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Construction method of underwater concrete water partition wall

A technology of underwater concrete and construction methods, which is applied in excavation, foundation structure engineering, construction, etc., can solve problems such as lack of economy and practicality, and heavy construction workload, and achieve good practicality and economy, labor reduction, and The effect of strong applicability

Active Publication Date: 2021-11-05
重庆建工第一市政工程有限责任公司
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  • Abstract
  • Description
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Problems solved by technology

[0004] Aiming at the technical problems existing at present, the present invention provides a construction method of underwater concrete water-retaining wall, so as to solve the problems of large construction workload, low economy and insufficient practicability in the prior art

Method used

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Embodiment Construction

[0030] The present invention will be further described in detail below in conjunction with test examples and specific embodiments. However, it should not be understood that the scope of the above subject matter of the present invention is limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0031] Construction method of underwater concrete water-retaining wall of the present invention, comprises the following steps:

[0032] (1) Construction preparation

[0033] According to the design and construction drawings and the actual situation of the site terrain, lay out the construction control points. The control points in the construction preparation stage are mainly used to control the excavation range. When the composite formwork is installed, it should be re-measured and placed, and the method of checking while positioning is adopted.

[0034] (2) Foundation pit excava...

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Abstract

The invention discloses a construction method for an underwater concrete water-retaining wall, which comprises the following steps: (1) construction preparation; (2) foundation pit excavation and dewatering treatment; (3) erection of an above-water operation platform; (4) hoisting of a combined formwork (5) bedrock surface cleaning; (6) foundation pit water injection; (7) conduit configuration; (8) underwater concrete pouring; (9) underwater maintenance; (10) foundation pit drainage; (11) formwork removal . This construction method changes the construction of the water barrier wall of the cofferdam foundation pit from the dewatering operation to the underwater operation, which avoids the excessive exposure time of the foundation pit slope, reduces the risk of slope overturning under unbalanced water pressure, and at the same time reduces the risk of foundation pit slope overturning. During the excavation of the pit, the input of resources for dewatering and maintaining the stability of the slope has achieved good results through the promotion and application of the construction technology.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to an underwater concrete water-retaining wall construction method. Background technique [0002] The new construction project of Zhengwharf Ferry Bridge in Jiangling Town, Tongchuan District, Dazhou City starts at the intersection of the Jiangling Town Connection Road of Bada Expressway and Jiangling Town to Baozi Road. The new bridge crosses the Ba River and ends at Yanhe Village, Jiangling Town. There are village roads with a total length of 1167.5 meters, of which the bridge is 406.8 meters long and the approach road is 798.5 meters long. The bridge project is the control project of this project, and the bridge design is 82+140+82 continuous rigid frame bridge + approach bridge 3×30m simply supported T-beam, the foundation is in the form of group piles. The water level of the Bahe River is relatively high during the flood season, and the normal water level is relati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D19/04E02D17/04E02D19/20E02D17/20
CPCE02D17/04E02D17/20E02D19/04E02D19/20E02D2600/30
Inventor 韩祯张新雨李治兵周小烨游建彬张泽友
Owner 重庆建工第一市政工程有限责任公司
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