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以防腐后的麦秸秆和石灰加筋固化滨海盐渍土,解决由盐渍土的盐胀和溶陷引起的低强度和大变形问题。将布筋区域设计为上半部、中部、下半部、上部1/3与下部1/3处分别布筋,共5种布筋区域;将麦秸秆切割成圆管状、半圆管状、1/4圆管状、圆管碾压后的随机形状,共4种加筋横截面形状。加筋盐渍土和加筋石灰盐渍土的三轴UU抗剪强度表明,适宜的布筋区域均为下半部,适宜的加筋横截面形状均为1/4圆管状。麦秸秆的布筋区域和加筋横截面形状对加筋盐渍土和加筋石灰土的抗剪强度均具有明显影响。加筋可有效地提高黏聚力,但对内摩擦角影响较小。麦秸秆适宜作加筋材料,5种布筋区域和4种麦秸秆截面形状的加筋条件下,均可提高滨海盐渍土的抗剪强度和抗变形性能。
The antiseptic wheat straw and lime are used to reinforce the coastal saline soil to solve the problems of low strength and large deformation caused by salt expansion and dissolution of the saline soil. The reinforcement area is designed as the upper half, the middle, the lower half, the upper 1/3 and the lower 1/3 respectively, with a total of five kinds of reinforcement areas; the wheat straw is cut into a round tube, a semicircular tube, 4 round tube, tube random shape after rolling, a total of 4 kinds of reinforced cross-sectional shape. The triaxial UU shear strength of reinforced saline soil and reinforced lime saline soil shows that the suitable reinforcement area is the lower half, and the suitable reinforced cross-sectional shape is 1/4 circular tube. The straw reinforcement area and the reinforced cross-sectional shape of wheat straw have a significant effect on the shear strength of reinforced saline soil and reinforced limestone soil. Reinforcing can effectively improve the cohesion, but less impact on the internal friction angle. Wheat straw suitable for reinforced materials, 5 kinds of reinforcement area and 4 kinds of wheat straw cross-sectional shape of the reinforced conditions, can improve the coastal saline soil shear strength and deformation resistance.