Method for manufacturing ultra-large reinforced concrete cooling tower reduced scale test model

Abstract

The invention relates to a method for manufacturing an ultra-large reinforced concrete cooling tower reduced scale test model. According to the spatial size of the cooling tower reduced scale model, hard plastic foam formworks of the reduced scale model are cut layer by layer through an electric heating wire, a supporting column framework is welded through iron wires of different types, a meridian-direction iron gauze and a circumferential iron gauze in a tower cylinder are welded after all the inner formworks are installed, then outer formworks are installed in sequence, and a cylinder body is obtained through pouring. Compared with the prior art, the method has the advantages that the manufactured cooling tower reduced scale model can continuously change on the aspects of radius and thickness in the horizontal plane along with the change of the height of the model, the outer surface of the test model is smooth and continuous, the geometric size of the model especially the thickness of the cooling tower cylinder can reach control accuracy at the millimeter level, the method is easy and convenient to operate and low in cost, and the required materials can be easily purchased in the market.

Description

technical field [0001] The invention belongs to a method for making an engineering structure test model, in particular to a method for making a scaled-down test model of a super-large reinforced concrete cooling tower. Background technique [0002] The natural draft cooling tower is a thin-walled structure with a large space. Due to the special shape of the structure, its safety performance has been widely concerned by people. In the safety performance analysis of reinforced concrete cooling towers, experimental research is a very important part. However, at present, the production of this kind of space thin-walled structure test model has become a difficulty that restricts the extensive development of cooling tower test research. In order to correctly reflect the geometric characteristics and force characteristics of the cooling tower, it is necessary that the tower of the cooling tower scale test model can imitate the prototype cooling tower as a rotating hyperbolic parabo...

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Problems solved by technology

The manufacturing method of this scale test model has the following disadvantages: (1) The wooden inner formwork is complicated to manufacture, takes a long time to manufacture, the production cost is high, and the accuracy is not easy to guarantee; (2) The wooden inner formwork is not easy to produce according to the prototype structure with high precision hyperbolic paraboloid; (3) The radius of the tower changes with the height, and the barbed wire mesh arranged orthogonally is directly embedded in the tower, which will not be able to directly simulate the distribution of the hoop and meridian reinforcement in the prototype tower; (4) Artificial The method of smearing mortar to make the model tower can not control the thickness of the wall at each height, and the thickness error of the wall has a great influence on the test results; (5) Since the wall of the wall is thin, the wall of the masonry is easy to lose moisture And cracking, resulting in difficulties in model maintenance

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