公开(公告)号：US20210372900A1

公开(公告)日：2021-12-02

申请号：US17057909

申请日：2020-02-14

Applicant: QINGDAO UNIVERSITY OF TECHNOLOGY

Inventor： Peng ZHANG ,  Jiuwen BAO ,  Shuguo LI ,  Tiejun ZHAO

IPC: G01N5/02 ,  G01N33/38 ,  G01N3/08 ,  G01N3/16

Abstract: An apparatus and a method for testing water absorption of concrete in a direction parallel with load applying direction are provided. The apparatus includes a loading device, a water filling device, and a monitoring device. The loading device includes an upper support plate and a lower support plate connected with the upper support plate via multiple threaded rods, and a space for placing a concrete specimen formed between the upper support plate and the lower support plate. The water filling device includes a water filling cylinder having a side connected with a water supply tank via an inlet pipe, and another side connected with a water storage tank via an outlet pipe. The monitoring device includes a mass sensor arranged under the water storage tank and a strain gauge for detecting change of stress of the concrete specimen.

公开(公告)号：US20210356451A1

公开(公告)日：2021-11-18

申请号：US17286829

申请日：2020-06-11

Applicant: QINGDAO UNIVERSITY OF TECHNOLOGY

Inventor： Penggang WANG ,  Zuquan JIN ,  Tiejun ZHAO ,  Dongshuai HOU ,  Li TIAN ,  Peng ZHANG ,  Xiaomei WAN ,  Siyao GUO ,  Yupeng TIAN

IPC: G01N33/38 ,  G08B21/18 ,  H04N7/18 ,  G08B3/10 ,  G08B13/196

Abstract: A life-cycle performance intelligent-sensing and degradation warning system and method for concrete structures are disclosed. The warning system comprises a main control module, a multifunctional sensor module, an anti-theft module and a critical warning module. Environmental parameters in concrete are monitored by the multifunctional sensor module, and the remaining service life of a concrete structure is accurately predicted through a life prediction model according to the temperature, humidity, chloride ion concentration and pH at different depths, and a critical chloride ion concentration and a structure stress status that are dynamically obtained. In addition, during warning analysis, a targeted correction method is designed for acquired data, and temperature and pH correction is carried out for real-time monitoring data of the chloride ion sensor to further guarantee the accuracy of monitoring data, such that scientific references are provided for durability evaluation, protection and restoration of the structure.

公开(公告)号：US11161210B2

公开(公告)日：2021-11-02

申请号：US16683550

申请日：2019-11-14

Applicant: QINGDAO UNIVERSITY OF TECHNOLOGY ,  CHONGQING UNIVERSITY ,  SHANGHAI JINZHAO ENERGY SAVING TECHNOLOGY CO., LTD

Inventor： Changhe Li ,  Qingan Yin ,  Yanbin Zhang ,  Huajun Cao ,  Zhenjing Duan ,  Cong Mao ,  Wenfeng Ding ,  Naiqing Zhang ,  Lan Dong ,  Xiufang Bai ,  Menghua Sui ,  Yonghong Liu ,  Wentao Wu ,  Teng Gao ,  Min Yang ,  Dongzhou Jia ,  Runze Li ,  Yali Hou

IPC: B23Q3/157 ,  B23Q11/10 ,  B23C1/06 ,  B23Q15/12 ,  B23Q17/09

Abstract: The disclosure provides a milling system and method under different lubrication conditions. The system uses a tool to mill the workpiece, a force measuring system to measure the milling force, a tool change system to replace the tools, a tool storage to store the tools. It can store the tools, provide the lubricating oil to the milling surface, select different tools according to different processing conditions, select the best angle differences of the unequal spiral angle tools according to different conditions comprising dry cutting, casting-type lubrication, minimal quantities of lubrication or minimal quantities of nanofluid lubrication, and/or choose the optimal tool according to different cutting parameters in order to obtain the minimum milling force.

