In-situ test system and method for subgrade dynamic resilient modulus

    公开(公告)号:US11913186B2

    公开(公告)日:2024-02-27

    申请号:US17617451

    申请日:2020-08-29

    CPC classification number: E02D1/00 G01D5/14 G01N3/36 G01S19/01

    Abstract: A loading module includes a test vehicle, a servo cylinder is mounted on the test vehicle, a piston rod of the servo cylinder is connected with a bearing plate acting on a subgrade surface, an annular loading plate is disposed around the bearing plate, and the loading plate is connected, through a force transmission rod, with a bearing tray on which a counterweight block is placed; a data collecting module includes a second high precision displacement sensor and a plurality of first high precision displacement sensors; a data processing module includes a computer, the computer is connected with a signal input end of the servo cylinder, an output end of the first high precision displacement sensor and an output end of the second high precision displacement sensor respectively, and performs inverse calculation for a dynamic resilient modulus value of a subgrade using a software.

    MEASURING SYSTEM AND MEASURING METHOD

    公开(公告)号:US20230023924A1

    公开(公告)日:2023-01-26

    申请号:US17791146

    申请日:2020-01-08

    Abstract: A measurement system for measuring a subgrade reaction coefficient of a plurality of layers having different depths in a ground is provided. The system includes an object provided on a ground surface of the ground. An earth pressure gauge measures an earth pressure of the plurality of layers with respect to a load of the object. A settlement gauge measures a settlement amount of the plurality of layers with respect to the load of the object. The disclosed technology calculates the subgrade reaction coefficient of the plurality of layers on the basis of the earth pressure and the settlement amount.

    Over-the-Stern Deep Digging Trenching Plow with Instrumentation for Assessing the Protective Capabilities of a Seabed Trench
    9.
    发明申请
    Over-the-Stern Deep Digging Trenching Plow with Instrumentation for Assessing the Protective Capabilities of a Seabed Trench 有权
    用于评估海底沟槽防护能力的仪器深度挖掘沟犁

    公开(公告)号:US20160376766A1

    公开(公告)日:2016-12-29

    申请号:US14749032

    申请日:2015-06-24

    Abstract: A seabed trenching plow has a chassis, a sled and a towing assembly. The towing assembly has a pair of wings extending laterally from each side of the chassis. The wings are aligned on an axis transverse to the chassis and adapted for connection to a towing line. The transverse axis is forward of the center of gravity of the plow and rearward of the sled, affording an over the stern releasable and retrievable trenching plow of sufficient weight and strength to excavate a three meter trench in a single pass. To assess the protective capabilities of the trench, a threshold signal indicative of a desired composition of seabed-trench soil is compared with a real-time data signal indicative of the actual to produce an alarm signal when the real-time data signal is not protective-capability compliant with the threshold signal.

    Abstract translation: 海底挖沟犁具有底盘,雪橇和牵引组件。 牵引组件具有从底盘的每侧横向延伸的一对翼。 翼部在横向于底盘的轴线上对准,并且适于连接到牵引线。 横向轴线位于犁的重心的前方,并且在雪橇的后方提供了一个足够的重量和强度的船尾可释放和可回收的挖沟犁,以便在单程中挖掘一个三米槽。 为了评估沟槽的保护能力,将表示海底土壤的期望组成的阈值信号与表示实际的实时数据信号进行比较,以在实时数据信号不保护时产生报警信号 能力符合阈值信号。

    Arrangement for determining the penetration depth on putting in place supporting elements into a water bed
    10.
    发明授权
    Arrangement for determining the penetration depth on putting in place supporting elements into a water bed 失效
    用于确定将支撑元件放入水床中的穿透深度的布置

    公开(公告)号:US07308821B1

    公开(公告)日:2007-12-18

    申请号:US08916106

    申请日:1997-08-21

    Applicant: Reink Pohlmann

    Inventor: Reink Pohlmann

    CPC classification number: E02D13/06 G01B7/26

    Abstract: With an arrangement for determining the penetration depth (10) when putting in place supporting elements (2) into a water bed (5), according to the invention, there is provided a pressure sensor (7) for measuring the water pressure which is fastenable to the supporting element (2) or to a device (1) connected to the supporting element (2). The readings (11) supplied by the pressure sensor (7) are transmitted via a signal lead (15) to an evaluation unit (16) which determines the penetration depth (10) of the supporting element (2) from the reading differences which occur during the sinking of the pressure sensor (7) on penetration of the supporting element (2) into the water bed (5).

    Abstract translation: 根据本发明,通过将根据本发明的将支撑元件(2)放置在适当位置的穿透深度(10)的布置来设置用于测量水压的压力传感器(7),该压力传感器 到支撑元件(2)或连接到支撑元件(2)的装置(1)。 由压力传感器(7)供应的读数(11)经由信号引线(15)传送到评估单元(16),该评估单元(16)根据所发生的读取差异确定支撑元件(2)的穿透深度(10) 在压力传感器(7)在支撑元件(2)穿入水床(5)时下沉期间。

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