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泰和污水處理廠TH1.2標項目底板澆筑順利完成

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泰和污水處理廠TH1.2標項目底板澆筑順利完成

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由機施集團承建的泰和污水處理廠工程TH1.2標底板結構歷時140天全部順利澆筑完成。

本工程體量巨大,基坑面積約12.2萬平方米,開挖深度為14.3米和17.5米,土方量約196萬立方米。地下室底板面積約12.2萬平方米,分為深坑區和淺坑區,其中深坑區面積為53450平方米,底板厚度為1.6米;淺坑區面積為68750平方米,底板厚度為1.4米。混凝土澆筑總方量約為18萬立方米。

在大底板澆筑過程中,最大一次澆筑混凝土量約18560立方米。由于大體積混凝土硬化期間水泥水化熱產生的溫度變化和混凝土收縮共同作用,由此產生的溫度應力和收縮應力是導致底板產生裂縫的根本原因。因此對于大體積混凝土除了須滿足強度、剛度、整體性和耐久性等要求外,如何控制溫度變形引起的裂縫開展是至關重要的。對此我們項目經過多次研討,最終制定通過大體積混凝土澆搗、大體積混凝土控溫及養護、結構平整度控制措施等幾個方面進行有效的質量管理和控制,確保底板結構坡度及平整度。

至此,泰和污水處理廠TH1.2標項目已進行到洞口大面積中板及頂板封閉階段,中板及頂板已分別完成近80%,1號工作井對接結構完成,預計年底聯絡通道北段完成,2.7米管道全部完成。在春節前最后幾天里,項目部每一位成員堅守崗位,穩扎穩打,確保做好安全生產工作,穩固推進泰和工程建設。

 

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