公开(公告)号：US11155989B1

公开(公告)日：2021-10-26

申请号：US17234827

申请日：2021-04-20

Applicant: QINGDAO UNIVERSITY OF TECHNOLOGY

Inventor： Ben Mou ,  Zuquan Jin ,  Wanqiu Zhou ,  Wenfeng Liu ,  Tao Yu

IPC: E04B1/24 ,  E04B1/30

Abstract: A double-steel tube concrete beam-column joint with internal FRP bar connectors is provided. The double-steel tube concrete beam-column joint includes double-steel tube columns, I-beams, a joint connector, an internal support member and external ring plates. Each double-steel tube column includes an internal steel tube and an external steel tube. The joint connector includes an internal connecting tube and an external connecting sleeve which are both circular steel tubes. The internal support member is a columnar structure and has two ends regularly formed with bolt holes in a circumferential direction. Each external ring plate comprises a horizontal portion and an annular portion perpendicular to the horizontal portion. Upper and lower double-steel tube columns are connected through the joint connector and the internal support member, the two ends of the internal support member are inserted into an upper internal steel tube and a lower internal steel tube, respectively.

公开(公告)号：US11084136B2

公开(公告)日：2021-08-10

申请号：US16683605

申请日：2019-11-14

Applicant: QINGDAO UNIVERSITY OF TECHNOLOGY ,  CHONGQING UNIVERSITY ,  SHANGHAI JINZHAO ENERGY SAVING TECHNOLOGY CO., LTD

Inventor： Changhe Li ,  Qingan Yin ,  Huajun Cao ,  Yonghong Liu ,  Wenfeng Ding ,  Naiqing Zhang ,  Lan Dong ,  Zhenjing Duan ,  Yanbin Zhang ,  Xiufang Bai ,  Menghua Sui ,  Wentao Wu ,  Gao Teng ,  Min Yang ,  Dongzhou Jia ,  Runze Li ,  Yali Hou

IPC: B23Q3/157 ,  B23Q11/10 ,  B23C1/06 ,  B23Q3/155

Abstract: The disclosure provides a method and system for milling injected cutting fluid under different working conditions. By analyzing influence of airflow fields in a milling area under different working conditions on injection of cutting fluid, an influence rule of a helical angle and a rotation speed of a cutter on the flow field is quantitatively analyzed, an optimal target distance of a nozzle, an angle between the nozzle and a milling cutter feeding direction and an angle between the nozzle and the surface of a workpiece are comprehensively determined, the nozzle is set according to a determined setting manner, and lubricating oil is sprayed to the milling area by utilizing the nozzle.

公开(公告)号：US20210190672A1

公开(公告)日：2021-06-24

申请号：US17058564

申请日：2020-02-14

Applicant: QINGDAO UNIVERSITY OF TECHNOLOGY

Inventor： Peng ZHANG ,  Jiuwen BAO ,  Jianan WEI ,  Zhijie ZHUANG ,  Tiejun ZHAO

IPC: G01N17/00 ,  G01N33/38

Abstract: The disclosure relates to a device and method for a dry-wet cycle simulation test of concrete in a tidal zone and a splash zone. A main structure includes a liquid storage tank, a test chamber, a communicating pipe, air holes of the liquid storage tank, air holes of the test chamber, ceiling fans, steel pipes, a support frame, an upper water level sensor, a lower water level sensor, a temperature and humidity sensor, a temperature sensor, a chamber body support, a communication valve, a pipe support, a water inlet pump, a water inlet valve, a water outlet pipe, a water outlet pump, a water outlet valve, spray water pipes, spray heads, and a control box. The control box can control and record test parameters in real time, so that the boundary between the tidal zone and the splash zone is clear.

