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Bridge pier flow goaf reinforcing method

A technology of flow void area and bridge pier, which is applied in the field of bridge pier void area reinforcement, can solve the problems of improving the bearing capacity of bridge piers, areas with aesthetic requirements, which are not suitable for use, local erosion cannot be cured, etc., so as to improve the overall strength, reduce soil loss, The effect of improving bearing capacity and anti-flood scour capacity

Inactive Publication Date: 2019-11-22
OCEAN UNIV OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Nowadays, the traditional riprap method is generally used to protect the void area of ​​bridge piers. It is characterized by convenient material acquisition, simple process, and high flexibility in operation and implementation. It should not be used when the material or stone particle size cannot meet the requirements and in areas with aesthetic requirements

Method used

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  • Bridge pier flow goaf reinforcing method
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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] The structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification for the understanding and reading of those who are familiar with this technology, and are not used to limit the conditions for the implementation of the present invention , so it has no technical substantive meaning, and any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope of the disclosure of the present invention without affecting the functions and objectives of the present invention. The technical content must be within the scope covered. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to lim...

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Abstract

The invention discloses a bridge pier flow goaf reinforcing method which comprises the following steps of 1), determining the range of a pier flow goaf, and driving the continuous steel sheet piles toenclose the flow goaf; 2) determining the scouring depth, and backfilling the sandy soil in the flow goaf to restore the flow goaf to be slightly higher than an original riverbed; 3) driving a vibroflotation high-pressure grouting pile group in the flow gob area; and 4) pulling out the steel sheet piles. According to the method, the reinforcing range of the pier to be reinforced is determined, the steel sheet piles are driven in the to-be-reinforced area to block the water flow, and then the sandy soil is backfilled, then the vibroflotation high-pressure grouting piles are driven into the reinforcing area for solidifying the soil body in the flow goaf. The pile body of the pile can form a composite foundation with a soil body, so that the backfill soil has the higher flow scouring resistance, the regeneration of the flow goaf is effectively avoided, the overall strength of the soil foundation of the the flow goaf is greatly improved, the water flow characteristic can be affected afterthe grouting piles are solidified, the scouring effect of the water flow on the pier can be reduced, and the bearing capacity and the flood-resisting scouring resistance of the pier are greatly improved.

Description

technical field [0001] The invention relates to a bridge reinforcement technology, in particular to a reinforcement method for a pier blank area. Background technique [0002] The pier void area also refers to the pier scouring area, which is the erosion caused by the strong eddy current generated around the pier due to the obstruction of the pier. Scouring is the process by which water excavates and carries away sediment and other substances from around structures such as river beds, embankments, bridge piers and foundations. Under the action of water currents, voids are formed around the foundation, especially in the event of flooding or sluice release, which intensifies this process. If things go on like this, the foundation bearing capacity will be greatly weakened. The experience of bridge construction in various countries in the world shows that local erosion of piers by water flow is an important cause of bridge damage. [0003] At present, the protection measures ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D22/00
CPCE01D22/00
Inventor 陈旭光万勇徐齐宇张弦李克虎
Owner OCEAN UNIV OF CHINA
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