Construction method for prefabricated bridge steel jacket stand column

Abstract

The invention relates to a construction method for a prefabricated bridge steel jacket stand column. Internal steel bars of the stand column are prefabricated after structural analysis; and a jig frame is arranged in an adjustable mode so as to be matched with binding of reinforcement frameworks of different lengths, fine construction of installation and welding of annular stirrups in a steel jacket, pouring of steel jacket stand column and turnover and transportation of a finished product is facilitated, and the problem that due to the fact that the self weight of the steel jacket stand column reinforcement framework is large and loads are not evenly distributed, and a grouting sleeve deviates in the reinforcement framework hoisting process is solved. The reinforcement framework is put into a mold, a template is installed, and the reinforcement framework reaches a construction position in a horizontal state and is overturned to be in a vertical state; and the prefabricated stand column is stored in a preset area for storage after being subjected to concrete pouring, mold removal and curing. According to the method, material waste is reduced, cost is saved, an assembly type treatment mode replaces integrated treatment, repeated use of all parts and templates is achieved, efficiency is improved, waste is reduced, operability is high, precision is high, the construction progress is fast, the utilization rate of machine tools and equipment is improved, and the method is safe, environmentally friendly and free of pollution.

Description

technical field [0001] The invention relates to structural components; building materials; and the technical field of load-bearing elongated structural components, in particular to a construction method for a prefabricated assembled bridge steel sleeve column. Background technique [0002] With the increasingly tense urban land use and the increasingly complex traffic road network, the form of viaduct has greatly alleviated the congestion of the city and surrounding road networks, and also facilitated the planning of long-distance cross-domain traffic lines. Due to the increasing cost of labor, equipment and materials during the construction period, in order to reduce the construction cost and speed up the construction progress, the construction of the viaduct is gradually converted to prefabricated assembly. [0003] For the construction of bridge columns, the existing method is usually to process the column molds that meet the size requirements in the factory after obtaini...

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Problems solved by technology

[0003] For the construction of bridge columns, the existing method is usually to process the column molds that meet the size requirements in the factory after obtaining the various data of the columns, and then process the columns through concrete mold pouring; however, when the columns required by the construction site When the height is different, it is necessary to process multiple molds with different heights. After the column is processed, the used mold may be discarded because its height is inconsistent with the column height requirements of the new construction site. At the same time, when the factory produces columns It is necessary to process molds of the corresponding height according to the new column height, resulting in a large number of molds being discarded after one grouting process. The amount of mold discarded due to inconsistency in the size of the factory is far greater than the natural waste of molds. On the one hand, it causes a lot of waste of materials, The production cost of the factory is high. On the other hand, it takes a lot of time to produce the mold with the corresponding height before each column processing. The processing efficiency of the column is low, and the production income of the factory cannot be guaranteed.

[0004] Furthermore, in the traditional method, the column bottom form and the embedded base are fixed by welding, and the welding affects the stress distribution and other properties of the embedded base, which in turn leads to the load-bearing performance and flatness of the embedded base after the column bottom form is disassembled. This means that during the processing of the column, the column mold and the embedded base need to be in one-to-one correspondence. The same embedded base cannot carry and position different column molds. The use of the embedded base is basically one-time. The amount and consumption of processing materials do not match the frequency of use

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