Construction method of steel trestle with steel pipe piles

Abstract

The invention discloses a construction method of a steel trestle with steel pipe piles, and relates to the technical field of trestle construction. The construction method comprises the following steps of 1, manufacturing the steel pipe piles; 2, installing an assembled cantilever guide frame positioning device; 3, installing the steel pipe piles in place; 4, performing pile vibrosinking; 5, performing flat connector installation between the piles; 6, constructing sleeper beams; 7, constructing annular lug plates; 8, constructing Bailey main beams; 9, constructing I-shaped steel load distribution beams and a deck; and 10, performing prepressing construction on an upper part system. The construction method has the advantages that the insertion and driving precision of the steel pipe piles is high; temporary fixing measures are not needed; the connection between the sleeper beams and the steel pipe piles is firm; the performance for resisting transverse impact force of vehicles is high;the influence caused by water flow is small; the bearing capacity is great; the construction quality is improved; and good economical and technical benefits are realized. The assembled cantilever guide frame using the design is formed by processing section steel and is hung on the single group of Bailey main beams, so that the operation is convenient and flexible, and the speed is high.

Description

technical field [0001] The invention belongs to the technical field of trestle construction, in particular to a construction method of a steel pipe pile steel trestle. Background technique [0002] In recent years, more and more deep-water piers, construction trestles and offshore platform foundations use steel pipe piles. Steel pipe piles have strong penetrating ability, good driving resistance, large horizontal and vertical bearing capacity, and can be used as high, large and heavy structures. The foundation piles can withstand wave force, earth pressure and earthquake force. [0003] When steel pipe piles are in rivers with high flow rates, many loads are considered in the design of steel pipe pile construction platforms, such as: water flow force, wave force, drilling rig load, transportation machinery, overweight machinery, cargo stacking, etc., in irregular Under the action of other factors such as waves and water flow, relatively large displacements are likely to occ...

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Problems solved by technology

[0003] When steel pipe piles are in rivers with high flow rates, many loads are considered in the design of steel pipe pile construction platforms, such as: water flow force, wave force, drilling rig load, transportation machinery, overweight machinery, cargo stacking, etc., in irregular Under the action of other factors such as waves and water flow, relatively large displacements are likely to occur at the top of the pile, especially under the long-term action of wave and current loads, due to the repeated accumulation of vibration response effects, steel pipe piles are prone to fatigue damage, so the engineering uses The oblique steel pipe piles are used to cope with irregular waves and water flow forces, but the positioning and sinking process of the oblique steel pipe piles often has large errors, low installation accuracy, poor balance of the pillow beam, and small upper platform bearing capacity, which is prone to steel trestle bridges Instability and collapse will bring irreparable losses to the construction safety of the project and the personal safety of construction personnel

[0004] In view of this, in order to solve the problems that the oblique steel pipe piles are greatly affected by the flow force when sinking, the installation accuracy of the oblique steel pipe piles is low, the stability of the steel trestle construction platform is poor, and the bearing capacity is small, it is urgent to invent a simple and effective steel pipe pile. Pile-steel trestle and its construction method to improve the construction quality and efficiency of steel trestle

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