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《Chinese Journal of Underground Space and Engineering》 2007-S2
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Study on the Freezing Damage Mechanism and Its Prevention in Cold Region Rock Tunnel

TIAN Jun-feng,YANG Geng-she,LIU Hui (Institute of Architecture and Civil Engineering ,Xi'an University of Science &Technology ,Xi'an 710054, China)  
Freezing damage is a common engineering disease, there are many reasons to cause the freezing damage , the frost heaving force is the main of them. Therefore, in the study of cold region rock tunnel, to avoid and reduce freezing damage,the key issue is to study the occurance、expansion and the prevention of the frost heaving force. This paper has carried out a systematic study on the frost damage. There are three factors causing frost heaving, first, the temperature must below enough for water freezing; second, the lining must have enough rigidity to prevent the expand of water at its freezing and the third enough water source. According to elastoplasticity mechanics computing method, using finite element method software ANSYS to set up a 3 - D Model to calculate and analyze the frost heaving force under different modulus of elasticity or weather. Comparing the results of theoretical analysis and numerical simulation, the prophylactico - therapeutic measures for frost heaving force of rock tunnel in cold region are advanced, They may serve as guidance for design and construction of cold region rock tunnel.
【Fund】: 国家自然科学基金资助项目(40372119);; 教育部优秀青年教师基金资助项目(2091)。
【CateGory Index】: U457.2
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