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MODERN TUNNELLING TECHNOLOGY 2018, Vol. 55 Issue (1) :178-183    DOI:
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A Calculation method of slurry volume-weight during trenching construction of a diaphragm wall based on the stability of slot wall
(1 China Railway Construction Investment Group Corporation Limited, Beijing 100055; 2 School of Civil Engineering, Central South University, Changsha 410075)
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Abstract Based on the limit equilibrium method, mechanical models for the overall stability and local stability of a slot wall are established, calculation formulas for the critical slurry volume weight values are derived to guarantee stability of the slot wall during trenching construction, a design method for the slurry volume weight is obtained on basis of slot wall stability during trenching construction of the diaphragm wall and a case application is carried out.The results show that the proposed calculation method for slurry volume weight is reliable and it suggests that slurry volume weight calculations under considering local stability of the slot wall should be taken when the similar project locates in loose strata with sand and pebbles.
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Keywords： Diaphragm wall   Soft ground   Volume weight of slurry   Limit equilibrium method   Overall stability   Lo? cal stability     
Abstract： Based on the limit equilibrium method, mechanical models for the overall stability and local stability of a slot wall are established, calculation formulas for the critical slurry volume weight values are derived to guarantee stability of the slot wall during trenching construction, a design method for the slurry volume weight is obtained on basis of slot wall stability during trenching construction of the diaphragm wall and a case application is carried out.The results show that the proposed calculation method for slurry volume weight is reliable and it suggests that slurry volume weight calculations under considering local stability of the slot wall should be taken when the similar project locates in loose strata with sand and pebbles.
Keywords： Diaphragm wall,   Soft ground,   Volume weight of slurry,   Limit equilibrium method,   Overall stability,   Lo? cal stability     
Cite this article:   
.A Calculation method of slurry volume-weight during trenching construction of a diaphragm wall based on the stability of slot wall[J]  MODERN TUNNELLING TECHNOLOGY, 2018,V55(1): 178-183
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