Abstract
In the embankment widening project, the new embankment will produce large deformation due to the low degree of consolidation, which will affect the stability of the embankment. Obtaining the settlement law of embankment is the premise to ensure the stability of the embankment. In this paper, the deformation law of the new embankment is studied through the embankment model test, and the settlement calculation method of the new embankment is proposed. The model test results show that the new and old embankments have a large settlement difference during the loading process, and the maximum settlement of the new embankment is twice that of the old embankment. The lateral deformation of the new embankment is directly proportional to the vertical deformation, sliding occurs under the ultimate load, and the bearing capacity is lost. Based on the one-dimensional calculation method, the lateral deformation coefficient is introduced, and the two-dimensional embankment settlement formula is obtained. The new embankment is meshed, and the deformation of each node is calculated by the formula, and the difference between the settlement and the model test data is 6.2%, which proves the feasibility and accuracy of the calculation method.
Highlights
In the highway expansion project, the degree of consolidation of the new embankment is relatively low (Sun et al 2011; Liu et al 2015), the highway embankment will produce vertical deformation and lateral deformation under the action of pavement load, as a consequence, traffic safety will be affected and maintenance costs will increase (Sun et al 2011; Liu et al 2015)
The deformation law of the new embankment is studied through the embankment model test, and the settlement calculation method of the new embankment is proposed
The conclusion is as follows: (1) The embankment test scheme designed in this paper can accurately perform the new and old embankment model tests, and the test data conform to actual engineering laws, which is a valuable reference for relevant research
Summary
In the highway expansion project, the degree of consolidation of the new embankment is relatively low (Sun et al 2011; Liu et al 2015), the highway embankment will produce vertical deformation and lateral deformation under the action of pavement load, as a consequence, traffic safety will be affected and maintenance costs will increase (Sun et al 2011; Liu et al 2015). The deformation law of the new embankment and the relationship between the settlement and lateral deformation is obtained. On this basis, the lateral deformation parameters are introduced and the one-dimensional calculation method is combined to derive the two-dimensional settlement calculation formula of the new embankment, which improves the accuracy of embankment settlement calculation. The lateral deformation parameters are introduced and the one-dimensional calculation method is combined to derive the two-dimensional settlement calculation formula of the new embankment, which improves the accuracy of embankment settlement calculation It provides a reference for the design and construction of the highway embankment expansion project
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