Method for calculating mass concrete water pipe cooling temperature field

Abstract

The invention provides a method for calculating a mass concrete water pipe cooling temperature field. The method comprises the following steps of: first, giving an initial temperature field of concrete, and determining whether a cooling water pipe supplies water or not, calculating directly if the cooling water pipe does not supply water, otherwise performing the following steps: calculating on-way water temperature of the cooling water pipe in the concrete, taking a generalized water pipe node as a common node to synthesize an integral matrix according to the traditional method, adding a formed matrix into the integral matrix, and solving to acquire the concrete water pipe cooling temperature field in the next time step. By adopting the method, water pipe information is concealed in a node of an existing unit, so that the pre-processing workload is reduced; a finite element calculation format and a water pipe on-way water temperature calculation formula of the water pipe cooling temperature field are established, no iteration is required in the calculating process, so that the solving speed is ensured, and temperature changes close to the water pipe can be reflected.

Description

technical field [0001] The invention relates to a method for calculating the cooling temperature field of a large-volume concrete water pipe, and belongs to the technical field of large-volume concrete construction. Background technique [0002] In the construction of mass concrete, the temperature of the early concrete will increase due to the heat release of cement hydration. Can produce the stress of drawing inside the concrete during the cooling stage. In order to control the temperature stress in concrete, cooling water pipes are often buried in mass concrete construction projects to cool down through water. Temperature control is an important measure in the construction process of mass concrete. The difficulty in calculating the water pipe cooling temperature field is that there are many water pipes inside the concrete. If each water pipe is discretized, the number of units in the model will increase dramatically. At the same time, the water temperature in the water...

AI Technical Summary

Problems solved by technology

Its disadvantage is that it can only directly calculate the water temperature along the way of the iron pipe. For the water temperature along the way of the plastic pipe, it is necessary to draw the grid of the plastic pipe, and the pre-processing is complicated, which affects the calculation speed.

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