ABSTRACT
The effects of ambient temperature and solar radiation cause a temperature difference between the surface and the interior of the concrete structure, resulting in a non-linear temperature gradient. When the deformation of the concrete structure due to the temperature gradient is constrained, thermal stress will be generated. This thermal stress affects safety and durability of the concrete structure. In order to study the temperature gradient of the concrete hollow column along the horizontal thickness direction, a concrete hollow column was cast in-place and 25 temperature sensors were arranged, of which 23 temperature sensors were arranged along the horizontal thickness direction of the concrete hollow column, and 2 temperature sensors were placed in the natural environment. Based on the temperature monitoring data, a comparative analysis of the temperature gradient of the concrete hollow column along the horizontal thickness direction under typical weather conditions in different seasons was carried out. And the temperature gradient change law of the concrete hollow column along the horizontal thickness direction was discussed. The research provides a reference for the design, management and maintenance of the concrete hollow column.
