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EXPERIMENTAL STUDY ON COEFFICIENT OF FRICTION BETWEEN A BOX CULVERT AND MIXTURE COMPOSED OF THIXOTROPIC SLURRY AND CLAY OR STEEL PIPE DURING CULVERT BEING
PUSHED BY PIPE-ROOF |
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Abstract Up to now，the subway crossing project through Hongxu Road is a pipe-roof project with the biggest cross-section box culvert in the world. It is constructed in saturated soft soil stratum in the Beihong Road located in the middle ring-road in Shanghai. Coefficients of friction between the box culvert and mixture composed of thixotropic slurry and clay or steel pipe are of great importance for rationally designing jacks used for pushing the culvert. The coefficients are studied by test. Five kinds of mixtures composed of different proportional thixotropic slurry and clay are used for test. The results show that the coefficients reach maximum when the mixture is completely composed of clay and they reach or approach minimum when the mixture is completely composed of thixotropic slurry. In addition，the coefficients will decrease generally as mass of thixotropic slurry proportion to mass of clay increases.
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Received: 13 May 2004
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WANG Zhaoyu1, 2, ZHAO Weihua1, 2*, JU Nengpan1, 2, LIN Qinghua1, 2, TAN Lin1, 2, HU Xiaolong1, 2. Constitutive model for shear creep behavior of fault gouge containing crushed rock#br#[J]. , 2026, 45(4): 1266-1276. |
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