CN-224227826-U - Multistage embedded pile and frame pile combined structure for reinforcing landslide

CN224227826UCN 224227826 UCN224227826 UCN 224227826UCN-224227826-U

Abstract

The utility model discloses a multistage embedded pile and frame pile combined structure for reinforcing landslide, which comprises at least four rows of anti-slide piles, wherein the at least four rows of anti-slide piles comprise single embedded piles, portal type embedded piles and frame type embedded piles which are sequentially arranged from high to low along a slope direction, the single embedded piles are arranged in at least two rows along the slope direction, the portal type embedded piles comprise first pile bodies, second pile bodies and first beam bodies, the first pile bodies and the second pile bodies are sequentially arranged from high to low along the slope direction, and the frame type embedded piles comprise third pile bodies, fourth pile bodies and second beam bodies, the third pile bodies, the fourth pile bodies and the second beam bodies are sequentially arranged from top to bottom along the slope direction at intervals. The combined system formed by the reinforcing structure and the slope body has the advantages of high integral rigidity, high deformation resistance and high anti-slip bearing capacity, and can meet the safety and stability requirements of guaranteeing the reinforced long sliding surface and high-thrust sliding surface and effectively limit the deformation of the slope body.

Inventors

XIAO SHIGUO
LIU TIANXIANG
TANG RAN
GUO CHENWEN
CHENG QIANG
Du Zhaomeng

Assignees

西南交通大学
四川省公路规划勘察设计研究院有限公司

Dates

Publication Date: 20260512
Application Date: 20250611

Claims (10)

1. The multi-stage embedded pile and frame pile combined structure for reinforcing landslide is characterized by comprising at least four rows of anti-slide piles, wherein the at least four rows of anti-slide piles comprise single embedded piles, portal embedded piles and frame embedded piles which are sequentially arranged along the slope direction from high to low, and the single embedded piles are arranged along the slope direction; The portal type embedded pile comprises a first pile body and a second pile body which are sequentially arranged from high to low along the slope direction, and a first beam body which is connected with the first pile body and the second pile body; The frame type embedded pile comprises a third pile body, a fourth pile body and a second beam body, wherein the third pile body and the fourth pile body are sequentially arranged from high to low along the slope direction, and the second beam body is connected with the third pile body and the fourth pile body and is arranged from top to bottom at intervals.
2. The landslide-reinforcing multi-stage embedded pile and frame pile combined structure of claim 1, wherein: The vertical distance between the pile top of the single embedded pile and the slope is 1/5-1/4 of the vertical thickness of the sliding body; The length of the embedded section of the single embedded pile is 0.4-0.6 times of the total length of the single embedded pile; The cross section of the single embedded pile is rectangular, and the long edge of the single embedded pile is arranged in a slope direction.
3. The landslide-reinforcing multi-stage embedded pile and frame pile combined structure of claim 1, wherein: the vertical distance between the pile top of the first pile body and the slope surface is 1/5-1/4 of the vertical thickness of the sliding body; The length of the embedded section of the first pile body is 0.3-0.5 times of the total length of the first pile body; The length of the embedded section of the second pile body is 0.4-0.6 times of the total length of the second pile body.
4. The landslide-reinforcing multi-stage embedded pile and frame pile combined structure of claim 1, wherein the cross sections of the first pile body and the second pile body are rectangular, long edges are arranged in a slope direction, the cross section of the first beam body is square, and the width of the rectangle is larger than the side length of the square.
5. The landslide-reinforcing multi-stage embedded pile and frame pile combined structure of claim 1, wherein: The tops of the third pile body and the fourth pile body are positioned on the slope; the length of the embedded section of the third pile body is 0.3-0.5 times of the total length of the third pile body; The length of the embedded section of the fourth pile body is 0.4-0.6 times of the total length of the fourth pile body.
6. The landslide-reinforcing multi-stage embedded pile and frame pile combined structure of claim 1, wherein the cross sections of the third pile body, the fourth pile body and the second beam body are square, and the side lengths of the third pile body and the fourth pile body are larger than the side length of the second beam body.
7. The landslide-reinforcing multi-stage embedded pile and frame pile combined structure according to claim 1, wherein the first beam body and the second beam body are both positioned above the sliding surface and horizontally arranged.
8. The landslide-reinforcing multilevel submerged pile and frame pile combination structure of claim 7, wherein: One end of the first beam body is connected with the top of the second pile body, and the other end of the first beam body is connected with the middle part of the loaded section of the first pile body; the second roof beam body is two, and wherein, the second roof beam body of upper portion is connected with the top of fourth pile body, and the second roof beam body of lower part is connected with the load section middle part of fourth pile body.
9. The landslide-reinforcing multi-stage embedded pile and frame pile combined structure of claim 7, wherein the horizontal length of the first beam body and the second beam body is 4-6 meters.
10. The landslide-reinforcing multi-stage embedded pile and frame pile combined structure according to claim 1, wherein pile edge distances of at least four rows of anti-slip piles arranged along the slope direction of the slope are 8-10 meters, and pile edge distances arranged along the direction of the slope are 3-5 meters.

