Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for testing reflection crack resistance of semi-rigid base asphalt pavement structure
The invention discloses a method for testing reflection crack resistance of a semi-rigid base asphalt pavement, and belongs to the field of asphalt pavement structures. Establishing an anti-reflection crack fatigue equation by testing the anti-reflection crack fatigue life of each asphalt material under the action of different loads; aiming at a given pavement structure, respectively calculating the tensile stress at the bottom of each asphalt material layer when each layer above the asphalt material layer is not cracked and each layer below the asphalt material layer is cracked, and obtaining the anti-reflection crack fatigue life of the material layer; adding the anti-reflection crack fatigue life of each layer to obtain the anti-reflection crack fatigue life of the whole structure; dividing the result by a direction coefficient and a lane coefficient which consider the randomness of the actual road driving position to obtain the bearable traffic volume of the structure before the reflection crack appears. The device and the method can be used for testing the number of times of traffic load action borne by the semi-rigid road surface gradually extending upwards from the cracking of the semi-rigid base layer to the road surface, so that the reflection crack of the road surface is controlled.
本发明公开了一种测试半刚性基层沥青路面抗反射裂缝能力的方法，属于沥青路面结构领域。通过测试各沥青类材料在不同荷载作用下的抗反射裂缝疲劳寿命，建立抗反射裂缝疲劳方程；针对给定路面结构，分别计算出各沥青类材料层在位于其上的各层均未开裂，而位于其底下各层均已开裂时，该层底部的拉应力，得到该层材料的抗反射裂缝疲劳寿命；将各层的抗反射裂缝疲劳寿命相加，得到整个结构的抗反射裂缝疲劳寿命；将其除以考虑实际路面行车位置随机性的方向系数和车道系数，即可得到该结构出现反射裂缝前可以承受的交通量。本发明可用于测试半刚性路面由半刚性基层开裂逐步向上扩展至路表所能够承受的交通荷载作用次数，从而控制路面的反射裂缝。
Method for testing reflection crack resistance of semi-rigid base asphalt pavement structure
The invention discloses a method for testing reflection crack resistance of a semi-rigid base asphalt pavement, and belongs to the field of asphalt pavement structures. Establishing an anti-reflection crack fatigue equation by testing the anti-reflection crack fatigue life of each asphalt material under the action of different loads; aiming at a given pavement structure, respectively calculating the tensile stress at the bottom of each asphalt material layer when each layer above the asphalt material layer is not cracked and each layer below the asphalt material layer is cracked, and obtaining the anti-reflection crack fatigue life of the material layer; adding the anti-reflection crack fatigue life of each layer to obtain the anti-reflection crack fatigue life of the whole structure; dividing the result by a direction coefficient and a lane coefficient which consider the randomness of the actual road driving position to obtain the bearable traffic volume of the structure before the reflection crack appears. The device and the method can be used for testing the number of times of traffic load action borne by the semi-rigid road surface gradually extending upwards from the cracking of the semi-rigid base layer to the road surface, so that the reflection crack of the road surface is controlled.
本发明公开了一种测试半刚性基层沥青路面抗反射裂缝能力的方法，属于沥青路面结构领域。通过测试各沥青类材料在不同荷载作用下的抗反射裂缝疲劳寿命，建立抗反射裂缝疲劳方程；针对给定路面结构，分别计算出各沥青类材料层在位于其上的各层均未开裂，而位于其底下各层均已开裂时，该层底部的拉应力，得到该层材料的抗反射裂缝疲劳寿命；将各层的抗反射裂缝疲劳寿命相加，得到整个结构的抗反射裂缝疲劳寿命；将其除以考虑实际路面行车位置随机性的方向系数和车道系数，即可得到该结构出现反射裂缝前可以承受的交通量。本发明可用于测试半刚性路面由半刚性基层开裂逐步向上扩展至路表所能够承受的交通荷载作用次数，从而控制路面的反射裂缝。
Method for testing reflection crack resistance of semi-rigid base asphalt pavement structure
一种测试半刚性基层沥青路面结构抗反射裂缝能力的方法
TIAN XIAOGE (Autor:in) / YU SHUI (Autor:in) / LI GUANGYAO (Autor:in) / REN QUAN (Autor:in) / YANG FAN (Autor:in) / MIN XUEFENG (Autor:in) / LIU YIMEI (Autor:in)
23.05.2023
Patent
Elektronische Ressource
Chinesisch
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