公开(公告)号：US20230149988A1

公开(公告)日：2023-05-18

申请号：US17916946

申请日：2021-01-04

Applicant: SHANDONG JIAOTONG UNIVERSITY

Inventor： Jin LI ,  Enzhou DI ,  Miaozhang YU ,  Shen ZUO ,  Peng JIANG ,  Xinzhuang CUI

IPC: B09B3/35 ,  B09B3/40

CPC classification number: B09B3/35 ,  B09B3/40 ,  B09B2101/65

Abstract: A geogrid prepared by recycling medical waste and a preparation method therefor, and use in foundation reinforcement. The method includes: recycling medical waste for treatment and processing the medical waste into a crushed material; adding modified filler and processing aids, and selecting high-strength fiber bundles for compounding and melting with the crushed material and pressing and stretching to prepare a geogrid. The medical waste is any combination of one or more used medical plastic products and medical plastic products that expire and are not used. The high-strength fiber bundles are more than one bundle of fiber materials commonly used for manufacturing geogrids on the market. The modified filler is a stabilizer for improving the stability of component materials to heat and light. The processing aids are enhancers for improving the performance of the component materials.

公开(公告)号：US20240110345A1

公开(公告)日：2024-04-04

申请号：US17768648

申请日：2021-01-04

Applicant: SHANDONG JIAOTONG UNIVERSITY

Inventor： Jin LI ,  Guangbo LIU ,  Fengkun CUI ,  Xu DONG ,  Xinzhuang CUI

IPC: E01D19/02 ,  E01D21/00

CPC classification number: E01D19/02 ,  E01D21/00

Abstract: A corrugated pipe connection device for a continuous section at the top of a continuous T-shaped beam bridge pier. The connection device includes a combined steel pipe telescopic device and a corrugated pipe connector, the interiors being hollow; the connector includes a first clamping member for clamping a wall surface of a corrugated pipe; one end of the telescopic device is a second clamping member with the same structure as the first; the other end is a telescopic steel pipe which is telescopic in the length direction; and the telescopic steel pipe is connected to the connector. The device replaces a corrugated pipe between two T-shaped beams, thereby avoiding problems such as breakage and slurry leakage caused by an original construction mode. The device can stretch out and draw back according to a distance between the T-shaped beams, and steel strands can be stranded by means of a stranding machine.

公开(公告)号：US20240158994A1

公开(公告)日：2024-05-16

申请号：US18284418

申请日：2022-10-31

Applicant: SHANDONG JIAOTONG UNIVERSITY ,  SHANDONG UNIVERSITY ,  CHONGQING UNIVERSITY ,  JINAN JINYUE HIGHWAY ENGINEERING CO., LTD.

Inventor： Xinzhuang CUI ,  Jin LI ,  Qing JIN ,  Shen ZUO ,  Dalu XIONG ,  Peng JIANG ,  Xiaoning ZHANG ,  Yefeng DU ,  Kai YUAN ,  Chongsheng XIN

IPC: E01C3/04 ,  C08F220/28 ,  C08K3/22 ,  C08K3/34 ,  E01C3/00 ,  E01C19/00

CPC classification number: E01C3/04 ,  C08F220/281 ,  C08K3/22 ,  C08K3/346 ,  E01C3/003 ,  E01C19/00 ,  C08K2201/014

Abstract: An adjustment method of moisture content and dense state for a hydrogel improved subgrade based on weather-resistance during an in-service period, including: step 1: carrying out surface cleaning and compaction of ground; step 2: preparing hydrogel improved subgrade raw material; step 3: paving the prepared material on the surface to form first-layer improved subgrade; and step 4: paving plain soil subgrade onto the first-layer. The method combines the water absorption and release function of the modified resin and the characteristic of the gel state thereof, to pave the improved subgrade in layers, which can absorb water and slightly expand when the water content in the subgrade is increased to a certain threshold value, and a strength and compactness protective layer can also be formed at the connection sections of the ground and the subgrade, and the subgrade and the pavement, to prevent the pot-cover effect from occurring.