Study on Mechanical Properties of Large Diameter Reinforced Concrete Jacking Pipe
In order to analyze the variation law of mechanical properties of large-diameter reinforced concrete jacking pipe,the pressure char-acteristics around the jacking pipe,the spatial distribution law of contact pressure and the influence law of mud pressure on jacking force of large-diameter reinforced concrete pipe jacking pipe were studied based on a comprehensive pipe gallery project.The results show that the con-tact pressure fluctuates in the range of 15～250 kPa at all positions.The effective contact earth pressure around the pipe at all positions is basi-cally concentrated in the range of 0～80 kPa,and the overall performance of the hole wall is relatively stable.The waveform of the top contact pressure at the corresponding position of No.13 pipe section and No.16 pipe section is basically the same,and the difference of the contact pressure value is not large,that is,the change law of the contact pressure and the mud pressure at the corresponding part of the axial pipe sec-tion in the synchronous grouting area is basically the same.
国家科技期刊平台
NSTL
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