公开(公告)号：US10962664B2

公开(公告)日：2021-03-30

申请号：US16652419

申请日：2018-10-27

Applicant: Qingdao University of Technology

Inventor： Wenfeng Liu

IPC: G01V1/00 ,  G01V1/30 ,  G06N7/00

Abstract: A method for assessing a performance-based seismic design by setting a seismic risk starts from the exceedance probability of the performance level. The method is configured to determine the structural performance level by setting an exceedance probability, determine the seismic demand when the performance level is constant, set the exceedance probability of the seismic demand in combination with the seismic risk of a set earthquake to finally determine the ground motion input and establish a novel probabilistic seismic risk assessment method that reaches the performance level. The main control and objective of the design are significantly enhanced by using this method.

公开(公告)号：US10962077B2

公开(公告)日：2021-03-30

申请号：US16937492

申请日：2020-07-23

Applicant: Qingdao University of Technology

Inventor： Chunwei Zhang ,  Hao Wang

IPC: F16F9/53 ,  F16F7/10 ,  F16F15/00 ,  F16F15/027 ,  B61F5/24 ,  B64G1/22 ,  B66C13/06 ,  E04B1/98

Abstract: An active composite variable damping rotational control device includes a variable damping module and a power module. The variable damping module includes a magnetorheological fluid tank and a rotational inertia wheel. The rotational inertia wheel is arranged in the magnetorheological fluid tank fully filled with magneorheological fluid. The power module includes a device tubular cavity, a driver, an encoder and a speed changer. The driver is fixed on the inner wall of the device tubular cavity. The driver, the encoder and the speed changer are coaxial. A driving shaft of the driver passes through the speed changer and extends into the magnetorheological fluid tank to be fixed perpendicularly at the center of the rotational inertia wheel. The control effect of the present invention may not be greatly affected by the change of a structural form and the change of an external load.

公开(公告)号：US10961696B2

公开(公告)日：2021-03-30

申请号：US16624909

申请日：2018-07-05

Applicant: Qingdao University of Technology

Inventor： Ben Mou ,  Yan Wang ,  Yi Liu ,  Ye Liu

IPC: E04B1/24 ,  G01M5/00 ,  E04H9/02

Abstract: A fabricated intelligent joint provided with particle damping chambers for energy dissipation includes a core steel frame, an external fully-fabricated steel pipe column, a fully-fabricated annular beam-column connecting assembly, a structural health detection system and particle damping chambers. The core steel frame is located in the external fully-fabricated steel pipe column, is concentric with the external fully-fabricated steel pipe column and comprises a circular hollow steel keel and a plurality of protruding steel plate wings. The external fully-fabricated steel pipe column is formed by splicing a plurality of arc steel pipe column sheets. A space between the external fully-fabricated steel pipe column and the circular hollow steel keel of the core steel frame has the particle damping chambers installed therein and has concrete poured therein. A large quantity of spherical rubber particles is contained in the particle damping chambers.

公开(公告)号：US10927275B2

公开(公告)日：2021-02-23

申请号：US16608633

申请日：2019-06-04

Applicant: Qingdao University of Technology

Inventor： Shaochun Li ,  Dongshuai Hou ,  Yongjuan Geng ,  Wenjuan Zhang ,  Zuquan Jin ,  Yaguang Zhu ,  Youlai Zhang

IPC: C09D183/04 ,  C09D5/10 ,  C08K3/22 ,  C08K9/06 ,  C09D7/62

Abstract: The present invention relates to the field of building surface coating technologies, and in particular, to an alumina sol-silane composite material and a preparation method and application thereof. The alumina sol-silane composite material provided in the present invention is prepared by raw materials including the following components by weight parts: 5 to 45 parts of alumina sol, 30 to 90 parts of silane, 3 to 10 parts of silane coupling agent, and 1 to 5 parts of dispersant. A hydrophobic anticorrosive coating can be formed after coating the alumina sol-silane composite material provided in the present invention to a surface of a cement-based material, and has good waterproof performance and corrosion resistance.