?。?）原材料的準(zhǔn)備：泡沫瀝青就地冷再生施工前，應(yīng)結(jié)合配合比設(shè)計(jì)、市場(chǎng)情況等因素合理地確定原材料來(lái)源。特別是發(fā)泡用瀝青、水泥和新骨料的采購(gòu)，原材料必須與配合比設(shè)計(jì)時(shí)采用的材料一致，若更換產(chǎn)地或廠家，需要重新開(kāi)展配合比設(shè)計(jì)。原材料進(jìn)場(chǎng)前，應(yīng)檢查出廠檢測(cè)報(bào)告、合格證等相關(guān)資料，并同時(shí)按照要求開(kāi)展必要的抽樣檢查，待原材料檢查合格后，方可進(jìn)場(chǎng)。

　　(1) Preparation of raw materials: Before the construction of foam asphalt cold recycling in place, the source of raw materials should be reasonably determined in combination with mix design, market conditions and other factors. Especially for the procurement of asphalt, cement, and new aggregates for foaming, the raw materials must be consistent with the materials used in the mix design. If the origin or manufacturer is changed, a new mix design is required. Before the raw materials enter the site, a comprehensive inspection of relevant materials such as factory inspection reports and certificates of conformity should be conducted, and necessary sampling inspections should be carried out according to requirements. Only after the raw materials pass the inspection can they enter the site.

　?。?）原公路線形、路基寬度分析：W380CR 就地冷再生機(jī)工作寬度為 3.8 m，實(shí)際實(shí)施過(guò)程中，再生寬度多大于 3.8 m，此時(shí)，施工前就需要對(duì)原路面進(jìn)行測(cè)量，掌握原有公路路面寬度情況，特別是對(duì)于二、三級(jí)公路，需考慮彎道加寬的情況。當(dāng)一次再生寬度超過(guò) 3.8 m 時(shí)，應(yīng)配備一臺(tái)與總再生寬度相匹配的銑刨機(jī)，負(fù)責(zé)把超寬部分進(jìn)行銑刨并把銑刨材料輸送再生機(jī)的再生寬度范圍之內(nèi)，以便再生機(jī)能夠把所有材料進(jìn)行再生。當(dāng)用于山區(qū)公路時(shí)，還應(yīng)對(duì)山區(qū)公路平縱面線形進(jìn)行評(píng)價(jià)，分析出合理的施工方案。特別是存在連續(xù)長(zhǎng)下坡路段時(shí)，為更好地控制冷再生機(jī)前進(jìn)速度，就地冷再生作業(yè)方式建議采用自下而上地作業(yè)的方式為主。以該工程為例，施工路段為連續(xù)下坡路段，平曲線半徑為 60 m，平曲線占路線總長(zhǎng)90%，縱坡 7%，右幅全為下坡路段，左幅為上坡路段，分析認(rèn)為連續(xù)長(zhǎng)下坡路段，對(duì)連續(xù)作業(yè)施工工藝要求更高，難以保證施工質(zhì)量，終采用先施工左幅路段后，再周轉(zhuǎn)設(shè)備起點(diǎn)，施工右幅段落，保證施工作業(yè)面為上坡作業(yè)的方式。

　　(2) Analysis of the original road alignment and subgrade width: the working width of the W380CR on-site cold recycling machine is 3.8 m, and in the actual implementation process, the recycling width is more than 3.8 m. At this time, the original pavement needs to be measured before construction to master the width of the original road pavement, especially for Class II and third-class highway, the widening of the curve needs to be considered. When the width of a regeneration exceeds 3.8 m, a milling machine that matches the total regeneration width should be equipped to mill the excess width and transport the milling material to the regeneration width range of the regeneration machine, so that the regeneration machine can regenerate all materials. When used for mountainous roads, the horizontal and vertical alignment of mountainous roads should also be evaluated to analyze a reasonable construction plan. Especially when there are continuous long downhill sections, in order to better control the forward speed of the cold regeneration machine, it is recommended to adopt a bottom-up approach for on-site cold regeneration operations. Taking this project as an example, the construction section is a continuous downhill section with a horizontal curve radius of 60 meters. The horizontal curve accounts for 90% of the total length of the route, and the maximum longitudinal slope is 7%. The right section is all downhill section, and the left section is uphill section. Analysis shows that the continuous long downhill section requires higher construction technology for continuous operation, making it difficult to ensure construction quality. Finally, the method of first constructing the left section, then turning over equipment to the starting point, and constructing the right section is adopted to ensure that the construction work surface is uphill.

　　（3）原路面的檢測(cè)和調(diào)查：正式開(kāi)工前，對(duì)原路面的檢測(cè)和處理是十分必要的。對(duì)于泡沫瀝青就地冷再生而言，再生前原路面需要有良好的整體狀況，路基沒(méi)有沉降，路面具有較好的承載能力。開(kāi)工前，應(yīng)對(duì)全線進(jìn)行路面結(jié)構(gòu)承載能力檢測(cè)和路況調(diào)查，待病害處治合格后方可實(shí)施。

　　(3) Inspection and investigation of the original road surface: Prior to the official commencement of construction, it is essential to inspect and treat the original road surface. For foam asphalt cold recycling in place, the original pavement needs to be in good overall condition before recycling, the subgrade has no settlement, and the pavement has good bearing capacity. Before starting construction, the bearing capacity of the road surface structure and road condition investigation should be carried out for the entire line. It can only be implemented after the disease is treated and qualified.

　?。?）合理的保通方案：同步攤鋪的連續(xù)作業(yè)方式需要一個(gè)良好的施工環(huán)境，減少施工干擾，保證順利實(shí)施。在施工過(guò)程中，合理的保通方案是十分關(guān)鍵的。對(duì)于高等級(jí)公路而言，可采用半幅實(shí)施的方式。對(duì)于普通國(guó)省道公路而言，該類公路路面寬度窄，平縱線形指標(biāo)較差，難以做到半幅施工，故施工過(guò)程中應(yīng)采用合理的保通方案，建議以路網(wǎng)保通或區(qū)間保通為主。施工前期，應(yīng)通過(guò)媒體等發(fā)布通告，建議途經(jīng)此段的車輛盡量考慮其他通過(guò)方案，并提供較詳盡路線長(zhǎng)度，路況及相關(guān)的信息。同時(shí)，應(yīng)設(shè)置完善的警示標(biāo)志牌，并配備值班人員，指揮交通。

　　(4) Reasonable traffic protection plan: The continuous operation mode of synchronous paving requires a good construction environment to reduce construction interference and ensure smooth implementation. A reasonable traffic protection plan is crucial during the construction process. For high-grade highways, a half width implementation method can be adopted. For ordinary national and provincial highways, the road surface width is narrow and the horizontal and vertical alignment indicators are poor, making it difficult to achieve half width construction. Therefore, a reasonable traffic protection plan should be adopted during the construction process, and it is recommended to focus on road network or section traffic protection. In the early stage of construction, notices should be released through media and other means, suggesting that vehicles passing through this section consider other options as much as possible, and provide detailed route length, road conditions, and related information. At the same time, complete safety warning signs should be set up, and duty personnel should be equipped to direct traffic.

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