Construction method of trestle steel pipe pile foundation

Abstract

The invention discloses a construction method of a trestle steel pipe pile foundation. The construction method is used for performing anchoring construction for the trestle steel pipe pile foundation on a slope bare rock surface and a shallow covered slope rock surface of the river, lake or ocean. The construction method comprises the following steps: A10) after utilizing an anchoring system to accurately position a floating pilot hole platform, respectively guiding each trestle steel pipe pile to fall onto a river bed rock surface but not perform a rock anchoring, through each reserved hole position on the floating pilot hole platform; A20) after impacting a hole to a designed depth on a foundational bed rock surface in the trestle steel pipe pile by using an impacting drill with the diameter less than the inner diameter of the trestle steel pipe pile, vibrating the trestle steel pipe pile so as to guide the trestle steel pipe pile to sink to the bottom of the hole, pouring reinforced concrete and firmly connecting the trestle steel pipe pile to the foundational rock; and A30) welding a trestle steel pipe pile connecting system, thereby finishing the construction for the trestle steel pipe pile foundation. According to the construction method, the operation of drilling the pile and steel pipe pile is adopted for construction, thereby efficiently resisting the influences of water flow, wind wave and air load and ensuring the stability and structural safety of the trestle.

Description

technical field [0001] The invention relates to a bridge construction method, in particular to a construction method for trestle steel pipe pile foundations, which is used for anchoring construction of trestle steel pipe pile foundations on inclined bare rock surfaces or shallow covering layer inclined rock surfaces on rivers, lakes or oceans. Background technique [0002] With the development of society, there are more and more bridge construction projects. In the past, trestle bridges were generally built on rivers and lakes with relatively thick covering layers. Under such geological conditions, the foundation construction of trestle bridges leading to the main project is generally carried out using the traditional "fishing method". However, there are many rivers, lakes and marine geological conditions that are inclined bare rock surfaces and shallow overburden layers. If the traditional method is used for construction, due to the action and influence of water flow, wind ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve the problem of how to carry out the anchoring construction of the trestle steel pipe pile foundation under the geological conditions of the inclined bare rock surface and the shallow overburden layer

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