反射裂缝是加铺层结构设计考虑的重点。
Reflective cracking overlay structure is the focus of design considerations.
因此反射裂缝的研究一直是这种组合结构研究的重点和难点。
So it is important to research the reflection crack to this composite structure, and it is difficult too.
在此基础上，导出了预估反射裂缝形成寿命的简便方法与公式。
A practical method for predicting the reflective crack initiation life is developed, and the corresponding formula in the closed form is obtained.
反射裂缝导致面层开裂、剥落，路面水沿裂缝下渗，使路面发生损坏。
Reflective crack caused surface cracking, spalling, surface water infiltrating along the seam, so that the road was damaged.
目前，反射裂缝是旧水泥混凝土路面加铺沥青面层常见的的病害之一。
At present, the reflective cracking in the asphalt overlay paved on the existing cement concrete pavement is the common problem.
开展旧混凝土路面上加铺沥青面层防治反射裂缝的研究，是很有必要的。
Launch old concrete road surface is it spread pitch layer is it reflect research of crack to prevent and cure to add, it is very necessary.
采用何种防止反射裂缝的技术，应根据旧水泥混凝土路面的状况来选择。
Which measure to prevent reflecting cracks from happening is adopted rest with the condition of former concrete pavement.
从玻璃纤维格栅的基本性能出发，分析了玻璃纤维格栅防止反射裂缝的机理。
Based on the basic properties, the mechanism of fiberglas grille to prevent reflection crack is analyzed.
特点：高强度、模量，低延伸率、疲劳开裂，耐高温车辙，延缓减少反射裂缝。
Features: High strength, high modulus, low extensibility, good anti-fatigue and anti-tearing performance. resistant to high-temperature track, delaying and decreasing crack reflection.
为预防和延缓旧混凝土面层和沥青加铺层反射裂缝，国内外采用了各种修复措施。
Many prevention measures were adopted to prevent and stave the reflection cracking in the asphalt overlay on existing concrete pavements in the world.
本文在深入分析反射裂缝形成机理的基础上，提出了反射裂缝的预防及治理措施。
Based on in-depth analysis of reflective crack formation mechanism, this paper gives reflective crack preventive and curative measures.
反射裂缝是旧水泥砼路面上沥青罩面和半刚性路面的常见病害，对道路的危害极大。
The reflective cracking is one of the major damages of the asphalt overlay on old roads and semirigid pavement, which badly influence the performance of the pavement.
为了评价应力吸收防水粘结层(SAWI)的抗反射裂缝能力，对其进行了性能试验。
In order to evaluate the reflection crack resistance of stress-absorbing waterproof interlayer (SAWI), some performance tests were carried out.
水泥路面白改黑工程中沥青找平层起着提供沥青加铺层工作平台和防反射裂缝的作用。
Asphalt leveling course has effect on providing working platform for asphalt leveling course and preventing reflection cracks in the "adding ac overlay on PCC pavement" project.
沥青加铺层反射裂缝扩展过程要经历三个阶段：起裂阶段、稳定扩展阶段、破裂阶段。
The reflective crack go through three stages: the stage of crack arises, expand stage, break stage.
得出了含表面裂缝和反射裂缝路面体的应力强度因子均随着裂缝长度的增加逐渐增大。
It is obtained that the SIF increases with the length of the surface crack or the reflective crack enlarging in the asphalt pavement.
研究玻璃纤维格栅在防治与控制反射裂缝中的作用机理，对其施工工艺进行详细的介绍。
This paper also studies the principle respectively how glass fiber grid prevents and controls reflection crack, and introduces corresponsive construction crafts in detail.
采用脆性涂层法研究沥青路面的反射裂缝，并将试验结果与有限元计算结果进行了比较。
The method of brittle coat is used to study reflective crack of asphalt pavement, comparing the experimental results with that gotten by FEM.
介绍了旧水泥混凝土路面处理、防止反射裂缝措施、道路设计中纵断面设计和横坡确定。
Introduced hereby are the treatment of the old cement concrete pavement, measures to prevent reflective cracking and the profile design and transverse grade determination in road design.
笔者在介绍反射裂缝概念基础上，简要叙述了反射裂缝形成机理及扩展规律的几种理论。
The author introduces the conception of reflection crack, on this basis briefly narrates the mechanism of reflection crack forming and its extension law.
半刚性基层沥青路面作为过渡层时，可以有效改善半刚性基层收缩裂缝的反射裂缝的发生。
Unbound aggregate base can efficiently retard the reflexion of cracks to asphalt pavement surface, which is aroused by the shrinkage crack of semi-rigid base in the inverted structure.
反射裂缝裂尖位于面层中且裂缝长度大于某一值时，应力强度因子随着摩擦系数的增加而减小。
The SIF decreases with the friction coefficient rising when the surface crack tip lies in the base and the reflective crack length is more than a certain value.
在交通荷载的作用下，旧路面对沥青加铺层形成的反射裂缝是造成沥青路面病害的主要原因之一。
The reflection crack of the old road surface to the asphalt is one of the main reason for the road diseases under the traffic load.
通过力学计算设计的室内模型能较好地模拟荷载型反射裂缝和评价不同混合料的抗反射裂缝能力；
The model designed through finite element analysis can simulate the reflective cracking caused by load and evaluate the reflective cracking resistance of different asphalt mixtures.
这种基层具有较大的空隙率，能及时排走滞留在路面内部的水分，并能有效地减少反射裂缝的发生。
The base has bigger percent air voids and can promptly detain pavement interior water, and can effectively reduce the reflection crack.
在旧水泥混凝土路面上加铺沥青混凝土面层所面临的关键是如何有效的抑止或延缓反射裂缝的产生。
How to prevent and delay the emergence of the reflective cracks effectively is the key to the asphalt concrete overlay on the old cement concrete pavement.
因此继续开展旧水泥混凝土路面上加铺沥青面层防治反射裂缝设计方法的研究，是必要而且是可行的。
It was necessary and feasible to study the design to prevent reflecting cracks on the asphalt overlaid on the old cement concrete pavement.
反射裂缝是旧水泥混凝土路面沥青加铺路面的主要病害之一，直接影响了路面的使用功能和使用寿命。
Reflective crack is one of major damage that the old concrete pavement has after restored by adding asphalt overlay and affects directly function and service life of mad usage.
首先，对反射裂缝尖端应力场的奇异性进行了描述，建立了平面断裂问题应力强度因子的有限单元解。
Firstly, after depicting the singularity of stress field at the top of crack, the finite element method to calculate stress intensity factor of plain fracture problems is founded.
基于选定的路面力学模型，采用断裂力学中的疲劳裂缝扩展理论对路面反射裂缝的扩展规律进行分析。
Based on the pavement mechanics models, fatigue cracking theory of fracture mechanics was used to investigate the rule of reflection cracking.
应用推荐