Tối ưu hóa chiều dài của cọc bằng phương pháp truyền tải trọng=Pile length optimization by load-transfer method

0 Người đánh giá. Xếp hạng trung bình 0

Tác giả: Tổng Nguyễn

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Xây dựng, 2024

Mô tả vật lý: tr.134

Bộ sưu tập: Metadata

ID: 478704

Thêm vào giỏ

Reasonable selection of the design capacity value of the pile is very important in optimizing construction costs. However, this is an extremely complex job, requiring in-depth understanding in loadtransfer mechanism of pile. By using the load-transfer method of Nanda and Patra (2014), the article conducted a back analysis of the results of a pile load test with strain guages for a 83.3 m long pile to clarify this mechanism. Apply the results obtained from the analysis on another pile with a length of 73.3m to investigate variations in the load-transfer mechanism when the pile length changes. Based on that understanding, the article provides important recommendations in choosing a reasonable pile length to achieve economic efficiency. This is a practical method, both indepth and simple enough, so that engineers have a good enough tool to be more confident in their design work. Keywords: Pile length optimization
load-transfer method
loadtransfer mechanism of pile
tangent modulus method
incremental rigidity method.Việc chọn lựa hợp lý giá trị sức chịu tải thiết kế của cọc là rất quan trọng trong việc tối ưu hóa chi phí xây dựng. Tuy vậy, đây là một công việc vô cùng phức tạp, đòi hỏi phải có hiểu biết chuyên sâu về cơ chế huy động sức chịu tải của cọc. Bằng cách sử dụng phương pháp truyền tải trọng của Nanda và Patra (2014), bài báo tiến hành phân tích ngược kết quả thí nghiệm nén tĩnh có kết hợp đo biến dạng dọc thân cọc cho cọc dài 83.3m nhằm làm rõ cơ chế này. Áp dụng kết quả thu được từ phân tích trên cho một cọc khác có chiều dài 73.3m nhằm khảo sát mức độ thay đổi cơ chế huy động sức kháng của nền đất khi chiều dài cọc thay đổi. Dựa trên nền tảng hiểu biết đó, bài báo cung cấp các đề xuất trong việc lựa chọn chiều dài cọc hợp lý nhằm đạt được tính hiệu quả kinh tế. Đây là một cách thức mang tính thực hành, vừa chuyên sâu nhưng cũng đủ đơn giản, để các kỹ sư có một công cụ đủ tốt nhằm tự tin hơn trong công tác thiết kế. Từ khóa: Tối ưu hóa chiều dài cọc
phương pháp truyền tải trọng
cơ chế truyền tải cọc
phương pháp mô đun tiếp tuyến
phương pháp gia số độ cứng.

1. Đọc trực tuyến

1. Đọc trực tuyến

Tạo bộ sưu tập với mã QR