The Forest Jiaya ¢ó Landslide Program And Its Anti-slide Pile Structural Optimization Design,

Lin Jia Ya slide III locate on the high and steep slope ling in the foreside of hill where is in the north of Xi Ning city. In recent years, because of building road and water pipe, the slide is coming back to life partially. This is very dangerous. Especially, the activity of the slide makes the public dismay, and affects the society stability. To prevent and treat the slide is very important on the theories and practice.By the way of evaluating the stability and calculating the residual slip force of Lin Jia Ya slide III, this paper presents three comprehensive treatment projects on the ground of analyzing the cause and contrasts them through three several aspects of construction , treatment effect and engineering cost. The comprehensive treatment project of Lin Jia Ya slide El consists of whittling slope, anti-slide pile with anchoring cable, retaining wall, building ground drainages, level ing off and calking slope, vegetation protection etc. After managing, under the action of earthquake load and watery the stability coefficient of slide is up to 1. 10.Then, this text researches the structural optimization design of anti-slide pile with anchoring cable. On the condition that the width of section is invariable, the height of section is confirmed by structural optimization method. This will change traditional method to optimize the height of section so that design is simplified and cost is lower.This paper presents one optimization design method. The objective function is the cost of anti-slide pile' s per meter; The constraint conditions are the strength of anti-slide pile' s normal section and inclined section, the ratio of reinforcing design and the size of section in the design code; The design variables are the height of section, the area of reinforcement and the amount of hoop. And the optimization model is solved by 0. 618 method. In the course of optimization design of anti-slide pile' s structure, when the height of section changes, the internal force of anti-slide pile will change. To solve this problem, in this paper, the internal force in the constraint conditions are modified when the height of section changes.