风环境对大体积混凝土桥塔施工水化热的影响分析

uring the pylon construction of bridges crossing the river or sea, the hydration heat of massive concrete could be influenced by the complicated wind environments. However this influence is usually ignored in the existing study for such hydration heat. In this paper, the theoretical calculation method of hydration heat of concrete in wind environment is firstly proposed. Then a simulation of building process of massive pylon with the consideration of wind is established based on a practical engineering project. The accuracy of the proposed simulation is further verified by the monitoring data from the pre-installed sensors. Using the proposed simulation, a parametric study on the wind characters (velocity and direction) and structure measurements (segment measurements and cross-section) is conducted to investigate the influence of wind environments on the thermal and mechanical performance of bridge pylon during its construction. The results can be regarded as the theoretical guide and foundation to assure a good quality for the pylon construction of bridges crossing the river or sea in wind environments.