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公开(公告)号：US10168263B2
公开(公告)日：2019-01-01
申请号：US15529815
申请日：2016-03-30
Applicant: SHENZHEN UNIVERSITY
Inventor： Dong Su
Abstract: A handheld constant-stiffness ring shear apparatus has a base and an annular rigid frame arranged on the base in a sleeved mode. An upper cover is buckled to the top of the rigid frame, a pressure transmission plate is fixed to the upper portion of the upper cover, and a rotary shaft is perpendicularly arranged in the center of the base. The rotary shaft penetrates through the pressure transmission plate and is fixed to the pressure transmission plate. A spanner is fixed to the top end of the rotary shaft, and a digital display instrument is embedded in the spanner. The handheld constant-stiffness ring shear apparatus is convenient to carry, easy to operate, economical and practical, and can be used for measuring the volume chance of a soil sample at a field location under the constant-stiffness condition in the shear force resisting and shearing process.
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公开(公告)号：US10451492B2
公开(公告)日：2019-10-22
申请号：US15771386
申请日：2016-03-30
Applicant: SHENZHEN UNIVERSITY
Inventor： Dong Su , Yueqin Jiang , Xiaohua Bao , Zhongliang Yu
Abstract: A zero-strain soil pressure sensor includes a shell provided with a hydraulic oil cavity and a cavity located below the hydraulic oil cavity, a processor, an outer elastic film arranged at the upper end of the hydraulic oil cavity, an inner elastic film arranged between the hydraulic oil cavity and the cavity, an outer strain bridge circuit connected with the outer elastic film, an inner strain bridge circuit connected with the inner elastic film, a piston communicated with the hydraulic oil cavity, and a driving mechanism connected with the piston. The outer strain bridge circuit, the inner strain bridge circuit and the driving mechanism are electrically connected with the processor. The invention has the beneficial effect that the piston is driven by the driving mechanism to control the oil pressure in the hydraulic oil cavity, external soil pressure is balanced through the oil pressure to keep the outer elastic film in an non-deforming state all the time, and only the inner elastic film is deformed, so that the soil arch effect and soil displacement are avoided, and thus the liquid pressure measured by the inner elastic film is the soil pressure, and the measurement result is more accurate.
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3.发明申请公开(公告)号：US20210270685A1
公开(公告)日：2021-09-02
申请号：US17325191
申请日：2021-05-19
Applicant: Shenzhen University
Inventor： Chengyu Hong , Xiangsheng Chen , Dong Su , Junkun Tan , Wenli Liu
Abstract: The present disclosure discloses an optical fiber sensing monitoring device for soil settlement and a settlement amount measurement method. The optical fiber sensing monitoring device includes a baseline rod that is internally hollowed. A plurality of settlement monitoring circular rings are sleeved outside the baseline rod, and are coaxial with the baseline rod; each settlement monitoring circular ring is provided with one trigger device that can spread an anchor by means of touching; the baseline rod is provided with through holes corresponding to the settlement monitoring circular rings; the trigger devices are provided with trigger sticks on the inner sides; and the trigger sticks extend into the baseline rod via the through holes.
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