A construction method for capping a hollow pier

Abstract

The invention provides a capping construction method for a hollow pier. The capping construction method for the hollow pier comprises the following steps: prefabricating a capping cover plate; performing pier wall construction on the hollow pier and reinforcing the top of the hollow pier from chamfer reinforcement layout; when the strength of the concrete on the wall of the hollow pier reaches higher than 75%, hoisting the prefabricated capping cover plate; closing gaps of the prefabricated capping cover plate through mortar; performing concrete pouring construction on a tray and a cap, wherein the concrete pouring construction comprises binding the tray and pouring cap rebar and concrete; and finishing the capping construction of the hollow pier. The capping construction method for the hollow pier greatly reduces the construction period by prefabricating the cover plate, can perform capping directly when the wall strength of the hollow pier reaches higher than 75%; performs capping by means of the disposable prefabricated cover plate, does not need to set up a scaffold, eliminates the time for setting up and dismantling the scaffold, greatly reduces the working period, simultaneously saves the cost on the scaffold, saves a large amount of cost and is remarkable in economic benefit.

Description

technical field [0001] The invention belongs to the field of bridge construction, and in particular relates to a construction method for capping a hollow pier. Background technique [0002] Thin-walled hollow piers are often used in highway and railway engineering. It effectively realizes the light weight of bridge piers, has good mechanical properties, and can be applied to very high piers. Thin-walled hollow piers with a height of more than 30 meters are very common. The tray and top cap on the top of the hollow pier body are solid sections Part, the transition from the hollow segment to the solid segment is a difficult problem in construction. At present, there are two conventional methods for building construction to solve the vertical load-bearing. One is to build a full house of scaffolding; the other is to pre-bury corbels near the top of the hollow pier and set up formwork supports in the air. These two methods have the following problems for the capping constructi...

AI Technical Summary

Problems solved by technology

These two methods have the following problems for the capping construction of hollow piers higher than 30 meters or even higher than 50 meters: first, the inner space of the hollow pier is small and difficult to operate; second, the required scaffolding or supports are too high , it is technically difficult to grasp; the third is that the construction period is long, the utilization rate of the tower crane is low, and the turnover rate of the formwork is reduced at the same time; the fourth is that the design requires continuous pouring of the solid section of the pier top, the tray, and the top cap, and the concrete poured at one time Large volume, high requirements on the stability of the bracket

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