Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Semi-sand vacuum combined preloading construction method
The invention discloses a semi-sand vacuum combined preloading construction method, which is characterized in that an ultra-large-area foundation to be treated is divided into a plurality of construction subareas by arranging clay sealing walls, so that flow construction is favorably formed, and the construction period is shortened. The clay sealing wall around each subarea improves the sealing performance of the vacuum surcharge loading area, and smooth construction of vacuum pumping is guaranteed. The medium-coarse sand is backfilled in the containing ditch to replace a traditional sand cushion layer, the cost of a large amount of medium-coarse sand is reduced, meanwhile, water contained in the stratum is smoothly discharged through the containing ditch, the vacuum drainage effect is guaranteed, and effective consolidation of the stratum is facilitated. In the subsequent vacuumizing process, the mode of covering water on the film is adopted, the pumped underground water serves as a load, and therefore the water pumping speed is increased, the manufacturing cost is saved, and the construction period is shortened. The problem that when a foundation with a thick soft soil layer is treated, the manufacturing cost is high by adopting a sand vacuum combined preloading foundation treatment method is solved.
本发明公开了一种半砂真空联合堆载预压施工方法，将超大面积待处理地基通过设置黏土密封墙划分为若干施工分区，有利于形成流水施工，加速工期。每分区周围的黏土密封墙提高了真空堆载区域的密封性能，保证了真空抽压的顺利施工。通过设置容置沟内回填中粗砂取代传统的砂垫层，减少大量的中粗砂的成本，同时容置沟也使得地层含水顺利排出，保证了真空排水效果，有利于地层有效固结。后续在抽真空时采用膜上覆水的方式，将抽出来的地下水作为荷载从而加快了抽水速度，节省了造价，也缩短了工期。本发明解决了对存在较厚的软弱土层的地基处理时，采用有砂真空联合堆载预压的地基处理方法存在造价成本高的问题。
Semi-sand vacuum combined preloading construction method
The invention discloses a semi-sand vacuum combined preloading construction method, which is characterized in that an ultra-large-area foundation to be treated is divided into a plurality of construction subareas by arranging clay sealing walls, so that flow construction is favorably formed, and the construction period is shortened. The clay sealing wall around each subarea improves the sealing performance of the vacuum surcharge loading area, and smooth construction of vacuum pumping is guaranteed. The medium-coarse sand is backfilled in the containing ditch to replace a traditional sand cushion layer, the cost of a large amount of medium-coarse sand is reduced, meanwhile, water contained in the stratum is smoothly discharged through the containing ditch, the vacuum drainage effect is guaranteed, and effective consolidation of the stratum is facilitated. In the subsequent vacuumizing process, the mode of covering water on the film is adopted, the pumped underground water serves as a load, and therefore the water pumping speed is increased, the manufacturing cost is saved, and the construction period is shortened. The problem that when a foundation with a thick soft soil layer is treated, the manufacturing cost is high by adopting a sand vacuum combined preloading foundation treatment method is solved.
本发明公开了一种半砂真空联合堆载预压施工方法，将超大面积待处理地基通过设置黏土密封墙划分为若干施工分区，有利于形成流水施工，加速工期。每分区周围的黏土密封墙提高了真空堆载区域的密封性能，保证了真空抽压的顺利施工。通过设置容置沟内回填中粗砂取代传统的砂垫层，减少大量的中粗砂的成本，同时容置沟也使得地层含水顺利排出，保证了真空排水效果，有利于地层有效固结。后续在抽真空时采用膜上覆水的方式，将抽出来的地下水作为荷载从而加快了抽水速度，节省了造价，也缩短了工期。本发明解决了对存在较厚的软弱土层的地基处理时，采用有砂真空联合堆载预压的地基处理方法存在造价成本高的问题。
Semi-sand vacuum combined preloading construction method
半砂真空联合堆载预压施工方法
GAO JIANGJING (Autor:in) / XIE YUANXUN (Autor:in) / PENG JINBAO (Autor:in) / YE GUO (Autor:in) / LI WEI (Autor:in) / TENG MAORUI (Autor:in) / XIE ZHIDUN (Autor:in) / CHEN SHAOSHEN (Autor:in) / WU CHANGYONG (Autor:in) / LI SHENGZU (Autor:in)
22.08.2023
Patent
Elektronische Ressource
Chinesisch
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