High-pier cast-in-place beam support and construction method thereof

Abstract

The invention discloses a high-pier cast-in-place beam support and a construction method thereof. The construction method comprises the following steps that first shear keys used for supporting a lower tie beam are pre-buried at the lower ends of the opposite sides of adjacent pier bodies, and second shear keys used for supporting an upper cross beam are pre-buried at the upper ends of the opposite sides of the adjacent pier bodies; the lower tie beam is erected on the first shear keys; the upper cross beam is erected on the second shear keys; a supporting rod system used for connecting the upper cross beam and the lower tie beam is hoisted; a plurality of sand boxes are mounted on the top surface of the upper cross beam; a distribution main cross beam is installed on the top faces of the sand boxes, and a pre-assembled bailey beam is hoisted and erected on the distribution main cross beam; and a transverse distribution beam is installed on the top face of the bailey beam, and then support erecting is completed. According to the method, under different pier height conditions, the shear keys are pre-buried in the pier bodies, the shear keys serve as stress points to conduct support erecting, the method is mainly suitable for the wading working condition, the first shear keys are pre-buried at the lower ends of the pier bodies, the lower tie beam is erected on the first shear keys, and the height of the lower tie beam can be determined during design according to topographic conditions.

Description

technical field [0001] The invention relates to a bridge support construction method, in particular to a high pier cast-in-place beam support and a construction method thereof. Background technique [0002] With the continuous deepening and improvement of the high-speed railway construction network, a large number of new lines pass through bridges and mountains. Through the design of cast-in-place beam support types, the demand for high safety, good efficiency and short construction period for support cast-in-place beam construction is becoming more and more urgent. . The cast-in-place beam support is usually cast-in-situ with the buckle-type steel pipe support or the steel pipe column frame method. For cast-in-place beams with high pier heights and limited terrain conditions, if the common steel pipe The buckle-type steel pipe support method construction not only has a huge workload and a long construction period, but also has poor economic and social benefits. Contents ...

AI Technical Summary

Problems solved by technology

The cast-in-place beam support is usually cast-in-situ with the buckle-type steel pipe support or the steel pipe column frame method. For cast-in-place beams with high pier heights and limited terrain conditions, if the common steel pipe Buckle-type steel pipe support method construction not only has a huge workload and a long construction period, but also has poor economic and social benefits

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