基于复合土钉支护结构的“荷载分担法”

Load-sharing Method Based on Composite Soil Nailing Structure

提出一种考虑搅拌桩分担荷载的计算模型即"荷载分担法",假定荷载由搅拌桩和土钉共同承担,其中搅拌桩所能承担的荷载由它的抵抗强度反算得到,而土钉分担的荷载由总荷载减去搅拌桩分担的荷载算得到。在此基础上进行复合支护结构的设计,实践表明:这种方法思路明确,计算简单,具有一定的探讨价值。

Considering the load sharing for mixing pile,this paper presents a computational model,which is called load-sharing method.It is assumed that the load from mixing piles and soil nails will share the responsibility,and can bear the load of mixing pile resistance,which can be obtained from its strength.The soil nailing shared load can be attained by subtracting sharing load of mixing pile from the total load.Practical project shows that the composite structure of the soil nailing design has advantages of clear idea,simple calculation and usable value.