| Issue |
E3S Web Conf.
Volume 165, 2020
2020 2nd International Conference on Civil Architecture and Energy Science (CAES 2020)
|
|
|---|---|---|
| Article Number | 03028 | |
| Number of page(s) | 5 | |
| Section | Geology, Mapping, and Remote Sensing | |
| DOI | https://doi.org/10.1051/e3sconf/202016503028 | |
| Published online | 01 May 2020 | |
Artificial Frozen Soil Bending Test and Bending Property
1 Shenzhen Yuetong Construction Engineering Co., Ltd, 518019 Ltd. Shenzhen, China
2 Shenzhen Tagen Engineering Technology Co., Ltd, 518034 Shenzhen, China
3 Shenzhen Tagen <Group> Co., Ltd, 518034 Shenzhen, China
* Corresponding author: 315778102@qq.com
Artificial freezing ground method has been widely used in tunnels, metro and other projects, in the connecting passage in metro, the artificial frozen soil wall, which is formed by artificial freezing method, is often used as temporary support. The artificial frozen soil wall is in the joint action of pressure and bending moment, for it takes the upper pressure and lateral earth pressure at same time, so there may be tensile stress in the profile, which may cause brittle failure. At present, some scholars have carried out researches on the tensile strength with different test methods, but they are insufficiency and have a certain difference in stress state between the specimen and the actual support structure. A bending test instrument was designed and manufacture, which satisfies the code’s requirements, and reduces the error caused by poor contact between the specimen and loading device. Bending test on artificially frozen soils was launched using this instrument, and the test on influence law of moisture content and freezing temperature on artificially frozen soils’ strength was also launched. The conclusions can provide a reference for design and construction.
© The Authors, published by EDP Sciences, 2020
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