The Research On The Dynamic Simulation Of Tempreture And Structural Behavior Of Large-scale Prestressed Aqueduct

Aqueduct is the overflow bridge in canal structure set for connecting the channels. With the construction of a great quantity of large-scale water-transportation project, the structure style of aqueduct is extensively used in the water-transportation project in order to satisfy the needs of the water route crossing obstacles such as river, gully and highway. But along with the growth of the distance and carrying capacity of water-transportation project, the aqueduct becomes larger and more diversified gradually. In recent years, big span prestressed aqueduct is widely applied in the actual project, it put forward higher request for design and construction of aqueduct.As a kind of unique mass concrete thin-walled structure, aqueduct is always exposed to a natural environment. The change of temperature of pouring concrete in construction period and outside temperature has a significant influence up on the aqueduct. And because of the complex structure layout and various loads, the safety of large-scale prestressed aqueduct during construction and operation period can not be neglected. Based on in-site test at the construction site, This paper study the temperature variation of aqueduct under multiple factors during construction and its influence on the safety of structure with the method of numerical simulation. The structural behavior of large-scale prestressed aqueduct in operation period also be studied. The results can provide the basis for the structural design and guide the actual construction and maintenance. And the control measures can be proposed to ensure the quality of the project through calculation and analysis.