GPA.ROCK ANCHOR in geotechnical engineering.pptx

in gpa

1. PUDUCHERRY TECHNOLOGICAL UNIVERSITY CIVIL ENINEERING DEPARTMENT GEOTECHNICAL PROCESS AND ITS APPLICATION ASSIGNMENT PRESENTATION TOPIC : ROCK ANCHORS [From Unit 4] DONE BY : T.HEMALAXMI [2201206002 ]

2. INRODUCTION OBJECTIVES OF ROCK ANCHORS PRINCIPLE OF ROCK ANCHORING COMPONENTS OF ROCK ANCHOR TYPES OF ROCK ANCHOR INSTALLATION PROCESS APPLICATION OF ROCK ANCHORS ADVANTAGES AND LIMITATIONS CONCLUSION

3. INTRODUCTION ROCK ANCHORS Definition: Rock anchors is a steel tendon installed into a drilled hole in a rock formation or stable ground secured with grout to provide structural stability. Purpose: Provide stability against uplift sliding and overturning. Widely used in civil engineering field like Geotechnical and structural projects.

4. OBJECTIVES OF ROCK ANCHORS To stabilize slopes, tunnels and foundation. To resist uplift forces in dams and retaining walls. To increase the load-bearing capacity To prevent the structure movement.

5. PRINCIPLE OF ROCK ANCHORS The principle of a rock anchor is to create a strong, permanent connection between a surface structure and stable, underlying rock to resist force and stabilize the structure .

6. ANCHOR HEAD TENDON (steel rod/strand ) FREE LENGTH ZONE BOND LEGNGTH ZONE BEARING PLATE COMPONENT OF ROCK ANCHORS

7. TYPES OF ROCK ANCHOR TENSION ANCHOR COMPRESSION ANCHOR FRICTION ANCHOR GROUTED ANCHOR MECHANICAL ANCHOR

8. LOCKING OFF LOAD AT ANCHOR HEAD STRESSING ANCHOR TENDON WITH JACK GROUTING BOND LENGTH INSERTING TENDON/ANCHOR DRILLING BOREHOE IN ROCK INSTALLATION PROCESS OF ROCK ANCHOR LOCKING OFF LOAD AT ANCHOR HEAD STRESSING ANCHOR TENDON WITH JACK GROUTING BOND LENGTH INSERTING TENDON/ANCHOR DRILLING BOREHOLE IN ROCK

9. ADVANTAGES AND LIMITATIONS ADVANTAGES High load carrying capacity. Improves safety and stability. Can be installed in difficult terrains. Long service life if protected. LIMITATIONS Expensive installation Requires skilled labours Inspection and maintenance need. Effectiveness depends on rock quality.

10. RETAINING WALL SLOPE STABILIZATION IN HILLY AREAS APPLICATIONS

11. Conclusion Rock anchor are essential for stabilizing major structures. Provide safe, reliable, and long term support. This is great solution for geotechnical engineers.

12. THANK YOU…..