A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Structural maintenance and design method of semi-rigid base-layer asphalt pavement
The invention discloses a structural maintenance and design method of a semi-rigid base-layer asphalt pavement. The structural maintenance and design method is characterized by comprising the following steps: rating pavement cracking conditions according to a pavement condition index PCI, and sampling asphalt pavements with intermediate or serious cracking conditions by virtue of cooperation of a falling weight deflectometer FWD and a pavement drilling core, so as to acquire design parameters of each structural layer, wherein the design parameters include the thickness and the modulus of each structural layer of a primary pavement; detecting the fatigue property of an asphalt mixture of an overlay, wherein the fatigue property can be estimated by measuring volume parameters and substituting the volume parameters into an empirical formula and can be actually measured by virtue of an indoor fatigue test; establishing a 3D pavement overlay structure finite element model, counting maximum equivalent strain epsilonVM at the bottom of an asphalt overlay layer at a crevice position, substituting epsilonVM into a fatigue equation, and correcting a pavement fatigue life by virtue of an environmental correction coefficient, so as to finally obtain the thickness of the asphalt overlay layer.
Structural maintenance and design method of semi-rigid base-layer asphalt pavement
The invention discloses a structural maintenance and design method of a semi-rigid base-layer asphalt pavement. The structural maintenance and design method is characterized by comprising the following steps: rating pavement cracking conditions according to a pavement condition index PCI, and sampling asphalt pavements with intermediate or serious cracking conditions by virtue of cooperation of a falling weight deflectometer FWD and a pavement drilling core, so as to acquire design parameters of each structural layer, wherein the design parameters include the thickness and the modulus of each structural layer of a primary pavement; detecting the fatigue property of an asphalt mixture of an overlay, wherein the fatigue property can be estimated by measuring volume parameters and substituting the volume parameters into an empirical formula and can be actually measured by virtue of an indoor fatigue test; establishing a 3D pavement overlay structure finite element model, counting maximum equivalent strain epsilonVM at the bottom of an asphalt overlay layer at a crevice position, substituting epsilonVM into a fatigue equation, and correcting a pavement fatigue life by virtue of an environmental correction coefficient, so as to finally obtain the thickness of the asphalt overlay layer.
Structural maintenance and design method of semi-rigid base-layer asphalt pavement
HUANG XIAOMING (author) / ZHU TANYONG (author) / GAO YING (author)
2015-06-24
Patent
Electronic Resource
English
IPC:
E01C
Bau von Straßen, Sportplätzen oder dgl., Decken dafür
,
CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE
Semi-rigid pavement filling material and semi-rigid asphalt pavement
| European Patent Office | 2024