摘要
通过主动侧加载模拟开挖卸载,进行了基坑SMW工法围护结构与型钢围护结构的室内模型对比试验。试验结果表明:SMW工法相对于单独型钢围护结构,由于水泥土对型钢的围箍作用,使型钢、水泥土成为一整体,共同协调工作,提高了型钢的刚度,同时有效地起到了减小水平位移的作用。SMW工法结构内力相对于单独型钢围护结构内力,由于水泥土的作用,其内力明显要小,与工程实测规律一致。从不同角度探讨了SMW工法的工作特性、型钢-水泥土组合结构的相互作用机理。
model comparison tests of SMW engineering method and shaped steel exterior-protected construction are proceeded by loading on active side to simulate unloading on excavation side. Test results show that： shaped steel and cement soil of SMW engineering method can be a whole body and perform jointly compared with single shaped steel exterior-protected construction because of cement soil enclosing of shaped steel, so that stiffness of shaped steel is increased; and horizontal displacement can be decreased effectively. Internal force of SMW is less than that of single shaped steel exterior-protected construction obviously because of cement soil; this is accordant with actual measurement of engineering. Performance character and interacting mechanism of SMW are discussed from various angles.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2008年第4期1121-1126,共6页
Rock and Soil Mechanics
关键词
SMW工法
模型试验
水平位移
结构内力
工作机理
SMW engineering method
model test
horizontal displacement
internal force of structure
performance mechanism
