Bottom form support system and construction method for cast-in-place beams of high-pile wharf

Abstract

The invention discloses a bottom die supporting system of a long-piled wharf cast-in-place beam and a construction method of the bottom die supporting system. The bottom die supporting system comprises a plurality of steel protection cylinders arranged on the surface of a pouring pile in the axis direction of a single-row pile foundation. A plurality of supporting brackets parallel to the axis direction of the single-row pile foundation are fixed to the surfaces of the steel protection cylinders in the circumferential direction. Shelving beams perpendicular to the axis direction of the single-row pile foundation are shelved on the supporting brackets located on the front sides and the rear sides of the steel protection cylinders. Side longitudinal beams which are shelved on the shelving beams and are parallel to the axis direction of the single-row pile foundation are arranged on the left sides and the right sides of the steel protection cylinders. The span length of the longitudinal beams is reduced by the diameter of one steel protection cylinder through the longitudinally-arranged brackets, and the mid-span moment, borne by the longitudinal beams, transmitted by the cast-in-place beam is greatly reduced; and the number of the side longitudinal beams and the number of middle longitudinal beams are each three. Compared with a traditional method, one longitudinal beam is additionally arranged to participate in stress; inclined struts are arranged at the two ends of each middle longitudinal beam and can effectively bear the construction load of a cantilever section of the long-piled wharf cast-in-place beam; and thus, the safety of the bottom die supporting system is more easily guaranteed.

Description

technical field [0001] The invention relates to the technical field of high-pile wharf beam construction, in particular to a bottom form support system for a high-pile wharf cast-in-place beam and a construction method thereof. Background technique [0002] The beam of the high-piled wharf is located on the top of the pile foundation, connects the pile foundations of a single bent frame into a whole, and transmits the upper load of the high-piled wharf to the pile foundation. At present, cast-in-situ piles with steel casings are often used for the pile foundation of high-piled wharves. After the construction of cast-in-place piles is completed, it is necessary to rely on the cast-in-place piles to erect a bottom formwork support system for cast-in-place construction of beams. The traditional method of setting up the bottom form support system is: install steel hoops on the cast-in-situ piles, and the direction of the corbels of the steel hoops is perpendicular to the axial d...

AI Technical Summary

Problems solved by technology

When the distance between adjacent pile foundations of a single bent frame is large, the mid-span bending moment of the longitudinal beam will be very large, so that there is a risk of collapse of the bottom form support system

Images