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群桩对动、静态荷载的响应受到桩——土——桩之间相互作用的影响。采用静动态相互作用因子来研究小位移情况下群桩的响应。本文介绍群桩刚度和阻尼的封闭解表达式并说明动、静态相互作用的差异。人们对大位移下的群桩响应了解很少。文中介绍了承受水平向静荷载的群桩的现场试验。本文的目的,是要研究在大位移情况下群桩的性状,重点在于讨论桩间相互作用因子和群桩刚度随着位移增加而变化的情况。
The response of the pile group to dynamic and static loads is affected by the interaction between the pile-soil-pile. Static and dynamic interaction factors were used to study the response of the pile group under small displacements. This paper introduces the closed solution expressions of the stiffness and damping of group piles and explains the differences between dynamic and static interactions. People know very little about the response of pile groups under large displacements. This article describes field tests of group piles subjected to horizontal static loads. The purpose of this paper is to study the traits of group piles under large displacement conditions. The focus is on the discussion of the interaction between piles and the stiffness of pile group as the displacement increases.