Anchoring construction method for fastener steel tube pile cofferdam

Abstract

The invention discloses an anchoring construction method for a fastener steel tube pile cofferdam. The anchoring construction method comprises the steps as follows: positioning fastener steel tube piles; inserting the fastener steel tube piles to a riverbed; drilling anchor bolt holes by utilizing a movable platform; placing anchor rods; performing underwater concrete pouring to the fastener steel tube piles, and completing the anchoring of the fastener steel tube piles and a rock layer. The anchoring construction method not only realizes the advantages of the fastener steel tube pile cofferdam construction, but also effectively solidifies a base rock and the fastener steel tube piles via arranging the anchor rods; since the fastener steel tube piles and the anchor rods can be synchronously anchored, the stability and safety of the cofferdam construction are improved, cofferdam construction period is shortened, the working efficiency is improved, and cost of manpower and material resources is reduced; the anchoring construction method of the fastener steel tube pile cofferdam can be applicable to different landforms and construction environments, so that the adaptability is strong. Compared with the prior art, the anchoring construction method for the fastener steel tube pile cofferdam is more scientific in work efficiency, economy and the like.

Description

technical field [0001] The invention relates to a building construction method, in particular to an anchoring method for locking steel pipe pile cofferdams and bedrock. Background technique [0002] With the rapid development of China's infrastructure construction, a large number of cross-river road bridges, railway bridges and wharfs are in urgent need of construction. In order to speed up the construction progress, ensure the quality of the project and construction safety, the construction unit usually uses earth-rock cofferdams and steel sheet piles when building bridge piers in water Construction methods such as cofferdam, locking steel pipe pile cofferdam, steel casing cofferdam and concrete cofferdam, etc., traditional cofferdam construction methods require a lot of manpower and material resources for cofferdam processing, plugging or slotting and anchoring, etc. , and the traditional cofferdam construction also has the following defects: (1) The earth-rock cofferdam h...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of China's infrastructure construction, a large number of cross-river road bridges, railway bridges and wharfs are in urgent need of construction. In order to speed up the construction progress, ensure the quality of the project and construction safety, the construction unit usually uses earth-rock cofferdams and steel sheet piles when building bridge piers in water Construction methods such as cofferdam, locking steel pipe pile cofferdam, steel casing cofferdam and concrete cofferdam, etc., traditional cofferdam construction methods require a lot of manpower and material resources for cofferdam processing, plugging or slotting and anchoring, etc. , and the traditional cofferdam construction also has the following defects: (1) The earth-rock cofferdam has a simple structure and is convenient for construction, but its engineering volume is large, and the subsidence deformation of the weir body is also large; (2) Steel sheet piles and locking steel pipe piles The demolition and construction of the cofferdam is highly mechanized, safe and reliable, but it is greatly affected by the fluctuation of the water surface, and the anchorage is poor in waters with less covering layer; (3) The concrete cofferdam has strong anti-scourability and anti-seepage ability, but the underwater construction of the weir body is difficult , high cost; (4) The integrity and stability of the steel casing cofferdam is better, but sometimes it needs to be grooved underwater or inserted large steel pipe piles around the cofferdam for reinforcement, which increases the construction cost

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