# US 12,215,467 B2 · Integrate structure for damage management of road-bridge transition sections in permafrost regions

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- Number: US 12,215,467 B2
- Document ID: US12215467B2
- Status: Granted
- Kind: B2
- Application number: 18/659,853
- Filed: 2024-05-09
- Published: 2024-12-12
- Granted: 2025-02-04
- Earliest claimed: 2023-06-06
- Assignees: Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences
- Applicants: Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences
- Inventors: Qihao Yu; Zhenyu Zhang; Dangzhan Wang; Yaojun Zhao; Xinbin Wang; Delong Zhang
- Web page: https://patentgrep.com/patent/US12215467B2

## CPC

- E01C 3/06: Methods or arrangements for protecting foundations from destructive influences of moisture, frost or vibration {(heating devices E01C11/26; draining the subbase of roads E01F5/00)}
- Y02A 30/60: Planning or developing urban green infrastructure
- E01C: CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR (forming roads or like surfaces by compacting or grading snow or ice E01H)
- Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE

## Abstract

The present invention provides an integrated structure for damage management of road-bridge transition sections in permafrost regions, including a plurality of slope surface cooling blocks, a plurality of horizontal equilibrium condensing tubes, and a plurality of cooling flanges and targeting heat pipe arrays. The plurality of slope surface cooling blocks are arranged on the surfaces of the subgrade slope and abutment conical slope; the plurality of horizontal equilibrium condensing tubes are installed inside the abutment-back subgrade; the plurality of cooling flanges are arranged on the side wall of the abutment; the targeting heat pipe arrays are arranged on one side of the subgrade and close to the abutment foundation.

## Claims

### Claim 1

An integrated structure for damage management of road-bridge transition sections in permafrost regions, comprising a plurality of slope surface cooling blocks (1), a plurality of horizontal equilibrium condensing tubes (2), and a plurality of cooling flanges (3) and targeting heat pipe arrays (7);
wherein the plurality of slope surface cooling blocks (1) are arranged on the surfaces of the subgrade slope (4) and the abutment conical slope (5);
the plurality of horizontal equilibrium condensing tubes (2) are installed inside the abutment-back subgrade;
the plurality of said cooling flanges (3) are arranged on the abutment side wall;
the targeting heat pipe arrays (7) are arranged on one side of the subgrade, consisting of a plurality of variable-angle heat pipes in evaporation sections (72), wherein the evaporation section (72) is buried below the ground surface, and the condensation section (71) of the heat pipes is directly inserted above the ground surface at a vertical angle, the plurality of heat pipes are distributed in an approximately symmetrical fan shape along the slope toe line of the abutment conical slope (5) with the center of the abutment foundation (6) as the axis;
wherein each cooling flange (3) is vertically installed at the side wall of the abutment, and pasted or anchored by thermal conductive adhesive; the horizontally adjacent cooling flanges (3) are in contact with each other, and the vertically adjacent cooling flanges (3) reserve a space for heat release section; wherein the cooling flange comprises a shading flake (31), an insulation layer (32) and a heat pipe unit (33); one side of the shading flake (31) is exposed, and the other side thereof is connected with the insulation layer (32), and the insulation layer (32) is connected with the heat pipe unit (33); the heat pipe unit (33) is vertically adhered or anchored on the abutment side wall by a thermal conductive adhesive.

### Claim 2 (depends on 1)

The integrated structure for damage management of road-bridge transition sections in permafrost regions according to claim 1, wherein the slope surface cooling blocks (1) cover the entire surface of the abutment conical slope (5), and extend outward by 2 m˜4 m along the natural ground surface at the slope angle.

### Claim 3 (depends on 1)

The integrated structure for damage management of road-bridge transition sections in permafrost regions according to claim 1, wherein the slope surface cooling blocks (1) are arranged on the surface of the subgrade slope (4), and the laying length along the subgrade direction is 20 m˜50 m behind the abutment.

### Claim 4 (depends on 1)

The integrated structure for damage management of road-bridge transition sections in permafrost regions according to claim 1, wherein the plurality of horizontal equilibrium condensing tubes (2) are arranged inside the horizontal subgrade behind the abutment and staggered in upper and lower layers along the height of embankment; the horizontal spacings of the horizontal equilibrium condensing tubes (2) in the two layers are the same, both being 1 m˜3 m; the horizontal equilibrium condensing tubes (2) in the lower layer are arranged on the bottom surface of the embankment, and a spacing between the horizontal equilibrium condensing tubes (2) in the upper and lower layers is 0.5 m˜2.0 m.

### Claim 5 (depends on 1)

The integrated structure for damage management of road-bridge transition sections in permafrost regions according to claim 1, wherein the evaporation section (72) faces the abutment foundation (6), and a horizontal projection position of an end of the evaporation section (72) is located outside the abutment foundation (6); at the same time, the evaporation section (72) and the condensation section (71) form an included angle of α, α=90°˜180°.

### Claim 6 (depends on 5)

The integrated structure for damage management of road-bridge transition sections in permafrost regions according to claim 5, wherein the included angle α is determined by the following formula:
α
=
arccos
⁡
(
l
L
)
;
where: l is the horizontal distance from the buried position of the heat pipe to the outer side of the abutment foundation (6); L is the length of the evaporation section (72).