摘要
为提高软土地基沉降计算精度,以天津市滨海新区津滨高速桥头水泥搅拌桩复合地基为例,分别利用数值分析法、基于分层总和法的复合模量法及压力扩散法对桥头水泥搅拌桩复合地基进行了沉降计算,将计算结果与实测沉降进行对比分析,基于误差产生的原因引入了桩体模量发挥程度的概念,对加固区复合模量计算表达式进行了系数修正。结果表明,通过误差修正可达到要求的计算精度。
For the purpose of improving the settlement calculation accuracy of soft foundation,the final settlements of cement mixing pile composite foundation at the Binhai Highway bridgehead were calculated with numerical analysis,composite modulus and pressure diffusion methods. The calculating results were compared with actual settlement. The definition of Pile Modules Exerting Degree was introduced according to the causes of the calculating errors and the computational expressions of composite modulus in reinforced area were corrected. The result shows that the required calculation accuracy can be obtained by error correction.
出处
《军事交通学院学报》
2016年第4期74-79,共6页
Journal of Military Transportation University
关键词
软土地基
水泥搅拌桩
沉降计算
误差分析
soft foundation
cement mixing pile
settlement calculation
error analysis
