|
|
|
| Model Test Research on the Working Performance of Double - row Anti - slide Pile |
| WU Hong - gang, ZHANG Qian - yi, ZHOU Zhang - bo, ZHANG Jun - de, SONG Xiang -jun |
| (Northwest Research Institute Co. Ltd. of CREC , Lanzhou, Gansu 730000, China) |
|
|
|
Abstract Research purposes ： As the accelerating pace of construction in domestic highway, railway and civil aviation, there are many engineering landslides with a huge thrust. Double - row anti - slide pile has been widely used as the effective measures of the large - scale landslide governance, however, the working performance of double - row anti - slide pile , such as bearing capacity and deformation failure pattern, was in the situation of lack adequate understanding. On the basis of the prototype of accumulation landslide governance with double - row anti - slide piles, the ultimate bearing capacity and deformation and failure process were studied through geomechanical model test.
Research conclusions: (1) The test plan for the three stages of destructive test was made firstly. The piles in front and
back row have different degree of fracture damage in each scheduled trial stage, and the damage pattern is given priority to tensile and bending failure. (2) The three stages characteristic of displacement curve is obvious such as the development of slow , fast , and acceleration in the first and third process of test. The linear trend curve is presented in the second test stage. (3) Soil pressure distribution along the pile is in line with the current calculation assumption. As a result of the existence of friction of soil between piles, the thrust distribution of front and back row piles is quite uneven, and the back row pile plays the key role in the aspect of thrust bearing. The change stages of soil pressure
contain three parts of slow development，rapid development and attenuation as a whole. (4) The research result has important theoretical and practical significance to applied research of double - row anti - slide pile of large scale landslides control.
|
|
Received: 15 June 2015
|
|
|
|
| [1] |
罗一农,刘昌清,魏永幸.支挡结构极限状态的划分探讨 [J].铁道工程学报，2014(9) :26 -29.
|
|
Luo Yinong，Liu Changqing，Wei Yongxing. Discussion on Retaining Structure Limit State Classification [ J ]. Journal of Railway Engineering Society,2014(9) ：26 -29.
|
|
|
|
2015, Vol. 32 
