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中文摘要：
借鉴盾构隧道中扰动区域的计算方法,推导出矩形顶管施工对土体的扰动范围;运用应力释放理论及应力传递理论,推导了矩形顶管隧道周围土体任意一点的超孔隙水压力计算公式;通过算例分析矩形顶管施工产生的土体超孔隙水压力分布规律.研究结果表明：隧道顶部与隧道底部超孔隙水压力分布规律相近,都为凹曲线,但隧道顶部到超孔隙水压力值为0的地表处距离更长,因此曲线分布更缓;隧道底部到扰动边界的距离更短,因此曲线分布更陡;随着埋深增加,隧道周围土体超孔隙水压力数值变大,呈上小、下大分布.
英文摘要：
The calculation method of the scope of soil disturbance caused by rectangular pipe jacking con- struction is deduced by it in shield tunnel area. Based on the stress release theory and stress transfer theory, the excess pore water pressure calculation formula of soil around any of the rectangular pipe jacking tunnel is deduced. The distribution rule of soil excess pore water pressure due to rectangular pipe jacking construction is analyzed through case study. The results show that the distribution of excess pore water pressure at the top of the tunnel is similar to that of the bottom. Both of them are a concave curve; but the top of the tunnel to the surface of the pore water pressure value of 0 is longer, leading to the curve distri- bution slower. The distance between the bottom of the tunnel and the disturbed boundary is shorter; the curve distribution is steeper. With the increase of buried depth, the value of excess pore water pressure of the soil around the tunnel becomes larger; and its distribution at the upper is small, the lower is large.
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