路面摊铺质量的好坏直接影响到路面的整体质量，因此，这就成为我们监理沥青砼路面施工过程中的。摊铺作业质量除了与机械本身的性能有关外，还取决于摊铺的连续性、稳定性、匀速性，以及供料的均衡程度等因素，所以这个阶段出现的问题也较多，如：

The quality of road paving directly affects the overall quality of the road surface, therefore, this has become the focus of our supervision of asphalt concrete pavement construction process. The quality of paving operation is not only related to the performance of the machinery itself, but also depends on factors such as the continuity, stability, uniformity of paving, and the balance of feeding. Therefore, there are also many problems that occur at this stage, such as:

（1）沥青砼路面厚度不均匀总是客观存在，会引起在同一松铺系数下不同厚度所产生的不同压实效果从而影响路面平整度。所以，除了提高对基层的平整度和高程控制之外，还应加强对下面层沥青路面平整度及高程的监督，使之有所补偿，一层一层向上严格控制，直上面层。

(1) Uneven thickness of asphalt concrete pavement always objectively exists, which can cause different compaction effects of different thicknesses under the same coefficient of loose paving, thereby affecting the smoothness of the pavement. So, in addition to improving the smoothness and elevation control of the base layer, it is also necessary to strengthen the supervision of the smoothness and elevation of the lower layer of asphalt pavement, so that it can be compensated, and strictly control layer by layer until the upper layer.

在非常情况下，为保证路面厚度，则采取适当调整高程，以确保路面结构层厚度。

In exceptional circumstances, to ensure the thickness of the road surface, appropriate adjustments to the elevation are taken to ensure the thickness of the pavement structural layer.

（2）摊铺机开铺后会出现一段距离的双向坡，这对路面平整度影响很大。通过反复验证拱度和熨平板自重下垂和熨平板预热温度和摊铺温度的温差大小有关。

(2) After the paver starts paving, there will be a two-way slope at a certain distance, which has a significant impact on the smoothness of the road surface. The temperature difference between the arch and the weight sag of the ironing plate, as well as the preheating temperature and paving temperature of the ironing plate, has been repeatedly verified.

所以，我们要求在熨平板预热时温度不低于80°C，用水准仪找平，并确定熨平板下支垫板的厚度（支垫板的厚度=松铺厚度+熨平板预热拱度+基层的高层误差，一般要求有五个支点）。特别是整幅摊铺时，应在摊铺前将拱度调整为同一坡度，并及时调整，特别是摊铺停止前要检查、调整好，以避免二次接缝时出现路幅偏高中低。

So, we require that the temperature during the preheating of the ironing plate should not be lower than 80 ° C, level it with a spirit level, and determine the thickness of the support plate under the ironing plate (thickness of the support plate=loose laying thickness+preheating curvature of the ironing plate+high-level error of the base layer, generally requiring five support points). Especially during the entire paving process, the arch should be adjusted to the same slope before paving and adjusted in a timely manner. Especially before paving stops, it should be checked and adjusted to avoid the road width being too high or too low during secondary joints.

（3）摊铺机螺旋拨料器和摊铺行走速度不匹配，使摊铺室中积料过多或过少，导致熨平板下混合料粗细离折，我们要求螺旋摊铺室内混合料料堆的高度平齐于或略高于螺旋摊铺器轴心线。特别使螺旋摊铺器不出空转现象。

(3) The mismatch between the spiral feeder of the paver and the walking speed of the paver results in excessive or insufficient accumulation of material in the paving chamber, leading to the separation of the thickness of the mixture under the ironing plate. We require that the height of the mixture pile in the spiral paver chamber be level with or slightly higher than the axis of the spiral paver. Especially to prevent the spiral paver from idling.

（4）摊铺机的行走速度不均匀，使摊铺速度不匀，沥青路面表面形成波浪，严重影响平整度及压实度。因此，我们要求其应保证3ˉ4米/ 分的速度行走，尽量避免停机。

(4) The uneven walking speed of the paver results in uneven paving speed, causing waves to form on the surface of the asphalt pavement, seriously affecting smoothness and compaction. Therefore, we require it to ensure that 3 ˉ Walk at a speed of 4 meters per minute and try to avoid stopping the machine.

万一出现停机，应将摊铺机熨平板锁紧不使之下沉。停顿时间在气温10°C以上时不要超过10分钟。停顿时间超过30分钟或混合料低于100°C时，要按照冷接缝的方法重新接缝。摊铺机前应保证少三车料待铺，以尽量减少停机，避免形成波浪。

In case of shutdown, the paver's ironing plate should be locked tightly to prevent it from sinking. The pause time should not exceed 10 minutes when the temperature is above 10 ° C. When the pause time exceeds 30 minutes or the mixture is below 100 ° C, the cold joint method should be used to re joint. Before the paver, it is necessary to ensure that at least three carts of materials are left to be laid, in order to minimize downtime and avoid the formation of waves.

（5）在摊铺机行走的稳定性上，经常出现下列几种问题：

(5) In terms of the stability of the walking of the paver, the following problems often occur:

a、摊铺机履带行驶线上因卸料而撤落的粒料未及时，造成摊铺厚度出现突变。因此，在施工过程中，督促施工人员随时巡视，以避免这种情况发生。

a. The granular material that fell off the track of the paver due to unloading was not removed in a timely manner, resulting in a sudden change in the paving thickness. Therefore, during the construction process, it is necessary to supervise the construction personnel to conduct inspections at all times to avoid such situations.

b、运输车倒车时撞击摊铺机，引起摊铺机扭曲前进，使路面出现凸愣，我们要求在连续摊铺机过程中，运料车应在摊铺机前10ˉ30cm处停处，并挂空挡，依靠摊铺机推动缓慢前进；

b. When the transport vehicle is reversing, it collides with the paver, causing the paver to twist and move forward, resulting in a bumpy road surface. We require that during the continuous paver process, the transport vehicle should be 10 times in front of the paver ˉ Stop at 30cm and shift to neutral, relying on the paver to push slowly forward;

（6）在中上层的施工中，由于找平梁（拖杠）刚度大，挠度小，落地轮子和雪橇多，自身重量分配合理，行走稳定性好，因此，我们要求必须运用找平梁，这对提高路面平整度、厚度起到了很好的效果。

(6) In the construction of the middle and upper layers, due to the high stiffness and small deflection of the leveling beam (drag bar), as well as the large number of wheels and sleds on the ground, reasonable weight distribution, and good walking stability, we require the use of leveling beams, which has a good effect on improving the smoothness and thickness of the road surface.

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