地基比例系数m值对比研究

Contrastive Study on m Value of Proportional Coefficient of Foundation Coefficient

地基比例系数m值对桩身的受力及变形有一定影响,但国内多个行业标准所给出的地基比例系数m值差异较大。针对该问题,首先,对各行业标准及专著进行系统性的梳理,并总结出四类地基比例系数m值;其次,对四类地基比例系数m值之间进行横向对比;最后,以桩板墙结构为例,对比分析四类地基比例系数m值所计算出的锚固段长度,结果表明采用《铁路路基支挡结构设计规范》的水平地基比例系数m值,较其它三类偏低,锚固段长度偏长。

Themvalue of proportional coefficient of foundation coefficient has certain effect on the force and deformation of pile;however,there exists great difference on themvalue among Chinese codes of industries.Herein firstly,on the basis of systematic collating of industry standards and monographs,four types of m-value of proportional coefficient were summarized;secondly, horizontal comparison was conducted between thesemvalues;finally, with the example of pile-plank wall structure,the length of anchorage section calculated by thesemvalues were compared and analyzed.The result shows that themvalue of proportional coefficient of horizontal foundation in line with Design Code for Railway Subgrade Retaining Structure is lower than the other three types,and the relatively longer anchorage section is provided.