IDS already has tools for loading and unloading of data. These include the dbimport, dbexport, dbaccess commands (load and unload), High Performance Loader (HPL), and dbload.
IDS还提供一些数据加载和卸载工具，包括：dbimport、dbexport、dbaccess命令(加载和卸载)、High Performance Loader (HPL)和dbload。
Performance tests consist of incremental loading and unloading of anchors to verify sufficient capacity to resist the test load verify the free length and evaluate the permanent set of the anchor.
性能试验应包括渐进式装卸锚杆，以验证锚杆有足够的能力抵抗试验荷载，确认自由长度，并估算锚杆的永久变形量。
The fixed end behaves as a plastic hinge, and the plastic region near the point where the concentrated load acts is developing, while that near the fixed end unloading.
固支端保持为塑性铰，集中荷载作用点附近塑性区扩展而固支端附近塑性区卸载阶段。
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