A fine-tuning anchor and method capable of compensating for prestress loss in water-rich sand layers

Abstract

The invention discloses a fine-tuning anchorage and method capable of compensating for the loss of prestress in a water-rich sand layer, including a base plate, a control cabinet, a frame, a connecting plate and a third connecting rod. The top of the hydraulic cylinder is movably mounted with a multi-stage hydraulic rod, the top of the multi-stage hydraulic rod is rotationally connected to one end of the third connecting rod through the second rotating shaft, and the other end of the third connecting rod is connected to the bottom of the frame through the second rotating shaft. The shaft seat fixed on one side of the end is rotatably connected, a lead screw is fixed in the middle of the groove on the upper surface of the frame, a stepping motor is fixed on the upper surface of the frame at one end of the lead screw, and the stepping motor and the lead screw in the lead screw The rod is connected by rotation, the middle of the lower surface of the connecting plate is movably connected with the lead screw, the upper surface of the connecting plate is fixed with a motor, and one end of the motor is rotated and installed with an anchor through a transmission shaft. The invention has the advantages of adjusting the angle of the anchorage all the time during the construction to adapt to the prestress and reducing the possibility of soil layer collapse.

Description

Technical field [0001] The present invention relates to the field of construction technology in the rich sand layer, in particular a fine-tuning anchor and method capable of compensating the prestressed loss of the rich sand layer. Background technique [0002] With the acceleration of urbanization, the city can use space has become an obstacle to the development of urban development, and the use of urban development and urban underground space is one of the solutions. The construction of the subway and various integrated gallery effectively solves the difficulties of urban population flow and the imperfect various municipal services. [0003] The rich sand layer is characterized by large sand containing sand, non-sand, and pebble content less than 10%, rich in groundwater. This formation has a characteristic in the case where the local space is leaked, and the formation flow is large, and it is easy to cause a wide range of formation disturbances. At the same time, the soil laye...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a fine-tuning anchor and method capable of compensating for the loss of prestress in the water-rich sand layer, which has the advantages of adjusting the angle of the anchor at all times during construction to adapt to the prestress and reduce the possibility of soil subsidence. Solved the problem that the change of prestress may cause the soil layer to be partially squeezed and collapse

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