nature laboratory

Amendment of calculation forms for laterally loaded pile based on similar principle of NL Method;

水平推力桩NL法相似原理计算表格的修正

The NL method is a new nonlinear method for calculating the lateral bearing capacity of piles,summarizing several methods at home and abroad and basing on a great number of measured values,which is one of the major computational methods by the code for marine pile foundation.

NL法是在总结国内外多种计算方法的基础上,依据大量桩基水平静载荷实测资料提出的一种新的桩基水平承载力非线性计算方法,并被港工桩基规范列为主要计算方法。

Based on studying of former methods of lateral loaded pile groups,linked with present technical code of pile foundation an the NL method,a improved method of calculating lateral loaded pile groups,which is based on elasticity theory method,is proposed in the paper.

在总结前人对于水平承载群桩计算方法研究的基础上,结合我国现行的桩基规范和目前国内新兴的NL法,以Poulos H。

‘NL-895 poplar was investigated.

选用9种外生菌根菌对NL-895杨进行菌根化试验,并采用HPLC法,分别测定各菌根菌在离体培养条件下培养液和菌丝体中的吲哚乙酸(IAA)、玉米素(Z)、赤霉素(GA)和脱落酸(ABA)含量。

Genetic transformation of poplar NL-80106 transferred by Bt gene and its insect-resistance;

杨树NL-80106转Bt基因植株的获得及抗虫性