Optimization of diameter to thickness ratio of glass fiber reinforced plastics mortar pipe for highway(PDF)
长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]
- Issue:
- 2018年03期
- Page:
- 10-17
- Research Field:
- 道路工程
- Publishing date:
Info
- Title:
- Optimization of diameter to thickness ratio of glass fiber reinforced plastics mortar pipe for highway
- Author(s):
- WANG Qingzhou; LIANG Xiao; WEI Lianyu; WANG Yang
- Keywords:
- -
- PACS:
- -
- DOI:
- -
- Abstract:
- In order to solve the problem of lacking the standard and basis for designing the wall thickness of glass fiber reinforced plastics mortar pipe for highway, the basic mechanical parameters of different pipe thickness were obtained through the compressive property test, tensile property test of pipe. Combined with inservice static load test of glass fiber reinforced plastics mortar pipe, the stress of pavement base and the deformation of pipe under the action of vehicle load were obtained. The numerical analysis model of glass fiber reinforced plastics mortar pipe under automotive load were established by ABAQUS software, the splitting strength value of the pavement base material and the maximum permissible deformation of the pipe were used as the control index, the optimal values of the ratio of pipe under nine different working conditions, including the inner diameter of pipe and the depth of buried pipe were studied. The results show that the optimal diameter to thickness ratio of pipe is related to the inner diameter of pipe and the soil depth of pipe. When the inner diameter of pipe is 1.0 m, the soil depth of buried pipe is 1, 1.5 and 2 m, the optimal wall thickness of pipe is20 to 25, 25 to 30 and 32 to 37 mm, and the optimum diameter to thickness ratio of pipe is 40 to 50, 33 to 40 and 27 to 31 respectively. When the inner diameter of pipe is 1.5 m, the soil depth of buried pipe is 1, 1.5 and 2 m, the optimal wall thickness of pipe is 28 to 33, 32 to 37 and 35 to 40 mm, and the optimum diameter to thickness ratio of pipe is 45 to 53, 40 to 46 and 37 to 42 respectively. When the inner diameter of pipe is 2.0 m, the soil depth of buried pipe is 1.5 or 2 m, the optimal wall thickness of pipe is 35 to 40 or 40 to 45 mm, and the optimum diameter to thickness ratio of pipe is 50 to 57 or 37 to 44. Under the premise of ensuring the overall structure of the load and the structural safety of the pipe itself, the most economical wall thickness can be selected according to the diameter of the pipe and the soil depth of the buried pipe, thereby saving the raw material cost of the pipe and reducing the cost of the culvert engineering of the glass fiber reinforced plastics mortar pipe. 6 tabs, 14 figs, 25 refs.
Last Update: 2018-06-12