Description

Multistage embedded pile and frame pile combined structure for reinforcing landslide Technical Field The utility model relates to the technical field of landslide reinforcement engineering, in particular to a multistage embedded pile and frame pile combined structure for reinforcing landslide. Background The long landslide is a potential geological disaster problem which is possibly involved in mountain engineering construction, and the landslide has longer sliding surface, thicker sliding body and large landslide thrust. The method for treating the large landslide generally adopts a method for treating the landslide from high to low in a grading manner along the sliding direction of the landslide body, such as a multi-stage slide-resistant pile structure, a multi-stage anchoring structure and the like. The anti-slide pile structure generally adopts a reinforced concrete structure, has the advantages of strong adaptability to geological environment, high durability and the like, and relatively speaking, the stability of the long-term performance of the anti-slide pile structure is weaker than that of the reinforced concrete anti-slide pile structure because of the problems of long-term relaxation, easy corrosion and the like of the anchor cable in the anchoring structure. Therefore, the adoption of the reinforced concrete slide-resistant pile structure for reinforcing the landslide is often an important measure for guaranteeing the long-term stability of the reinforced slope body. The traditional slide pile structure for reinforcing a long sliding surface and a high-thrust sliding surface is a multi-stage (or multi-row) single-row slide pile structure, namely, a plurality of stages of single-row slide piles are distributed at certain horizontal intervals from high to low along the sliding direction of a slope body, and each row of slide piles is of a traditional single-pile structure. On the one hand, the single pile has limited resistance, so that more stages (such as 6 stages or more) are needed, the engineering cost and the construction period are increased, and on the other hand, the single pile load-bearing section belongs to a cantilever beam structure and can generate larger deflection, and the deformation of the reinforced slope body is not fully restrained under the condition of larger thickness of the sliding body, and the larger deformation can be displayed under the action of heavy rainfall and strong shock. Therefore, for the engineering reinforcement of long sliding surfaces and large thrust landslide, especially for the important engineering with higher requirements on the stability and deformation of the slope body under the action of heavy rainfall and strong earthquake, the traditional multistage single-row slide-resistant pile structure is not necessarily applicable, and the comprehensive defects of technical and economical efficiency easily exist, so that a novel multistage slide-resistant pile reinforcement structure is required to be provided to solve the problem. Disclosure of utility model The utility model mainly aims to provide a multi-stage embedded pile and frame pile combined structure for reinforcing landslide, so as to solve the technical problem of comprehensive defects of technical and economical efficiency in the prior art. In order to achieve the above purpose, the utility model provides a multi-stage embedded pile and frame pile combined structure for reinforcing landslide, which has the following technical scheme: The multi-stage embedded pile and frame pile combined structure for reinforcing landslide comprises at least four rows of anti-slide piles, wherein the at least four rows of anti-slide piles comprise single embedded piles, portal embedded piles and frame embedded piles which are sequentially arranged from high to low along the slope direction, the single embedded piles are arranged in at least two rows along the slope direction, the portal embedded piles comprise first pile bodies, second pile bodies and first beam bodies, the first pile bodies and the second pile bodies are sequentially arranged from high to low along the slope direction, and the frame embedded piles comprise third pile bodies, fourth pile bodies and second beam bodies, the third pile bodies and the fourth pile bodies are sequentially arranged from high to low along the slope direction, and the second beam bodies are arranged from top to bottom at intervals. As the further improvement of the multi-stage embedded pile and frame pile combined structure for reinforcing landslide: The vertical distance between the pile top of the single embedded pile and the slope is 1/5-1/4 of the vertical thickness of the sliding body; The length of the embedded section of the single embedded pile is 0.4-0.6 times of the total length of the single embedded pile; The cross section of the single embedded pile is rectangular, and the long edge of the single embedded pile is arranged in a slope direction. As the fur