storey-adding construction method for overpass column pier foundation

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[0061] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. The technical content and features of the present invention will be described in detail below by referring to the illustrated embodiments in conjunction with the accompanying drawings. It should be further noted that all the drawings are in very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention. For the convenience of description, the "up" and "down" described below are consistent with the directions of up and down in the drawings, but this should not be a limitation of the technical solution of the present invention.

[0062] see Figure 1 to Figure 23 , the present embodiment discloses an underground reverse layer-a...

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Abstract

The invention provides an underground reverse storey-adding construction method for an overpass column pier foundation. Active underpinning is carried out on an overpass twice; settlement deformationof the overpass caused by underpinning load on the overpass is continuously compensated in the construction process; during the first active underpinning, the deformed settlement of the overpass generated in the underground space development construction is eliminated by using a temporary underpinning structure and a hydraulic jack; and during the second active underpinning, the deformed settlement of a reconstructed overpass column in permanent use is eliminated by using a hydraulic steel pipe support; therefore, the safety and stability of the overpass in the normal operation are guaranteed;and by using a newly-developed underground space structure as the foundation of a temporary underpinning system, a lot of underpinning pile foundations are saved. In addition, by using a newly-developed basement top slab as the permanent foundation of the overpass column, the underground reverse storey-adding construction method for the overpass column pier foundation has the advantages that thepile foundations and bearing platforms of the overpass column are reduced, the column distance in the axis net of the underground space can be made larger and the use space is made wider.

Description

technical field [0001] The invention relates to an underground layer-increasing method for elevated column pier foundations, and is especially suitable for the underground layer-increasing method for elevated column pier foundations in an operating state. Background technique [0002] At present, the development and utilization of urban underground space has become a new direction for urban renewal and development. While the underground space of new construction projects is facing large-scale, deep-level, and comprehensive development, the absence of underground space in existing buildings has gradually become a problem that affects urban development. short board. [0003] For example, many important transportation hubs, large venues and residential areas have problems such as parking difficulties. These problems have become increasingly prominent and have seriously affected the sustainable development of cities. [0004] In the process of underground space development and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/02E01D21/00E02D29/045
CPCE01D19/02E01D21/00E02D29/045
Inventor 孙沈鹏谷志旺龙毅华戴森陶海灵张波贾非
Owner SHANGHAI NO 4 CONSTR
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