U型渡槽运行期抗裂性能试验研究

racks appeared in most of the huge aqueducts which are under construction or have been built. Survey data show that only 20% of cracks were due to external load, and the rest occurred as a result of temperature, shrinkage and deformation. The key problem is that how to effectively prevent the formation and development of cracks in U-style aqueducts. To solve this problem, the resist-cracking experiment of the U-style aqueduct model under the artificial climate simulation environment has been carried out. Through the measurement of temperature and strain of the U-style aqueduct during running period, analyze the cracking-risk areas and suggest several methods of preventing the cracks appearing in the U-style aqueduct.