Segment with concrete embedded with fluid-filled steel pipes

Patent metadata

Field	Value
Publication number	US-12492635-B2
Application number	US-202318187675-A
Country	US
Kind code	B2
Filing date	Mar 22, 2023
Priority date	Mar 29, 2022
Publication date	Dec 9, 2025
Grant date	Dec 9, 2025

Abstract

The present invention relates to an intelligent segment with concrete embedded with gas/liquid-filled steel pipes, the segment including a concrete portion, wherein the concrete portion serves as a main stress component of the segment, is made of ultra-high performance concrete and is provided with a hollow portion for arranging the steel pipes; a steel pipe portion, wherein the steel pipe portion includes the gas/liquid-filled steel pipes uniformly arranged on a tension side of the segment and penetrating through the entire segment in a circumferential direction, and a gas/liquid filling system and a pneumatic/hydraulic control system connected to the steel pipes; a reinforcing bar portion, wherein the reinforcing bar portion includes longitudinal bars for bearing the tension, stirrups for bearing the shear force and supports meeting construction structure requirements; and a joint portion, wherein the joint portion includes circumferential seam joints and longitudinal seam joints.

First claim

What is claimed is:

1 . A segment with concrete embedded with fluid-filled steel pipes, the segment comprising:
a concrete portion, wherein the concrete portion serves as a main stress component of the segment, is made of ultra-high performance concrete and is provided with a hollow portion for arranging the fluid-filled steel pipes; a steel pipe portion, wherein the steel pipe portion comprises the fluid-filled steel pipes uniformly arranged on a tension side of the segment and penetrating through the entire segment in a circumferential direction, and a fluid filling system and a pressure control system connected to the fluid-filled steel pipes; a reinforcing bar portion, wherein the reinforcing bar portion comprises longitudinal bars for bearing a tension, stirrups for bearing a shear force and supports; and a joint portion, wherein the joint portion comprises circumferential seam joints and longitudinal seam joints, each of the circumferential seam joints comprises a circumferential seam hand hole and an inclined bolt, and each of the longitudinal seam joints comprises a steel plate connector, a longitudinal seam hand hole and a straight bolt, wherein fluid filling valves are arranged in steel pipe spans and are used to ensure uniform distribution of an initial stress in the fluid-filled steel pipes, the pressure control system comprises pressure monitoring devices and pressure stabilizing devices are arranged at two ends of the fluid-filled steel pipes, the pressure monitoring devices are used to monitor an internal pressure of the fluid-filled steel pipes in real time, wherein when an internal pressure exceeds a preset internal pressure, fluids in the fluid-filled steel pipes are released by the pressure stabilizing devices to maintain a pressure balance in the fluid-filled steel pipes, and an overall stress and deformation conditions of a tunnel structure are fed back according to a change of a fluid pressure in the fluid-filled steel pipes.

2 . The segment according to claim 1 , wherein the plurality of fluid-filled steel pipes are arranged, and rib marks are formed on outer surfaces thereof and are configured to enhance anchoring between the fluid-filled steel pipes and the concrete.

3 . The segment according to claim 1 , wherein the fluids in the fluid-filled steel pipes comprises phase-change materials which are used to adjust a temperature and prevent freezing in a tunnel.

4 . The segment according to claim 1 , wherein the fluid-filled steel pipes are internally provided with support members for enhancing a rigidity of the fluid-filled steel pipes, and materials of the support members comprising alloy steel, high polymers or high-polymer capsules.

5 . The segment according to claim 1 , wherein the fluid-filled steel pipes are partially filled with a liquid which is used to absorb shocks and improve a shock resistance.

6 . The segment according to claim 1 , wherein a shape memory alloy net is arranged on an inner surface of the segment, and deformation of shape memory alloys in different regions is controlled by means of electrified heating excitation so as to adjust a local mechanical performance of the segment.

7 . The segment according to claim 1 , wherein circumferential seams of the segment are connected by inserting inclined bolts into the circumferential seam hand holes, the circumferential seam hand hole is formed in two sides of the circumferential seams in a staggered manner, and concave and convex mortises are uniformly formed at circumferential joints of the segment.

8 . The segment according to claim 1 , wherein longitudinal seams of the segment are connected to a circumferentially adjacent segment by matching steel plate connectors and/or hand hole embedded members with straight bolts installed in the longitudinal seam hand hole.

9 . An assembly of segments according to claim 8 , wherein each of the steel plate connectors is a complete straight steel plate, the complete straight steel plates of two circumferentially adjacent segments are fixedly connected by means of the straight bolts installed in the longitudinal seam hand hole, and two ends of the fluid-filled steel pipes in the segments are integrally welded to the steel plate connectors respectively; and
the hand hole embedded members are arranged in the longitudinal seam hand hole, openings in sections of the hand hole embedded members face downwards, inner side surfaces of the hand hole embedded members are integrally welded to the two ends of the fluid-filled steel pipes, and outer side surfaces of the fluid-filled steel pipes are connected to the circumferentially adjacent segment by means of the straight bolts.

Assignees

• Univ Tongji

Inventors

• Yan Zhiguo
• Zhu Hehua
• Li Jiantao
• Shen Yi
• Yu Tongsheng

Classifications

• Y02E10/20

  Hydro energy · CPC title

• E21D11/083

  Methods or devices for joining adjacent concrete segments · CPC title

• E21D11/08 Primary

  with preformed concrete slabs {(backfilling the space between the slabs and the rock E21D11/105)} · CPC title