摘要
支盘桩是近几年发展较快的具有较高承载力的新型桩,造型上类似于变截面桩或扩径桩,但在成桩机理及施工工艺上均有不同。本次研究中利用FLAC3D数值计算方法分析支盘桩的受力机理,模拟了在不同沉积土层中支盘桩的适用性。研究表明支盘桩的受力主要靠支盘承受荷载,支盘桩的承载力是由上部的支盘到下部桩的端承作用逐步发挥的。在模量值相对较高的不同沉积土层中,均可采用支盘桩,天然土层强度越高,支盘桩的效益越明显,软土层中采用支盘桩的效果越不好。
The cast-in-place pile with plates is a new type one with high bearing capacity in the near future, it is similarly variable section pile or expanded diameter pile in shape, but all differ from them in pile made mechanism and in construction technology. The actual application of cast-in-place pile with plate in engineering have already proved its advantage , Therefore, it＇s necessary to study and perfect the bearing mechanism and design theories of cast-in-place pile with plates further. Make use of the method of FLACw numerical simulation analyze the bearing mechanism of cast-in-place pile with plates, the applicability of cast-in-place pile with plates in different sediment soil layers have been simulated. Imitating result is, the force of cast-in-place pile with plates support load depend on plates mostly, bearing capacity of cast-in-place pile with plates works gradually from the upper plate to the end bearing effect of pile. In the different sediment soil layers that compression modulus is higher comparatively, all can use cast-in-place pile with plates, the natural soil layer strength is more high, the benefit of adopting cast-in-place pile with plates is more obvious, the effect of adopting castin-place pile with plates in soft soils are not obvious.
出处
《水科学与工程技术》
2009年第3期41-44,共4页
Water Sciences and Engineering Technology
关键词
支盘灌注桩
受力机理
沉积土层
FLAC3D
cast-in-place pile with plates
bearing mechanism
sediment soil layer
FLAC3D
