Laboratory Tests for Subgrade Reaction Coefficient in Seismic Design of Underground Engineering Domain
Joint Authors
Xu, Kunpeng
Jing, Liping
Cheng, Xinjun
Liang, Haian
Bin, Jia
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-06-28
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
Subgrade reaction coefficient is commonly considered as the primary challenge in simplified seismic design of underground structures.
Carrying out test is the most reliable way to acquire this intrinsic soil property.
Owing to the limitations of experimental cost, time consumption, soil deformation mode, size effect, and confined condition, the existing testing methods cannot satisfy the requirements of high-precision subgrade reaction coefficient in seismic design process of underground structures.
Accordingly, the present study makes an attempt to provide new laboratory testing methods considering realistic seismic response of soil, based on shaking table test and quasistatic test.
Conventional shaking table test for sandy free-field was performed, with the results indicating that the equivalent normal subgrade reaction coefficients derived from the experimental hysteretic curves are reasonable and verifying the deformation mode under seismic excitation.
A novel multifunctional quasistatic pushover device was invented, which can simulate the most unfavorable deformation mode of soil during the earthquake.
In addition, the first successful application of an innovative quasistatic testing method in evaluating subgrade reaction coefficient was reported.
The findings of this study provide preliminary detailed insights into subgrade reaction coefficient evaluation which can benefit seismic design of underground structures.
American Psychological Association (APA)
Xu, Kunpeng& Jing, Liping& Cheng, Xinjun& Liang, Haian& Bin, Jia. 2020. Laboratory Tests for Subgrade Reaction Coefficient in Seismic Design of Underground Engineering Domain. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-14.
https://search.emarefa.net/detail/BIM-1122587
Modern Language Association (MLA)
Xu, Kunpeng…[et al.]. Laboratory Tests for Subgrade Reaction Coefficient in Seismic Design of Underground Engineering Domain. Advances in Civil Engineering No. 2020 (2020), pp.1-14.
https://search.emarefa.net/detail/BIM-1122587
American Medical Association (AMA)
Xu, Kunpeng& Jing, Liping& Cheng, Xinjun& Liang, Haian& Bin, Jia. Laboratory Tests for Subgrade Reaction Coefficient in Seismic Design of Underground Engineering Domain. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-14.
https://search.emarefa.net/detail/BIM-1122587
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1122587