Hollow bridge pier capping construction method

Abstract

The invention discloses a hollow bridge pier capping construction method. The method comprises the steps of a, notch rebar forming; b, hollow pier pouring forming; c, supporting plate pouring forming; d, supporting plate installation; e, capping. Compared with the method that a supporting plate is directly craned to the upper chamfering position on the top of a hollow pier, the method has the advantages that due to the arrangement of an L-shaped notch, craning, unloading and positioning are precise, fixation and installation are convenient, the thickness of the supporting plate can be matched with the depth of the L-shaped notch easily, it is easy to make the top surface of the supporting plate to be located on the plane where the top of the hollow pier is located, and it does not require massive concrete pouring forming work to form a construction supporting plane of a solid section; due to the fact that the L-shaped notch is formed in the original upper chamfering position, it can be ensured that the original designed opening size is unchanged, and the mechanical property of the structure is optimized; meanwhile, all supporting components of the capping construction method are invested at a time, design is simple, manufacturability is high, manufacturing cost is low, energy saving and environment protection are well achieved, structural stability is high, and follow-up solid section construction safety and construction quality are guaranteed.

Description

technical field [0001] The invention relates to a bridge pier construction method, in particular to a bridge hollow pier capping construction method. Background technique [0002] In order to reduce the self-weight of the pier, or to ensure that the pier has a small inertial force during an earthquake, or to reduce the load of the pier on the weak foundation, the pier of the road and railway bridge often adopts a hollow pier, that is, there is a cavity inside the pier, and the mechanics of the hollow pier It has good performance and saves building materials. It is especially suitable for the construction of high piers. Since there is a solid section on the top of the hollow pier for erecting the box girder, it is necessary to solve the problem of vertical support in the hollow part of the hollow pier during the construction of the solid section; the existing There are two construction methods for the capping construction of bridge hollow piers: one is the support method, tha...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the existing bridge hollow pier capping construction method in the prior art. For the support plate directly hoisted to the upper chamfer of the hollow pier top, the positioning of lifting and unloading is inaccurate and inconvenient to fix. And the support plate exceeds the plane of the top of the hollow pier, and a large amount of concrete needs to be poured to form the above-mentioned deficiencies of the construction support plane of the solid section. It is provided that an L-shaped notch is set in the inner cavity of the hollow pier top, and the shape and thickness of the support plate Adapted to the L-shaped notch, it is convenient and easy to lift, locate and install the support plate. The construction method of hollow pier capping

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