The application discloses a
mass concrete temperature measuring and crack preventing device and a construction method, which comprises a reinforcing mesh arranged on a foundation bottom surface, a pipeline support and a
cooling pipe, the reinforcing mesh is arranged above the foundation bottom surface through support blocks, at least two rows of support assemblies are arranged on the reinforcing mesh at intervals, each row of the support assemblies is composed of at least two U-shaped supports, the
cooling pipe is arranged between adjacent support assemblies, the
cooling pipe is connected with the U-shaped supports through a pipeline connecting piece, one end of the cooling
pipe is a water inlet end, and the other end is a water outlet end, the water inlet end is connected with a
water supply pump body, the water outlet end is connected with a water return pipeline, and the water return pipeline is connected with a cooling
water source to form a circulating loop. The grid positioning
assembly is used to accurately arrange the cooling
pipe in the same height, the cooling
pipe structure combining softness and
hardness and the multiple locking type pipeline connecting piece are adopted, the problems of poor arrangement precision, easy displacement and
water leakage of the traditional pipeline are effectively solved, the construction difficulty is reduced, and the operation stability of the water circulating
system is improved.