Construction method of steel pipe pile steel trestle bridge

Abstract

The invention discloses a construction method of a steel pipe pile steel trestle bridge and relates to the technical field of trestle bridge construction. The present invention comprises the following steps: Step 1, making steel pipe piles; Step 2, installing an assembled cantilever guide frame positioning device; Step 3, placing steel pipe piles in place; Step 4, sinking piles by vibration; Step 5, installing parallel connections between piles Step 6, pillow beam construction; Step 7, ring lug construction; Step 8, Bailey main girder construction; Step 9, I-beam distribution beam and bridge deck construction; Step 10, upper system preloading construction. The steel pipe pile of the present invention has high insertion precision, no temporary fixing measures are needed, the pillow beam is firmly connected with the steel pipe pile, has strong resistance to the lateral impact force of the vehicle, is less affected by water flow, has a large bearing capacity, and improves the construction quality. It has good economic and technical benefits; the design of the assembled cantilever guide frame is processed by section steel, and is suspended on a single group of Bailey, which is convenient, flexible and fast in operation.

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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