盾构隧道近接斜交侧穿桥梁桩基变形计算方法

王超,朱春洲,邹金锋,刘波,张晗秋,马江锋

Calculation approach for deformation of adjacent pile foundation caused by diagonal intersection with side penetration construction of shield tunnel

Chao WANG,Chunzhou ZHU,Jinfeng ZOU,Bo LIU,Hanqiu ZHANG,Jiangfeng MA

表 1 土体物理力学参数取值情况统计表

Tab.1 Statistics on values of physical and mechanical parameters of soil

岩土层名称 Γ / m γ / (kN∙m−3) cs / kPa φ / (°) Es / MPa ν 杂填土 1.8 17.8 5.5 16.5 — — 粉质黏土 5.4 17.6 25.2 24.4 8.5 0.35 粗砂 3.2 20.2 0 22.3 12.6 0.29 砾砂 14.2 22.5 0 23.6 16.3 0.25 强风化泥质粉砂岩 2.6 23.2 10.2 20.2 22.5 0.21 中风化泥质粉砂岩 20.8 23.6 13.6 21.8 25.3 0.18