Arch sealing temperature optimization method suitable for intelligent water supply

Abstract

The invention provides an arch sealing temperature optimization method suitable for intelligent water supply. The arch sealing temperature optimization method comprises the steps that an arch dam grid model reflecting dam bin block characteristics is established; calculating by adopting a numerical simulation method to obtain a stable temperature field and a quasi-stable temperature field of the arch dam under a control water level condition; the arch sealing temperature is determined according to different elevation partitions of different dam sections; calculating a temperature load initial value in an operation period; drawing up different elevation partition arch sealing temperature coefficients of different dam sections, and adjusting each elevation arch sealing temperature value of each dam section; calculating by adopting a numerical simulation method to obtain a group of dam stress fields; establishing an arch sealing temperature optimization objective function; when the target function value is minimum, the optimal solution in the selected working condition is obtained; carrying out simulation on the whole process of dam construction to obtain the crack resistance safety and the transverse joint opening condition in the dam concrete construction period; and when the anti-cracking safety of dam concrete meets the conventional requirement and the opening degree of the transverse joint before grouting meets the requirement, the arch sealing temperature is the final arch sealing temperature. Accurate control over the arch sealing temperature is achieved, and the temperature control difficulty is lowered.

Description

technical field [0001] The invention belongs to the field of water conservancy and hydropower engineering construction, and the disclosed content relates to an arch sealing temperature optimization method, in particular to an arch sealing temperature optimization method suitable for intelligent water passage. Background technique [0002] Temperature load is one of the main loads of arch dams, which directly affects the stress and stability of the dam. The temperature of the arch closure is a key factor determining the magnitude of the temperature load. The arch sealing temperature of early dams is generally taken as the annual average temperature of the dam site area, which is relatively rough. In addition, the actual arch sealing temperature is often difficult to meet the design requirements, and there are a lot of cracking phenomena after completion. In the later period, as the simulation research on the reservoir water temperature and dam temperature field continued to d...

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Problems solved by technology

[0005] Aiming at the problems of low degree of accuracy of arch sealing temperature field of arch dams and poor suitability in severe cold regions, the present invention proposes an arch sealing temperature determination method and implementation method suitable for intelligent water passage, so that the arch sealing temperature can be guaranteed during the operation period of the dam Under safe conditions, reduce the difficulty of temperature control and water flow and the risk of cracking during construction

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