Abstract
The use of diaphragm wall to protect the depth excavation is quite common in Viet Nam. Prediction of diaphragm wall deformations is required to choose the method of construction, and also for control of process of erection of an underground construction. Currently, there are many programs to calculate the deformation of the diaphragm wall, including software Plaxis. This paper considers the choice of a computational model for soils in the Hanoi - Viet Nam region of Mohr Coulomb (MC) and Hardening Soil (HS) and comparison of the calculation results with the measured data. Such investigations were conducted first.
Highlights
In larger cities of Viet Nam, such as Hanoi and Ho Chi Minh City, the volume of high-rise buildings with underground part is getting bigger
Struts of steel pipes have: ЕА=2.51x106 kN; spacing Ls=1m; For the using anchor method, anchors are arranged uniformly along the length of the diaphragm wall with an interval of 2m, the tensile strength EA = 2.0x105 kN; The anchor is modeled by geotextile element with a stiffness of 1.91x106 kN/m; The loadings of surrounding buildings are calculated as a pressure q=20 kN/m on the ground surface
From the results shown in table 3, it follows that the maximum horizontal displacements of diaphragm wall gives the calculation of the model undrained Mohr Coulomb (MC) A
Summary
In larger cities of Viet Nam, such as Hanoi and Ho Chi Minh City, the volume of high-rise buildings with underground part is getting bigger. The need for underground space is increasing. Construction of underground structures has a significant impact on the surrounding buildings. It is necessary to use computational methods to assess the impact of underground construction on neighboring buildings. The geological conditions of these areas and models for the calculation were studied [1,2,3,4,5,6,7,8,9]. The main soil models for geotechnical calculations are Mohr Coulomb, Hardening Soil
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