土方開挖工程施工工藝標(biāo)準(zhǔn)-閱讀頁
2025-01-30 02:22本頁面
【正文】 規(guī)定：灰土施工時嚴(yán)格執(zhí)行留接槎的規(guī)定。接槎的槎子應(yīng)垂直切齊。務(wù)必認(rèn)真對待熟石灰的過篩要求。應(yīng)認(rèn)真做好計量工作。認(rèn)真檢查灰土表面的標(biāo)高及平整度。否則應(yīng)編好分項雨季、冬期施工方案；施工時嚴(yán)格執(zhí)行施工方案中的技術(shù)措施，防止造成灰土水泡、凍脹等質(zhì)量返工事故。 材料準(zhǔn)備 砂：宜用顆粒級配良好、質(zhì)地堅硬的中砂或粗砂，當(dāng)用細(xì)砂、粉砂時，應(yīng)摻入粒徑20～50mm卵石（或碎石），但要分布均勻。 碎石：要求質(zhì)地堅硬、密致、未風(fēng)化；碎石粒徑一般為5～40mm，吸水率不大于5%，含泥量小于5%。 主要工具：鐵锨、鐵耙、鐵篩、手推車等。 基坑（槽）已經(jīng)過相關(guān)部門驗收，控制鋪填厚度的水平木樁或標(biāo)高樁以設(shè)置好。 墊層底面標(biāo)高不同時，土面應(yīng)挖成階梯或斜坡搭接，并按先深后淺的順序施工，搭接處應(yīng)夯壓密實。見圖1021所示。 墊層鋪設(shè)時，嚴(yán)禁擾動墊層下臥層及側(cè)壁的軟弱土層，防止被踐踏、受凍或受浸泡而降低其強(qiáng)度。先在軟弱土面上堆填塊石、片石等，然后將其壓入以置換和擠出軟弱土，再作墊層。每層鋪設(shè)厚度、砂石最佳含水量控制及施工機(jī)具、方法的選用參見下表。夯實、碾壓遍數(shù)、振實時間應(yīng)通過試驗確定。大面積施工可采用成組噴霧淋水器均勻噴水使砂層達(dá)到飽和狀態(tài)，然后用成組電動插入式振搗器按順序排列進(jìn)行振動搗固使其密實，見圖1022，最后由地下暗溝將密實砂層中多余的水排出?；虿扇〗档偷叵滤淮胧?，使地下水位降低到基坑底500mm以下。墊層接頭應(yīng)重復(fù)振搗，插入式振動棒振完所留孔洞應(yīng)用砂填實，在振動首層墊層時，不得將振動棒插入原土層或基槽邊坡，以避免軟土混入砂墊層而降低砂墊層的強(qiáng)度。 質(zhì)量標(biāo)準(zhǔn) 質(zhì)量檢驗：砂墊層每層夯（振）實后，經(jīng)貫入測試或環(huán)刀法取樣檢測密實度應(yīng)達(dá)到中密標(biāo)準(zhǔn)，～。如為砂石墊層，則在其中設(shè)純砂檢驗點(diǎn)，在同樣條件下用環(huán)刀法取樣，檢測點(diǎn)數(shù)量：對大型基坑，抽查每50～100m2，應(yīng)不小于1個；對基槽、溝，每10～20m，應(yīng)不少于1個，每個單獨(dú)柱基應(yīng)不小于1個。砂墊層和砂石墊層鋪設(shè)厚度及施工最優(yōu)含水量。2烘干法5分層厚度偏差（與設(shè)計要求比較）（mm）(mm)177。 墊層鋪設(shè)完畢，應(yīng)立即進(jìn)行下道工序。 施工中應(yīng)保護(hù)邊坡穩(wěn)定，防止塌方。 施工期間，做好墊層周圍排水設(shè)施。操作夯機(jī)人員，必須戴膠皮手套，以防觸電。 其他同“灰土地基”章節(jié) 注意事項 墊層底面標(biāo)高不同時，應(yīng)作成階梯形或斜坡搭接，并按先深后淺的順序施工，搭接處應(yīng)夯壓密實。 墊層鋪設(shè)時，嚴(yán)禁擾動墊層下臥層及側(cè)壁的軟弱土層。 質(zhì)量記錄本工藝標(biāo)準(zhǔn)應(yīng)具備以下質(zhì)量記錄： 砂和砂石地基基工程檢驗批質(zhì)量驗收記錄表； 砂（石）密實度試驗報告； 砂（石）地基施工記錄。In an adorable video showing his first trip to the beach, Duncan Lou Who can been seen excitedly galloping along the sand and paddling in the Lou Who的狗第一次來到海邊的場景，他興奮地在沙灘上飛奔、或是趟水嬉戲。Despite only having front limbs, the boxer is able to not only balance, but also run really fast and play with the other dogs that joined him for the ，Duncan不僅能讓自己保持平衡，還能快速奔跑，和其余同他一起遠(yuǎn)足的狗 狗玩耍。His owners, who posted the video on YouTube, said he has a wheelchair but doesn39。39。 his owners said. “我們讓他自由地用兩條腿行走。”主人們說。Duncan39。trooper39。s Facebook page: 39。s happy, healthy and as far as he knows, normal too.39?！?9。t built to have back legs and that39。 “他如果能有四條腿當(dāng)然最好，但是他天生就失去了后肢，這也沒什么關(guān)系，無論是他還是我們都已經(jīng)適應(yīng)了這一點(diǎn)。m thankful to PSG for giving me the opportunity to continue but I feel now is the right time to finish my career, playing at the highest level. If you had told me as a young boy I would have played for and won trophies with my boyhood club Manchester United, proudly captained and played for my country over one hundred times and lined up for some of the biggest clubs in the world, I would have told you it was a fantasy. I39。t have achieved what I have done today without my family. I39。 sacrifice, which made me realise my dreams. I owe everything to Victoria and the kids, who have given me the inspiration and support to play at the highest level for such a long period. I also want to thank Simon Fuller and his team for their continued support. I want to thank all my teammates, the great managers that I had the pleasure of learning from. I also want to thank the fans who have all supported me and given me the strength to succeed. Nothing will ever pletely replace playing the game I love, however I feel like I39。m genuinely excited about what lies ahead. I39。s my time to give back.22
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