暗渠大体积混凝土施工温度仿真分析与监测

Temperature Simulation Analysis and Field Monitoring of Mass Concrete in Underdrain Construction

暗渠施工时大体积混凝土温度的监测和控制至关重要。对边墙施工中大体积混凝土温度变化情况进行了现场监测,通过有限元数值模拟,获得了混凝土内部温度场。温度场模拟结果、温度历时曲线及混凝土内外温差曲线与实测数据吻合情况较好,说明数值模拟计算中对各参数的选取较为合理。

It is essential to monitor and control the temperature of mass concrete in the construction of underdrain works.The features and the development law of the inner concrete temperature field were obtained by field-monitoring the temperature of underdrain walls during the course of construction,as well as by establishing the FE model and then simulating the construction process.The simulation results agreed with field testing data very well such as temperature field,temperature-time curve and the temperature difference between inner and outer concrete,showing the chosen calculation parameters are reasonable.