Abstract
It is of great significance to study the deformation characteristics of the lining of a long‐distance pressure culvert. The lining of a pressure culvert has the characteristics of strong concealment and remarkable influence on the whole performance. The existing research on deformation characteristics mostly adopts nondestructive detection, and the accuracy is restricted by many factors. In this paper, the lining of a pressure culvert is taken as the research object, and in situ tests of the structure are carried out and numerical simulations are conducted. Based on field monitoring data, the mechanical and deformation responses of the lining structure under external water and earth pressure are analyzed. On this basis, the finite element method is used to establish a three‐dimensional finite element model, which further analyzes the deformation and mechanical characteristics of the lining structure under different conditions of internal water pressure, geological conditions, and internal water pressure alongside geological conditions. Therefore, theoretical guidance and technical support for the lining structure design of long‐distance pressurized water delivery culverts are provided.
Highlights
With the rapid development of the urban economy, the problem of urban water use is becoming increasingly serious. To solve this problem effectively, the transregional water transfer project is a flexible and reliable solution, and the pressure culvert is a common hydraulic structure in water diversion projects [1,2,3]. e safety performance of water delivery culverts depends on the quality of the lining to a great extent [4,5,6]. erefore, it is necessary to evaluate the lining quality of long-distance pressure culverts
There are many methods to evaluate the lining quality of long-distance pressure culverts. One such treatment method is nondestructive testing which is an effective and widely used method to ensure the safety of tunnel, such as the ground penetrating radar (GPR) [7,8,9], the multichannel analysis of surface waves (MASW) [10, 11], the infrared thermography (IRT) [12,13,14,15], and the Rayleigh waves [16]
The results of nondestructive testing were different from the reality results in some special stratum conditions, and this illustrated that the method of nondestructive testing presents some limitations
Summary
With the rapid development of the urban economy, the problem of urban water use is becoming increasingly serious. There are many methods to evaluate the lining quality of long-distance pressure culverts. One such treatment method is nondestructive testing which is an effective and widely used method to ensure the safety of tunnel, such as the ground penetrating radar (GPR) [7,8,9], the multichannel analysis of surface waves (MASW) [10, 11], the infrared thermography (IRT) [12,13,14,15], and the Rayleigh waves [16]. E practical application of 5.1 m largescale cast-in-place concrete prestressed culverts is rare in China and is one of the major technical problems in the entire water supply project Top and sidewall thickness is 0.45 m, the bottom thickness is 0.8 m, and a high-strength nonbonding low-relaxation steel strand to provide culvert prestressed is used. e practical application of 5.1 m largescale cast-in-place concrete prestressed culverts is rare in China and is one of the major technical problems in the entire water supply project
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