Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Full-flexible asphalt pavement structure design method
The invention discloses a full-flexible asphalt pavement structure design method, belongs to the field of asphalt pavement structure design in road engineering, and aims to solve the technical problem that the existing asphalt pavement structure design is disjointed from material design. According to the technical scheme, the method specifically comprises the steps of S1, determining the accumulative equivalent axis number Ne within the design age limit of a full-flexible asphalt pavement structure, and preliminarily planning the pavement structure; S2, testing and calculating the asphalt concrete complex modulus of the horizon, and constructing an asphalt concrete fatigue model; S3, according to an asphalt concrete strain allowable value calculation formula, calculating an asphalt mixture layer bottom flexural-tensile strain allowable value epsilon t-allowable; S4, calculating a roadbed top surface compressive strain allowable value epsilon z-allowable according to a roadbed top surface compressive strain calculation formula; S5, determining a bending-tensile strain calculation value epsilon t-calculation and a soil-based compressive strain calculation value epsilon z-calculation of a structural calculation layer by applying an elastic layered system theory; and S6, carrying out structure checking calculation by taking the conditions that the bending-tensile strain allowable value epsilon t-allowable is greater than the calculation value epsilon t-calculation of the bottom of the asphalt mixture layer and the compressive strain allowable value epsilon z-allowable is greater than the calculation value epsilon z-calculation of the top of the soil foundation as checking calculation indexes.
本发明公开了一种全柔性沥青路面结构设计方法，属于道路工程中沥青路面结构设计领域，本发明要解决的技术问题为现行沥青路面结构设计与材料设计脱节，技术方案为：该方法具体如下：S1、确定全柔性沥青路面结构设计年限内累计当量轴次Ne，并初拟路面结构；S2、测试计算层位的沥青混凝土复数模量，构建沥青混凝土疲劳模型；S3、根据沥青混凝土应变允许值计算公式计算沥青混合料层底弯拉应变容许值εt‑容许；S4、根据路基顶面压应变计算公式计算路基顶面压应变容许值εz‑容许；S5、应用弹性层状体系理论确定结构计算层位弯拉应变计算值εt‑计算及土基压应变计算值εz‑计算；S6、以沥青混合料层底弯拉应变容许值εt‑容许＞计算值εt‑计算，土基顶部压应变容许值εz‑容许＞计算值εz‑计算为验算指标，进行结构验算。
Full-flexible asphalt pavement structure design method
The invention discloses a full-flexible asphalt pavement structure design method, belongs to the field of asphalt pavement structure design in road engineering, and aims to solve the technical problem that the existing asphalt pavement structure design is disjointed from material design. According to the technical scheme, the method specifically comprises the steps of S1, determining the accumulative equivalent axis number Ne within the design age limit of a full-flexible asphalt pavement structure, and preliminarily planning the pavement structure; S2, testing and calculating the asphalt concrete complex modulus of the horizon, and constructing an asphalt concrete fatigue model; S3, according to an asphalt concrete strain allowable value calculation formula, calculating an asphalt mixture layer bottom flexural-tensile strain allowable value epsilon t-allowable; S4, calculating a roadbed top surface compressive strain allowable value epsilon z-allowable according to a roadbed top surface compressive strain calculation formula; S5, determining a bending-tensile strain calculation value epsilon t-calculation and a soil-based compressive strain calculation value epsilon z-calculation of a structural calculation layer by applying an elastic layered system theory; and S6, carrying out structure checking calculation by taking the conditions that the bending-tensile strain allowable value epsilon t-allowable is greater than the calculation value epsilon t-calculation of the bottom of the asphalt mixture layer and the compressive strain allowable value epsilon z-allowable is greater than the calculation value epsilon z-calculation of the top of the soil foundation as checking calculation indexes.
本发明公开了一种全柔性沥青路面结构设计方法，属于道路工程中沥青路面结构设计领域，本发明要解决的技术问题为现行沥青路面结构设计与材料设计脱节，技术方案为：该方法具体如下：S1、确定全柔性沥青路面结构设计年限内累计当量轴次Ne，并初拟路面结构；S2、测试计算层位的沥青混凝土复数模量，构建沥青混凝土疲劳模型；S3、根据沥青混凝土应变允许值计算公式计算沥青混合料层底弯拉应变容许值εt‑容许；S4、根据路基顶面压应变计算公式计算路基顶面压应变容许值εz‑容许；S5、应用弹性层状体系理论确定结构计算层位弯拉应变计算值εt‑计算及土基压应变计算值εz‑计算；S6、以沥青混合料层底弯拉应变容许值εt‑容许＞计算值εt‑计算，土基顶部压应变容许值εz‑容许＞计算值εz‑计算为验算指标，进行结构验算。
Full-flexible asphalt pavement structure design method
一种全柔性沥青路面结构设计方法
YAO WANG (Autor:in) / MA SHIJIE (Autor:in) / YANG ZHENYU (Autor:in) / XU XIZHONG (Autor:in) / WANG XIAORAN (Autor:in) / WANG LIN (Autor:in) / ZHANG XIAOMENG (Autor:in) / YAN XIANGPENG (Autor:in) / SUN ZHAOYUN (Autor:in) / HU JIABO (Autor:in)
18.02.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E01C
Bau von Straßen, Sportplätzen oder dgl., Decken dafür
,
CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE
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