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              瀝青混凝土攤鋪施工的標準要求

              來源:http://www.kecengkeh.net/ 日期:2024-02-23

              路面攤鋪質量的好壞直接影響到路面的整體質量,因此,這就成為我們監理瀝青砼路面施工過程中的。攤鋪作業質量除了與機械本身的性能有關外,還取決于攤鋪的連續性、穩定性、勻速性,以及供料的均衡程度等因素,所以這個階段出現的問題也較多,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)瀝青砼路面厚度不均勻總是客觀存在,會引起在同一松鋪系數下不同厚度所產生的不同壓實效果從而影響路面平整度。所以,除了提高對基層的平整度和高程控制之外,還應加強對下面層瀝青路面平整度及高程的監督,使之有所補償,一層一層向上嚴格控制,直上面層。

              (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.

              在非常情況下,為保證路面厚度,則采取適當調整高程,以確保路面結構層厚度。

              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)攤鋪機開鋪后會出現一段距離的雙向坡,這對路面平整度影響很大。通過反復驗證拱度和熨平板自重下垂和熨平板預熱溫度和攤鋪溫度的溫差大小有關。

              thumb_304_227_20230310112746693.jpg

              (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,我們要求在熨平板預熱時溫度不低于80°C,用水準儀找平,并確定熨平板下支墊板的厚度(支墊板的厚度=松鋪厚度+熨平板預熱拱度+基層的高層誤差,一般要求有五個支點)。特別是整幅攤鋪時,應在攤鋪前將拱度調整為同一坡度,并及時調整,特別是攤鋪停止前要檢查、調整好,以避免二次接縫時出現路幅偏高中低。

              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)攤鋪機螺旋撥料器和攤鋪行走速度不匹配,使攤鋪室中積料過多或過少,導致熨平板下混合料粗細離折,我們要求螺旋攤鋪室內混合料料堆的高度平齊于或略高于螺旋攤鋪器軸心線。特別使螺旋攤鋪器不出空轉現象。

              (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)攤鋪機的行走速度不均勻,使攤鋪速度不勻,瀝青路面表面形成波浪,嚴重影響平整度及壓實度。因此,我們要求其應保證3ˉ4米/ 分的速度行走,盡量避免停機。

              (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.

              萬一出現停機,應將攤鋪機熨平板鎖緊不使之下沉。停頓時間在氣溫10°C以上時不要超過10分鐘。停頓時間超過30分鐘或混合料低于100°C時,要按照冷接縫的方法重新接縫。攤鋪機前應保證少三車料待鋪,以盡量減少停機,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)在攤鋪機行走的穩定性上,經常出現下列幾種問題:

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

              a、攤鋪機履帶行駛線上因卸料而撤落的粒料未及時,造成攤鋪厚度出現突變。因此,在施工過程中,督促施工人員隨時巡視,以避免這種情況發生。

              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、運輸車倒車時撞擊攤鋪機,引起攤鋪機扭曲前進,使路面出現凸愣,我們要求在連續攤鋪機過程中,運料車應在攤鋪機前10ˉ30cm處停處,并掛空擋,依靠攤鋪機推動緩慢前進;

              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)在中上層的施工中,由于找平梁(拖杠)剛度大,撓度小,落地輪子和雪橇多,自身重量分配合理,行走穩定性好,因此,我們要求必須運用找平梁,這對提高路面平整度、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.

              本文由濟南瀝青混凝土友情奉獻.更多有關的知識請點擊:http://www.kecengkeh.net真誠的態度.為您提供為的服務.更多有關的知識我們將會陸續向大家奉獻.敬請期待

              This article is dedicated by Jinan Asphalt Concrete Friendship. For more related knowledge, please click: http://www.kecengkeh.net Sincere attitude. We will provide you with comprehensive services. We will gradually contribute more relevant knowledge to everyone. Stay tuned

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