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  <controlfield tag="008">210402s9999    xx            000 0 und d</controlfield>
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   <subfield code="a">Nghiên cứu ứng dụng công thức tính hệ số nhóm của nhóm cọc trong đất ở Đồng bằng sông Cửu Long :</subfield>
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   <subfield code="b">Luận văn tốt nghiệp cao học ngành. Kỹ thuật Xây dựng Công trình thủy</subfield>
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   <subfield code="a">Sự làm việc của một cọc đơn và một cọc trong nhóm cọc khác nhau rất nhiều. Trong các phương pháp tính toán móng cọc hiện nay đều coi sức chịu tải của cọc trong nhóm cọc như sức chịu tải của cọc đơn, như vậy độ chính xác chưa cao, do vậy đây là vấn đề cần nghiên cứu hoàn chỉnh để đưa vào tính toán và đặc biệt cần chú ý đối với cọc ma sát ở đây ta nghiên cứu một số vấn đề tương tác giữa các cọc trong nhóm cọc gọi là hệ số nhóm.</subfield>
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