Construction method for articulated gate shoe of pull rod of fan-shaped reinforcing steel bar penetrating arc door of gate pier

Abstract

The invention discloses a construction method for an articulated gate shoe of a pull rod of a fan-shaped reinforcing steel bar penetrating arc door of a gate pier. The construction method comprises the following steps that (1) when fan-shaped reinforcing steel bars are connected to one another, the fan-shaped reinforcing steel bars which penetrate in second-stage concrete grooves of the articulated gate shoe and are blocked by the articulated gate shoe extend out of first-stage concrete and extend to second-stage concrete grooves of the articulated gate shoe by a certain overlapping length, and the overlapping length is determined according to standard requirements and does not affect installation of the articulated gate shoe; and the rest fan-shaped reinforcing steel bars which penetrate in the second-stage concrete grooves of the articulated gate shoe and are not blocked by the articulated gate shoe are directly connected to one another, and then first-stage concrete of the gate pier is poured; (2) a plurality of circular steel plates are welded on the articulated gate shoe in a sleeving manner at intervals along the axial direction of the articulated gate shoe at first, and the number of the circular steel plates is determined according to the number of rows of the fan-shaped reinforcing steel bars which are blocked by the articulated gate shoe; and (3) the fan-shaped reinforcing steel bars which extend out of the first-stage concrete and extend to the second-stage concrete grooves of the articulated gate shoe by the certain overlapping length in the first step are welded with the corresponding circular steel plates, and then second-stage concrete of the articulated gate shoe is poured. The construction method for the articulated gate shoe of the pull rod of the fan-shaped reinforcing steel bar penetrating arc door of the gate pier has the advantages that the construction difficulty is reduced, and the engineering investment is saved.

Description

technical field [0001] The invention relates to a construction method of a gate pier arranged with an arc-shaped gate, in particular to a construction method of a gate pier fan-shaped steel bar passing through an arc gate pull rod support hinge seat. Background technique [0002] During the structural design of gate piers in water conservancy and hydropower projects, when arc-shaped gates are arranged, fan-shaped steel bars need to be arranged in the local tension area of ​​the gate pier near the arc gate support to prevent cracks in the gate pier due to local tension. According to the "Code for the Design of Hydraulic Concrete Structures" (SL 191-2008) (hereinafter referred to as the "Specification"), the local tensile reinforcement needs to meet the cross-sectional area requirements that can resist the thrust of the arc door support, and be arranged within the effective distribution range. The corresponding extension length and anchorage requirements must also be met. How...

AI Technical Summary

Problems solved by technology

However, when the arc door thrust is particularly large and requires a large cross-sectional area of ​​the fan-shaped steel bar, and the arc door tie rod hinge seat is arranged within the effective distribution range of the gate pier, if the distribution range is not changed, it will be affected by the arc door tie rod support hinge seat If the distribution range of the gate pier is reduced to avoid the hinged seat of the tie rod, the spacing between the steel bars will be reduced, which cannot meet the minimum steel bar spacing requirements for concrete pouring

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