Behaviors of SRTP Buried Pipeline Under the Action of Ground Fissure(PDF)
《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]
- Issue:
- 2019年第01期
- Page:
- 107-115
- Research Field:
- 工程地质
- Publishing date:
Info
- Title:
- Behaviors of SRTP Buried Pipeline Under the Action of Ground Fissure
- Author(s):
- HUANG Qiang-bing; JIANG Zi-kan; GUO Rui; LIANG Ao
- 1. School of Geology Engineering and Geomatics, Chang’an University, Xi’an 710054, Shaanxi, China; 2. China Railway Southwest Research Institute Co., Ltd., Chengdu 611731, Sichuan, China; 3. CCCC-SHEC Third Highway Engineering Co., Ltd., Xi’an 710016, Shaanxi, China
- Keywords:
- pipeline engineering; ground fissure; SRTP buried pipeline; model test; numerical simulation; force; deformation characteristic
- PACS:
- P642.4;TU93+1
- DOI:
- -
- Abstract:
- Taking SRTP buried pipeline obliquely crossing the ground fissure belt (30°) in Xi’an of Shaanxi as engineering background, the deformation and stress characteristics of buried pipeline under the settlement action of ground fissure were studied based on the full-scale model test and numerical simulation calculation. The results show that the settlement displacement of SRTP buried pipeline under the settlement action of ground fissure is much less than or lags behind stratum deformation, and this phenomenon has an obvious characteristic of “attenuation effect”; the force deformation mode of SRTP buried pipeline under the settlement action of ground fissure is tension-compression bending, namely, the top of pipeline is in compression at the hanging wall and in tension at the footwall, and the bottom of pipeline is in tension at the hanging wall and in compression at the footwall, indicating an antisymmetric phenomenon and a good performance to adapt to the deformation of ground fissure; the influence scope of SRTP buried pipeline under the settlement action of ground fissure is about 3.0 m, namely, 1.2 m at the footwall and 1.8 m at the hanging wall, so the protective measures of pipeline should be taken in this influence scope; the pipeline under the settlement action of ground fissure can be divided into three sections, including settlement section in the hanging wall, gap section and warping section in the footwall, and the scope of gap section is about 1.2 m.
Last Update: 2019-01-25