Thông tin chung
  English
  Đề tài NC khoa học
  Bài báo, báo cáo khoa học
  Hướng dẫn Sau đại học
  Sách và giáo trình
  Các học phần và môn giảng dạy
  Giải thưởng khoa học, Phát minh, sáng chế
  Khen thưởng
  Thông tin khác
  Tài liệu tham khảo
  Hiệu chỉnh
 
Số người truy cập: 106,968,161

 Physical Model Test for Soft Soil With or Without Prefabricated Vertical Drain with Loading
Tác giả hoặc Nhóm tác giả: Do Huu Dao - Nguyen Thi Phuong Khue - Phan Khac Hai
Nơi đăng: Civil Engineering Journal, ISSN 2476-3055 (Q1); Số: Issue 8 of Volume 4, August 2018;Từ->đến trang: 1809-1823, DOI: 10.28991/cej-03091116;Năm: 2018
Lĩnh vực: Kỹ thuật; Loại: Bài báo khoa học; Thể loại: Quốc tế
TÓM TẮT
The paper builds a physical model of testing in the laboratory with the parametric tempered glass box 0.5x0.5.x1.2m (length x width x depth) containing saturated clay to study the settlement and consolidation when loading increased gradually over time. The research covers herein to present the monitoring of settlement and pore water pressure, settlement calculation, numerical simulation using PLAXIS software V8.2 based on the results of soil physical and mechanical tests before and after loading in case of having or not prefabricated vertical drain (PVD). In case of no PVD, the calculation and numerical simulation using the soil parameters before loading have the differential settlement from the monitoring data, approximately 3.86mm (10.45%), 0.41mm (1.11%) respectively. Meanwhile, the deviation in the case using data after loading is about 2.29mm (6.20%), 0.21mm (0.56%) respectively. In case of PVD, the calculation and numerical simulation with the testing result of before loading deviation from the settlement monitoring by subsidence meter is 2.91mm (7.88%), 44.42mm (120.28%), calculation and simulation with the testing result of after loading deviation is 0.80mm (2.17%), 1.26mm (3.41%). In the case of having PVD, the difference in calculation, subsidence observation, and numerical simulation between the mechanical properties before and after loading is significant, when using the mechanical data after loading then the results are quite close to the subsidence of observation and simulation rather than before loading.
ABSTRACT
The paper builds a physical model of testing in the laboratory with the parametric tempered glass box 0.5x0.5.x1.2m (length x width x depth) containing saturated clay to study the settlement and consolidation when loading increased gradually over time. The research covers herein to present the monitoring of settlement and pore water pressure, settlement calculation, numerical simulation using PLAXIS software V8.2 based on the results of soil physical and mechanical tests before and after loading in case of having or not prefabricated vertical drain (PVD). In case of no PVD, the calculation and numerical simulation using the soil parameters before loading have the differential settlement from the monitoring data, approximately 3.86mm (10.45%), 0.41mm (1.11%) respectively. Meanwhile, the deviation in the case using data after loading is about 2.29mm (6.20%), 0.21mm (0.56%) respectively. In case of PVD, the calculation and numerical simulation with the testing result of before loading deviation from the settlement monitoring by subsidence meter is 2.91mm (7.88%), 44.42mm (120.28%), calculation and simulation with the testing result of after loading deviation is 0.80mm (2.17%), 1.26mm (3.41%). In the case of having PVD, the difference in calculation, subsidence observation, and numerical simulation between the mechanical properties before and after loading is significant, when using the mechanical data after loading then the results are quite close to the subsidence of observation and simulation rather than before loading.
© Đại học Đà Nẵng
 
 
Địa chỉ: 41 Lê Duẩn Thành phố Đà Nẵng
Điện thoại: (84) 0236 3822 041 ; Email: dhdn@ac.udn.vn